org.hsqldb.jdbc.JDBCResultSet Maven / Gradle / Ivy
/* Copyright (c) 2001-2011, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.jdbc;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.math.BigDecimal;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Map;
//#ifdef JAVA6
import java.sql.NClob;
import java.sql.RowId;
import java.sql.SQLXML;
//#endif JAVA6
import org.hsqldb.ColumnBase;
import org.hsqldb.persist.HsqlDatabaseProperties;
import org.hsqldb.HsqlDateTime;
import org.hsqldb.HsqlException;
import org.hsqldb.SessionInterface;
import org.hsqldb.error.Error;
import org.hsqldb.error.ErrorCode;
import org.hsqldb.lib.IntValueHashMap;
import org.hsqldb.lib.StringInputStream;
import org.hsqldb.navigator.RowSetNavigator;
import org.hsqldb.navigator.RowSetNavigatorClient;
import org.hsqldb.result.Result;
import org.hsqldb.result.ResultConstants;
import org.hsqldb.result.ResultMetaData;
import org.hsqldb.result.ResultProperties;
import org.hsqldb.types.BinaryData;
import org.hsqldb.types.BlobDataID;
import org.hsqldb.types.ClobDataID;
import org.hsqldb.types.DateTimeType;
import org.hsqldb.types.IntervalType;
import org.hsqldb.types.JavaObjectData;
import org.hsqldb.types.TimeData;
import org.hsqldb.types.TimestampData;
import org.hsqldb.types.Type;
import org.hsqldb.types.Types;
/* $Id: JDBCResultSet.java 5249 2013-06-06 09:23:46Z fredt $ */
//boucherb@users 20051207 - patch 1.9.0 - initial JDBC 4.0 support work
//fredt@users 20060431 - patch 1.9.0 rewrite with RowSetNavigator
//boucherb@users 20060522 - doc 1.9.0 - full synch up to Mustang Build 84
// Revision 1.21 2006/07/12 12:27:25 boucherb
// patch 1.9.0
// - full synch up to Mustang b90
/**
*
* A table of data representing a database result set, which
* is usually generated by executing a statement that queries the database.
*
* A ResultSet
object maintains a cursor pointing
* to its current row of data. Initially the cursor is positioned
* before the first row. The next
method moves the
* cursor to the next row, and because it returns false
* when there are no more rows in the ResultSet
object,
* it can be used in a while
loop to iterate through
* the result set.
*
* A default ResultSet
object is not updatable and
* has a cursor that moves forward only. Thus, you can
* iterate through it only once and only from the first row to the
* last row. It is possible to
* produce ResultSet
objects that are scrollable and/or
* updatable. The following code fragment, in which con
* is a valid Connection
object, illustrates how to make
* a result set that is scrollable and insensitive to updates by others, and
* that is updatable. See ResultSet
fields for other
* options.
*
*
* Statement stmt = con.createStatement(
* ResultSet.TYPE_SCROLL_INSENSITIVE,
* ResultSet.CONCUR_UPDATABLE);
* ResultSet rs = stmt.executeQuery("SELECT a, b FROM TABLE2");
* // rs will be scrollable, will not show changes made by others,
* // and will be updatable
*
*
* The ResultSet
interface provides
* getter methods (getBoolean
, getLong
, and so on)
* for retrieving column values from the current row.
* Values can be retrieved using either the index number of the
* column or the name of the column. In general, using the
* column index will be more efficient. Columns are numbered from 1.
* For maximum portability, result set columns within each row should be
* read in left-to-right order, and each column should be read only once.
*
* For the getter methods, a JDBC driver attempts
* to convert the underlying data to the Java type specified in the
* getter method and returns a suitable Java value. The JDBC specification
* has a table showing the allowable mappings from SQL types to Java types
* that can be used by the ResultSet
getter methods.
*
*
Column names used as input to getter methods are case
* insensitive. When a getter method is called with
* a column name and several columns have the same name,
* the value of the first matching column will be returned.
* The column name option is
* designed to be used when column names are used in the SQL
* query that generated the result set.
* For columns that are NOT explicitly named in the query, it
* is best to use column numbers. (JDBC4 clarification:) If column names are used, the
* programmer should take care to guarantee that they uniquely refer to
* the intended columns, which can be assured with the SQL AS clause.
*
* A set of updater methods were added to this interface
* in the JDBC 2.0 API (JavaTM 2 SDK,
* Standard Edition, version 1.2). The comments regarding parameters
* to the getter methods also apply to parameters to the
* updater methods.
*
* The updater methods may be used in two ways:
*
* - to update a column value in the current row. In a scrollable
*
ResultSet
object, the cursor can be moved backwards
* and forwards, to an absolute position, or to a position
* relative to the current row.
* The following code fragment updates the NAME
column
* in the fifth row of the ResultSet
object
* rs
and then uses the method updateRow
* to update the data source table from which rs
was derived.
*
*
* rs.absolute(5); // moves the cursor to the fifth row of rs
* rs.updateString("NAME", "AINSWORTH"); // updates the
* // NAME
column of row 5 to be AINSWORTH
* rs.updateRow(); // updates the row in the data source
*
*
*
* - to insert column values into the insert row. An updatable
*
ResultSet
object has a special row associated with
* it that serves as a staging area for building a row to be inserted.
* The following code fragment moves the cursor to the insert row, builds
* a three-column row, and inserts it into rs
and into
* the data source table using the method insertRow
.
*
*
* rs.moveToInsertRow(); // moves cursor to the insert row
* rs.updateString(1, "AINSWORTH"); // updates the
* // first column of the insert row to be AINSWORTH
* rs.updateInt(2,35); // updates the second column to be 35
* rs.updateBoolean(3, true); // updates the third column to true
* rs.insertRow();
* rs.moveToCurrentRow();
*
*
*
*
* A ResultSet
object is automatically closed when the
* Statement
object that
* generated it is closed, re-executed, or used
* to retrieve the next result from a sequence of multiple results.
*
*
The number, types and properties of a ResultSet
* object's columns are provided by the ResulSetMetaData
* object returned by the ResultSet.getMetaData
method.
*
*
*
*
* HSQLDB-Specific Information:
*
* A ResultSet
object generated by HSQLDB is by default of
* ResultSet.TYPE_FORWARD_ONLY
(as is standard JDBC behavior)
* and does not allow the use of absolute and relative positioning
* methods. If a statement is created with:
*
*
* Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
*
*
* then the ResultSet
objects it produces support
* using all of the absolute and relative positioning methods of JDBC2
* to set the position of the current row, for example:
*
*
* rs.absolute(5);
* String fifthRowValue = rs.getString(1);
* rs.relative(4);
* String ninthRowValue = rs.getString(1);
*
*
* Note: An HSQLDB ResultSet
object persists, even after its
* connection is closed. This is regardless of the operational mode of
* the {@link org.hsqldb.Database Database} from which it came. That is, they
* persist whether originating from a Server
,
* WebServer
or in-process mode Database.
*
*
* From HSQLDB 2.0, there is full support for updatable result sets.
* Supported methods
* include all updateXXX methods for the supported types, as well as the
* {@link #insertRow},
* {@link #updateRow}, {@link #deleteRow}, {@link #moveToInsertRow}
* methods.
*
* The Statement must be created with ResultSet.CONCUR_UPDATABLE instead of
* CONCUR_READ_ONLY.
*
* Updatability of a result set follows the SQL standards. Some or all columns
* of an updatable result set can be updated. The current row in such result sets
* can be deleted using the {@link #deleteRow} method. Some updatable result set
* can also be inserted into and support {@link #moveToInsertRow}.
*
* A result set is updatable if the SELECT statement
* is updatable. This includes SELECT from TABLE and updatable VIEW objects.
* An updatable SELECT statement has a single uderlying table or view.
* HSQLDB supports both scrollable and forward-only result sets for updatability.
*
*
* -- In the SELECT below, columns A and B are updatable, any row can be
* -- deleted, but it is not insertable-into as column C is not directly from
* -- the table.
* SELECT A, B, A + B AS C FROM T WHERE ...
*
* -- The SELECT below can be insertable-into so long as other columns of the
* -- table that do not appear in the SELECT list have a default value.
* SELECT A, B FROM T WHERE ...
*
*
* JRE 1.1.x Notes:
*
* In general, JDBC 2 support requires Java 1.2 and above, and JDBC 3 requires
* Java 1.4 and above. In HSQLDB, support for methods introduced in different
* versions of JDBC depends on the JDK version used for compiling and building
* HSQLDB.
*
* Since 1.7.0, it is possible to build the product so that
* all JDBC 2 methods can be called while executing under the version 1.1.x
* Java Runtime EnvironmentTM.
* However, some of these method calls require int
values that
* are defined only in the JDBC 2 or greater version of the
* {@link java.sql.ResultSet ResultSet} interface. For this reason, when the
* product is compiled under JDK 1.1.x, these values are defined here, in this
* class.
*
* In a JRE 1.1.x environment, calling JDBC 2 methods that take or return the
* JDBC2-only ResultSet
values can be achieved by referring
* to them in parameter specifications and return value comparisons,
* respectively, as follows:
*
*
* JDBCResultSet.FETCH_FORWARD
* JDBCResultSet.TYPE_FORWARD_ONLY
* JDBCResultSet.TYPE_SCROLL_INSENSITIVE
* JDBCResultSet.CONCUR_READ_ONLY
* // etc.
*
*
* However, please note that code written in such a manner will not be
* compatible for use with other JDBC 2 drivers, since they expect and use
* ResultSet
, rather than JDBCResultSet
. Also
* note, this feature is offered solely as a convenience to developers
* who must work under JDK 1.1.x due to operating constraints, yet wish to
* use some of the more advanced features available under the JDBC 2
* specification.
*
* (fredt@users)
* (boucherb@users)
*
*
* @see JDBCStatement#executeQuery
* @see JDBCStatement#getResultSet
* @see java.sql.ResultSetMetaData
*
* @author Campbell Boucher-Burnet (boucherb@users dot sourceforge.net)
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.3.0
* @since HSQLDB 1.9.0
* @revised JDK 7, HSQLDB 2.0.1
*/
public class JDBCResultSet implements ResultSet {
/**
*
* Moves the cursor froward one row from its current position.
* A ResultSet
cursor is initially positioned
* before the first row; the first call to the method
* next
makes the first row the current row; the
* second call makes the second row the current row, and so on.
* (JDBC4 clarification:)
* When a call to the next
method returns false
,
* the cursor is positioned after the last row. Any
* invocation of a ResultSet
method which requires a
* current row will result in a SQLException
being thrown.
* If the result set type is TYPE_FORWARD_ONLY
, it is vendor specified
* whether their JDBC driver implementation will return false
or
* throw an SQLException
on a
* subsequent call to next
.
*
*
If an input stream is open for the current row, a call
* to the method next
will
* implicitly close it. A ResultSet
object's
* warning chain is cleared when a new row is read.
*
*
* @return true
if the new current row is valid;
* false
if there are no more rows
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public boolean next() throws SQLException {
checkClosed();
rootWarning = null;
return navigator.next();
}
/**
*
* Releases this ResultSet
object's database and
* JDBC resources immediately instead of waiting for
* this to happen when it is automatically closed.
*
*
(JDBC4 clarification:)
* The closing of a ResultSet
object does not close the Blob
,
* Clob
or NClob
objects created by the ResultSet
. Blob
,
* Clob
or NClob
objects remain valid for at least the duration of the
* transaction in which they are created, unless their free
method is invoked.
*
* (JDBC4 clarification:)
* When a ResultSet
is closed, any ResultSetMetaData
* instances that were created by calling the getMetaData
* method remain accessible.
*
*
Note: A ResultSet
object
* is automatically closed by the
* Statement
object that generated it when
* that Statement
object is closed,
* re-executed, or is used to retrieve the next result from a
* sequence of multiple results.
* (JDBC4 deleted:) [A ResultSet
object is also automatically
* closed when it is garbage collected.]
*
* Calling the method close
on a ResultSet
* object that is already closed is a no-op.
*
*
*
*
* @exception SQLException if a database access error occurs
*/
public void close() throws SQLException {
if (navigator == null) {
return;
}
if (ResultProperties.isHeld(rsProperties)) {
session.closeNavigator(navigator.getId());
} else {
navigator.release();
}
navigator = null;
if (autoClose && statement != null) {
statement.close();
}
}
/**
*
* Reports whether
* the last column read had a value of SQL NULL
.
* Note that you must first call one of the getter methods
* on a column to try to read its value and then call
* the method wasNull
to see if the value read was
* SQL NULL
.
*
*
* @return true
if the last column value read was SQL
* NULL
and false
otherwise
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public boolean wasNull() throws SQLException {
checkClosed();
return wasNullValue;
}
//======================================================================
// Methods for accessing results by column index
//======================================================================
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a String
in the Java programming language.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public String getString(int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type sourceType = resultMetaData.columnTypes[columnIndex - 1];
if (sourceType.typeCode == Types.SQL_CLOB) {
ClobDataID x = (ClobDataID) getColumnInType(columnIndex,
sourceType);
if (x == null) {
return null;
}
long length = x.length(session);
if (length > Integer.MAX_VALUE) {
JDBCUtil.throwError(Error.error(ErrorCode.X_42561));
}
return x.getSubString(session, 0, (int) length);
}
return (String) getColumnInType(columnIndex, Type.SQL_VARCHAR);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a boolean
in the Java programming language.
*
*
*
(JDBC4 clarification:)
*
If the designated column has a datatype of CHAR or VARCHAR
* and contains a "0" or has a datatype of BIT, TINYINT, SMALLINT, INTEGER or BIGINT
* and contains a 0, a value of false
is returned. If the designated column has a datatype
* of CHAR or VARCHAR
* and contains a "1" or has a datatype of BIT, TINYINT, SMALLINT, INTEGER or BIGINT
* and contains a 1, a value of true
is returned.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is false
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public boolean getBoolean(int columnIndex) throws SQLException {
Object o = getColumnInType(columnIndex, Type.SQL_BOOLEAN);
return o == null ? false
: ((Boolean) o).booleanValue();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a byte
in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the numeric value to the return type. If the value is
* out of the range for the return type, an error is returned. For example,
* this can happen if getByte() or getShort() is used to retrieve a value
* of type INTEGER or BIGINT and the value is beyond the range covered by
* the return type.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public byte getByte(int columnIndex) throws SQLException {
Object o = getColumnInType(columnIndex, Type.TINYINT);
return o == null ? 0
: ((Number) o).byteValue();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a short
in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the numeric value to the return type. If the value is
* out of the range for the return type, an error is returned. For example,
* this can happen if getByte() or getShort() is used to retrieve a value
* of type INTEGER or BIGINT and the value is beyond the range covered by
* the return type.
*
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public short getShort(int columnIndex) throws SQLException {
Object o = getColumnInType(columnIndex, Type.SQL_SMALLINT);
return o == null ? 0
: ((Number) o).shortValue();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* an int
in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the numeric value to the return type. If the value is
* out of the range for the return type, an error is returned. For example,
* this can happen if getInt() or getLong() is used to retrieve a value
* of type DECIMAL or NUMERIC with a large precision and the value is beyond
* the range covered by the return type.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public int getInt(int columnIndex) throws SQLException {
Object o = getColumnInType(columnIndex, Type.SQL_INTEGER);
return o == null ? 0
: ((Number) o).intValue();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a long
in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the numeric value to the return type. If the value is
* out of the range for the return type, an error is returned. For example,
* this can happen if getInt() or getLong() is used to retrieve a value
* of type DECIMAL or NUMERIC with a large precision and the value is beyond
* the range covered by the return type.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public long getLong(int columnIndex) throws SQLException {
Object o = getColumnInType(columnIndex, Type.SQL_BIGINT);
return o == null ? 0
: ((Number) o).longValue();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a float
in the Java programming language.
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the numeric value to the return type. If the value is
* out of the range for the return type, an error is returned. For example,
* this can happen if getFloat() or getDouble() is used to retrieve a value
* of type DECIMAL or NUMERIC with a large precision and the value is beyond
* the range covered by the return type.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public float getFloat(int columnIndex) throws SQLException {
Object o = getColumnInType(columnIndex, Type.SQL_DOUBLE);
return o == null ? (float) 0.0
: ((Number) o).floatValue();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a double
in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the numeric value to the return type. If the value is
* out of the range for the return type, an error is returned. For example,
* this can happen if getFloat() or getDouble() is used to retrieve a value
* of type DECIMAL or NUMERIC with a large precision and the value is beyond
* the range covered by the return type.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public double getDouble(int columnIndex) throws SQLException {
Object o = getColumnInType(columnIndex, Type.SQL_DOUBLE);
return o == null ? 0.0
: ((Number) o).doubleValue();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.sql.BigDecimal
in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the result and sets the scale
* with BigDecimal.ROUND_HALF_DOWN.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param scale the number of digits to the right of the decimal point
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @deprecated
* by java.sun.com as of JDK 1.2
*/
//#ifdef DEPRECATEDJDBC
public BigDecimal getBigDecimal(int columnIndex,
int scale) throws SQLException {
if (scale < 0) {
throw JDBCUtil.outOfRangeArgument();
}
BigDecimal bd = getBigDecimal(columnIndex);
if (bd != null) {
bd = bd.setScale(scale, BigDecimal.ROUND_DOWN);
}
return bd;
}
//#endif
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a byte
array in the Java programming language.
* The bytes represent the raw values returned by the driver.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB returns correct values for columns of binary types
* BINARY
, BIT
, BLOB
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public byte[] getBytes(int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type sourceType = resultMetaData.columnTypes[columnIndex - 1];
if (sourceType.typeCode == Types.SQL_BLOB) {
BlobDataID x = (BlobDataID) getColumnInType(columnIndex,
sourceType);
if (x == null) {
return null;
}
long length = x.length(session);
if (length > Integer.MAX_VALUE) {
JDBCUtil.throwError(Error.error(ErrorCode.X_42561));
}
return x.getBytes(session, 0, (int) length);
}
Object x = getColumnInType(columnIndex, Type.SQL_VARBINARY);
if (x == null) {
return null;
}
return ((BinaryData) x).getBytes();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.sql.Date
object in the Java programming language.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Date getDate(int columnIndex) throws SQLException {
Object t = getColumnInType(columnIndex, Type.SQL_DATE);
if (t == null) {
return null;
}
return (Date) Type.SQL_DATE.convertSQLToJava(session, t);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.sql.Time
object in the Java programming language.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Time getTime(int columnIndex) throws SQLException {
Object t = getColumnInType(columnIndex, Type.SQL_TIME);
if (t == null) {
return null;
}
return (Time) Type.SQL_TIME.convertSQLToJava(session, t);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.sql.Timestamp
object in the Java programming language.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Timestamp getTimestamp(int columnIndex) throws SQLException {
Object t = getColumnInType(columnIndex, Type.SQL_TIMESTAMP);
if (t == null) {
return null;
}
return (Timestamp) Type.SQL_TIMESTAMP.convertSQLToJava(session, t);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a stream of ASCII characters. The value can then be read in chunks from the
* stream. This method is particularly
* suitable for retrieving large LONGVARCHAR values.
* The JDBC driver will
* do any necessary conversion from the database format into ASCII.
*
* Note: All the data in the returned stream must be
* read prior to getting the value of any other column. The next
* call to a getter method implicitly closes the stream. Also, a
* stream may return 0
when the method
* InputStream.available
* is called whether there is data available or not.
*
*
*
*
* HSQLDB-Specific Information:
*
* The limitation noted above does not apply to HSQLDB.
*
* When the column is of type CHAR and its variations, it requires no
* conversion since it is represented internally already as a
* Java String object. When the column is not of type CHAR and its
* variations, the returned stream is based on a conversion to the
* Java String
representation of the value. In either case,
* the obtained stream is always equivalent to a stream of the low order
* bytes from the value's String representation.
*
* HSQLDB SQL CHAR
and its variations are all Unicode strings
* internally, so the recommended alternatives to this method are
* {@link #getString(int) getString},
* {@link #getUnicodeStream(int) getUnicodeStream} (deprecated)
* and new to 1.7.0: {@link #getCharacterStream(int) getCharacterStream}
* (now prefered over the deprecated getUnicodeStream alternative).
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return a Java input stream that delivers the database column value
* as a stream of one-byte ASCII characters;
* if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public java.io.InputStream getAsciiStream(
int columnIndex) throws SQLException {
String s = getString(columnIndex);
if (s == null) {
return null;
}
try {
return new ByteArrayInputStream(s.getBytes("US-ASCII"));
} catch (IOException e) {
return null;
}
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* as a stream of two-byte Unicode characters. The first byte is
* the high byte; the second byte is the low byte.
*
* The value can then be read in chunks from the
* stream. This method is particularly
* suitable for retrieving large LONGVARCHAR
values. The
* JDBC driver will do any necessary conversion from the database
* format into Unicode.
*
* Note: All the data in the returned stream must be
* read prior to getting the value of any other column. The next
* call to a getter method implicitly closes the stream.
* Also, a stream may return 0
when the method
* InputStream.available
* is called, whether there is data available or not.
*
*
*
*
* HSQLDB-Specific Information:
*
* The limitation noted above does not apply to HSQLDB.
*
* When the column is of type CHAR and its variations, it requires no
* conversion since it is represented internally already as
* Java Strings. When the column is not of type CHAR and its variations,
* the returned stream is based on a conversion to the
* Java String
representation of the value. In either case,
* the obtained stream is always equivalent to a stream of
* bytes from the value's String representation, with high-byte first.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return a Java input stream that delivers the database column value
* as a stream of two-byte Unicode characters;
* if the value is SQL NULL
, the value returned is
* null
*
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @deprecated use getCharacterStream
in place of
* getUnicodeStream
*/
//#ifdef DEPRECATEDJDBC
public java.io.InputStream getUnicodeStream(
int columnIndex) throws SQLException {
String s = getString(columnIndex);
if (s == null) {
return null;
}
return new StringInputStream(s);
}
//#endif
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a stream of
* uninterpreted bytes. The value can then be read in chunks from the
* stream. This method is particularly
* suitable for retrieving large LONGVARBINARY
values.
*
* Note: All the data in the returned stream must be
* read prior to getting the value of any other column. The next
* call to a getter method implicitly closes the stream. Also, a
* stream may return 0
when the method
* InputStream.available
* is called whether there is data available or not.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return a Java input stream that delivers the database column value
* as a stream of uninterpreted bytes;
* if the value is SQL NULL
, the value returned is
* null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public java.io.InputStream getBinaryStream(
int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type sourceType = resultMetaData.columnTypes[columnIndex - 1];
Object o = getColumnInType(columnIndex, sourceType);
if (o == null) {
return null;
}
if (o instanceof BlobDataID) {
return ((BlobDataID) o).getBinaryStream(session);
} else if (o instanceof Blob) {
return ((Blob) o).getBinaryStream();
} else if (o instanceof BinaryData) {
byte[] b = getBytes(columnIndex);
return new ByteArrayInputStream(b);
}
throw JDBCUtil.sqlException(ErrorCode.X_42561);
}
//======================================================================
// Methods for accessing results by column label
//======================================================================
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a String
in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public String getString(String columnLabel) throws SQLException {
return getString(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a boolean
in the Java programming language.
*
*
(JDBC4 clarification:) If the designated column has a datatype of CHAR or VARCHAR
* and contains a "0" or has a datatype of BIT, TINYINT, SMALLINT, INTEGER or BIGINT
* and contains a 0, a value of false
is returned. If the designated column has a datatype
* of CHAR or VARCHAR
* and contains a "1" or has a datatype of BIT, TINYINT, SMALLINT, INTEGER or BIGINT
* and contains a 1, a value of true
is returned.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is false
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public boolean getBoolean(String columnLabel) throws SQLException {
return getBoolean(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a byte
in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public byte getByte(String columnLabel) throws SQLException {
return getByte(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a short
in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public short getShort(String columnLabel) throws SQLException {
return getShort(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* an int
in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public int getInt(String columnLabel) throws SQLException {
return getInt(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a long
in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public long getLong(String columnLabel) throws SQLException {
return getLong(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a float
in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public float getFloat(String columnLabel) throws SQLException {
return getFloat(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a double
in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is 0
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public double getDouble(String columnLabel) throws SQLException {
return getDouble(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.math.BigDecimal
in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB converts the result and sets the scale
* with BigDecimal.ROUND_HALF_DOWN.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param scale the number of digits to the right of the decimal point
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @deprecated
* by java.sun.com as of JDK 1.2
*/
//#ifdef DEPRECATEDJDBC
public BigDecimal getBigDecimal(String columnLabel,
int scale) throws SQLException {
return getBigDecimal(findColumn(columnLabel), scale);
}
//#endif
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a byte
array in the Java programming language.
* The bytes represent the raw values returned by the driver.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public byte[] getBytes(String columnLabel) throws SQLException {
return getBytes(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.sql.Date
object in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Date getDate(String columnLabel) throws SQLException {
return getDate(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.sql.Time
object in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value;
* if the value is SQL NULL
,
* the value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Time getTime(String columnLabel) throws SQLException {
return getTime(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as
* a java.sql.Timestamp
object in the Java programming language.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value; if the value is SQL NULL
, the
* value returned is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Timestamp getTimestamp(String columnLabel) throws SQLException {
return getTimestamp(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a stream of
* ASCII characters. The value can then be read in chunks from the
* stream. This method is particularly
* suitable for retrieving large LONGVARCHAR
values.
* The JDBC driver will
* do any necessary conversion from the database format into ASCII.
*
* Note: All the data in the returned stream must be
* read prior to getting the value of any other column. The next
* call to a getter method implicitly closes the stream. Also, a
* stream may return 0
when the method available
* is called whether there is data available or not.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a Java input stream that delivers the database column value
* as a stream of one-byte ASCII characters.
* If the value is SQL NULL
,
* the value returned is null
.
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @see #getAsciiStream(int)
*/
public java.io.InputStream getAsciiStream(
String columnLabel) throws SQLException {
return getAsciiStream(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a stream of two-byte
* Unicode characters. The first byte is the high byte; the second
* byte is the low byte.
*
* The value can then be read in chunks from the
* stream. This method is particularly
* suitable for retrieving large LONGVARCHAR
values.
* The JDBC technology-enabled driver will
* do any necessary conversion from the database format into Unicode.
*
*
Note: All the data in the returned stream must be
* read prior to getting the value of any other column. The next
* call to a getter method implicitly closes the stream.
* Also, a stream may return 0
when the method
* InputStream.available
is called, whether there
* is data available or not.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a Java input stream that delivers the database column value
* as a stream of two-byte Unicode characters.
* If the value is SQL NULL
, the value returned
* is null
.
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @deprecated use getCharacterStream
instead
* @see #getUnicodeStream(int)
*/
//#ifdef DEPRECATEDJDBC
public java.io.InputStream getUnicodeStream(
String columnLabel) throws SQLException {
return getUnicodeStream(findColumn(columnLabel));
}
//#endif
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a stream of uninterpreted
* byte
s.
* The value can then be read in chunks from the
* stream. This method is particularly
* suitable for retrieving large LONGVARBINARY
* values.
*
*
Note: All the data in the returned stream must be
* read prior to getting the value of any other column. The next
* call to a getter method implicitly closes the stream. Also, a
* stream may return 0
when the method available
* is called whether there is data available or not.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a Java input stream that delivers the database column value
* as a stream of uninterpreted bytes;
* if the value is SQL NULL
, the result is null
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public java.io.InputStream getBinaryStream(
String columnLabel) throws SQLException {
return getBinaryStream(findColumn(columnLabel));
}
//=====================================================================
// Advanced features:
//=====================================================================
/**
*
* Retrieves the first warning reported by calls on this
* ResultSet
object.
* Subsequent warnings on this ResultSet
object
* will be chained to the SQLWarning
object that
* this method returns.
*
*
The warning chain is automatically cleared each time a new
* row is read. This method may not be called on a ResultSet
* object that has been closed; doing so will cause an
* SQLException
to be thrown.
*
* Note: This warning chain only covers warnings caused
* by ResultSet
methods. Any warning caused by
* Statement
methods
* (such as reading OUT parameters) will be chained on the
* Statement
object.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB does not produce SQLWarning
* objects on any ResultSet object warning chain; this
* method always returns null
.
*
*
*
* @return the first SQLWarning
object reported or
* null
if there are none
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public SQLWarning getWarnings() throws SQLException {
checkClosed();
return rootWarning;
}
/**
*
* Clears all warnings reported on this ResultSet
object.
* After this method is called, the method getWarnings
* returns null
until a new warning is
* reported for this ResultSet
object.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB does not produce SQLWarning
* objects on any ResultSet object warning chain; calls to this method
* are ignored.
*
*
*
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public void clearWarnings() throws SQLException {
checkClosed();
rootWarning = null;
}
/**
*
* Retrieves the name of the SQL cursor used by this ResultSet
* object.
*
* In SQL, a result table is retrieved through a cursor that is
* named. The current row of a result set can be updated or deleted
* using a positioned update/delete statement that references the
* cursor name. To insure that the cursor has the proper isolation
* level to support update, the cursor's SELECT
statement
* should be of the form SELECT FOR UPDATE
. If
* FOR UPDATE
is omitted, the positioned updates may fail.
*
*
The JDBC API supports this SQL feature by providing the name of the
* SQL cursor used by a ResultSet
object.
* The current row of a ResultSet
object
* is also the current row of this SQL cursor.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature when the cursor has a name.
*
*
*
*
* @return the SQL name for this ResultSet
object's cursor
* @exception SQLException if a database access error occurs or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
*/
public String getCursorName() throws SQLException {
checkClosed();
if (result == null) {
return "";
}
return result.getMainString();
}
/**
*
* Retrieves the number, types and properties of
* this ResultSet
object's columns.
*
*
*
*
* HSQLDB-Specific Information:
*
* Example:
*
* The following code fragment creates a ResultSet
object rs,
* creates a ResultSetMetaData
object rsmd, and uses rsmd
* to find out how many columns rs has and whether the first column
* in rs can be used in a WHERE
clause.
*
*
* ResultSet rs = stmt.executeQuery("SELECT a, b, c FROM TABLE2");
* ResultSetMetaData rsmd = rs.getMetaData();
* int numberOfColumns = rsmd.getColumnCount();
* boolean b = rsmd.isSearchable(1);
*
*
*
*
* Changes:
*
* With version 2.0, the engine's SQL implementation has been
* completely rewritten. Changes to this class and the implementation of
* ResultSetMetaData reflect the engine's new capabilities and provide
* more accurate information.
*
* changes to consider:
*
*
* - isAutoIncrement(int) always returned
false
* - isNullable(int) returns the nullability of a real table or view
* column in the ResultSet and returns
*
columnNoNulls
for non-base-column ResultSet columns
* (columns of the ResultSet that are based on expressions or
* aggregates).
* - getColumnDisplaySize(int) returns correct results even for expression
* columns.
* - getPrecision(int) returns the correct precision even for expression
* columns.
* - getScale(int) returns the correct precision even for expression
* columns.
* - getCatalogName(int) returns the catalog name of the database.
*
*
*
*
*
*
* @return the description of this ResultSet
object's columns
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @see JDBCResultSetMetaData
*/
public ResultSetMetaData getMetaData() throws SQLException {
checkClosed();
if (resultSetMetaData == null) {
resultSetMetaData = new JDBCResultSetMetaData(resultMetaData,
isUpdatable, isInsertable, connection);
}
return resultSetMetaData;
}
/**
*
* Gets the value of the designated column in the current row
* of this ResultSet
object as
* an Object
in the Java programming language.
*
*
This method will return the value of the given column as a
* Java object. The type of the Java object will be the default
* Java object type corresponding to the column's SQL type,
* following the mapping for built-in types specified in the JDBC
* specification. If the value is an SQL NULL
,
* the driver returns a Java null
.
*
*
This method may also be used to read database-specific
* abstract data types.
*
* In the JDBC 2.0 API, the behavior of method
* getObject
is extended to materialize
* data of SQL user-defined types.
*
* If Connection.getTypeMap
does not throw a
* SQLFeatureNotSupportedException
,
* then when a column contains a structured or distinct value,
* the behavior of this method is as
* if it were a call to: getObject(columnIndex,
* this.getStatement().getConnection().getTypeMap())
.
*
* If Connection.getTypeMap
does throw a
* SQLFeatureNotSupportedException
,
* then structured values are not supported, and distinct values
* are mapped to the default Java class as determined by the
* underlying SQL type of the DISTINCT type.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return a java.lang.Object
holding the column value
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Object getObject(int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type sourceType = resultMetaData.columnTypes[columnIndex - 1];
switch (sourceType.typeCode) {
case Types.SQL_ARRAY :
return getArray(columnIndex);
case Types.SQL_DATE :
return getDate(columnIndex);
case Types.SQL_TIME :
case Types.SQL_TIME_WITH_TIME_ZONE :
return getTime(columnIndex);
case Types.SQL_TIMESTAMP :
case Types.SQL_TIMESTAMP_WITH_TIME_ZONE :
return getTimestamp(columnIndex);
case Types.SQL_BINARY :
case Types.SQL_VARBINARY :
return getBytes(columnIndex);
case Types.SQL_BIT : {
boolean b = getBoolean(columnIndex);
return wasNull() ? null
: b ? Boolean.TRUE
: Boolean.FALSE;
}
case Types.SQL_CLOB :
return getClob(columnIndex);
case Types.SQL_BLOB :
return getBlob(columnIndex);
case Types.OTHER :
case Types.JAVA_OBJECT : {
Object o = getColumnInType(columnIndex, sourceType);
if (o == null) {
return null;
}
try {
return ((JavaObjectData) o).getObject();
} catch (HsqlException e) {
throw JDBCUtil.sqlException(e);
}
}
default :
return getColumnInType(columnIndex, sourceType);
}
}
/**
*
*
Gets the value of the designated column in the current row
* of this ResultSet
object as
* an Object
in the Java programming language.
*
*
This method will return the value of the given column as a
* Java object. The type of the Java object will be the default
* Java object type corresponding to the column's SQL type,
* following the mapping for built-in types specified in the JDBC
* specification. If the value is an SQL NULL
,
* the driver returns a Java null
.
*
* This method may also be used to read database-specific
* abstract data types.
*
* In the JDBC 2.0 API, the behavior of the method
* getObject
is extended to materialize
* data of SQL user-defined types. When a column contains
* a structured or distinct value, the behavior of this method is as
* if it were a call to: getObject(columnIndex,
* this.getStatement().getConnection().getTypeMap())
.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a java.lang.Object
holding the column value
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
*/
public Object getObject(String columnLabel) throws SQLException {
return getObject(findColumn(columnLabel));
}
//----------------------------------------------------------------
/**
*
* Maps the given ResultSet
column label to its
* ResultSet
column index.
*
*
*
*
* HSQLDB-Specific Information:
*
* Starting with 1.9.x, HSQLDB does an exhaustive search, backed by
* a cache lookup (to improve performance for subsequent invocations with
* a given input).
*
* This is in response to an observation posted here:
*
* http://sourceforge.net/forum/forum.php?thread_id=1388727&forum_id=73674
*
* Upon careful investigation of the JDBC specification and the behaviour
* of existing JDBC drivers, there is actually nothing preventing the
* findColumn method from doing an exhaustive search, as long as it conforms
* to the following rules (which describe the new implementation):
*
*
* - the entire search is case insensitive
*
- each search iteration occurs from leftmost to rightmost column,
* returning the first match encountered
*
- the first pass matches only bare column labels
*
- the second pass matches only simple column names
*
- further passes conform to the identifier qualification
* and identifier quoting rules of the engine
*
*
* In this implementation, the SQL tokenizer is not employed, both because
* it does not yet correctly handle greater than two part qualification
* and also because is is not immediately considered important to do a
* truly exhaustive search, handling the full range of possibly mixed quoted
* and unquoted identifier components.
*
* Instead:
*
* - a third pass matches simple table-dot-column qualified names
*
- a fourth pass matches simple schema-dot-table-dot-column qualified column names
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column index of the given column name
* @exception SQLException if the ResultSet
object
* does not contain a column labeled columnLabel
, a database access error occurs
* or this method is called on a closed result set
*/
public int findColumn(final String columnLabel) throws SQLException {
checkClosed();
if (columnLabel == null) {
throw JDBCUtil.nullArgument();
}
int columnIndex;
// faster lookup for subsequent access
if (columnMap != null) {
columnIndex = columnMap.get(columnLabel, -1);
if (columnIndex != -1) {
return columnIndex;
}
}
final String[] colLabels = resultMetaData.columnLabels;
columnIndex = -1;
// column labels first, to preference column aliases
for (int i = 0; i < columnCount; i++) {
if (columnLabel.equalsIgnoreCase(colLabels[i])) {
columnIndex = i;
break;
}
}
final ColumnBase[] columns = resultMetaData.columns;
// then bare column names, to preference simple
// quoted column idents that *may* contain "."
if (columnIndex < 0) {
for (int i = 0; i < columnCount; i++) {
if (columnLabel.equalsIgnoreCase(columns[i].getNameString())) {
columnIndex = i;
break;
}
}
}
// then table-qualified column names (again, quoted
// table idents *may* contain "."
// As a last resort, "fully" qualified column names
// (we don't yet bother with catalog qualification)
if (columnIndex < 0) {
int position = columnLabel.indexOf('.');
if (position < 0) {
throw JDBCUtil.sqlException(ErrorCode.JDBC_COLUMN_NOT_FOUND,
columnLabel);
}
for (int i = 0; i < columnCount; i++) {
final String tabName = columns[i].getTableNameString();
if (tabName == null || tabName.length() == 0) {
continue;
}
final String colName = columns[i].getNameString();
if (columnLabel.equalsIgnoreCase(tabName + '.' + colName)) {
columnIndex = i;
break;
}
final String schemName = columns[i].getSchemaNameString();
if (schemName == null || schemName.length() == 0) {
continue;
}
String match = new StringBuffer(schemName).append('.').append(
tabName).append('.').append(colName).toString();
if (columnLabel.equalsIgnoreCase(match)) {
columnIndex = i;
break;
}
}
}
if (columnIndex < 0) {
throw JDBCUtil.sqlException(ErrorCode.JDBC_COLUMN_NOT_FOUND,
columnLabel);
}
columnIndex++;
if (columnMap == null) {
columnMap = new IntValueHashMap();
}
columnMap.put(columnLabel, columnIndex);
return columnIndex;
}
//--------------------------JDBC 2.0-----------------------------------
//---------------------------------------------------------------------
// Getters and Setters
//---------------------------------------------------------------------
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a
* java.io.Reader
object.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @return a java.io.Reader
object that contains the column
* value; if the value is SQL NULL
, the value returned is
* null
in the Java programming language.
* @param columnIndex the first column is 1, the second is 2, ...
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @since JDK 1.2
*/
public java.io.Reader getCharacterStream(
int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type sourceType = resultMetaData.columnTypes[columnIndex - 1];
Object o = getColumnInType(columnIndex, sourceType);
if (o == null) {
return null;
}
if (o instanceof ClobDataID) {
return ((ClobDataID) o).getCharacterStream(session);
} else if (o instanceof Clob) {
return ((Clob) o).getCharacterStream();
} else if (o instanceof String) {
return new StringReader((String) o);
}
throw JDBCUtil.sqlException(ErrorCode.X_42561);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a
* java.io.Reader
object.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a java.io.Reader
object that contains the column
* value; if the value is SQL NULL
, the value returned is
* null
in the Java programming language
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @since JDK 1.2
*/
public java.io.Reader getCharacterStream(
String columnLabel) throws SQLException {
return getCharacterStream(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a
* java.math.BigDecimal
with full precision.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return the column value (full precision);
* if the value is SQL NULL
, the value returned is
* null
in the Java programming language.
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public BigDecimal getBigDecimal(int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type targetType = resultMetaData.columnTypes[columnIndex - 1];
switch (targetType.typeCode) {
case Types.SQL_NUMERIC :
case Types.SQL_DECIMAL :
break;
case Types.TINYINT :
case Types.SQL_SMALLINT :
case Types.SQL_INTEGER :
case Types.SQL_BIGINT :
targetType = Type.SQL_DECIMAL;
break;
case Types.SQL_DOUBLE :
default :
targetType = Type.SQL_DECIMAL_DEFAULT;
break;
}
return (BigDecimal) getColumnInType(columnIndex, targetType);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a
* java.math.BigDecimal
with full precision.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return the column value (full precision);
* if the value is SQL NULL
, the value returned is
* null
in the Java programming language.
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public BigDecimal getBigDecimal(String columnLabel) throws SQLException {
return getBigDecimal(findColumn(columnLabel));
}
//---------------------------------------------------------------------
// Traversal/Positioning
//---------------------------------------------------------------------
/**
*
* Retrieves whether the cursor is before the first row in
* this ResultSet
object.
*
* (JDBC4 Clarification:)
* Note:Support for the isBeforeFirst
method
* is optional for ResultSet
s with a result
* set type of TYPE_FORWARD_ONLY
*
*
* @return true
if the cursor is before the first row;
* false
if the cursor is at any other position or the
* result set contains no rows
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean isBeforeFirst() throws SQLException {
checkClosed();
if (isOnInsertRow) {
return false;
}
return navigator.isBeforeFirst();
}
/**
*
* Retrieves whether the cursor is after the last row in
* this ResultSet
object.
*
* (JDBC4 Clarification:)
* Note:Support for the isAfterLast
method
* is optional for ResultSet
s with a result
* set type of TYPE_FORWARD_ONLY
*
*
* @return true
if the cursor is after the last row;
* false
if the cursor is at any other position or the
* result set contains no rows
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean isAfterLast() throws SQLException {
// At afterLast condition exists when resultset has been traversed and
// the current row is null. iCurrentRow should also be set to
// afterlast but no need to test
checkClosed();
if (isOnInsertRow) {
return false;
}
return navigator.isAfterLast();
}
/**
*
* Retrieves whether the cursor is on the first row of
* this ResultSet
object.
*
* (JDBC4 Clarification:)
* Note:Support for the isFirst
method
* is optional for ResultSet
s with a result
* set type of TYPE_FORWARD_ONLY
*
*
* @return true
if the cursor is on the first row;
* false
otherwise
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean isFirst() throws SQLException {
checkClosed();
if (isOnInsertRow) {
return false;
}
return navigator.isFirst();
}
/**
*
* Retrieves whether the cursor is on the last row of
* this ResultSet
object.
* Note: Calling the method isLast
may be expensive
* because the JDBC driver
* might need to fetch ahead one row in order to determine
* whether the current row is the last row in the result set.
*
* (JDBC4 Clarification:)
* Note: Support for the isLast
method
* is optional for ResultSet
s with a result
* set type of TYPE_FORWARD_ONLY
*
*
* @return true
if the cursor is on the last row;
* false
otherwise
* @exception SQLException if a database access error occurs or this method is
* called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean isLast() throws SQLException {
checkClosed();
if (isOnInsertRow) {
return false;
}
return navigator.isLast();
}
/**
*
* Moves the cursor to the front of
* this ResultSet
object, just before the
* first row. This method has no effect if the result set contains no rows.
*
*
* @exception SQLException if a database access error
* occurs, this method is called on a closed result set or the
* result set type is TYPE_FORWARD_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void beforeFirst() throws SQLException {
checkClosed();
checkNotForwardOnly();
if (isOnInsertRow || isRowUpdated) {
throw JDBCUtil.sqlExceptionSQL(ErrorCode.X_24513);
}
navigator.beforeFirst();
}
/**
*
* Moves the cursor to the end of
* this ResultSet
object, just after the
* last row. This method has no effect if the result set contains no rows.
*
*
* @exception SQLException if a database access error
* occurs, this method is called on a closed result set
* or the result set type is TYPE_FORWARD_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void afterLast() throws SQLException {
checkClosed();
checkNotForwardOnly();
if (isOnInsertRow || isRowUpdated) {
throw JDBCUtil.sqlExceptionSQL(ErrorCode.X_24513);
}
navigator.afterLast();
}
/**
*
* Moves the cursor to the first row in
* this ResultSet
object.
*
*
* @return true
if the cursor is on a valid row;
* false
if there are no rows in the result set
* @exception SQLException if a database access error
* occurs, this method is called on a closed result set
* or the result set type is TYPE_FORWARD_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean first() throws SQLException {
checkClosed();
checkNotForwardOnly();
if (isOnInsertRow || isRowUpdated) {
throw JDBCUtil.sqlExceptionSQL(ErrorCode.X_24513);
}
return navigator.first();
}
/**
*
* Moves the cursor to the last row in
* this ResultSet
object.
*
*
* @return true
if the cursor is on a valid row;
* false
if there are no rows in the result set
* @exception SQLException if a database access error
* occurs, this method is called on a closed result set
* or the result set type is TYPE_FORWARD_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean last() throws SQLException {
checkClosed();
checkNotForwardOnly();
if (isOnInsertRow || isRowUpdated) {
throw JDBCUtil.sqlExceptionSQL(ErrorCode.X_24513);
}
return navigator.last();
}
/**
*
* Retrieves the current row number. The first row is number 1, the
* second number 2, and so on.
*
* (JDBC4 Clarification:)
* Note:Support for the getRow
method
* is optional for ResultSet
s with a result
* set type of TYPE_FORWARD_ONLY
*
*
* @return the current row number; 0
if there is no current row
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public int getRow() throws SQLException {
checkClosed();
if (navigator.isAfterLast()) {
return 0;
}
return navigator.getRowNumber() + 1;
}
/**
*
* Moves the cursor to the given row number in
* this ResultSet
object.
*
*
If the row number is positive, the cursor moves to
* the given row number with respect to the
* beginning of the result set. The first row is row 1, the second
* is row 2, and so on.
*
*
If the given row number is negative, the cursor moves to
* an absolute row position with respect to
* the end of the result set. For example, calling the method
* absolute(-1)
positions the
* cursor on the last row; calling the method absolute(-2)
* moves the cursor to the next-to-last row, and so on.
*
*
An attempt to position the cursor beyond the first/last row in
* the result set leaves the cursor before the first row or after
* the last row.
*
*
Note: Calling absolute(1)
is the same
* as calling first()
. Calling absolute(-1)
* is the same as calling last()
.
*
*
* @param row the number of the row to which the cursor should move.
* A positive number indicates the row number counting from the
* beginning of the result set; a negative number indicates the
* row number counting from the end of the result set
* @return true
if the cursor is moved to a position in this
* ResultSet
object;
* false
if the cursor is before the first row or after the
* last row
* @exception SQLException if a database access error
* occurs, this method is called on a closed result set
* or the result set type is TYPE_FORWARD_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean absolute(int row) throws SQLException {
checkClosed();
checkNotForwardOnly();
if (isOnInsertRow || isRowUpdated) {
throw JDBCUtil.sqlExceptionSQL(ErrorCode.X_24513);
}
if (row > 0) {
row--;
} else if (row == 0) {
return navigator.beforeFirst();
}
return navigator.absolute(row);
}
/**
*
* Moves the cursor a relative number of rows, either positive or negative.
* Attempting to move beyond the first/last row in the
* result set positions the cursor before/after the
* the first/last row. Calling relative(0)
is valid, but does
* not change the cursor position.
*
*
Note: Calling the method relative(1)
* is identical to calling the method next()
and
* calling the method relative(-1)
is identical
* to calling the method previous()
.
*
*
* @param rows an int
specifying the number of rows to
* move from the current row; a positive number moves the cursor
* forward; a negative number moves the cursor backward
* @return true
if the cursor is on a row;
* false
otherwise
* @exception SQLException if a database access error occurs, this method
* is called on a closed result set,
* there is no current row, or the result set type is
* TYPE_FORWARD_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean relative(int rows) throws SQLException {
checkClosed();
checkNotForwardOnly();
if (isOnInsertRow || isRowUpdated) {
throw JDBCUtil.sqlExceptionSQL(ErrorCode.X_24513);
}
return navigator.relative(rows);
}
/**
*
* Moves the cursor to the previous row in this
* ResultSet
object.
*
* (JDBC4 clarification:)
* When a call to the previous
method returns false
,
* the cursor is positioned before the first row. Any invocation of a
* ResultSet
method which requires a current row will result in a
* SQLException
being thrown.
*
* (JDBC4 clarification:)
* If an input stream is open for the current row, a call to the method
* previous
will implicitly close it. A ResultSet
* object's warning change is cleared when a new row is read.
*
*
*
* @return (JDBC4 clarification:) true
if the cursor is now positioned on a valid row;
* false
if the cursor is positioned before the first row
* @exception SQLException if a database access error
* occurs; this method is called on a closed result set
* or the result set type is TYPE_FORWARD_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean previous() throws SQLException {
checkClosed();
checkNotForwardOnly();
if (isOnInsertRow || isRowUpdated) {
throw JDBCUtil.sqlExceptionSQL(ErrorCode.X_24513);
}
rootWarning = null;
return navigator.previous();
}
//---------------------------------------------------------------------
// Properties
//---------------------------------------------------------------------
/**
*
* Gives a hint as to the direction in which the rows in this
* ResultSet
object will be processed.
* The initial value is determined by the
* Statement
object
* that produced this ResultSet
object.
* The fetch direction may be changed at any time.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB does not need this hint. However, as mandated by the JDBC standard,
* an SQLException is thrown if the result set type is TYPE_FORWARD_ONLY
* and a fetch direction other than FETCH_FORWARD is requested.
*
*
*
* @param direction an int
specifying the suggested
* fetch direction; one of ResultSet.FETCH_FORWARD
,
* ResultSet.FETCH_REVERSE
, or
* ResultSet.FETCH_UNKNOWN
* @exception SQLException if a database access error occurs; this
* method is called on a closed result set or
* the result set type is TYPE_FORWARD_ONLY
and the fetch
* direction is not FETCH_FORWARD
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
* @see JDBCStatement#setFetchDirection
* @see #getFetchDirection
*/
public void setFetchDirection(int direction) throws SQLException {
checkClosed();
switch (direction) {
case FETCH_FORWARD : {
break;
}
case FETCH_REVERSE : {
checkNotForwardOnly();
break;
}
case FETCH_UNKNOWN : {
checkNotForwardOnly();
break;
}
default : {
throw JDBCUtil.notSupported();
}
}
}
/**
*
* Retrieves the fetch direction for this
* ResultSet
object.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB does not depend on fetch direction and always returns
* FETCH_FORWARD
, but the value has no real meaning.
*
*
*
* @return the current fetch direction for this ResultSet
object
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
* @see #setFetchDirection
*/
public int getFetchDirection() throws SQLException {
checkClosed();
return FETCH_FORWARD;
}
/**
*
* Gives the JDBC driver a hint as to the number of rows that should
* be fetched from the database when more rows are needed for this
* ResultSet
object.
* If the fetch size specified is zero, the JDBC driver
* ignores the value and is free to make its own best guess as to what
* the fetch size should be. The default value is set by the
* Statement
object
* that created the result set. The fetch size may be changed at any time.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB may not build and return a result set as a
* whole. Therefore the supplied, non-zero, fetch size value is used for
* some ResultSet objects.
*
*
*
* @param rows the number of rows to fetch
* @exception SQLException if a database access error occurs; this method
* (JDBC4 Clarification:)
* is called on a closed result set or the
* (JDBC4 clarification:)
* condition rows >= 0
is not satisfied
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
* @see #getFetchSize
* @see JDBCStatement#setFetchSize
* @see JDBCStatement#getFetchSize
*/
public void setFetchSize(int rows) throws SQLException {
if (rows < 0) {
throw JDBCUtil.outOfRangeArgument();
}
}
/**
*
* Retrieves the fetch size for this
* ResultSet
object.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB may not build and return a result set as a
* whole. The acutal fetch size for this result set is returned.
*
*
*
* @return the current fetch size for this ResultSet
object
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
* @see #setFetchSize
* @see JDBCStatement#getFetchSize
* @see JDBCStatement#setFetchSize
*/
public int getFetchSize() throws SQLException {
checkClosed();
return fetchSize;
}
/**
*
* Retrieves the type of this ResultSet
object.
* The type is determined by the Statement
object
* that created the result set.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB accurately
* reports the actual runtime scrollability of this result set instance.
*
*
*
* @return ResultSet.TYPE_FORWARD_ONLY
,
* ResultSet.TYPE_SCROLL_INSENSITIVE
,
* or ResultSet.TYPE_SCROLL_SENSITIVE
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public int getType() throws SQLException {
checkClosed();
return ResultProperties.getJDBCScrollability(rsProperties);
}
/**
*
* Retrieves the concurrency mode of this ResultSet
object.
* The concurrency used is determined by the
* Statement
object that created the result set.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports updatable result sets and accurately reports the actual
* runtime concurrency of this result set instance.
*
*
*
* @return the concurrency type, either
* ResultSet.CONCUR_READ_ONLY
* or ResultSet.CONCUR_UPDATABLE
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public int getConcurrency() throws SQLException {
checkClosed();
return ResultProperties.getJDBCConcurrency(rsProperties);
}
//---------------------------------------------------------------------
// Updates
//---------------------------------------------------------------------
/**
*
* Retrieves whether the current row has been updated. The value returned
* depends on whether or not the result set can detect updates.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports updatable result sets and accurately reports the actual
* value.
*
*
*
* @return true
if the current row is detected to
* have been visibly updated by the owner or another; false
otherwise
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @see JDBCDatabaseMetaData#updatesAreDetected
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean rowUpdated() throws SQLException {
checkClosed();
return isRowUpdated;
}
/**
*
* Retrieves whether the current row has had an insertion.
* The value returned depends on whether or not this
* ResultSet
object can detect visible inserts.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports updatable result sets and accurately reports the actual
* value.
*
*
*
* @return true
if the current row is detected to
* have been inserted; false
otherwise
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @see JDBCDatabaseMetaData#insertsAreDetected
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean rowInserted() throws SQLException {
checkClosed();
return false;
}
/**
*
* Retrieves whether a row has been deleted. A deleted row may leave
* a visible "hole" in a result set. This method can be used to
* detect holes in a result set. The value returned depends on whether
* or not this ResultSet
object can detect deletions.
*
* (JDBC4 Clarification:)
* Note: Support for the rowDeleted
method is optional with a result set
* concurrency of CONCUR_READ_ONLY
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports updatable result sets and accurately reports the actual
* value.
*
*
* @return true
if the current row is detected to
* have been deleted by the owner or another; false
otherwise
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @see JDBCDatabaseMetaData#deletesAreDetected
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public boolean rowDeleted() throws SQLException {
checkClosed();
return false;
}
/**
*
* (JDBC4 clarification:)
* Updates the designated column with a null
value.
*
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
* or insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateNull(int columnIndex) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, null);
}
/**
*
* Updates the designated column with a boolean
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBoolean(int columnIndex, boolean x) throws SQLException {
Boolean value = x ? Boolean.TRUE
: Boolean.FALSE;
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, value);
}
/**
*
* Updates the designated column with a byte
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateByte(int columnIndex, byte x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setIntParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a short
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateShort(int columnIndex, short x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setIntParameter(columnIndex, x);
}
/**
*
* Updates the designated column with an int
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateInt(int columnIndex, int x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setIntParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a long
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateLong(int columnIndex, long x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setLongParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a float
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateFloat(int columnIndex, float x) throws SQLException {
Double value = new Double(x);
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, value);
}
/**
*
* Updates the designated column with a double
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateDouble(int columnIndex, double x) throws SQLException {
Double value = new Double(x);
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, value);
}
/**
*
* Updates the designated column with a java.math.BigDecimal
* value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBigDecimal(int columnIndex,
BigDecimal x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a String
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateString(int columnIndex, String x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a byte
array value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBytes(int columnIndex, byte[] x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a java.sql.Date
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateDate(int columnIndex, Date x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a java.sql.Time
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateTime(int columnIndex, Time x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a java.sql.Timestamp
* value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateTimestamp(int columnIndex,
Timestamp x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, x);
}
/**
*
* (JDBC4 clarification:)
* Updates the designated column with an ascii stream value, which will have
* the specified number of bytes.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @param length the length of the stream
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateAsciiStream(int columnIndex, java.io.InputStream x,
int length) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setAsciiStream(columnIndex, x, length);
}
/**
*
* (JDBC4 clarification:)
* Updates the designated column with a binary stream value, which will have
* the specified number of bytes.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @param length the length of the stream
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBinaryStream(int columnIndex, java.io.InputStream x,
int length) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setBinaryStream(columnIndex, x, length);
}
/**
*
* (JDBC4 clarification:)
* Updates the designated column with a character stream value, which will have
* the specified number of (CHECKME: characters?) bytes.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @param length the length of the stream
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateCharacterStream(int columnIndex, java.io.Reader x,
int length) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setCharacterStream(columnIndex, x, length);
}
/**
*
* Updates the designated column with an Object
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
* (JDBC clarification:)
* If the second argument is an InputStream
then the stream must contain
* the number of bytes specified by scaleOrLength. If the second argument is a
* Reader
then the reader must contain the number of characters specified
* by scaleOrLength. If these conditions are not true the driver will generate a
* SQLException
when the statement is executed.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @param scaleOrLength for an object of java.math.BigDecimal
,
* this is the number of digits after the decimal point. For
* Java Object types InputStream
and Reader
,
* this is the length
* of the data in the stream or reader. For all other types,
* this value will be ignored.
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateObject(int columnIndex, Object x,
int scaleOrLength) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setObject(columnIndex, x, 0, scaleOrLength);
}
/**
*
* Updates the designated column with an Object
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateObject(int columnIndex, Object x) throws SQLException {
startUpdate(columnIndex);
preparedStatement.setParameter(columnIndex, x);
}
/**
*
* Updates the designated column with a null
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateNull(String columnLabel) throws SQLException {
updateNull(findColumn(columnLabel));
}
/**
*
* Updates the designated column with a boolean
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBoolean(String columnLabel,
boolean x) throws SQLException {
updateBoolean(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a byte
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateByte(String columnLabel, byte x) throws SQLException {
updateByte(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a short
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateShort(String columnLabel, short x) throws SQLException {
updateShort(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with an int
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateInt(String columnLabel, int x) throws SQLException {
updateInt(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a long
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateLong(String columnLabel, long x) throws SQLException {
updateLong(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a float
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateFloat(String columnLabel, float x) throws SQLException {
updateFloat(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a double
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateDouble(String columnLabel,
double x) throws SQLException {
updateDouble(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a java.sql.BigDecimal
* value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBigDecimal(String columnLabel,
BigDecimal x) throws SQLException {
updateBigDecimal(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a String
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateString(String columnLabel,
String x) throws SQLException {
updateString(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a byte array value.
*
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
* or insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBytes(String columnLabel, byte[] x) throws SQLException {
updateBytes(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a java.sql.Date
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateDate(String columnLabel, Date x) throws SQLException {
updateDate(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a java.sql.Time
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateTime(String columnLabel, Time x) throws SQLException {
updateTime(findColumn(columnLabel), x);
}
/**
*
* Updates the designated column with a java.sql.Timestamp
* value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateTimestamp(String columnLabel,
Timestamp x) throws SQLException {
updateTimestamp(findColumn(columnLabel), x);
}
/**
*
* (JDBC4 clarification:)
* Updates the designated column with an ascii stream value, which will have
* the specified number of bytes.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @param length the length of the stream
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateAsciiStream(String columnLabel, java.io.InputStream x,
int length) throws SQLException {
updateAsciiStream(findColumn(columnLabel), x, length);
}
/**
*
* (JDBC4 clarification:)
* Updates the designated column with a binary stream value, which will have
* the specified number of bytes.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @param length the length of the stream
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateBinaryStream(String columnLabel, java.io.InputStream x,
int length) throws SQLException {
updateBinaryStream(findColumn(columnLabel), x, length);
}
/**
*
* (JDBC4 clarification)
* Updates the designated column with a character stream value, which will have
* the specified number of (CHECKME: characters?) bytes.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param reader the java.io.Reader
object containing
* the new column value
* @param length the length of the stream
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateCharacterStream(String columnLabel,
java.io.Reader reader,
int length) throws SQLException {
updateCharacterStream(findColumn(columnLabel), reader, length);
}
/**
*
* Updates the designated column with an Object
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
* (JDBC4 Clarification:)
* If the second argument is an InputStream
then the stream must contain
* the number of bytes specified by scaleOrLength. If the second argument is a
* Reader
then the reader must contain the number of characters specified
* by scaleOrLength. If these conditions are not true the driver will generate a
* SQLException
when the statement is executed.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @param scaleOrLength for an object of java.math.BigDecimal
,
* this is the number of digits after the decimal point. For
* Java Object types InputStream
and Reader
,
* this is the length
* of the data in the stream or reader. For all other types,
* this value will be ignored.
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateObject(String columnLabel, Object x,
int scaleOrLength) throws SQLException {
updateObject(findColumn(columnLabel), x, scaleOrLength);
}
/**
*
* Updates the designated column with an Object
value.
* The updater methods are used to update column values in the
* current row or the insert row. The updater methods do not
* update the underlying database; instead the updateRow
or
* insertRow
methods are called to update the database.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param x the new column value
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateObject(String columnLabel,
Object x) throws SQLException {
updateObject(findColumn(columnLabel), x);
}
/**
*
* Inserts the contents of the insert row into this
* ResultSet
object and into the database.
* The cursor must be on the insert row when this method is called.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @exception SQLException if a database access error occurs,
* the result set concurrency is CONCUR_READ_ONLY
,
* this method is called on a closed result set,
* if this method is called when the cursor is not on the insert row,
* or if not all of non-nullable columns in
* the insert row have been given a non-null value
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void insertRow() throws SQLException {
performInsert();
}
/**
*
* Updates the underlying database with the new contents of the
* current row of this ResultSet
object.
* This method cannot be called when the cursor is on the insert row.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
* After updating any values in the current row, it is not possible to
* move the cursor position without calling this method, or alternatively
* calling cancelRowUpdates() to abandon the row update.
*
*
*
* @exception SQLException if a database access error occurs;
* the result set concurrency is CONCUR_READ_ONLY
;
* this method is called on a closed result set or
* if this method is called when the cursor is on the insert row
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void updateRow() throws SQLException {
performUpdate();
}
/**
*
* Deletes the current row from this ResultSet
object
* and from the underlying database. This method cannot be called when
* the cursor is on the insert row.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
* After a successful call to this method, the row is deleted.
*
*
*
* @exception SQLException if a database access error occurs;
* the result set concurrency is CONCUR_READ_ONLY
;
* this method is called on a closed result set
* or if this method is called when the cursor is on the insert row
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void deleteRow() throws SQLException {
performDelete();
}
/** @todo - fredt - implement */
/**
*
* Refreshes the current row with its most recent value in
* the database. This method cannot be called when
* the cursor is on the insert row.
*
* The refreshRow
method provides a way for an
* application to
* explicitly tell the JDBC driver to refetch a row(s) from the
* database. An application may want to call refreshRow
when
* caching or prefetching is being done by the JDBC driver to
* fetch the latest value of a row from the database. The JDBC driver
* may actually refresh multiple rows at once if the fetch size is
* greater than one.
*
*
All values are refetched subject to the transaction isolation
* level and cursor sensitivity. If refreshRow
is called after
* calling an updater method, but before calling
* the method updateRow
, then the
* updates made to the row are lost. Calling the method
* refreshRow
frequently will likely slow performance.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @exception SQLException if a database access error
* occurs; this method is called on a closed result set;
* the result set type is TYPE_FORWARD_ONLY
or if this
* method is called when the cursor is on the insert row
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method or this method is not supported for the specified result
* set type and result set concurrency.
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void refreshRow() throws SQLException {
clearUpdates();
}
/**
*
* Cancels the updates made to the current row in this
* ResultSet
object.
* This method may be called after calling an
* updater method(s) and before calling
* the method updateRow
to roll back
* the updates made to a row. If no updates have been made or
* updateRow
has already been called, this method has no
* effect.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @exception SQLException if a database access error
* occurs; this method is called on a closed result set;
* the result set concurrency is CONCUR_READ_ONLY
* or if this method is called when the cursor is
* on the insert row
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void cancelRowUpdates() throws SQLException {
clearUpdates();
}
/**
*
* Moves the cursor to the insert row. The current cursor position is
* remembered while the cursor is positioned on the insert row.
*
* The insert row is a special row associated with an updatable
* result set. It is essentially a buffer where a new row may
* be constructed by calling the updater methods prior to
* inserting the row into the result set.
*
* Only the updater, getter,
* and insertRow
methods may be
* called when the cursor is on the insert row. All of the columns in
* a result set must be given a value each time this method is
* called before calling insertRow
.
* An updater method must be called before a
* getter method can be called on a column value.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
*
* @exception SQLException if a database access error occurs; this
* method is called on a closed result set
* or the result set concurrency is CONCUR_READ_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void moveToInsertRow() throws SQLException {
startInsert();
}
/**
*
* Moves the cursor to the remembered cursor position, usually the
* current row. This method has no effect if the cursor is not on
* the insert row.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature.
*
*
* @exception SQLException if a database access error occurs, this
* method is called on a closed result set
* or the result set concurrency is CONCUR_READ_ONLY
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public void moveToCurrentRow() throws SQLException {
endInsert();
}
/**
*
* Retrieves the Statement
object that produced this
* ResultSet
object.
* If the result set was generated some other way, such as by a
* DatabaseMetaData
method, this method may return
* null
.
*
*
* @return the Statment
object that produced
* this ResultSet
object or null
* if the result set was produced some other way
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Statement getStatement() throws SQLException {
checkClosed();
return (Statement) statement;
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as an Object
* in the Java programming language.
* If the value is an SQL NULL
,
* the driver returns a Java null
.
* This method uses the given Map
object
* for the custom mapping of the
* SQL structured or distinct type that is being retrieved.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature, but ignores the map.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param map a java.util.Map
object that contains the mapping
* from SQL type names to classes in the Java programming language
* @return an Object
in the Java programming language
* representing the SQL value
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Object getObject(int columnIndex, Map map) throws SQLException {
return getObject(columnIndex);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a Ref
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB does not support this feature; this method always
* throws an SQLException
stating that the operation is not
* supported.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return a Ref
object representing an SQL REF
* value
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Ref getRef(int columnIndex) throws SQLException {
throw JDBCUtil.notSupported();
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a Blob
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB 2.0 supports this feature for objects of type BLOB and BINARY.
* The Blob returned for BINARY objects is a memory object. The Blob
* return for BLOB objects is not held entirely in memory. Its contents are
* fetched from the database when its getXXX() methods are called.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return a Blob
object representing the SQL
* BLOB
value in the specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2
*/
public Blob getBlob(int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type sourceType = resultMetaData.columnTypes[columnIndex - 1];
Object o = getColumnInType(columnIndex, sourceType);
if (o == null) {
return null;
}
if (o instanceof BlobDataID) {
JDBCBlobClient blob = new JDBCBlobClient(session, (BlobDataID) o);
if (isUpdatable) {
if (resultMetaData.colIndexes[columnIndex - 1] > 0
&& resultMetaData.columns[columnIndex - 1]
.isWriteable()) {
blob.setWritable(this, columnIndex - 1);
}
}
return blob;
} else if (o instanceof Blob) {
return (Blob) o;
} else if (o instanceof BinaryData) {
byte[] b = getBytes(columnIndex);
return new JDBCBlob(b);
}
throw JDBCUtil.sqlException(ErrorCode.X_42561);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a Clob
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB 2.0 supports this feature for objects of type CLOB and
* the variations of CHAR.
* The Clob returned for CHAR objects is a memory object. The Clob
* return for CLOB objects is not held entirely in memory. Its contents are
* fetched from the database when its getXXX() methods are called.
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return a Clob
object representing the SQL
* CLOB
value in the specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2
*/
public Clob getClob(int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type sourceType = resultMetaData.columnTypes[columnIndex - 1];
Object o = getColumnInType(columnIndex, sourceType);
if (o == null) {
return null;
}
if (o instanceof ClobDataID) {
JDBCClobClient clob = new JDBCClobClient(session, (ClobDataID) o);
if (isUpdatable) {
if (resultMetaData.colIndexes[columnIndex - 1] > 0
&& resultMetaData.columns[columnIndex - 1]
.isWriteable()) {
clob.setWritable(this, columnIndex - 1);
}
}
return clob;
} else if (o instanceof Clob) {
return (Clob) o;
} else if (o instanceof String) {
return new JDBCClob((String) o);
}
throw JDBCUtil.sqlException(ErrorCode.X_42561);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as an Array
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* From version 2.0, HSQLDB supports array types.
*
*
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @return an Array
object representing the SQL
* ARRAY
value in the specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Array getArray(int columnIndex) throws SQLException {
checkColumn(columnIndex);
Type type = resultMetaData.columnTypes[columnIndex - 1];
Object[] data = (Object[]) getCurrent()[columnIndex - 1];
if (!type.isArrayType()) {
throw JDBCUtil.sqlException(ErrorCode.X_42561);
}
if (trackNull(data)) {
return null;
}
return new JDBCArray(data, type.collectionBaseType(), type,
connection);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as an Object
* in the Java programming language.
* If the value is an SQL NULL
,
* the driver returns a Java null
.
* This method uses the specified Map
object for
* custom mapping if appropriate.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB supports this feature. But the Map parameter is ignored.
*
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @param map a java.util.Map
object that contains the mapping
* from SQL type names to classes in the Java programming language
* @return an Object
representing the SQL value in the
* specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Object getObject(String columnLabel, Map map) throws SQLException {
return getObject(findColumn(columnLabel), map);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a Ref
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* Including 2.0, HSQLDB does not support reference types; this method
* always throws an SQLException
stating that the operation
* is not supported.
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a Ref
object representing the SQL REF
* value in the specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Ref getRef(String columnLabel) throws SQLException {
return getRef(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a Blob
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB 2.0 supports this feature for objects of type BLOB and BINARY.
* The Blob returned for BINARY objects is a memory object. The Blob
* return for BLOB objects is not held entirely in memory. Its contents are
* fetched from the database when its getXXX() methods are called.
*
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a Blob
object representing the SQL BLOB
* value in the specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2
*/
public Blob getBlob(String columnLabel) throws SQLException {
return getBlob(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a Clob
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* HSQLDB 2.0 supports this feature for objects of type CLOB and
* the variations of CHAR.
* The Clob returned for CHAR objects is a memory object. The Clob
* return for CLOB objects is not held entirely in memory. Its contents are
* fetched from the database when its getXXX() methods are called.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return a Clob
object representing the SQL CLOB
* value in the specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2
*/
public Clob getClob(String columnLabel) throws SQLException {
return getClob(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as an Array
object
* in the Java programming language.
*
*
*
*
* HSQLDB-Specific Information:
*
* From version 2.0, HSQLDB supports array types.
*
*
*
* @param columnLabel the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column
* @return an Array
object representing the SQL ARRAY
value in
* the specified column
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @exception SQLFeatureNotSupportedException if the JDBC driver does not support
* this method
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Array getArray(String columnLabel) throws SQLException {
return getArray(findColumn(columnLabel));
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a java.sql.Date
object
* in the Java programming language.
* This method uses the given calendar to construct an appropriate millisecond
* value for the date if the underlying database does not store
* timezone information.
*
*
* @param columnIndex the first column is 1, the second is 2, ...
* @param cal the java.util.Calendar
object
* to use in constructing the date
* @return the column value as a java.sql.Date
object;
* if the value is SQL NULL
,
* the value returned is null
in the Java programming language
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Date getDate(int columnIndex, Calendar cal) throws SQLException {
TimestampData t = (TimestampData) getColumnInType(columnIndex,
Type.SQL_DATE);
if (t == null) {
return null;
}
long millis = t.getSeconds() * 1000;
if (cal != null) {
millis = HsqlDateTime.convertMillisToCalendar(cal, millis);
}
return new Date(millis);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a java.sql.Date
object
* in the Java programming language.
* This method uses the given calendar to construct an appropriate millisecond
* value for the date if the underlying database does not store
* timezone information.
*
*
* @param columnLabel the label for the column specified with the SQL AS
* clause. If the SQL AS clause was not specified, then the label is the
* name of the column
* @param cal the java.util.Calendar
object
* to use in constructing the date
* @return the column value as a java.sql.Date
object;
* if the value is SQL NULL
,
* the value returned is null
in the Java programming language
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Date getDate(String columnLabel, Calendar cal) throws SQLException {
return getDate(findColumn(columnLabel), cal);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a java.sql.Time
* object in the Java programming language.
* This method uses the given calendar to construct an appropriate millisecond
* value for the time if the underlying database does not store
* timezone information.
*
* HSQLDB-Specific Information:
*
* The JDBC specification for this method is vague. HSQLDB interprets the
* specification as follows:
*
*
* - If the SQL type of the column is WITH TIME ZONE, then the UTC value
* of the returned java.sql.Time object is the UTC of the SQL value without
* modification. In other words, the Calendar object is not used.
* - If the SQL type of the column is WITHOUT TIME ZONE, then the UTC
* value of the returned java.sql.Time is correct for the given Calendar
* object.
* - If the cal argument is null, it it ignored and the method returns
* the same Object as the method without the Calendar parameter.
*
*
java.util.Calendar
object
* to use in constructing the time
* @return the column value as a java.sql.Time
object;
* if the value is SQL NULL
,
* the value returned is null
in the Java programming language
* @exception SQLException if a database access error occurs
* or this method is called on a closed result set
* @since JDK 1.2 (JDK 1.1.x developers: read the overview for
* JDBCResultSet)
*/
public Time getTime(int columnIndex, Calendar cal) throws SQLException {
TimeData t = (TimeData) getColumnInType(columnIndex, Type.SQL_TIME);
if (t == null) {
return null;
}
long millis = DateTimeType.normaliseTime(t.getSeconds()) * 1000;
if (!resultMetaData.columnTypes[--columnIndex]
.isDateTimeTypeWithZone()) {
Calendar calendar = cal == null ? session.getCalendar()
: cal;
millis = HsqlDateTime.convertMillisToCalendar(calendar, millis);
millis = HsqlDateTime.getNormalisedTime(millis);
}
return new Time(millis);
}
/**
*
* Retrieves the value of the designated column in the current row
* of this ResultSet
object as a java.sql.Time
object
* in the Java programming language.
* This method uses the given calendar to construct an appropriate millisecond
* value for the time if the underlying database does not store
* timezone information.
*
* HSQLDB-Specific Information:
* * The JDBC specification for this method is vague. HSQLDB interprets the * specification as follows: * *
-
*
- If the SQL type of the column is WITH TIME ZONE, then the UTC value * of the returned java.sql.Time object is the UTC of the SQL value without * modification. In other words, the Calendar object is not used. *
- If the SQL type of the column is WITHOUT TIME ZONE, then the UTC * value of the returned java.sql.Time is correct for the given Calendar * object. *
- If the cal argument is null, it it ignored and the method returns * the same Object as the method without the Calendar parameter. *