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org.apache.openjpa.jdbc.sql.ResultSetResult Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.jdbc.sql;
import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Time;
import java.sql.Timestamp;
import java.sql.Types;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.Map;
import org.apache.openjpa.jdbc.identifier.DBIdentifier;
import org.apache.openjpa.jdbc.kernel.JDBCStore;
import org.apache.openjpa.jdbc.meta.JavaSQLTypes;
import org.apache.openjpa.jdbc.schema.Column;
import org.apache.openjpa.meta.JavaTypes;
/**
* Base {@link Result} implementation wrapped around a result set.
* Column objects, column names, or column indexes (as Number
* instances) can be used to retrieve result set data.
*
* @author Abe White
*/
public class ResultSetResult
extends AbstractResult {
private final Connection _conn;
private final Statement _stmnt;
private final ResultSet _rs;
private final DBDictionary _dict;
private boolean _closeConn = true;
private int _row = -1;
private int _size = -1;
// optional; used to deserialize blobs containing refs to persistent objs
private JDBCStore _store = null;
/**
* Constructor.
*/
public ResultSetResult(Connection conn, Statement stmnt,
ResultSet rs, DBDictionary dict) {
if (stmnt == null)
try {
stmnt = rs.getStatement();
} catch (Throwable t) {
}
_conn = conn;
_stmnt = stmnt;
_rs = rs;
_dict = dict;
}
/**
* Constructor.
*/
public ResultSetResult(Connection conn, Statement stmnt,
ResultSet rs, JDBCStore store) {
this(conn, stmnt, rs, store.getDBDictionary());
setStore(store);
}
/**
* Constructor.
*/
public ResultSetResult(Connection conn,
ResultSet rs, DBDictionary dict) {
_conn = conn;
_stmnt = null;
_rs = rs;
_dict = dict;
}
/**
* JDBC 2 constructor. Relies on being able to retrieve the statement
* from the result set, and the connection from the statement.
*/
public ResultSetResult(ResultSet rs, DBDictionary dict)
throws SQLException {
_stmnt = rs.getStatement();
_conn = _stmnt.getConnection();
_rs = rs;
_dict = dict;
}
/**
* JDBC 2 constructor. Relies on being able to retrieve the statement
* from the result set, and the connection from the statement.
*/
public ResultSetResult(ResultSet rs, JDBCStore store)
throws SQLException {
this(rs, store.getDBDictionary());
setStore(store);
}
/**
* Return the statement that produced this result.
*/
public Statement getStatement() {
return _stmnt;
}
/**
* Return the backing result set.
*/
public ResultSet getResultSet() {
return _rs;
}
/**
* Return the dictionary in use.
*/
public DBDictionary getDBDictionary() {
return _dict;
}
/**
* Optional store manager used to deserialize blobs containing
* references to persistent objects.
*/
public JDBCStore getStore() {
return _store;
}
/**
* Optional store manager used to deserialize blobs containing
* references to persistent objects.
*/
public void setStore(JDBCStore store) {
_store = store;
}
/**
* Whether to close the backing connection when this result is closed.
* Defaults to true.
*/
public boolean getCloseConnection() {
return _closeConn;
}
/**
* Whether to close the backing connection when this result is closed.
* Defaults to true.
*/
public void setCloseConnection(boolean closeConn) {
_closeConn = closeConn;
}
public void close() {
super.close();
try {
_rs.close();
} catch (SQLException se) {
}
if (_stmnt != null)
try {
_stmnt.close();
} catch (SQLException se) {
}
if (_closeConn)
try {
_conn.close();
} catch (SQLException se) {
}
}
public boolean supportsRandomAccess()
throws SQLException {
return _rs.getType() != ResultSet.TYPE_FORWARD_ONLY;
}
protected boolean absoluteInternal(int row)
throws SQLException {
if (row == ++_row)
return _rs.next();
// random access
_rs.absolute(row + 1);
if (_rs.getRow() == 0) {
_row = -1;
return false;
}
_row = row;
return true;
}
protected boolean nextInternal()
throws SQLException {
_row++;
return _rs.next();
}
public int size()
throws SQLException {
if (_size == -1) {
_rs.last();
_size = _rs.getRow();
if (_row == -1)
_rs.beforeFirst();
else
_rs.absolute(_row + 1);
}
return _size;
}
protected boolean containsInternal(Object obj, Joins joins)
throws SQLException {
return ((Number) translate(obj, joins)).intValue() > 0;
}
protected Array getArrayInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getArray(_rs, ((Number) obj).intValue());
}
protected InputStream getAsciiStreamInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getAsciiStream(_rs, ((Number) obj).intValue());
}
protected BigDecimal getBigDecimalInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getBigDecimal(_rs, ((Number) obj).intValue());
}
protected Number getNumberInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getNumber(_rs, ((Number) obj).intValue());
}
protected BigInteger getBigIntegerInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getBigInteger(_rs, ((Number) obj).intValue());
}
protected InputStream getBinaryStreamInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getBinaryStream(_rs, ((Number) obj).intValue());
}
protected Blob getBlobInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getBlob(_rs, ((Number) obj).intValue());
}
protected boolean getBooleanInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getBoolean(_rs, ((Number) obj).intValue());
}
protected byte getByteInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getByte(_rs, ((Number) obj).intValue());
}
protected byte[] getBytesInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getBytes(_rs, ((Number) obj).intValue());
}
protected Calendar getCalendarInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getCalendar(_rs, ((Number) obj).intValue());
}
protected char getCharInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getChar(_rs, ((Number) obj).intValue());
}
protected Reader getCharacterStreamInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getCharacterStream(_rs, ((Number) obj).intValue());
}
protected Clob getClobInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getClob(_rs, ((Number) obj).intValue());
}
protected Date getDateInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getDate(_rs, ((Number) obj).intValue());
}
protected java.sql.Date getDateInternal(Object obj, Calendar cal,
Joins joins)
throws SQLException {
return _dict.getDate(_rs, ((Number) obj).intValue(), cal);
}
protected double getDoubleInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getDouble(_rs, ((Number) obj).intValue());
}
protected float getFloatInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getFloat(_rs, ((Number) obj).intValue());
}
protected int getIntInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getInt(_rs, ((Number) obj).intValue());
}
protected Locale getLocaleInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getLocale(_rs, ((Number) obj).intValue());
}
protected long getLongInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getLong(_rs, ((Number) obj).intValue());
}
protected Object getStreamInternal(JDBCStore store, Object obj,
int metaTypeCode, Object arg, Joins joins) throws SQLException {
return getLOBStreamInternal(store, obj, joins);
}
protected Object getObjectInternal(Object obj, int metaTypeCode,
Object arg, Joins joins)
throws SQLException {
if (metaTypeCode == -1 && obj instanceof Column)
metaTypeCode = ((Column) obj).getJavaType();
boolean isClob = (obj instanceof Column) ? ((Column) obj).getType() == Types.CLOB && !((Column) obj).isXML()
: false;
obj = translate(obj, joins);
Object val = null;
switch (metaTypeCode) {
case JavaTypes.BOOLEAN:
case JavaTypes.BOOLEAN_OBJ:
val = (getBooleanInternal(obj, joins)) ? Boolean.TRUE
: Boolean.FALSE;
break;
case JavaTypes.BYTE:
case JavaTypes.BYTE_OBJ:
val = new Byte(getByteInternal(obj, joins));
break;
case JavaTypes.CHAR:
case JavaTypes.CHAR_OBJ:
val = new Character(getCharInternal(obj, joins));
break;
case JavaTypes.DOUBLE:
case JavaTypes.DOUBLE_OBJ:
val = new Double(getDoubleInternal(obj, joins));
break;
case JavaTypes.FLOAT:
case JavaTypes.FLOAT_OBJ:
val = new Float(getFloatInternal(obj, joins));
break;
case JavaTypes.INT:
case JavaTypes.INT_OBJ:
val = getIntInternal(obj, joins);
break;
case JavaTypes.LONG:
case JavaTypes.LONG_OBJ:
val = getLongInternal(obj, joins);
break;
case JavaTypes.SHORT:
case JavaTypes.SHORT_OBJ:
val = new Short(getShortInternal(obj, joins));
break;
case JavaTypes.STRING:
return getStringInternal(obj, joins, isClob);
case JavaTypes.OBJECT:
return _dict
.getBlobObject(_rs, ((Number) obj).intValue(), _store);
case JavaTypes.DATE:
return getDateInternal(obj, joins);
case JavaTypes.CALENDAR:
return getCalendarInternal(obj, joins);
case JavaTypes.BIGDECIMAL:
return getBigDecimalInternal(obj, joins);
case JavaTypes.NUMBER:
return getNumberInternal(obj, joins);
case JavaTypes.BIGINTEGER:
return getBigIntegerInternal(obj, joins);
case JavaTypes.LOCALE:
return getLocaleInternal(obj, joins);
case JavaSQLTypes.SQL_ARRAY:
return getArrayInternal(obj, joins);
case JavaSQLTypes.ASCII_STREAM:
return getAsciiStreamInternal(obj, joins);
case JavaSQLTypes.BINARY_STREAM:
return getBinaryStreamInternal(obj, joins);
case JavaSQLTypes.BLOB:
return getBlobInternal(obj, joins);
case JavaSQLTypes.BYTES:
return getBytesInternal(obj, joins);
case JavaSQLTypes.CHAR_STREAM:
return getCharacterStreamInternal(obj, joins);
case JavaSQLTypes.CLOB:
return getClobInternal(obj, joins);
case JavaSQLTypes.SQL_DATE:
return getDateInternal(obj, (Calendar) arg, joins);
case JavaSQLTypes.SQL_OBJECT:
return getSQLObjectInternal(obj, (Map) arg, joins);
case JavaSQLTypes.REF:
return getRefInternal(obj, (Map) arg, joins);
case JavaSQLTypes.TIME:
return getTimeInternal(obj, (Calendar) arg, joins);
case JavaSQLTypes.TIMESTAMP:
return getTimestampInternal(obj, (Calendar) arg, joins);
default:
if (obj instanceof Column) {
Column col = (Column) obj;
if (col.getType() == Types.BLOB
|| col.getType() == Types.VARBINARY) {
return _dict
.getBlobObject(_rs, col.getIndex(), _store);
}
}
return _dict.getObject(_rs, ((Number) obj).intValue(), null);
}
return (_rs.wasNull()) ? null : val;
}
protected Object getSQLObjectInternal(Object obj, Map map, Joins joins)
throws SQLException {
return _dict.getObject(_rs, ((Number) obj).intValue(), map);
}
protected Ref getRefInternal(Object obj, Map map, Joins joins)
throws SQLException {
return _dict.getRef(_rs, ((Number) obj).intValue(), map);
}
protected short getShortInternal(Object obj, Joins joins)
throws SQLException {
return _dict.getShort(_rs, ((Number) obj).intValue());
}
protected String getStringInternal(Object obj, Joins joins, boolean isClobString)
throws SQLException {
if (isClobString) {
return _dict.getClobString(_rs, ((Number) obj).intValue());
}
return _dict.getString(_rs, ((Number) obj).intValue());
}
protected Time getTimeInternal(Object obj, Calendar cal, Joins joins)
throws SQLException {
return _dict.getTime(_rs, ((Number) obj).intValue(), cal);
}
protected Timestamp getTimestampInternal(Object obj, Calendar cal,
Joins joins)
throws SQLException {
return _dict.getTimestamp(_rs, ((Number) obj).intValue(), cal);
}
public boolean wasNull()
throws SQLException {
return _rs.wasNull();
}
protected Object translate(Object obj, Joins joins)
throws SQLException {
if (obj instanceof Number)
return obj;
return findObject(obj, joins);
}
/**
* Return the 1-based result set index for the given column or id, or a
* non-positive number if the column is not contained in this result.
*/
protected int findObject(Object obj, Joins joins)
throws SQLException {
try {
String s1 = obj.toString();
DBIdentifier sName = DBIdentifier.newColumn(obj.toString());
return getResultSet().findColumn(_dict.convertSchemaCase(sName));
} catch (SQLException se) {
return 0;
}
}
protected InputStream getLOBStreamInternal(JDBCStore store, Object obj,
Joins joins) throws SQLException {
return _dict.getLOBStream(store, _rs, ((Number) obj).intValue());
}
}
