com.couchbase.CBDatabaseMetaData Maven / Gradle / Ivy
/*
* // Copyright (c) 2015 Couchbase, Inc.
* // Licensed 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 com.couchbase;
import com.couchbase.jdbc.core.CouchMetrics;
import com.couchbase.jdbc.core.CouchResponse;
import java.sql.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Created by davec on 2015-02-20.
*/
public class CBDatabaseMetaData implements DatabaseMetaData
{
final CBConnection connection;
public CBDatabaseMetaData(CBConnection connection)
{
this.connection=connection;
}
/**
* Retrieves whether the current user can call all the procedures
* returned by the method getProcedures.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean allProceduresAreCallable() throws SQLException
{
return true;
}
/**
* Retrieves whether the current user can use all the tables returned
* by the method getTables in a SELECT
* statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean allTablesAreSelectable() throws SQLException
{
return true;
}
/**
* Retrieves the URL for this DBMS.
*
* @return the URL for this DBMS or null if it cannot be
* generated
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getURL() throws SQLException
{
return connection.getURL();
}
/**
* Retrieves the user name as known to this database.
*
* @return the database user name
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getUserName() throws SQLException
{
return connection.getUserName();
}
/**
* Retrieves whether this database is in read-only mode.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean isReadOnly() throws SQLException
{
return connection.isReadOnly();
}
/**
* Retrieves whether NULL values are sorted high.
* Sorted high means that NULL values
* sort higher than any other value in a domain. In an ascending order,
* if this method returns true, NULL values
* will appear at the end. By contrast, the method
* nullsAreSortedAtEnd indicates whether NULL values
* are sorted at the end regardless of sort order.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean nullsAreSortedHigh() throws SQLException
{
return false;
}
/**
* Retrieves whether NULL values are sorted low.
* Sorted low means that NULL values
* sort lower than any other value in a domain. In an ascending order,
* if this method returns true, NULL values
* will appear at the beginning. By contrast, the method
* nullsAreSortedAtStart indicates whether NULL values
* are sorted at the beginning regardless of sort order.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean nullsAreSortedLow() throws SQLException
{
return true;
}
/**
* Retrieves whether NULL values are sorted at the start regardless
* of sort order.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean nullsAreSortedAtStart() throws SQLException
{
return false;
}
/**
* Retrieves whether NULL values are sorted at the end regardless of
* sort order.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean nullsAreSortedAtEnd() throws SQLException
{
return false;
}
/**
* Retrieves the name of this database product.
*
* @return database product name
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getDatabaseProductName() throws SQLException
{
return "Couchbase";
}
/**
* Retrieves the version number of this database product.
*
* @return database version number
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getDatabaseProductVersion() throws SQLException
{
ResultSet rs = connection.createStatement().executeQuery("select version()");
if(rs.next())
{
return rs.getString(1);
}
return null;
}
/**
* Retrieves the name of this JDBC driver.
*
* @return JDBC driver name
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getDriverName() throws SQLException
{
return CBDriver.DRIVER_NAME;
}
/**
* Retrieves the version number of this JDBC driver as a String.
*
* @return JDBC driver version
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getDriverVersion() throws SQLException
{
return ""+CBDriver.MAJOR_VERSION+'.'+CBDriver.MINOR_VERSION;
}
/**
* Retrieves this JDBC driver's major version number.
*
* @return JDBC driver major version
*/
@Override
public int getDriverMajorVersion()
{
return CBDriver.MAJOR_VERSION;
}
/**
* Retrieves this JDBC driver's minor version number.
*
* @return JDBC driver minor version number
*/
@Override
public int getDriverMinorVersion()
{
return CBDriver.MINOR_VERSION;
}
/**
* Retrieves whether this database stores tables in a local file.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean usesLocalFiles() throws SQLException
{
return false;
}
/**
* Retrieves whether this database uses a file for each table.
*
* @return true if this database uses a local file for each table;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean usesLocalFilePerTable() throws SQLException
{
return false;
}
/**
* Retrieves whether this database treats mixed case unquoted SQL identifiers as
* case sensitive and as a result stores them in mixed case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsMixedCaseIdentifiers() throws SQLException
{
return true;
}
/**
* Retrieves whether this database treats mixed case unquoted SQL identifiers as
* case insensitive and stores them in upper case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean storesUpperCaseIdentifiers() throws SQLException
{
return false;
}
/**
* Retrieves whether this database treats mixed case unquoted SQL identifiers as
* case insensitive and stores them in lower case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean storesLowerCaseIdentifiers() throws SQLException
{
return false;
}
/**
* Retrieves whether this database treats mixed case unquoted SQL identifiers as
* case insensitive and stores them in mixed case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean storesMixedCaseIdentifiers() throws SQLException
{
return false;
}
/**
* Retrieves whether this database treats mixed case quoted SQL identifiers as
* case sensitive and as a result stores them in mixed case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException
{
return true;
}
/**
* Retrieves whether this database treats mixed case quoted SQL identifiers as
* case insensitive and stores them in upper case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean storesUpperCaseQuotedIdentifiers() throws SQLException
{
return false;
}
/**
* Retrieves whether this database treats mixed case quoted SQL identifiers as
* case insensitive and stores them in lower case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean storesLowerCaseQuotedIdentifiers() throws SQLException
{
return false;
}
/**
* Retrieves whether this database treats mixed case quoted SQL identifiers as
* case insensitive and stores them in mixed case.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean storesMixedCaseQuotedIdentifiers() throws SQLException
{
return false;
}
/**
* Retrieves the string used to quote SQL identifiers.
* This method returns a space " " if identifier quoting is not supported.
*
* @return the quoting string or a space if quoting is not supported
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getIdentifierQuoteString() throws SQLException
{
return "`";
}
/**
* Retrieves a comma-separated list of all of this database's SQL keywords
* that are NOT also SQL:2003 keywords.
*
* @return the list of this database's keywords that are not also
* SQL:2003 keywords
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getSQLKeywords() throws SQLException
{
return null;
}
/**
* Retrieves a comma-separated list of math functions available with
* this database. These are the Open /Open CLI math function names used in
* the JDBC function escape clause.
*
* @return the list of math functions supported by this database
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getNumericFunctions() throws SQLException
{
return "add,div,mod,mult,neg,sub,abs,acos,asin,atan,atan2,ceil,cos,deg,degrees,e,exp,ln,log,floor,inf,nan,neginf,pi,posinf,power,rad,radians,random,round,sign,sin,sqrt,tan,trunc";
}
/**
* Retrieves a comma-separated list of string functions available with
* this database. These are the Open Group CLI string function names used
* in the JDBC function escape clause.
*
* @return the list of string functions supported by this database
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getStringFunctions() throws SQLException
{
return "contains,initcap,length,lower,ltrim,position,pos,regex_contains,regex_like,regex_position,regex_pos,regex_replace,repeat,replace,rtrim,split,substr,title,trim,upper";
}
/**
* Retrieves a comma-separated list of system functions available with
* this database. These are the Open Group CLI system function names used
* in the JDBC function escape clause.
*
* @return a list of system functions supported by this database
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getSystemFunctions() throws SQLException
{
return "";
}
/**
* Retrieves a comma-separated list of the time and date functions available
* with this database.
*
* @return the list of time and date functions supported by this database
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getTimeDateFunctions() throws SQLException
{
return "clock_millis,clock_str,date_add_millis,date_add_str,date_diff_millis,date_diff_str,date_part_millis,date_part_str,date_trunc_millis,date_trunc_str,millis,millis_to_str,millis_to_utc,millis_to_zone_name,now_millis,now_str,str_to_millis,str_to_utc,str_to_zone_name";
}
/**
* Retrieves the string that can be used to escape wildcard characters.
* This is the string that can be used to escape '_' or '%' in
* the catalog search parameters that are a pattern (and therefore use one
* of the wildcard characters).
*
* The '_' character represents any single character;
* the '%' character represents any sequence of zero or
* more characters.
*
* @return the string used to escape wildcard characters
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getSearchStringEscape() throws SQLException
{
return "\\";
}
/**
* Retrieves all the "extra" characters that can be used in unquoted
* identifier names (those beyond a-z, A-Z, 0-9 and _).
*
* @return the string containing the extra characters
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getExtraNameCharacters() throws SQLException
{
return "";
}
/**
* Retrieves whether this database supports ALTER TABLE
* with add column.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsAlterTableWithAddColumn() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports ALTER TABLE
* with drop column.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsAlterTableWithDropColumn() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports column aliasing.
*
*
If so, the SQL AS clause can be used to provide names for
* computed columns or to provide alias names for columns as
* required.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsColumnAliasing() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports concatenations between
* NULL and non-NULL values being
* NULL.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean nullPlusNonNullIsNull() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports the JDBC scalar function
* CONVERT for the conversion of one JDBC type to another.
* The JDBC types are the generic SQL data types defined
* in java.sql.Types.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsConvert() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports the JDBC scalar function
* CONVERT for conversions between the JDBC types fromType
* and toType. The JDBC types are the generic SQL data types defined
* in java.sql.Types.
*
* @param fromType the type to convert from; one of the type codes from
* the class java.sql.Types
* @param toType the type to convert to; one of the type codes from
* the class java.sql.Types
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @see Types
*/
@Override
public boolean supportsConvert(int fromType, int toType) throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports table correlation names.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsTableCorrelationNames() throws SQLException
{
return true;
}
/**
* Retrieves whether, when table correlation names are supported, they
* are restricted to being different from the names of the tables.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsDifferentTableCorrelationNames() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports expressions in
* ORDER BY lists.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsExpressionsInOrderBy() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports using a column that is
* not in the SELECT statement in an
* ORDER BY clause.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsOrderByUnrelated() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports some form of
* GROUP BY clause.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsGroupBy() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports using a column that is
* not in the SELECT statement in a
* GROUP BY clause.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsGroupByUnrelated() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports using columns not included in
* the SELECT statement in a GROUP BY clause
* provided that all of the columns in the SELECT statement
* are included in the GROUP BY clause.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsGroupByBeyondSelect() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports specifying a
* LIKE escape clause.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsLikeEscapeClause() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports getting multiple
* ResultSet objects from a single call to the
* method execute.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsMultipleResultSets() throws SQLException
{
return false;
}
/**
* Retrieves whether this database allows having multiple
* transactions open at once (on different connections).
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsMultipleTransactions() throws SQLException
{
return true;
}
/**
* Retrieves whether columns in this database may be defined as non-nullable.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsNonNullableColumns() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports the ODBC Minimum SQL grammar.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsMinimumSQLGrammar() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports the ODBC Core SQL grammar.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsCoreSQLGrammar() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports the ODBC Extended SQL grammar.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsExtendedSQLGrammar() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports the ANSI92 entry level SQL
* grammar.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsANSI92EntryLevelSQL() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports the ANSI92 intermediate SQL grammar supported.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsANSI92IntermediateSQL() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports the ANSI92 full SQL grammar supported.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsANSI92FullSQL() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports the SQL Integrity
* Enhancement Facility.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsIntegrityEnhancementFacility() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports some form of outer join.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsOuterJoins() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports full nested outer joins.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsFullOuterJoins() throws SQLException
{
return false;
}
/**
* Retrieves whether this database provides limited support for outer
* joins. (This will be true if the method
* supportsFullOuterJoins returns true).
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsLimitedOuterJoins() throws SQLException
{
return false;
}
/**
* Retrieves the database vendor's preferred term for "schema".
*
* @return the vendor term for "schema"
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getSchemaTerm() throws SQLException
{
return "NAMESPACE";
}
/**
* Retrieves the database vendor's preferred term for "procedure".
*
* @return the vendor term for "procedure"
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getProcedureTerm() throws SQLException
{
return "procedure";
}
/**
* Retrieves the database vendor's preferred term for "catalog".
*
* @return the vendor term for "catalog"
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getCatalogTerm() throws SQLException
{
return "namespace";
}
/**
* Retrieves whether a catalog appears at the start of a fully qualified
* table name. If not, the catalog appears at the end.
*
* @return true if the catalog name appears at the beginning
* of a fully qualified table name; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean isCatalogAtStart() throws SQLException
{
return true;
}
/**
* Retrieves the String that this database uses as the
* separator between a catalog and table name.
*
* @return the separator string
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public String getCatalogSeparator() throws SQLException
{
return ":";
}
/**
* Retrieves whether a schema name can be used in a data manipulation statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSchemasInDataManipulation() throws SQLException
{
return true;
}
/**
* Retrieves whether a schema name can be used in a procedure call statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSchemasInProcedureCalls() throws SQLException
{
return false;
}
/**
* Retrieves whether a schema name can be used in a table definition statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSchemasInTableDefinitions() throws SQLException
{
return false;
}
/**
* Retrieves whether a schema name can be used in an index definition statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSchemasInIndexDefinitions() throws SQLException
{
return true;
}
/**
* Retrieves whether a schema name can be used in a privilege definition statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException
{
return false;
}
/**
* Retrieves whether a catalog name can be used in a data manipulation statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsCatalogsInDataManipulation() throws SQLException
{
return true;
}
/**
* Retrieves whether a catalog name can be used in a procedure call statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsCatalogsInProcedureCalls() throws SQLException
{
return false;
}
/**
* Retrieves whether a catalog name can be used in a table definition statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsCatalogsInTableDefinitions() throws SQLException
{
return false;
}
/**
* Retrieves whether a catalog name can be used in an index definition statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsCatalogsInIndexDefinitions() throws SQLException
{
return true;
}
/**
* Retrieves whether a catalog name can be used in a privilege definition statement.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports positioned DELETE
* statements.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsPositionedDelete() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports positioned UPDATE
* statements.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsPositionedUpdate() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports SELECT FOR UPDATE
* statements.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSelectForUpdate() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports stored procedure calls
* that use the stored procedure escape syntax.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsStoredProcedures() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports subqueries in comparison
* expressions.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSubqueriesInComparisons() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports subqueries in
* EXISTS expressions.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSubqueriesInExists() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports subqueries in
* IN expressions.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSubqueriesInIns() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports subqueries in quantified
* expressions.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsSubqueriesInQuantifieds() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports correlated subqueries.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsCorrelatedSubqueries() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports SQL UNION.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsUnion() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports SQL UNION ALL.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsUnionAll() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports keeping cursors open
* across commits.
*
* @return true if cursors always remain open;
* false if they might not remain open
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsOpenCursorsAcrossCommit() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports keeping cursors open
* across rollbacks.
*
* @return true if cursors always remain open;
* false if they might not remain open
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsOpenCursorsAcrossRollback() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports keeping statements open
* across commits.
*
* @return true if statements always remain open;
* false if they might not remain open
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsOpenStatementsAcrossCommit() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports keeping statements open
* across rollbacks.
*
* @return true if statements always remain open;
* false if they might not remain open
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsOpenStatementsAcrossRollback() throws SQLException
{
return true;
}
/**
* Retrieves the maximum number of hex characters this database allows in an
* inline binary literal.
*
* @return max the maximum length (in hex characters) for a binary literal;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxBinaryLiteralLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters this database allows
* for a character literal.
*
* @return the maximum number of characters allowed for a character literal;
* a result of zero means that there is no limit or the limit is
* not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxCharLiteralLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters this database allows
* for a column name.
*
* @return the maximum number of characters allowed for a column name;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxColumnNameLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of columns this database allows in a
* GROUP BY clause.
*
* @return the maximum number of columns allowed;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxColumnsInGroupBy() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of columns this database allows in an index.
*
* @return the maximum number of columns allowed;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxColumnsInIndex() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of columns this database allows in an
* ORDER BY clause.
*
* @return the maximum number of columns allowed;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxColumnsInOrderBy() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of columns this database allows in a
* SELECT list.
*
* @return the maximum number of columns allowed;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxColumnsInSelect() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of columns this database allows in a table.
*
* @return the maximum number of columns allowed;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxColumnsInTable() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of concurrent connections to this
* database that are possible.
*
* @return the maximum number of active connections possible at one time;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxConnections() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters that this database allows in a
* cursor name.
*
* @return the maximum number of characters allowed in a cursor name;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxCursorNameLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of bytes this database allows for an
* index, including all of the parts of the index.
*
* @return the maximum number of bytes allowed; this limit includes the
* composite of all the constituent parts of the index;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxIndexLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters that this database allows in a
* schema name.
*
* @return the maximum number of characters allowed in a schema name;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxSchemaNameLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters that this database allows in a
* procedure name.
*
* @return the maximum number of characters allowed in a procedure name;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxProcedureNameLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters that this database allows in a
* catalog name.
*
* @return the maximum number of characters allowed in a catalog name;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxCatalogNameLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of bytes this database allows in
* a single row.
*
* @return the maximum number of bytes allowed for a row; a result of
* zero means that there is no limit or the limit is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxRowSize() throws SQLException
{
return 0;
}
/**
* Retrieves whether the return value for the method
* getMaxRowSize includes the SQL data types
* LONGVARCHAR and LONGVARBINARY.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean doesMaxRowSizeIncludeBlobs() throws SQLException
{
return true;
}
/**
* Retrieves the maximum number of characters this database allows in
* an SQL statement.
*
* @return the maximum number of characters allowed for an SQL statement;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxStatementLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of active statements to this database
* that can be open at the same time.
*
* @return the maximum number of statements that can be open at one time;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxStatements() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters this database allows in
* a table name.
*
* @return the maximum number of characters allowed for a table name;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxTableNameLength() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of tables this database allows in a
* SELECT statement.
*
* @return the maximum number of tables allowed in a SELECT
* statement; a result of zero means that there is no limit or
* the limit is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxTablesInSelect() throws SQLException
{
return 0;
}
/**
* Retrieves the maximum number of characters this database allows in
* a user name.
*
* @return the maximum number of characters allowed for a user name;
* a result of zero means that there is no limit or the limit
* is not known
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public int getMaxUserNameLength() throws SQLException
{
return 0;
}
/**
* Retrieves this database's default transaction isolation level. The
* possible values are defined in java.sql.Connection.
*
* @return the default isolation level
* @throws java.sql.SQLException if a database access error occurs
* @see Connection
*/
@Override
public int getDefaultTransactionIsolation() throws SQLException
{
return Connection.TRANSACTION_READ_UNCOMMITTED;
}
/**
* Retrieves whether this database supports transactions. If not, invoking the
* method commit is a noop, and the isolation level is
* TRANSACTION_NONE.
*
* @return true if transactions are supported;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsTransactions() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports the given transaction isolation level.
*
* @param level one of the transaction isolation levels defined in
* java.sql.Connection
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @see Connection
*/
@Override
public boolean supportsTransactionIsolationLevel(int level) throws SQLException
{
return Connection.TRANSACTION_READ_UNCOMMITTED==level;
}
/**
* Retrieves whether this database supports both data definition and
* data manipulation statements within a transaction.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException
{
return true;
}
/**
* Retrieves whether this database supports only data manipulation
* statements within a transaction.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean supportsDataManipulationTransactionsOnly() throws SQLException
{
return false;
}
/**
* Retrieves whether a data definition statement within a transaction forces
* the transaction to commit.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean dataDefinitionCausesTransactionCommit() throws SQLException
{
return false;
}
/**
* Retrieves whether this database ignores a data definition statement
* within a transaction.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public boolean dataDefinitionIgnoredInTransactions() throws SQLException
{
return false;
}
/**
* Retrieves a description of the stored procedures available in the given
* catalog.
*
* Only procedure descriptions matching the schema and
* procedure name criteria are returned. They are ordered by
* PROCEDURE_CAT, PROCEDURE_SCHEM,
* PROCEDURE_NAME and SPECIFIC_ NAME.
*
*
Each procedure description has the the following columns:
*
* - PROCEDURE_CAT String => procedure catalog (may be
null)
* - PROCEDURE_SCHEM String => procedure schema (may be
null)
* - PROCEDURE_NAME String => procedure name
* - reserved for future use
*
- reserved for future use
*
- reserved for future use
*
- REMARKS String => explanatory comment on the procedure
*
- PROCEDURE_TYPE short => kind of procedure:
*
* - procedureResultUnknown - Cannot determine if a return value
* will be returned
*
- procedureNoResult - Does not return a return value
*
- procedureReturnsResult - Returns a return value
*
* - SPECIFIC_NAME String => The name which uniquely identifies this
* procedure within its schema.
*
*
* A user may not have permissions to execute any of the procedures that are
* returned by getProcedures
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param procedureNamePattern a procedure name pattern; must match the
* procedure name as it is stored in the database
* @return ResultSet - each row is a procedure description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
*/
@Override
public ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the given catalog's stored procedure parameter
* and result columns.
*
* Only descriptions matching the schema, procedure and
* parameter name criteria are returned. They are ordered by
* PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME and SPECIFIC_NAME. Within this, the return value,
* if any, is first. Next are the parameter descriptions in call
* order. The column descriptions follow in column number order.
*
*
Each row in the ResultSet is a parameter description or
* column description with the following fields:
*
* - PROCEDURE_CAT String => procedure catalog (may be
null)
* - PROCEDURE_SCHEM String => procedure schema (may be
null)
* - PROCEDURE_NAME String => procedure name
*
- COLUMN_NAME String => column/parameter name
*
- COLUMN_TYPE Short => kind of column/parameter:
*
* - procedureColumnUnknown - nobody knows
*
- procedureColumnIn - IN parameter
*
- procedureColumnInOut - INOUT parameter
*
- procedureColumnOut - OUT parameter
*
- procedureColumnReturn - procedure return value
*
- procedureColumnResult - result column in
ResultSet
*
* - DATA_TYPE int => SQL type from java.sql.Types
*
- TYPE_NAME String => SQL type name, for a UDT type the
* type name is fully qualified
*
- PRECISION int => precision
*
- LENGTH int => length in bytes of data
*
- SCALE short => scale - null is returned for data types where
* SCALE is not applicable.
*
- RADIX short => radix
*
- NULLABLE short => can it contain NULL.
*
* - procedureNoNulls - does not allow NULL values
*
- procedureNullable - allows NULL values
*
- procedureNullableUnknown - nullability unknown
*
* - REMARKS String => comment describing parameter/column
*
- COLUMN_DEF String => default value for the column, which should be interpreted as a string when the value is enclosed in single quotes (may be
null)
*
* - The string NULL (not enclosed in quotes) - if NULL was specified as the default value
*
- TRUNCATE (not enclosed in quotes) - if the specified default value cannot be represented without truncation
*
- NULL - if a default value was not specified
*
* - SQL_DATA_TYPE int => reserved for future use
*
- SQL_DATETIME_SUB int => reserved for future use
*
- CHAR_OCTET_LENGTH int => the maximum length of binary and character based columns. For any other datatype the returned value is a
* NULL
*
- ORDINAL_POSITION int => the ordinal position, starting from 1, for the input and output parameters for a procedure. A value of 0
* is returned if this row describes the procedure's return value. For result set columns, it is the
* ordinal position of the column in the result set starting from 1. If there are
* multiple result sets, the column ordinal positions are implementation
* defined.
*
- IS_NULLABLE String => ISO rules are used to determine the nullability for a column.
*
* - YES --- if the column can include NULLs
*
- NO --- if the column cannot include NULLs
*
- empty string --- if the nullability for the
* column is unknown
*
* - SPECIFIC_NAME String => the name which uniquely identifies this procedure within its schema.
*
*
* Note: Some databases may not return the column
* descriptions for a procedure.
*
*
The PRECISION column represents the specified column size for the given column.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. Null is returned for data types where the
* column size is not applicable.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param procedureNamePattern a procedure name pattern; must match the
* procedure name as it is stored in the database
* @param columnNamePattern a column name pattern; must match the column name
* as it is stored in the database
* @return ResultSet - each row describes a stored procedure parameter or
* column
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
*/
@Override
public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the tables available in the given catalog.
* Only table descriptions matching the catalog, schema, table
* name and type criteria are returned. They are ordered by
* TABLE_TYPE, TABLE_CAT,
* TABLE_SCHEM and TABLE_NAME.
*
* Each table description has the following columns:
*
* - TABLE_CAT String => table catalog (may be
null)
* - TABLE_SCHEM String => table schema (may be
null)
* - TABLE_NAME String => table name
*
- TABLE_TYPE String => table type. Typical types are "TABLE",
* "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY",
* "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
*
- REMARKS String => explanatory comment on the table
*
- TYPE_CAT String => the types catalog (may be
null)
* - TYPE_SCHEM String => the types schema (may be
null)
* - TYPE_NAME String => type name (may be
null)
* - SELF_REFERENCING_COL_NAME String => name of the designated
* "identifier" column of a typed table (may be
null)
* - REF_GENERATION String => specifies how values in
* SELF_REFERENCING_COL_NAME are created. Values are
* "SYSTEM", "USER", "DERIVED". (may be
null)
*
*
* Note: Some databases may not return information for
* all tables.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param tableNamePattern a table name pattern; must match the
* table name as it is stored in the database
* @param types a list of table types, which must be from the list of table types
* returned from {@link #getTableTypes},to include; null returns
* all types
* @return ResultSet - each row is a table description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
*/
@Override
public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException
{
String sql = "select null as TABLE_CAT, namespace_id as TABLE_SCHEM, name as TABLE_NAME, 'TABLE' as TABLE_TYPE, null as REMARKS, null as TYPE_CAT, null as TYPE_SCHEM," +
"null as TYPE_NAME, null as SELF_REFERENCING_COL_NAME, null as REF_GENERATION from system:keyspaces";
if (schemaPattern != null || tableNamePattern != null)
{
sql += " where ";
if ( schemaPattern != null )
{
sql += "namespace_id like '" + schemaPattern + "'";
}
if ( schemaPattern != null && tableNamePattern != null )
{
sql += " and ";
}
if (tableNamePattern != null )
{
sql += "name LIKE '" + tableNamePattern +"'";
}
}
try(Statement statement = connection.createStatement())
{
return statement.executeQuery(sql);
}
}
/**
* Retrieves the schema names available in this database. The results
* are ordered by TABLE_CATALOG and
* TABLE_SCHEM.
*
*
The schema columns are:
*
* - TABLE_SCHEM String => schema name
*
- TABLE_CATALOG String => catalog name (may be
null)
*
*
* @return a ResultSet object in which each row is a
* schema description
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getSchemas() throws SQLException
{
return getSchemas(null, null);
}
/**
* Retrieves the catalog names available in this database. The results
* are ordered by catalog name.
*
* The catalog column is:
*
* - TABLE_CAT String => catalog name
*
*
* @return a ResultSet object in which each row has a
* single String column that is a catalog name
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getCatalogs() throws SQLException
{
String sql = "select name as TABLE_CAT from system:namespaces";
try( Statement statement = connection.createStatement())
{
return statement.executeQuery( sql );
}
}
/**
* Retrieves the table types available in this database. The results
* are ordered by table type.
*
* The table type is:
*
* - TABLE_TYPE String => table type. Typical types are "TABLE",
* "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY",
* "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
*
*
* @return a ResultSet object in which each row has a
* single String column that is a table type
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getTableTypes() throws SQLException
{
List > catalogs = new ArrayList>(2);
Map table = new HashMap();
////SYSTEM; BUCKET; GSI INDEX; VIEW INDEX
table.put("TABLE_TYPE","SYSTEM");
catalogs.add(table);
table = new HashMap<>();
table.put("TABLE_TYPE", "BUCKET");
catalogs.add(table);
table = new HashMap<>();
table.put("TABLE_TYPE", "GSI INDEX");
catalogs.add(table);
table = new HashMap<>();
table.put("TABLE_TYPE", "VIEW INDEX");
catalogs.add(table);
CouchMetrics metrics = new CouchMetrics();
metrics.setResultCount(table.size());
// this just has to be not 0
metrics.setResultSize(1);
@SuppressWarnings("unchecked")
Map signature = new HashMap();
signature.put("TABLE_TYPE","string");
CouchResponse couchResponse = new CouchResponse();
couchResponse.setResults(catalogs);
couchResponse.setMetrics(metrics);
couchResponse.setSignature(signature);
return new CBResultSet(null, couchResponse);
}
/**
* Retrieves a description of table columns available in
* the specified catalog.
*
* Only column descriptions matching the catalog, schema, table
* and column name criteria are returned. They are ordered by
* TABLE_CAT,TABLE_SCHEM,
* TABLE_NAME, and ORDINAL_POSITION.
*
*
Each column description has the following columns:
*
* - TABLE_CAT String => table catalog (may be
null)
* - TABLE_SCHEM String => table schema (may be
null)
* - TABLE_NAME String => table name
*
- COLUMN_NAME String => column name
*
- DATA_TYPE int => SQL type from java.sql.Types
*
- TYPE_NAME String => Data source dependent type name,
* for a UDT the type name is fully qualified
*
- COLUMN_SIZE int => column size.
*
- BUFFER_LENGTH is not used.
*
- DECIMAL_DIGITS int => the number of fractional digits. Null is returned for data types where
* DECIMAL_DIGITS is not applicable.
*
- NUM_PREC_RADIX int => Radix (typically either 10 or 2)
*
- NULLABLE int => is NULL allowed.
*
* - columnNoNulls - might not allow
NULL values
* - columnNullable - definitely allows
NULL values
* - columnNullableUnknown - nullability unknown
*
* - REMARKS String => comment describing column (may be
null)
* - COLUMN_DEF String => default value for the column, which should be interpreted as a string when the value is enclosed in single quotes (may be
null)
* - SQL_DATA_TYPE int => unused
*
- SQL_DATETIME_SUB int => unused
*
- CHAR_OCTET_LENGTH int => for char types the
* maximum number of bytes in the column
*
- ORDINAL_POSITION int => index of column in table
* (starting at 1)
*
- IS_NULLABLE String => ISO rules are used to determine the nullability for a column.
*
* - YES --- if the column can include NULLs
*
- NO --- if the column cannot include NULLs
*
- empty string --- if the nullability for the
* column is unknown
*
* - SCOPE_CATALOG String => catalog of table that is the scope
* of a reference attribute (
null if DATA_TYPE isn't REF)
* - SCOPE_SCHEMA String => schema of table that is the scope
* of a reference attribute (
null if the DATA_TYPE isn't REF)
* - SCOPE_TABLE String => table name that this the scope
* of a reference attribute (
null if the DATA_TYPE isn't REF)
* - SOURCE_DATA_TYPE short => source type of a distinct type or user-generated
* Ref type, SQL type from java.sql.Types (
null if DATA_TYPE
* isn't DISTINCT or user-generated REF)
* - IS_AUTOINCREMENT String => Indicates whether this column is auto incremented
*
* - YES --- if the column is auto incremented
*
- NO --- if the column is not auto incremented
*
- empty string --- if it cannot be determined whether the column is auto incremented
*
* - IS_GENERATEDCOLUMN String => Indicates whether this is a generated column
*
* - YES --- if this a generated column
*
- NO --- if this not a generated column
*
- empty string --- if it cannot be determined whether this is a generated column
*
*
*
* The COLUMN_SIZE column specifies the column size for the given column.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. Null is returned for data types where the
* column size is not applicable.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param tableNamePattern a table name pattern; must match the
* table name as it is stored in the database
* @param columnNamePattern a column name pattern; must match the column
* name as it is stored in the database
* @return ResultSet - each row is a column description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
*/
@Override
public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the access rights for a table's columns.
*
*
Only privileges matching the column name criteria are
* returned. They are ordered by COLUMN_NAME and PRIVILEGE.
*
*
Each privilige description has the following columns:
*
* - TABLE_CAT String => table catalog (may be
null)
* - TABLE_SCHEM String => table schema (may be
null)
* - TABLE_NAME String => table name
*
- COLUMN_NAME String => column name
*
- GRANTOR String => grantor of access (may be
null)
* - GRANTEE String => grantee of access
*
- PRIVILEGE String => name of access (SELECT,
* INSERT, UPDATE, REFRENCES, ...)
*
- IS_GRANTABLE String => "YES" if grantee is permitted
* to grant to others; "NO" if not;
null if unknown
*
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schema a schema name; must match the schema name as it is
* stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param table a table name; must match the table name as it is
* stored in the database
* @param columnNamePattern a column name pattern; must match the column
* name as it is stored in the database
* @return ResultSet - each row is a column privilege description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
*/
@Override
public ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the access rights for each table available
* in a catalog. Note that a table privilege applies to one or
* more columns in the table. It would be wrong to assume that
* this privilege applies to all columns (this may be true for
* some systems but is not true for all.)
*
* Only privileges matching the schema and table name
* criteria are returned. They are ordered by
* TABLE_CAT,
* TABLE_SCHEM, TABLE_NAME,
* and PRIVILEGE.
*
*
Each privilige description has the following columns:
*
* - TABLE_CAT String => table catalog (may be
null)
* - TABLE_SCHEM String => table schema (may be
null)
* - TABLE_NAME String => table name
*
- GRANTOR String => grantor of access (may be
null)
* - GRANTEE String => grantee of access
*
- PRIVILEGE String => name of access (SELECT,
* INSERT, UPDATE, REFRENCES, ...)
*
- IS_GRANTABLE String => "YES" if grantee is permitted
* to grant to others; "NO" if not;
null if unknown
*
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param tableNamePattern a table name pattern; must match the
* table name as it is stored in the database
* @return ResultSet - each row is a table privilege description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
*/
@Override
public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of a table's optimal set of columns that
* uniquely identifies a row. They are ordered by SCOPE.
*
* Each column description has the following columns:
*
* - SCOPE short => actual scope of result
*
* - bestRowTemporary - very temporary, while using row
*
- bestRowTransaction - valid for remainder of current transaction
*
- bestRowSession - valid for remainder of current session
*
* - COLUMN_NAME String => column name
*
- DATA_TYPE int => SQL data type from java.sql.Types
*
- TYPE_NAME String => Data source dependent type name,
* for a UDT the type name is fully qualified
*
- COLUMN_SIZE int => precision
*
- BUFFER_LENGTH int => not used
*
- DECIMAL_DIGITS short => scale - Null is returned for data types where
* DECIMAL_DIGITS is not applicable.
*
- PSEUDO_COLUMN short => is this a pseudo column
* like an Oracle ROWID
*
* - bestRowUnknown - may or may not be pseudo column
*
- bestRowNotPseudo - is NOT a pseudo column
*
- bestRowPseudo - is a pseudo column
*
*
*
* The COLUMN_SIZE column represents the specified column size for the given column.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. Null is returned for data types where the
* column size is not applicable.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schema a schema name; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param table a table name; must match the table name as it is stored
* in the database
* @param scope the scope of interest; use same values as SCOPE
* @param nullable include columns that are nullable.
* @return ResultSet - each row is a column description
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of a table's columns that are automatically
* updated when any value in a row is updated. They are
* unordered.
*
*
Each column description has the following columns:
*
* - SCOPE short => is not used
*
- COLUMN_NAME String => column name
*
- DATA_TYPE int => SQL data type from
java.sql.Types
* - TYPE_NAME String => Data source-dependent type name
*
- COLUMN_SIZE int => precision
*
- BUFFER_LENGTH int => length of column value in bytes
*
- DECIMAL_DIGITS short => scale - Null is returned for data types where
* DECIMAL_DIGITS is not applicable.
*
- PSEUDO_COLUMN short => whether this is pseudo column
* like an Oracle ROWID
*
* - versionColumnUnknown - may or may not be pseudo column
*
- versionColumnNotPseudo - is NOT a pseudo column
*
- versionColumnPseudo - is a pseudo column
*
*
*
* The COLUMN_SIZE column represents the specified column size for the given column.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. Null is returned for data types where the
* column size is not applicable.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schema a schema name; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param table a table name; must match the table name as it is stored
* in the database
* @return a ResultSet object in which each row is a
* column description
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the given table's primary key columns. They
* are ordered by COLUMN_NAME.
*
*
Each primary key column description has the following columns:
*
* - TABLE_CAT String => table catalog (may be
null)
* - TABLE_SCHEM String => table schema (may be
null)
* - TABLE_NAME String => table name
*
- COLUMN_NAME String => column name
*
- KEY_SEQ short => sequence number within primary key( a value
* of 1 represents the first column of the primary key, a value of 2 would
* represent the second column within the primary key).
*
- PK_NAME String => primary key name (may be
null)
*
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schema a schema name; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param table a table name; must match the table name as it is stored
* in the database
* @return ResultSet - each row is a primary key column description
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException
{
String sql = "select null as TABLE_CAT, namespace_id as TABLE_SCHEM, keyspace_id as TABLE_NAME, 'id' as COLUMN_NAME, 1 as KEY_SEQ, name as PK_NAME from system:indexes where is_primary = true";
if (schema != null )
{
sql += " and namespace_id like " + schema;
}
if (table != null)
{
sql += " and keyspace_id like " + table;
}
try(Statement statement = connection.createStatement())
{
return statement.executeQuery(sql);
}
}
/**
* Retrieves a description of the primary key columns that are
* referenced by the given table's foreign key columns (the primary keys
* imported by a table). They are ordered by PKTABLE_CAT,
* PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.
*
* Each primary key column description has the following columns:
*
* - PKTABLE_CAT String => primary key table catalog
* being imported (may be
null)
* - PKTABLE_SCHEM String => primary key table schema
* being imported (may be
null)
* - PKTABLE_NAME String => primary key table name
* being imported
*
- PKCOLUMN_NAME String => primary key column name
* being imported
*
- FKTABLE_CAT String => foreign key table catalog (may be
null)
* - FKTABLE_SCHEM String => foreign key table schema (may be
null)
* - FKTABLE_NAME String => foreign key table name
*
- FKCOLUMN_NAME String => foreign key column name
*
- KEY_SEQ short => sequence number within a foreign key( a value
* of 1 represents the first column of the foreign key, a value of 2 would
* represent the second column within the foreign key).
*
- UPDATE_RULE short => What happens to a
* foreign key when the primary key is updated:
*
* - importedNoAction - do not allow update of primary
* key if it has been imported
*
- importedKeyCascade - change imported key to agree
* with primary key update
*
- importedKeySetNull - change imported key to
NULL
* if its primary key has been updated
* - importedKeySetDefault - change imported key to default values
* if its primary key has been updated
*
- importedKeyRestrict - same as importedKeyNoAction
* (for ODBC 2.x compatibility)
*
* - DELETE_RULE short => What happens to
* the foreign key when primary is deleted.
*
* - importedKeyNoAction - do not allow delete of primary
* key if it has been imported
*
- importedKeyCascade - delete rows that import a deleted key
*
- importedKeySetNull - change imported key to NULL if
* its primary key has been deleted
*
- importedKeyRestrict - same as importedKeyNoAction
* (for ODBC 2.x compatibility)
*
- importedKeySetDefault - change imported key to default if
* its primary key has been deleted
*
* - FK_NAME String => foreign key name (may be
null)
* - PK_NAME String => primary key name (may be
null)
* - DEFERRABILITY short => can the evaluation of foreign key
* constraints be deferred until commit
*
* - importedKeyInitiallyDeferred - see SQL92 for definition
*
- importedKeyInitiallyImmediate - see SQL92 for definition
*
- importedKeyNotDeferrable - see SQL92 for definition
*
*
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schema a schema name; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param table a table name; must match the table name as it is stored
* in the database
* @return ResultSet - each row is a primary key column description
* @throws java.sql.SQLException if a database access error occurs
* @see #getExportedKeys
*/
@Override
public ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the foreign key columns that reference the
* given table's primary key columns (the foreign keys exported by a
* table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM,
* FKTABLE_NAME, and KEY_SEQ.
*
* Each foreign key column description has the following columns:
*
* - PKTABLE_CAT String => primary key table catalog (may be
null)
* - PKTABLE_SCHEM String => primary key table schema (may be
null)
* - PKTABLE_NAME String => primary key table name
*
- PKCOLUMN_NAME String => primary key column name
*
- FKTABLE_CAT String => foreign key table catalog (may be
null)
* being exported (may be null)
* - FKTABLE_SCHEM String => foreign key table schema (may be
null)
* being exported (may be null)
* - FKTABLE_NAME String => foreign key table name
* being exported
*
- FKCOLUMN_NAME String => foreign key column name
* being exported
*
- KEY_SEQ short => sequence number within foreign key( a value
* of 1 represents the first column of the foreign key, a value of 2 would
* represent the second column within the foreign key).
*
- UPDATE_RULE short => What happens to
* foreign key when primary is updated:
*
* - importedNoAction - do not allow update of primary
* key if it has been imported
*
- importedKeyCascade - change imported key to agree
* with primary key update
*
- importedKeySetNull - change imported key to
NULL if
* its primary key has been updated
* - importedKeySetDefault - change imported key to default values
* if its primary key has been updated
*
- importedKeyRestrict - same as importedKeyNoAction
* (for ODBC 2.x compatibility)
*
* - DELETE_RULE short => What happens to
* the foreign key when primary is deleted.
*
* - importedKeyNoAction - do not allow delete of primary
* key if it has been imported
*
- importedKeyCascade - delete rows that import a deleted key
*
- importedKeySetNull - change imported key to
NULL if
* its primary key has been deleted
* - importedKeyRestrict - same as importedKeyNoAction
* (for ODBC 2.x compatibility)
*
- importedKeySetDefault - change imported key to default if
* its primary key has been deleted
*
* - FK_NAME String => foreign key name (may be
null)
* - PK_NAME String => primary key name (may be
null)
* - DEFERRABILITY short => can the evaluation of foreign key
* constraints be deferred until commit
*
* - importedKeyInitiallyDeferred - see SQL92 for definition
*
- importedKeyInitiallyImmediate - see SQL92 for definition
*
- importedKeyNotDeferrable - see SQL92 for definition
*
*
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in this database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schema a schema name; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param table a table name; must match the table name as it is stored
* in this database
* @return a ResultSet object in which each row is a
* foreign key column description
* @throws java.sql.SQLException if a database access error occurs
* @see #getImportedKeys
*/
@Override
public ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the foreign key columns in the given foreign key
* table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table).
* The number of columns returned from the parent table must match the number of
* columns that make up the foreign key. They
* are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and
* KEY_SEQ.
*
* Each foreign key column description has the following columns:
*
* - PKTABLE_CAT String => parent key table catalog (may be
null)
* - PKTABLE_SCHEM String => parent key table schema (may be
null)
* - PKTABLE_NAME String => parent key table name
*
- PKCOLUMN_NAME String => parent key column name
*
- FKTABLE_CAT String => foreign key table catalog (may be
null)
* being exported (may be null)
* - FKTABLE_SCHEM String => foreign key table schema (may be
null)
* being exported (may be null)
* - FKTABLE_NAME String => foreign key table name
* being exported
*
- FKCOLUMN_NAME String => foreign key column name
* being exported
*
- KEY_SEQ short => sequence number within foreign key( a value
* of 1 represents the first column of the foreign key, a value of 2 would
* represent the second column within the foreign key).
*
- UPDATE_RULE short => What happens to
* foreign key when parent key is updated:
*
* - importedNoAction - do not allow update of parent
* key if it has been imported
*
- importedKeyCascade - change imported key to agree
* with parent key update
*
- importedKeySetNull - change imported key to
NULL if
* its parent key has been updated
* - importedKeySetDefault - change imported key to default values
* if its parent key has been updated
*
- importedKeyRestrict - same as importedKeyNoAction
* (for ODBC 2.x compatibility)
*
* - DELETE_RULE short => What happens to
* the foreign key when parent key is deleted.
*
* - importedKeyNoAction - do not allow delete of parent
* key if it has been imported
*
- importedKeyCascade - delete rows that import a deleted key
*
- importedKeySetNull - change imported key to
NULL if
* its primary key has been deleted
* - importedKeyRestrict - same as importedKeyNoAction
* (for ODBC 2.x compatibility)
*
- importedKeySetDefault - change imported key to default if
* its parent key has been deleted
*
* - FK_NAME String => foreign key name (may be
null)
* - PK_NAME String => parent key name (may be
null)
* - DEFERRABILITY short => can the evaluation of foreign key
* constraints be deferred until commit
*
* - importedKeyInitiallyDeferred - see SQL92 for definition
*
- importedKeyInitiallyImmediate - see SQL92 for definition
*
- importedKeyNotDeferrable - see SQL92 for definition
*
*
*
* @param parentCatalog a catalog name; must match the catalog name
* as it is stored in the database; "" retrieves those without a
* catalog; null means drop catalog name from the selection criteria
* @param parentSchema a schema name; must match the schema name as
* it is stored in the database; "" retrieves those without a schema;
* null means drop schema name from the selection criteria
* @param parentTable the name of the table that exports the key; must match
* the table name as it is stored in the database
* @param foreignCatalog a catalog name; must match the catalog name as
* it is stored in the database; "" retrieves those without a
* catalog; null means drop catalog name from the selection criteria
* @param foreignSchema a schema name; must match the schema name as it
* is stored in the database; "" retrieves those without a schema;
* null means drop schema name from the selection criteria
* @param foreignTable the name of the table that imports the key; must match
* the table name as it is stored in the database
* @return ResultSet - each row is a foreign key column description
* @throws java.sql.SQLException if a database access error occurs
* @see #getImportedKeys
*/
@Override
public ResultSet getCrossReference(String parentCatalog, String parentSchema, String parentTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of all the data types supported by
* this database. They are ordered by DATA_TYPE and then by how
* closely the data type maps to the corresponding JDBC SQL type.
*
* If the database supports SQL distinct types, then getTypeInfo() will return
* a single row with a TYPE_NAME of DISTINCT and a DATA_TYPE of Types.DISTINCT.
* If the database supports SQL structured types, then getTypeInfo() will return
* a single row with a TYPE_NAME of STRUCT and a DATA_TYPE of Types.STRUCT.
*
*
If SQL distinct or structured types are supported, then information on the
* individual types may be obtained from the getUDTs() method.
*
*
*
*
Each type description has the following columns:
*
* - TYPE_NAME String => Type name
*
- DATA_TYPE int => SQL data type from java.sql.Types
*
- PRECISION int => maximum precision
*
- LITERAL_PREFIX String => prefix used to quote a literal
* (may be
null)
* - LITERAL_SUFFIX String => suffix used to quote a literal
* (may be
null)
* - CREATE_PARAMS String => parameters used in creating
* the type (may be
null)
* - NULLABLE short => can you use NULL for this type.
*
* - typeNoNulls - does not allow NULL values
*
- typeNullable - allows NULL values
*
- typeNullableUnknown - nullability unknown
*
* - CASE_SENSITIVE boolean=> is it case sensitive.
*
- SEARCHABLE short => can you use "WHERE" based on this type:
*
* - typePredNone - No support
*
- typePredChar - Only supported with WHERE .. LIKE
*
- typePredBasic - Supported except for WHERE .. LIKE
*
- typeSearchable - Supported for all WHERE ..
*
* - UNSIGNED_ATTRIBUTE boolean => is it unsigned.
*
- FIXED_PREC_SCALE boolean => can it be a money value.
*
- AUTO_INCREMENT boolean => can it be used for an
* auto-increment value.
*
- LOCAL_TYPE_NAME String => localized version of type name
* (may be
null)
* - MINIMUM_SCALE short => minimum scale supported
*
- MAXIMUM_SCALE short => maximum scale supported
*
- SQL_DATA_TYPE int => unused
*
- SQL_DATETIME_SUB int => unused
*
- NUM_PREC_RADIX int => usually 2 or 10
*
*
* The PRECISION column represents the maximum column size that the server supports for the given datatype.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. Null is returned for data types where the
* column size is not applicable.
*
* @return a ResultSet object in which each row is an SQL
* type description
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getTypeInfo() throws SQLException
{
/*
TYPE_NAME: NUMERIC, DATA_TYPE: -5, PRECISION: 19, LITERAL_PREFIX: null, LITERAL_SUFFIX: null, CREATE_PARAMS: null, NULLABLE: 1, CASE_SENSITIVE: 0, SEARCHABLE: 2, UNSIGNED_ATTRIBUTE: 0, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: NUMERIC, MINIMUM_SCALE: 0, MAXIMUM_SCALE: 0, SQL_DATA_TYPE: -5, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: 10,
TYPE_NAME: NULL, DATA_TYPE: 0, PRECISION: 0, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: LENGTH, NULLABLE: 1, CASE_SENSITIVE: 1, SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: NULL, MINIMUM_SCALE: null, MAXIMUM_SCALE: null, SQL_DATA_TYPE: 0, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
TYPE_NAME: NUMERIC, DATA_TYPE: 4, PRECISION: 10, LITERAL_PREFIX: null, LITERAL_SUFFIX: null, CREATE_PARAMS: null, NULLABLE: 1, CASE_SENSITIVE: 0, SEARCHABLE: 2, UNSIGNED_ATTRIBUTE: 0, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: NUMERIC, MINIMUM_SCALE: 0, MAXIMUM_SCALE: 0, SQL_DATA_TYPE: 4, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: 10,
TYPE_NAME: NUMERIC, DATA_TYPE: 8, PRECISION: 15, LITERAL_PREFIX: null, LITERAL_SUFFIX: null, CREATE_PARAMS: null, NULLABLE: 1, CASE_SENSITIVE: 0, SEARCHABLE: 2, UNSIGNED_ATTRIBUTE: 0, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: NUMERIC, MINIMUM_SCALE: null, MAXIMUM_SCALE: null, SQL_DATA_TYPE: 8, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: 2,
TYPE_NAME: ARRAY, DATA_TYPE: 12, PRECISION: 65500, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1, SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: ARRAY, MINIMUM_SCALE: null, MAXIMUM_SCALE: null, SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
TYPE_NAME: MISSING, DATA_TYPE: 12, PRECISION: 255, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1, SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: MISSING, MINIMUM_SCALE: null, MAXIMUM_SCALE: null, SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
TYPE_NAME: OBJECT, DATA_TYPE: 12, PRECISION: 65500, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1, SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: OBJECT, MINIMUM_SCALE: null, MAXIMUM_SCALE: null, SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
TYPE_NAME: STRING, DATA_TYPE: 12, PRECISION: 510, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1, SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: STRING, MINIMUM_SCALE: null, MAXIMUM_SCALE: null, SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
TYPE_NAME: BOOLEAN, DATA_TYPE: 16, PRECISION: 1, LITERAL_PREFIX: null, LITERAL_SUFFIX: null, CREATE_PARAMS: null, NULLABLE: 1, CASE_SENSITIVE: 0, SEARCHABLE: 2, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: BOOLEAN, MINIMUM_SCALE: null, MAXIMUM_SCALE: null, SQL_DATA_TYPE: 16, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null"
*/
List > types = new ArrayList<>(2);
Map type = new HashMap<>(32);
types.add(type);
// TYPE_NAME: NUMERIC, DATA_TYPE: 2, PRECISION: 38, LITERAL_PREFIX: null, LITERAL_SUFFIX: null, CREATE_PARAMS: precision,scale, NULLABLE: 1, CASE_SENSITIVE: 0,
// SEARCHABLE: 2, UNSIGNED_ATTRIBUTE: 0, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: NUMERIC, MINIMUM_SCALE: 0, MAXIMUM_SCALE: 38, SQL_DATA_TYPE: 2,
// SQL_DATETIME_SUB: null, NUM_PREC_RADIX: 10,
type.put("TYPE_NAME", "NUMERIC");
type.put("DATA_TYPE", Types.NUMERIC);
type.put("PRECISION", 38);
type.put("LITERAL_PREFIX", null);
type.put("LITERAL_SUFFIX", null);
type.put("CREATE_PARMS", "precision,scale");
type.put("NULLABLE", typeNullable);
type.put("CASE_SENSITIVE", false);
type.put("SEARCHABLE", typePredBasic);
type.put("UNSIGNED_ATTRIBUTE", false);
type.put("FIXED_PREC_SCALE", false);
type.put("AUTO_INCREMENT", null);
type.put("LOCAL_TYPE_NAME", "NUMERIC");
type.put("MINIMUM_SCALE", 0);
type.put("MAXIMUM_SCALE", 38);
type.put("SQL_DATA_TYPE", 2);
type.put("SQL_DATETIME_SUB",null);
type.put("NUM_PREC_RADIX", 10);
types.add(type);
type = new HashMap<>(32);
//TYPE_NAME: NULL, DATA_TYPE: 0, PRECISION: 0, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: LENGTH, NULLABLE: 1, CASE_SENSITIVE: 1,
// SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: NULL, MINIMUM_SCALE: null, MAXIMUM_SCALE: null,
// SQL_DATA_TYPE: 0,SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
type.put("TYPE_NAME", "NULL");
type.put("DATA_TYPE", Types.NULL);
type.put("PRECISION", 0);
type.put("LITERAL_PREFIX", "'");
type.put("LITERAL_SUFFIX", "'");
type.put("CREATE_PARMS", "length");
type.put("NULLABLE", typeNullable);
type.put("CASE_SENSITIVE", true);
type.put("SEARCHABLE", typeSearchable);
type.put("UNSIGNED_ATTRIBUTE", null);
type.put("FIXED_PREC_SCALE", 0);
type.put("AUTO_INCREMENT", null);
type.put("LOCAL_TYPE_NAME", "NULL");
type.put("MINIMUM_SCALE", null);
type.put("MAXIMUM_SCALE", null);
type.put("SQL_DATA_TYPE", 0);
type.put("SQL_DATETIME_SUB",null);
type.put("NUM_PREC_RADIX", null);
//TYPE_NAME: ARRAY, DATA_TYPE: 12, PRECISION: 65500, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1,
// SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: ARRAY, MINIMUM_SCALE: null, MAXIMUM_SCALE: null,
// SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
types.add(type);
type = new HashMap<>(32);
type.put("TYPE_NAME", "ARRAY");
type.put("DATA_TYPE", Types.ARRAY);
type.put("PRECISION", 65500);
type.put("LITERAL_PREFIX", "'");
type.put("LITERAL_SUFFIX", "'");
type.put("CREATE_PARMS", "max length");
type.put("NULLABLE", typeNullable);
type.put("CASE_SENSITIVE", true);
type.put("SEARCHABLE", typeSearchable);
type.put("UNSIGNED_ATTRIBUTE", null);
type.put("FIXED_PREC_SCALE", 0);
type.put("AUTO_INCREMENT", null);
type.put("LOCAL_TYPE_NAME", "ARRAY");
type.put("MINIMUM_SCALE", null);
type.put("MAXIMUM_SCALE", null);
type.put("SQL_DATA_TYPE", Types.VARCHAR);
type.put("SQL_DATETIME_SUB",null);
type.put("NUM_PREC_RADIX", null);
types.add(type);
type = new HashMap<>(32);
// TYPE_NAME: MISSING, DATA_TYPE: 12, PRECISION: 255, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1,
// SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: MISSING, MINIMUM_SCALE: null, MAXIMUM_SCALE: null,
// SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
type.put("TYPE_NAME", "MISSING");
type.put("DATA_TYPE", Types.VARCHAR);
type.put("PRECISION", 255);
type.put("LITERAL_PREFIX", "'");
type.put("LITERAL_SUFFIX", "'");
type.put("CREATE_PARMS", "max length");
type.put("NULLABLE", typeNullable);
type.put("CASE_SENSITIVE", true);
type.put("SEARCHABLE", typeSearchable);
type.put("UNSIGNED_ATTRIBUTE", null);
type.put("FIXED_PREC_SCALE", 0);
type.put("AUTO_INCREMENT", null);
type.put("LOCAL_TYPE_NAME", "MISSING");
type.put("MINIMUM_SCALE", null);
type.put("MAXIMUM_SCALE", null);
type.put("SQL_DATA_TYPE", Types.VARCHAR);
type.put("SQL_DATETIME_SUB",null);
type.put("NUM_PREC_RADIX", null);
types.add(type);
type = new HashMap<>(32);
// TYPE_NAME: OBJECT, DATA_TYPE: 12, PRECISION: 65500, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1,
// SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: OBJECT, MINIMUM_SCALE: null, MAXIMUM_SCALE: null,
// SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
type.put("TYPE_NAME", "OBJECT");
type.put("DATA_TYPE", Types.VARCHAR);
type.put("PRECISION", 65500);
type.put("LITERAL_PREFIX", "'");
type.put("LITERAL_SUFFIX", "'");
type.put("CREATE_PARMS", "max length");
type.put("NULLABLE", typeNullable);
type.put("CASE_SENSITIVE", true);
type.put("SEARCHABLE", typeSearchable);
type.put("UNSIGNED_ATTRIBUTE", null);
type.put("FIXED_PREC_SCALE", 0);
type.put("AUTO_INCREMENT", null);
type.put("LOCAL_TYPE_NAME", "OBJECT");
type.put("MINIMUM_SCALE", null);
type.put("MAXIMUM_SCALE", null);
type.put("SQL_DATA_TYPE", Types.VARCHAR);
type.put("SQL_DATETIME_SUB",null);
type.put("NUM_PREC_RADIX", null);
types.add(type);
type = new HashMap<>(32);
// TYPE_NAME: STRING, DATA_TYPE: 12, PRECISION: 510, LITERAL_PREFIX: ', LITERAL_SUFFIX: ', CREATE_PARAMS: max length, NULLABLE: 1, CASE_SENSITIVE: 1,
// SEARCHABLE: 3, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: STRING, MINIMUM_SCALE: null, MAXIMUM_SCALE: null,
// SQL_DATA_TYPE: 12, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null,
type.put("TYPE_NAME", "STRING");
type.put("DATA_TYPE", Types.VARCHAR);
type.put("PRECISION", 510);
type.put("LITERAL_PREFIX", "'");
type.put("LITERAL_SUFFIX", "'");
type.put("CREATE_PARMS", "max length");
type.put("NULLABLE", typeNullable);
type.put("CASE_SENSITIVE", true);
type.put("SEARCHABLE", typeSearchable);
type.put("UNSIGNED_ATTRIBUTE", null);
type.put("FIXED_PREC_SCALE", 0);
type.put("AUTO_INCREMENT", null);
type.put("LOCAL_TYPE_NAME", "STRING");
type.put("MINIMUM_SCALE", null);
type.put("MAXIMUM_SCALE", null);
type.put("SQL_DATA_TYPE", Types.VARCHAR);
type.put("SQL_DATETIME_SUB",null);
type.put("NUM_PREC_RADIX", null);
types.add(type);
type = new HashMap<>(32);
// TYPE_NAME: BOOLEAN, DATA_TYPE: 16, PRECISION: 1, LITERAL_PREFIX: null, LITERAL_SUFFIX: null, CREATE_PARAMS: null, NULLABLE: 1, CASE_SENSITIVE: 0,
// SEARCHABLE: 2, UNSIGNED_ATTRIBUTE: null, FIXED_PREC_SCALE: 0, AUTO_INCREMENT: null, LOCAL_TYPE_NAME: BOOLEAN, MINIMUM_SCALE: null, MAXIMUM_SCALE: null,
// SQL_DATA_TYPE: 16, SQL_DATETIME_SUB: null, NUM_PREC_RADIX: null"
type.put("TYPE_NAME", "BOOLEAN");
type.put("DATA_TYPE", Types.BOOLEAN);
type.put("PRECISION", 1);
type.put("LITERAL_PREFIX", null);
type.put("LITERAL_SUFFIX", null);
type.put("CREATE_PARMS", null);
type.put("NULLABLE", typeNullable);
type.put("CASE_SENSITIVE", false);
type.put("SEARCHABLE", typePredBasic);
type.put("UNSIGNED_ATTRIBUTE", null);
type.put("FIXED_PREC_SCALE", 0);
type.put("AUTO_INCREMENT", null);
type.put("LOCAL_TYPE_NAME", "BOOLEAN");
type.put("MINIMUM_SCALE", null);
type.put("MAXIMUM_SCALE", null);
type.put("SQL_DATA_TYPE", Types.BOOLEAN);
type.put("SQL_DATETIME_SUB",null);
type.put("NUM_PREC_RADIX", null);
types.add(type);
@SuppressWarnings("unchecked")
Map signature = new HashMap();
signature.put("TYPE_NAME","string");
signature.put("DATA_TYPE","numeric");
signature.put("PRECISION","numeric");
signature.put("LITERAL_PREFIX","string");
signature.put("LITERAL_SUFFIX","string");
signature.put("CREATE_PARMS","string");
signature.put("NULLABLE","numeric");
signature.put("CASE_SENSITIVE","boolean");
signature.put("SEARCHABLE","numeric");
signature.put("UNSIGNED_ATTRIBUTE","boolean");
signature.put("FIXED_PREC_SCALE","boolean");
signature.put("AUTO_INCREMENT","boolean");
signature.put("LOCAL_TYPE_NAME","string");
signature.put("MINIMUM_SCALE","numeric");
signature.put("MAXIMUM_SCALE","numeric");
signature.put("SQL_DATA_TYPE","numeric");
signature.put("SQL_DATETIME_SUB","numeric");
signature.put("NUM_PREC_RADIX","numeric");
CouchMetrics metrics = new CouchMetrics();
metrics.setResultCount(types.size());
// this just has to be not 0
metrics.setResultSize(2);
CouchResponse couchResponse = new CouchResponse();
couchResponse.setResults(types);
couchResponse.setMetrics(metrics);
couchResponse.setSignature(signature);
return new CBResultSet(null, couchResponse);
}
/**
* Retrieves a description of the given table's indices and statistics. They are
* ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION.
*
* Each index column description has the following columns:
*
* - TABLE_CAT String => table catalog (may be
null)
* - TABLE_SCHEM String => table schema (may be
null)
* - TABLE_NAME String => table name
*
- NON_UNIQUE boolean => Can index values be non-unique.
* false when TYPE is tableIndexStatistic
*
- INDEX_QUALIFIER String => index catalog (may be
null);
* null when TYPE is tableIndexStatistic
* - INDEX_NAME String => index name;
null when TYPE is
* tableIndexStatistic
* - TYPE short => index type:
*
* - tableIndexStatistic - this identifies table statistics that are
* returned in conjuction with a table's index descriptions
*
- tableIndexClustered - this is a clustered index
*
- tableIndexHashed - this is a hashed index
*
- tableIndexOther - this is some other style of index
*
* - ORDINAL_POSITION short => column sequence number
* within index; zero when TYPE is tableIndexStatistic
*
- COLUMN_NAME String => column name;
null when TYPE is
* tableIndexStatistic
* - ASC_OR_DESC String => column sort sequence, "A" => ascending,
* "D" => descending, may be
null if sort sequence is not supported;
* null when TYPE is tableIndexStatistic
* - CARDINALITY int => When TYPE is tableIndexStatistic, then
* this is the number of rows in the table; otherwise, it is the
* number of unique values in the index.
*
- PAGES int => When TYPE is tableIndexStatisic then
* this is the number of pages used for the table, otherwise it
* is the number of pages used for the current index.
*
- FILTER_CONDITION String => Filter condition, if any.
* (may be
null)
*
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in this database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schema a schema name; must match the schema name
* as it is stored in this database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param table a table name; must match the table name as it is stored
* in this database
* @param unique when true, return only indices for unique values;
* when false, return indices regardless of whether unique or not
* @param approximate when true, result is allowed to reflect approximate
* or out of data values; when false, results are requested to be
* accurate
* @return ResultSet - each row is an index column description
* @throws java.sql.SQLException if a database access error occurs
*/
@Override
public ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves whether this database supports the given result set type.
*
* @param type defined in java.sql.ResultSet
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @see Connection
* @since 1.2
*/
@Override
public boolean supportsResultSetType(int type) throws SQLException
{
return type == ResultSet.TYPE_FORWARD_ONLY;
}
/**
* Retrieves whether this database supports the given concurrency type
* in combination with the given result set type.
*
* @param type defined in java.sql.ResultSet
* @param concurrency type defined in java.sql.ResultSet
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @see Connection
* @since 1.2
*/
@Override
public boolean supportsResultSetConcurrency(int type, int concurrency) throws SQLException
{
return false;
}
/**
* Retrieves whether for the given type of ResultSet object,
* the result set's own updates are visible.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if updates are visible for the given result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean ownUpdatesAreVisible(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether a result set's own deletes are visible.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if deletes are visible for the given result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean ownDeletesAreVisible(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether a result set's own inserts are visible.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if inserts are visible for the given result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean ownInsertsAreVisible(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether updates made by others are visible.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if updates made by others
* are visible for the given result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean othersUpdatesAreVisible(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether deletes made by others are visible.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if deletes made by others
* are visible for the given result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean othersDeletesAreVisible(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether inserts made by others are visible.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if inserts made by others
* are visible for the given result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean othersInsertsAreVisible(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether or not a visible row update can be detected by
* calling the method ResultSet.rowUpdated.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if changes are detected by the result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean updatesAreDetected(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether or not a visible row delete can be detected by
* calling the method ResultSet.rowDeleted. If the method
* deletesAreDetected returns false, it means that
* deleted rows are removed from the result set.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if deletes are detected by the given result set type;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean deletesAreDetected(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether or not a visible row insert can be detected
* by calling the method ResultSet.rowInserted.
*
* @param type the ResultSet type; one of
* ResultSet.TYPE_FORWARD_ONLY,
* ResultSet.TYPE_SCROLL_INSENSITIVE, or
* ResultSet.TYPE_SCROLL_SENSITIVE
* @return true if changes are detected by the specified result
* set type; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean insertsAreDetected(int type) throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports batch updates.
*
* @return true if this database supports batch upcates;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public boolean supportsBatchUpdates() throws SQLException
{
return true;
}
/**
* Retrieves a description of the user-defined types (UDTs) defined
* in a particular schema. Schema-specific UDTs may have type
* JAVA_OBJECT, STRUCT,
* or DISTINCT.
*
* Only types matching the catalog, schema, type name and type
* criteria are returned. They are ordered by DATA_TYPE,
* TYPE_CAT, TYPE_SCHEM and
* TYPE_NAME. The type name parameter may be a fully-qualified
* name. In this case, the catalog and schemaPattern parameters are
* ignored.
*
*
Each type description has the following columns:
*
* - TYPE_CAT String => the type's catalog (may be
null)
* - TYPE_SCHEM String => type's schema (may be
null)
* - TYPE_NAME String => type name
*
- CLASS_NAME String => Java class name
*
- DATA_TYPE int => type value defined in java.sql.Types.
* One of JAVA_OBJECT, STRUCT, or DISTINCT
*
- REMARKS String => explanatory comment on the type
*
- BASE_TYPE short => type code of the source type of a
* DISTINCT type or the type that implements the user-generated
* reference type of the SELF_REFERENCING_COLUMN of a structured
* type as defined in java.sql.Types (
null if DATA_TYPE is not
* DISTINCT or not STRUCT with REFERENCE_GENERATION = USER_DEFINED)
*
*
* Note: If the driver does not support UDTs, an empty
* result set is returned.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema pattern name; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param typeNamePattern a type name pattern; must match the type name
* as it is stored in the database; may be a fully qualified name
* @param types a list of user-defined types (JAVA_OBJECT,
* STRUCT, or DISTINCT) to include; null returns all types
* @return ResultSet object in which each row describes a UDT
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
* @since 1.2
*/
@Override
public ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types) throws SQLException
{
List > udts = new ArrayList<>(2);
CouchMetrics metrics = new CouchMetrics();
metrics.setResultCount(udts.size());
// this just has to be not 0
metrics.setResultSize(1);
@SuppressWarnings("unchecked") Map signature = new HashMap();
CouchResponse couchResponse = new CouchResponse();
couchResponse.setResults(udts);
couchResponse.setMetrics(metrics);
couchResponse.setSignature(signature);
return new CBResultSet(null, couchResponse);
}
/**
* Retrieves the connection that produced this metadata object.
*
*
* @return the connection that produced this metadata object
* @throws java.sql.SQLException if a database access error occurs
* @since 1.2
*/
@Override
public Connection getConnection() throws SQLException
{
return connection;
}
/**
* Retrieves whether this database supports savepoints.
*
* @return true if savepoints are supported;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public boolean supportsSavepoints() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports named parameters to callable
* statements.
*
* @return true if named parameters are supported;
* false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public boolean supportsNamedParameters() throws SQLException
{
return true;
}
/**
* Retrieves whether it is possible to have multiple ResultSet objects
* returned from a CallableStatement object
* simultaneously.
*
* @return true if a CallableStatement object
* can return multiple ResultSet objects
* simultaneously; false otherwise
* @throws java.sql.SQLException if a datanase access error occurs
* @since 1.4
*/
@Override
public boolean supportsMultipleOpenResults() throws SQLException
{
return false;
}
/**
* Retrieves whether auto-generated keys can be retrieved after
* a statement has been executed
*
* @return true if auto-generated keys can be retrieved
* after a statement has executed; false otherwise
* If true is returned, the JDBC driver must support the
* returning of auto-generated keys for at least SQL INSERT statements
*
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public boolean supportsGetGeneratedKeys() throws SQLException
{
return false;
}
/**
* Retrieves a description of the user-defined type (UDT) hierarchies defined in a
* particular schema in this database. Only the immediate super type/
* sub type relationship is modeled.
*
* Only supertype information for UDTs matching the catalog,
* schema, and type name is returned. The type name parameter
* may be a fully-qualified name. When the UDT name supplied is a
* fully-qualified name, the catalog and schemaPattern parameters are
* ignored.
*
* If a UDT does not have a direct super type, it is not listed here.
* A row of the ResultSet object returned by this method
* describes the designated UDT and a direct supertype. A row has the following
* columns:
*
* - TYPE_CAT String => the UDT's catalog (may be
null)
* - TYPE_SCHEM String => UDT's schema (may be
null)
* - TYPE_NAME String => type name of the UDT
*
- SUPERTYPE_CAT String => the direct super type's catalog
* (may be
null)
* - SUPERTYPE_SCHEM String => the direct super type's schema
* (may be
null)
* - SUPERTYPE_NAME String => the direct super type's name
*
*
* Note: If the driver does not support type hierarchies, an
* empty result set is returned.
*
* @param catalog a catalog name; "" retrieves those without a catalog;
* null means drop catalog name from the selection criteria
* @param schemaPattern a schema name pattern; "" retrieves those
* without a schema
* @param typeNamePattern a UDT name pattern; may be a fully-qualified
* name
* @return a ResultSet object in which a row gives information
* about the designated UDT
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
* @since 1.4
*/
@Override
public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the table hierarchies defined in a particular
* schema in this database.
*
*
Only supertable information for tables matching the catalog, schema
* and table name are returned. The table name parameter may be a fully-
* qualified name, in which case, the catalog and schemaPattern parameters
* are ignored. If a table does not have a super table, it is not listed here.
* Supertables have to be defined in the same catalog and schema as the
* sub tables. Therefore, the type description does not need to include
* this information for the supertable.
*
*
Each type description has the following columns:
*
* - TABLE_CAT String => the type's catalog (may be
null)
* - TABLE_SCHEM String => type's schema (may be
null)
* - TABLE_NAME String => type name
*
- SUPERTABLE_NAME String => the direct super type's name
*
*
* Note: If the driver does not support type hierarchies, an
* empty result set is returned.
*
* @param catalog a catalog name; "" retrieves those without a catalog;
* null means drop catalog name from the selection criteria
* @param schemaPattern a schema name pattern; "" retrieves those
* without a schema
* @param tableNamePattern a table name pattern; may be a fully-qualified
* name
* @return a ResultSet object in which each row is a type description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
* @since 1.4
*/
@Override
public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the given attribute of the given type
* for a user-defined type (UDT) that is available in the given schema
* and catalog.
*
* Descriptions are returned only for attributes of UDTs matching the
* catalog, schema, type, and attribute name criteria. They are ordered by
* TYPE_CAT, TYPE_SCHEM,
* TYPE_NAME and ORDINAL_POSITION. This description
* does not contain inherited attributes.
*
* The ResultSet object that is returned has the following
* columns:
*
* - TYPE_CAT String => type catalog (may be
null)
* - TYPE_SCHEM String => type schema (may be
null)
* - TYPE_NAME String => type name
*
- ATTR_NAME String => attribute name
*
- DATA_TYPE int => attribute type SQL type from java.sql.Types
*
- ATTR_TYPE_NAME String => Data source dependent type name.
* For a UDT, the type name is fully qualified. For a REF, the type name is
* fully qualified and represents the target type of the reference type.
*
- ATTR_SIZE int => column size. For char or date
* types this is the maximum number of characters; for numeric or
* decimal types this is precision.
*
- DECIMAL_DIGITS int => the number of fractional digits. Null is returned for data types where
* DECIMAL_DIGITS is not applicable.
*
- NUM_PREC_RADIX int => Radix (typically either 10 or 2)
*
- NULLABLE int => whether NULL is allowed
*
* - attributeNoNulls - might not allow NULL values
*
- attributeNullable - definitely allows NULL values
*
- attributeNullableUnknown - nullability unknown
*
* - REMARKS String => comment describing column (may be
null)
* - ATTR_DEF String => default value (may be
null)
* - SQL_DATA_TYPE int => unused
*
- SQL_DATETIME_SUB int => unused
*
- CHAR_OCTET_LENGTH int => for char types the
* maximum number of bytes in the column
*
- ORDINAL_POSITION int => index of the attribute in the UDT
* (starting at 1)
*
- IS_NULLABLE String => ISO rules are used to determine
* the nullability for a attribute.
*
* - YES --- if the attribute can include NULLs
*
- NO --- if the attribute cannot include NULLs
*
- empty string --- if the nullability for the
* attribute is unknown
*
* - SCOPE_CATALOG String => catalog of table that is the
* scope of a reference attribute (
null if DATA_TYPE isn't REF)
* - SCOPE_SCHEMA String => schema of table that is the
* scope of a reference attribute (
null if DATA_TYPE isn't REF)
* - SCOPE_TABLE String => table name that is the scope of a
* reference attribute (
null if the DATA_TYPE isn't REF)
* - SOURCE_DATA_TYPE short => source type of a distinct type or user-generated
* Ref type,SQL type from java.sql.Types (
null if DATA_TYPE
* isn't DISTINCT or user-generated REF)
*
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param typeNamePattern a type name pattern; must match the
* type name as it is stored in the database
* @param attributeNamePattern an attribute name pattern; must match the attribute
* name as it is declared in the database
* @return a ResultSet object in which each row is an
* attribute description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
* @since 1.4
*/
@Override
public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern, String attributeNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves whether this database supports the given result set holdability.
*
* @param holdability one of the following constants:
* ResultSet.HOLD_CURSORS_OVER_COMMIT or
* ResultSet.CLOSE_CURSORS_AT_COMMIT
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @see java.sql.Connection
* @since 1.4
*/
@Override
public boolean supportsResultSetHoldability(int holdability) throws SQLException
{
return false;
}
/**
* Retrieves this database's default holdability for ResultSet
* objects.
*
* @return the default holdability; either
* ResultSet.HOLD_CURSORS_OVER_COMMIT or
* ResultSet.CLOSE_CURSORS_AT_COMMIT
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public int getResultSetHoldability() throws SQLException
{
return ResultSet.HOLD_CURSORS_OVER_COMMIT;
}
/**
* Retrieves the major version number of the underlying database.
*
* @return the underlying database's major version
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public int getDatabaseMajorVersion() throws SQLException
{
return 1;
}
/**
* Retrieves the minor version number of the underlying database.
*
* @return underlying database's minor version
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public int getDatabaseMinorVersion() throws SQLException
{
return 1;
}
/**
* Retrieves the major JDBC version number for this
* driver.
*
* @return JDBC version major number
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public int getJDBCMajorVersion() throws SQLException
{
return 4;
}
/**
* Retrieves the minor JDBC version number for this
* driver.
*
* @return JDBC version minor number
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public int getJDBCMinorVersion() throws SQLException
{
return (Integer.parseInt(System.getProperty("java.specification.version").split("\\.")[1]) == 8) ? 2:1;
}
/**
* Indicates whether the SQLSTATE returned by SQLException.getSQLState
* is X/Open (now known as Open Group) SQL CLI or SQL:2003.
*
* @return the type of SQLSTATE; one of:
* sqlStateXOpen or
* sqlStateSQL
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public int getSQLStateType() throws SQLException
{
return sqlStateSQL;
}
/**
* Indicates whether updates made to a LOB are made on a copy or directly
* to the LOB.
*
* @return true if updates are made to a copy of the LOB;
* false if updates are made directly to the LOB
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public boolean locatorsUpdateCopy() throws SQLException
{
return false;
}
/**
* Retrieves whether this database supports statement pooling.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.4
*/
@Override
public boolean supportsStatementPooling() throws SQLException
{
return false;
}
/**
* Indicates whether or not this data source supports the SQL ROWID type,
* and if so the lifetime for which a RowId object remains valid.
*
* The returned int values have the following relationship:
*
* ROWID_UNSUPPORTED < ROWID_VALID_OTHER < ROWID_VALID_TRANSACTION
* < ROWID_VALID_SESSION < ROWID_VALID_FOREVER
*
* so conditional logic such as
*
* if (metadata.getRowIdLifetime() > DatabaseMetaData.ROWID_VALID_TRANSACTION)
*
* can be used. Valid Forever means valid across all Sessions, and valid for
* a Session means valid across all its contained Transactions.
*
* @return the status indicating the lifetime of a RowId
* @throws java.sql.SQLException if a database access error occurs
* @since 1.6
*/
@Override
public RowIdLifetime getRowIdLifetime() throws SQLException
{
return RowIdLifetime.ROWID_UNSUPPORTED;
}
/**
* Retrieves the schema names available in this database. The results
* are ordered by TABLE_CATALOG and
* TABLE_SCHEM.
*
* The schema columns are:
*
* - TABLE_SCHEM String => schema name
*
- TABLE_CATALOG String => catalog name (may be
null)
*
*
* @param catalog a catalog name; must match the catalog name as it is stored
* in the database;"" retrieves those without a catalog; null means catalog
* name should not be used to narrow down the search.
* @param schemaPattern a schema name; must match the schema name as it is
* stored in the database; null means
* schema name should not be used to narrow down the search.
* @return a ResultSet object in which each row is a
* schema description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
* @since 1.6
*/
@Override
public ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException
{
String sql = "select name as TABLE_SCHEM, 'Couchbase' as TABLE_CATALOG from system:namespaces";
if (schemaPattern != null)
{
sql += " where name like '" + schemaPattern +"'";
}
try( Statement statement = connection.createStatement())
{
return statement.executeQuery( sql );
}
}
/**
* Retrieves whether this database supports invoking user-defined or vendor functions
* using the stored procedure escape syntax.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.6
*/
@Override
public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException
{
return false;
}
/**
* Retrieves whether a SQLException while autoCommit is true inidcates
* that all open ResultSets are closed, even ones that are holdable. When a SQLException occurs while
* autocommit is true, it is vendor specific whether the JDBC driver responds with a commit operation, a
* rollback operation, or by doing neither a commit nor a rollback. A potential result of this difference
* is in whether or not holdable ResultSets are closed.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.6
*/
@Override
public boolean autoCommitFailureClosesAllResultSets() throws SQLException
{
return false;
}
/**
* Retrieves a list of the client info properties
* that the driver supports. The result set contains the following columns
*
*
* - NAME String=> The name of the client info property
* - MAX_LEN int=> The maximum length of the value for the property
* - DEFAULT_VALUE String=> The default value of the property
* - DESCRIPTION String=> A description of the property. This will typically
* contain information as to where this property is
* stored in the database.
*
*
* The ResultSet is sorted by the NAME column
*
*
* @return A ResultSet object; each row is a supported client info
* property
*
* @throws java.sql.SQLException if a database access error occurs
*
* @since 1.6
*/
@Override
public ResultSet getClientInfoProperties() throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the system and user functions available
* in the given catalog.
*
* Only system and user function descriptions matching the schema and
* function name criteria are returned. They are ordered by
* FUNCTION_CAT, FUNCTION_SCHEM,
* FUNCTION_NAME and
* SPECIFIC_ NAME.
*
* Each function description has the the following columns:
*
* - FUNCTION_CAT String => function catalog (may be
null)
* - FUNCTION_SCHEM String => function schema (may be
null)
* - FUNCTION_NAME String => function name. This is the name
* used to invoke the function
*
- REMARKS String => explanatory comment on the function
*
- FUNCTION_TYPE short => kind of function:
*
* - functionResultUnknown - Cannot determine if a return value
* or table will be returned
*
- functionNoTable- Does not return a table
*
- functionReturnsTable - Returns a table
*
* - SPECIFIC_NAME String => the name which uniquely identifies
* this function within its schema. This is a user specified, or DBMS
* generated, name that may be different then the
FUNCTION_NAME
* for example with overload functions
*
*
* A user may not have permission to execute any of the functions that are
* returned by getFunctions
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param functionNamePattern a function name pattern; must match the
* function name as it is stored in the database
* @return ResultSet - each row is a function description
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
* @since 1.6
*/
@Override
public ResultSet getFunctions(String catalog, String schemaPattern, String functionNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the given catalog's system or user
* function parameters and return type.
*
* Only descriptions matching the schema, function and
* parameter name criteria are returned. They are ordered by
* FUNCTION_CAT, FUNCTION_SCHEM,
* FUNCTION_NAME and
* SPECIFIC_ NAME. Within this, the return value,
* if any, is first. Next are the parameter descriptions in call
* order. The column descriptions follow in column number order.
*
*
Each row in the ResultSet
* is a parameter description, column description or
* return type description with the following fields:
*
* - FUNCTION_CAT String => function catalog (may be
null)
* - FUNCTION_SCHEM String => function schema (may be
null)
* - FUNCTION_NAME String => function name. This is the name
* used to invoke the function
*
- COLUMN_NAME String => column/parameter name
*
- COLUMN_TYPE Short => kind of column/parameter:
*
* - functionColumnUnknown - nobody knows
*
- functionColumnIn - IN parameter
*
- functionColumnInOut - INOUT parameter
*
- functionColumnOut - OUT parameter
*
- functionColumnReturn - function return value
*
- functionColumnResult - Indicates that the parameter or column
* is a column in the
ResultSet
*
* - DATA_TYPE int => SQL type from java.sql.Types
*
- TYPE_NAME String => SQL type name, for a UDT type the
* type name is fully qualified
*
- PRECISION int => precision
*
- LENGTH int => length in bytes of data
*
- SCALE short => scale - null is returned for data types where
* SCALE is not applicable.
*
- RADIX short => radix
*
- NULLABLE short => can it contain NULL.
*
* - functionNoNulls - does not allow NULL values
*
- functionNullable - allows NULL values
*
- functionNullableUnknown - nullability unknown
*
* - REMARKS String => comment describing column/parameter
*
- CHAR_OCTET_LENGTH int => the maximum length of binary
* and character based parameters or columns. For any other datatype the returned value
* is a NULL
*
- ORDINAL_POSITION int => the ordinal position, starting
* from 1, for the input and output parameters. A value of 0
* is returned if this row describes the function's return value.
* For result set columns, it is the
* ordinal position of the column in the result set starting from 1.
*
- IS_NULLABLE String => ISO rules are used to determine
* the nullability for a parameter or column.
*
* - YES --- if the parameter or column can include NULLs
*
- NO --- if the parameter or column cannot include NULLs
*
- empty string --- if the nullability for the
* parameter or column is unknown
*
* - SPECIFIC_NAME String => the name which uniquely identifies
* this function within its schema. This is a user specified, or DBMS
* generated, name that may be different then the
FUNCTION_NAME
* for example with overload functions
*
*
* The PRECISION column represents the specified column size for the given
* parameter or column.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. Null is returned for data types where the
* column size is not applicable.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param functionNamePattern a procedure name pattern; must match the
* function name as it is stored in the database
* @param columnNamePattern a parameter name pattern; must match the
* parameter or column name as it is stored in the database
* @return ResultSet - each row describes a
* user function parameter, column or return type
* @throws java.sql.SQLException if a database access error occurs
* @see #getSearchStringEscape
* @since 1.6
*/
@Override
public ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern, String columnNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves a description of the pseudo or hidden columns available
* in a given table within the specified catalog and schema.
* Pseudo or hidden columns may not always be stored within
* a table and are not visible in a ResultSet unless they are
* specified in the query's outermost SELECT list. Pseudo or hidden
* columns may not necessarily be able to be modified. If there are
* no pseudo or hidden columns, an empty ResultSet is returned.
*
*
Only column descriptions matching the catalog, schema, table
* and column name criteria are returned. They are ordered by
* TABLE_CAT,TABLE_SCHEM, TABLE_NAME
* and COLUMN_NAME.
*
*
Each column description has the following columns:
*
* - TABLE_CAT String => table catalog (may be
null)
* - TABLE_SCHEM String => table schema (may be
null)
* - TABLE_NAME String => table name
*
- COLUMN_NAME String => column name
*
- DATA_TYPE int => SQL type from java.sql.Types
*
- COLUMN_SIZE int => column size.
*
- DECIMAL_DIGITS int => the number of fractional digits. Null is returned for data types where
* DECIMAL_DIGITS is not applicable.
*
- NUM_PREC_RADIX int => Radix (typically either 10 or 2)
*
- COLUMN_USAGE String => The allowed usage for the column. The
* value returned will correspond to the enum name returned by {@link java.sql.PseudoColumnUsage#name PseudoColumnUsage.name()}
*
- REMARKS String => comment describing column (may be
null)
* - CHAR_OCTET_LENGTH int => for char types the
* maximum number of bytes in the column
*
- IS_NULLABLE String => ISO rules are used to determine the nullability for a column.
*
* - YES --- if the column can include NULLs
*
- NO --- if the column cannot include NULLs
*
- empty string --- if the nullability for the column is unknown
*
*
*
* The COLUMN_SIZE column specifies the column size for the given column.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. Null is returned for data types where the
* column size is not applicable.
*
* @param catalog a catalog name; must match the catalog name as it
* is stored in the database; "" retrieves those without a catalog;
* null means that the catalog name should not be used to narrow
* the search
* @param schemaPattern a schema name pattern; must match the schema name
* as it is stored in the database; "" retrieves those without a schema;
* null means that the schema name should not be used to narrow
* the search
* @param tableNamePattern a table name pattern; must match the
* table name as it is stored in the database
* @param columnNamePattern a column name pattern; must match the column
* name as it is stored in the database
* @return ResultSet - each row is a column description
* @throws java.sql.SQLException if a database access error occurs
* @see java.sql.PseudoColumnUsage
* @since 1.7
*/
@Override
public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException
{
return getEmptyResultSet();
}
/**
* Retrieves whether a generated key will always be returned if the column
* name(s) or index(es) specified for the auto generated key column(s)
* are valid and the statement succeeds. The key that is returned may or
* may not be based on the column(s) for the auto generated key.
* Consult your JDBC driver documentation for additional details.
*
* @return true if so; false otherwise
* @throws java.sql.SQLException if a database access error occurs
* @since 1.7
*/
@Override
public boolean generatedKeyAlwaysReturned() throws SQLException
{
return false;
}
/**
* Returns an object that implements the given interface to allow access to
* non-standard methods, or standard methods not exposed by the proxy.
*
* If the receiver implements the interface then the result is the receiver
* or a proxy for the receiver. If the receiver is a wrapper
* and the wrapped object implements the interface then the result is the
* wrapped object or a proxy for the wrapped object. Otherwise return the
* the result of calling unwrap recursively on the wrapped object
* or a proxy for that result. If the receiver is not a
* wrapper and does not implement the interface, then an SQLException is thrown.
*
* @param iface A Class defining an interface that the result must implement.
* @return an object that implements the interface. May be a proxy for the actual implementing object.
* @throws java.sql.SQLException If no object found that implements the interface
* @since 1.6
*/
@Override
public T unwrap(Class iface) throws SQLException
{
if (iface.isAssignableFrom(getClass()))
{
return iface.cast(this);
}
throw new SQLException("Cannot unwrap to " + iface.getName());
}
/**
* Returns true if this either implements the interface argument or is directly or indirectly a wrapper
* for an object that does. Returns false otherwise. If this implements the interface then return true,
* else if this is a wrapper then return the result of recursively calling isWrapperFor on the wrapped
* object. If this does not implement the interface and is not a wrapper, return false.
* This method should be implemented as a low-cost operation compared to unwrap so that
* callers can use this method to avoid expensive unwrap calls that may fail. If this method
* returns true then calling unwrap with the same argument should succeed.
*
* @param iface a Class defining an interface.
* @return true if this implements the interface or directly or indirectly wraps an object that does.
* @throws java.sql.SQLException if an error occurs while determining whether this is a wrapper
* for an object with the given interface.
* @since 1.6
*/
@Override
public boolean isWrapperFor(Class iface) throws SQLException
{
return iface.isAssignableFrom(getClass());
}
private ResultSet getEmptyResultSet()
{
List types = new ArrayList();
Map signature = new HashMap();
CouchMetrics metrics = new CouchMetrics();
metrics.setResultCount(types.size());
// this just has to be not 0
metrics.setResultSize(2);
CouchResponse couchResponse = new CouchResponse();
couchResponse.setResults(types);
couchResponse.setMetrics(metrics);
//noinspection unchecked
couchResponse.setSignature(signature);
return new CBResultSet(null, couchResponse);
}
}