org.castor.cpa.persistence.sql.driver

Class PostgreSQLQueryExpression

java.lang.Object

org.castor.cpa.persistence.sql.driver.JDBCQueryExpression

org.castor.cpa.persistence.sql.driver.PostgreSQLQueryExpression

All Implemented Interfaces:

QueryExpression

public final class PostgreSQLQueryExpression
extends JDBCQueryExpression

QueryExpression for PostgreSQL 6.5/7.

Version:

$Revision: 7585 $ $Date: 2004-10-01 13:45:49 -0600 (Fri, 01 Oct 2004) $

Author:

Assaf Arkin

Field Summary

Fields inherited from class org.castor.cpa.persistence.sql.driver.JDBCQueryExpression

_dbInfo, _distinct, _factory, _joins, _limit, _offset, _order, _select, _tables

Fields inherited from interface org.exolab.castor.persist.spi.QueryExpression

OP_BETWEEN, OP_BETWEEN_AND, OP_EQUALS, OP_GREATER, OP_GREATER_EQUALS, OP_LESS, OP_LESS_EQUALS, OP_LIKE, OP_NOT_EQUALS, OP_NOT_LIKE

Constructor Summary

Constructors

Constructor and Description
PostgreSQLQueryExpression(PersistenceFactory factory)

Method Summary

Methods

Modifier and Type	Method and Description
String	getStatement(boolean lock) Creates a SQL statement.
boolean	isLimitClauseSupported() Provides an implementation of QueryExpression#isLimitClauseSupported().
boolean	isOffsetClauseSupported() Provides an implementation of QueryExpression#isOffsetClauseSupported().

Methods inherited from class org.castor.cpa.persistence.sql.driver.JDBCQueryExpression

addColumn, addCondition, addInnerJoin, addLimitClause, addOffsetClause, addOrderClause, addOuterJoin, addParameter, addSelect, addTable, addWhereClause, addWhereClause, clone, encodeColumn, getColumnList, getStandardStatement, setDbMetaInfo, setDistinct, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PostgreSQLQueryExpression

public PostgreSQLQueryExpression(PersistenceFactory factory)

Method Detail

getStatement

public String getStatement(boolean lock)

Description copied from class: JDBCQueryExpression

Creates a SQL statement. In general, for a RDBMS/JDBC driver with a full support of the SQL standard/JDBC specification, this will return a valid SQL statement. For some features, a particular RDBMS might indicate that it does not support this feature by throwing a SyntaxNotSupportedException.

Specified by:

getStatement in interface QueryExpression

Overrides:

getStatement in class JDBCQueryExpression

Parameters:

lock - True if a write lock is required

Returns:

The SQL statement

isLimitClauseSupported

public boolean isLimitClauseSupported()

Provides an implementation of QueryExpression#isLimitClauseSupported().

Specified by:

isLimitClauseSupported in interface QueryExpression

Overrides:

isLimitClauseSupported in class JDBCQueryExpression

Returns:

true to indicate that this feature is supported by postgreSQL.

See Also:

QueryExpression.isLimitClauseSupported()

isOffsetClauseSupported

public boolean isOffsetClauseSupported()

Provides an implementation of QueryExpression#isOffsetClauseSupported().

Specified by:

isOffsetClauseSupported in interface QueryExpression

Overrides:

isOffsetClauseSupported in class JDBCQueryExpression

Returns:

true to indicate that this feature is supported by postgreSQL.

See Also:

QueryExpression.isOffsetClauseSupported()