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

java.lang.Object
  extended by org.castor.cpa.persistence.sql.driver.JDBCQueryExpression
      extended by 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: 8994 $ $Date: 2011-08-02 01:40:59 +0200 (Di, 02 Aug 2011) $
Author:
Assaf Arkin

Nested Class Summary
 
Nested classes/interfaces inherited from class org.castor.cpa.persistence.sql.driver.JDBCQueryExpression
JDBCQueryExpression.Join
 
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
PostgreSQLQueryExpression(PersistenceFactory factory)
           
 
Method Summary
 java.lang.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 java.lang.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()


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