org.apache.cayenne.dba.postgres
Class PostgresQualifierTranslator

java.lang.Object
  org.apache.cayenne.access.trans.QueryAssemblerHelper
      org.apache.cayenne.access.trans.QualifierTranslator
          org.apache.cayenne.access.trans.TrimmingQualifierTranslator
              org.apache.cayenne.dba.postgres.PostgresQualifierTranslator

All Implemented Interfaces:

TraversalHandler

public class PostgresQualifierTranslator
extends TrimmingQualifierTranslator

Uses Postgres extensions to optimize various translations.

Since:

1.1

Author:

Andrei Adamchik

Field Summary

Fields inherited from class org.apache.cayenne.access.trans.TrimmingQualifierTranslator

trimFunction

Fields inherited from class org.apache.cayenne.access.trans.QualifierTranslator

matchingObject, objectMatchTranslator, qualBuf, translateParentQual

Fields inherited from class org.apache.cayenne.access.trans.QueryAssemblerHelper

queryAssembler

Constructor Summary

PostgresQualifierTranslator(QueryAssembler queryAssembler)

Method Summary

void	endNode(Expression node, Expression parentNode) Called during the traversal after an expression node children processing is finished.
void	finishedChild(Expression node, int childIndex, boolean hasMoreChildren) Opportunity to insert an operation
void	startNode(Expression node, Expression parentNode) Called during the traversal before an expression node children processing is started.

Methods inherited from class org.apache.cayenne.access.trans.TrimmingQualifierTranslator

getTrimFunction, processColumn, processColumn, setTrimFunction

Methods inherited from class org.apache.cayenne.access.trans.QualifierTranslator

appendLiteral, appendObjectMatch, detectObjectMatch, doTranslation, extractQualifier, getObjEntity, isTranslateParentQual, objectNode, parenthesisNeeded, processRelTermination, setTranslateParentQual

Methods inherited from class org.apache.cayenne.access.trans.QueryAssemblerHelper

appendDbPath, appendLiteralDirect, appendObjPath, getDbEntity, getQueryAssembler, paramsDbType, processColumn, processRelTermination, setQueryAssembler

Methods inherited from class java.lang.Object

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

Constructor Detail

PostgresQualifierTranslator

public PostgresQualifierTranslator(QueryAssembler queryAssembler)

Method Detail

startNode

public void startNode(Expression node,
                      Expression parentNode)

Description copied from interface: TraversalHandler

Called during the traversal before an expression node children processing is started.

Specified by:

startNode in interface TraversalHandler

Overrides:

startNode in class QualifierTranslator

endNode

public void endNode(Expression node,
                    Expression parentNode)

Description copied from interface: TraversalHandler

Called during the traversal after an expression node children processing is finished.

Specified by:

endNode in interface TraversalHandler

Overrides:

endNode in class QualifierTranslator

finishedChild

public void finishedChild(Expression node,
                          int childIndex,
                          boolean hasMoreChildren)

Description copied from class: QualifierTranslator

Opportunity to insert an operation

Specified by:

finishedChild in interface TraversalHandler

Overrides:

finishedChild in class QualifierTranslator