org.apache.openjpa.persistence.criteria

Class CriteriaExpressionVisitor.AbstractVisitor

java.lang.Object

org.apache.openjpa.persistence.criteria.CriteriaExpressionVisitor.AbstractVisitor

All Implemented Interfaces:

CriteriaExpressionVisitor

Direct Known Subclasses:

CriteriaExpressionVisitor.ParameterVisitor

Enclosing interface:

CriteriaExpressionVisitor

public abstract static class CriteriaExpressionVisitor.AbstractVisitor
extends Object
implements CriteriaExpressionVisitor

An abstract implementation that can detect cycles during traversal.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.openjpa.persistence.criteria.CriteriaExpressionVisitor

CriteriaExpressionVisitor.AbstractVisitor, CriteriaExpressionVisitor.ParameterVisitor, CriteriaExpressionVisitor.TraversalStyle

Field Summary

Fields

Modifier and Type	Field and Description
protected Set<org.apache.openjpa.persistence.criteria.CriteriaExpression>	_visited

Constructor Summary

Constructors

Constructor and Description
AbstractVisitor()

Method Summary

Modifier and Type	Method and Description
void	exit(org.apache.openjpa.persistence.criteria.CriteriaExpression node) Remembers the node being visited.
CriteriaExpressionVisitor.TraversalStyle	getTraversalStyle(org.apache.openjpa.persistence.criteria.CriteriaExpression node) Returns PREFIX as the default traversal style.
boolean	isVisited(org.apache.openjpa.persistence.criteria.CriteriaExpression node) Affirms if this node has been visited before.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.persistence.criteria.CriteriaExpressionVisitor

enter

Field Detail

_visited

protected final Set<org.apache.openjpa.persistence.criteria.CriteriaExpression> _visited

Constructor Detail

AbstractVisitor

public AbstractVisitor()

Method Detail

exit

public void exit(org.apache.openjpa.persistence.criteria.CriteriaExpression node)

Remembers the node being visited.

Specified by:

exit in interface CriteriaExpressionVisitor

isVisited

public boolean isVisited(org.apache.openjpa.persistence.criteria.CriteriaExpression node)

Affirms if this node has been visited before.

Specified by:

isVisited in interface CriteriaExpressionVisitor

getTraversalStyle

public CriteriaExpressionVisitor.TraversalStyle getTraversalStyle(org.apache.openjpa.persistence.criteria.CriteriaExpression node)

Returns PREFIX as the default traversal style.

Specified by:

getTraversalStyle in interface CriteriaExpressionVisitor