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

java.lang.Object
  extended by 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
protected  Set<org.apache.openjpa.persistence.criteria.CriteriaExpression> _visited
           
 
Constructor Summary
CriteriaExpressionVisitor.AbstractVisitor()
           
 
Method Summary
 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

CriteriaExpressionVisitor.AbstractVisitor

public CriteriaExpressionVisitor.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


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