org.apache.openjpa.kernel.exps
Class AbstractExpressionVisitor

java.lang.Object
  extended by org.apache.openjpa.kernel.exps.AbstractExpressionVisitor
All Implemented Interfaces:
ExpressionVisitor
Direct Known Subclasses:
HasContainsExpressionVisitor

public abstract class AbstractExpressionVisitor
extends Object
implements ExpressionVisitor

No-op abstract visitor meant for easy extension.

Author:
Abe White

Constructor Summary
AbstractExpressionVisitor()
           
 
Method Summary
 void enter(Expression exp)
          Enter an expression.
 void enter(Value val)
          Enter a value.
 void exit(Expression exp)
          Leave an expression.
 void exit(Value val)
          Leave a value.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AbstractExpressionVisitor

public AbstractExpressionVisitor()
Method Detail

enter

public void enter(Expression exp)
Description copied from interface: ExpressionVisitor
Enter an expression. The expression will then invoke visits on its components.

Specified by:
enter in interface ExpressionVisitor

exit

public void exit(Expression exp)
Description copied from interface: ExpressionVisitor
Leave an expression.

Specified by:
exit in interface ExpressionVisitor

enter

public void enter(Value val)
Description copied from interface: ExpressionVisitor
Enter a value. The value will then invoke visits on its components.

Specified by:
enter in interface ExpressionVisitor

exit

public void exit(Value val)
Description copied from interface: ExpressionVisitor
Leave a value.

Specified by:
exit in interface ExpressionVisitor


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