org.apache.openjpa.kernel.exps
Class AbstractExpressionVisitor

java.lang.Object
  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