org.databene.benerator.engine.expression
Class CachedExpression<E>

java.lang.Object
  org.databene.commons.expression.ExpressionAdapter<E,E>
      org.databene.commons.expression.ExpressionProxy<E>
          org.databene.benerator.engine.expression.CachedExpression<E>

All Implemented Interfaces:

org.databene.commons.Expression<E>

public class CachedExpression<E>
extends org.databene.commons.expression.ExpressionProxy<E>

Caches the result of another expression and returns it on subsequent calls without evaluating the other expression again. The cache can be invalidated by calling the invalidate() method.

Created: 21.10.2009 14:42:15

Since:

0.6.0

Author:

Volker Bergmann

Field Summary

Fields inherited from class org.databene.commons.expression.ExpressionAdapter

source

Constructor Summary

CachedExpression(org.databene.commons.Expression<E> realExpression)

Method Summary

E	evaluate(org.databene.commons.Context context)
void	invalidate()

Methods inherited from class org.databene.commons.expression.ExpressionAdapter

isConstant

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedExpression

public CachedExpression(org.databene.commons.Expression<E> realExpression)

Method Detail

evaluate

public E evaluate(org.databene.commons.Context context)

Specified by:

evaluate in interface org.databene.commons.Expression<E>

Overrides:

evaluate in class org.databene.commons.expression.ExpressionProxy<E>

invalidate

public void invalidate()