/* AbstractEvalRef.java
Purpose:
Description:
History:
Tue Sep 4 13:03:22 2007, Created by tomyeh
Copyright (C) 2007 Potix Corporation. All Rights Reserved.
{{IS_RIGHT
This program is distributed under LGPL Version 2.1 in the hope that
it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.zk.ui.metainfo;
import org.zkoss.xel.Expression;
import org.zkoss.xel.XelException;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.Page;
import org.zkoss.zk.xel.EvaluatorRef;
/**
* A skeletal implementation for {@link EvaluatorRef}.
* @author tomyeh
* @since 3.0.0
*/
abstract /*package*/ class AbstractEvalRef implements EvaluatorRef {
//EvaluatorRef//
public PageDefinition getPageDefinition() {
return null;
}
//Evaluator//
public Expression parseExpression(String expression, Class<?> expectedType) throws XelException {
return getEvaluator().parseExpression(expression, expectedType);
}
public Object evaluate(Page page, Expression expression) throws XelException {
return getEvaluator().evaluate(page, expression);
}
public Object evaluate(Component comp, Expression expression) throws XelException {
return getEvaluator().evaluate(comp, expression);
}
}