org.zkoss.el
Class EvaluatorImpl

java.lang.Object
  org.zkoss.xel.ExpressionEvaluator
      org.zkoss.el.EvaluatorImpl

public class EvaluatorImpl
extends ExpressionEvaluator

The evaluator that implements ExpressionEvaluator. It encapsulates the expression evaluator come with the container.

To make it work, you have to specify the system property, "org.zkoss.xel.ExpressionEvaluator.class", with the proper class name. If you don't specify one, org.zkforge.apache.commons.el.ExpressionEvaluatorImpl (of zcommons-el) is assumed.

Author:

tomyeh

Constructor Summary

EvaluatorImpl()

Method Summary

java.lang.Object	evaluate(java.lang.String expression, java.lang.Class expectedType, VariableResolver vResolver, FunctionMapper fMapper) Evaluates an expression.
Expression	parseExpression(java.lang.String expression, java.lang.Class expectedType, FunctionMapper fMapper) Prepare an expression for later evaluation.

Methods inherited from class java.lang.Object

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

Constructor Detail

EvaluatorImpl

public EvaluatorImpl()

Method Detail

parseExpression

public Expression parseExpression(java.lang.String expression,
                                  java.lang.Class expectedType,
                                  FunctionMapper fMapper)
                           throws XelException

Description copied from class: ExpressionEvaluator

Prepare an expression for later evaluation.

Specified by:

parseExpression in class ExpressionEvaluator

Throws:

XelException

evaluate

public java.lang.Object evaluate(java.lang.String expression,
                                 java.lang.Class expectedType,
                                 VariableResolver vResolver,
                                 FunctionMapper fMapper)
                          throws XelException

Description copied from class: ExpressionEvaluator

Evaluates an expression.

Specified by:

evaluate in class ExpressionEvaluator

Throws:

XelException