Package org.zkoss.zkmax.xel.el

Class ApacheELFactory

java.lang.Object

org.zkoss.zkmax.xel.el.ApacheELFactory

All Implemented Interfaces:

org.zkoss.xel.ExpressionFactory

public class ApacheELFactory
extends Object
implements org.zkoss.xel.ExpressionFactory

An implementation that is based on Apache commons-el: org.apache.commons.el.ExpressionEvaluatorImpl.

Available in ZK EE

The org.zkoss.xel.el.ELFactory class is recommended since the implementation it encapsulates has the better performance.

Since:

3.0.0

Author:

tomyeh

Field Summary

Fields inherited from interface org.zkoss.xel.ExpressionFactory

FEATURE_CLASS, FEATURE_FUNCTION

Constructor Summary

Constructors

Constructor	Description
ApacheELFactory()

Method Summary

Modifier and Type	Method	Description
Object	evaluate(org.zkoss.xel.XelContext xelc, String expression, Class expectedType)
boolean	isSupported(int feature)
protected jakarta.servlet.jsp.el.ExpressionEvaluator	newExpressionEvaluator()	Returns the EL expression factory.
org.zkoss.xel.Expression	parseExpression(org.zkoss.xel.XelContext xelc, String expression, Class expectedType)

Methods inherited from class java.lang.Object

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

Constructor Details

ApacheELFactory

public ApacheELFactory()

Method Details

isSupported

public boolean isSupported(int feature)

Specified by:

isSupported in interface org.zkoss.xel.ExpressionFactory

parseExpression

public org.zkoss.xel.Expression parseExpression(org.zkoss.xel.XelContext xelc,
 String expression,
 Class expectedType)
                                         throws org.zkoss.xel.XelException

Specified by:

parseExpression in interface org.zkoss.xel.ExpressionFactory

Throws:

org.zkoss.xel.XelException

evaluate

public Object evaluate(org.zkoss.xel.XelContext xelc,
 String expression,
 Class expectedType)
                throws org.zkoss.xel.XelException

Specified by:

evaluate in interface org.zkoss.xel.ExpressionFactory

Throws:

org.zkoss.xel.XelException

newExpressionEvaluator

protected jakarta.servlet.jsp.el.ExpressionEvaluator newExpressionEvaluator()

Returns the EL expression factory.

Default: Use a subclass of org.apache.commons.el.ExpressionEvaluatorImpl that also reads a property of an object whose class is in a package its module does not export, such as sun.util.calendar.ZoneInfo, through the same getter declared by a public supertype in an exported package.

You might override it to use a different implementation.