alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Jetty example source code file (Expression.java)

This example Jetty source code file (Expression.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Jetty tags/keywords

elexception, elexception, expression, expression, object, object, variableresolver, variableresolver

The Jetty Expression.java source code

/**
 *
 * Copyright 2003-2004 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

//
// This source code implements specifications defined by the Java
// Community Process. In order to remain compliant with the specification
// DO NOT add / change / or delete method signatures!
//

package javax.servlet.jsp.el;


/**
 * <p>The abstract class for a prepared expression.

* * <p>An instance of an Expression can be obtained via from an * ExpressionEvaluator instance.</p> * * <p>An Expression may or not have done a syntactic parse of the expression. * A client invoking the evaluate() method should be ready for the case * where ELParseException exceptions are raised. </p> * * @since 2.0 */ public abstract class Expression { /** * Evaluates an expression that was previously prepared. In some * implementations preparing an expression involves full syntactic * validation, but others may not do so. Evaluating the expression may * raise an ELParseException as well as other ELExceptions due to * run-time evaluation. * * @param vResolver A VariableResolver instance that can be used at * runtime to resolve the name of implicit objects into Objects. * @return The result of the expression evaluation. * * @exception ELException Thrown if the expression evaluation failed. */ public abstract Object evaluate( VariableResolver vResolver ) throws ELException; }

Other Jetty examples (source code examples)

Here is a short list of links related to this Jetty Expression.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.