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* <td class='confluenceTd'>yes * <td class='confluenceTd'>  * <td class='confluenceTd'>field error message * </tr> * <tr> * <td class='confluenceTd'>key * <td class='confluenceTd'>no * <td class='confluenceTd'>  * <td class='confluenceTd'>i18n key from language specific properties file. * </tr> * <tr> * <td class='confluenceTd'>fieldName * <td class='confluenceTd'>no * <td class='confluenceTd'>  * <td class='confluenceTd'>  * </tr> * <tr> * <td class='confluenceTd'>shortCircuit * <td class='confluenceTd'>no * <td class='confluenceTd'>false * <td class='confluenceTd'>If this validator should be used as shortCircuit. * </tr> * <tr> * <td class='confluenceTd'> expression * <td class='confluenceTd'> yes * <td class='confluenceTd'>  * <td class='confluenceTd'> An OGNL expression that returns a boolean value. * </tr> * </table> * <!-- END SNIPPET: parameters --> * * <p/> Example code: * * <pre> * <!-- START SNIPPET: example --> * @FieldExpressionValidator(message = "Default message", key = "i18n.key", shortCircuit = true, expression = "an OGNL expression") * <!-- END SNIPPET: example --> * </pre> * * @author Rainer Hermanns * @version $Id: FieldExpressionValidator.java 894090 2009-12-27 18:18:29Z martinc $ */ @Target({ElementType.METHOD}) @Retention(RetentionPolicy.RUNTIME) public @interface FieldExpressionValidator { /** * An OGNL expression that returns a boolean value. */ String expression(); /** * The default error message for this validator. * NOTE: It is required to set a message, if you are not using the message key for 18n lookup! */ String message() default ""; /** * The message key to lookup for i18n. */ String key() default ""; /** * The optional fieldName for SIMPLE validator types. */ String fieldName() default ""; /** * If this is activated, the validator will be used as short-circuit. * * Adds the short-circuit="true" attribute value if <tt>true. * */ boolean shortCircuit() default false; }

Other Struts examples (source code examples)

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

Struts example source code file (FieldExpressionValidator.java)

This example Struts source code file (FieldExpressionValidator.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 - Struts tags/keywords

annotation, fieldexpressionvalidator, fieldexpressionvalidator, string, string, target, target

The Struts FieldExpressionValidator.java source code

/*
 * Copyright 2002-2006,2009 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.
 */

package com.opensymphony.xwork2.validator.annotations;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * <!-- START SNIPPET: description -->
 * This validator uses an OGNL expression to perform its validator.
 * The error message will be added to the field if the expression returns
 * false when it is evaluated against the value stack.
 * <!-- END SNIPPET: description -->
 *
 * <p/> Annotation usage:
 *
 * <!-- START SNIPPET: usage -->
 * <p/>The annotation must be applied at method level.
 * <!-- END SNIPPET: usage -->
 *
 * <p/> Annotation parameters:
 *
 * <!-- START SNIPPET: parameters -->
 * <table class='confluenceTable'>
 * <tr>
 * <th class='confluenceTh'> Parameter 
 * <th class='confluenceTh'> Required 
 * <th class='confluenceTh'> Default 
 * <th class='confluenceTh'> Notes 
 * </tr>
 * <tr>
 * <td class='confluenceTd'>message
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