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* <td class='confluenceTd'>yes * <td class='confluenceTd'>  * <td class='confluenceTd'> * </tr> * </table> * <!-- END SNIPPET: parameters --> * * <p/> Example code: * * <u>An Annotated Interface * <pre> * <!-- START SNIPPET: example --> * @Validation() * public interface AnnotationDataAware { * * void setBarObj(Bar b); * * Bar getBarObj(); * * @RequiredFieldValidator(message = "You must enter a value for data.") * @RequiredStringValidator(message = "You must enter a value for data.") * void setData(String data); * * String getData(); * } * <!-- END SNIPPET: example --> * </pre> * * <p/> Example code: * * <u>An Annotated Class * <pre> * <!-- START SNIPPET: example2 --> * @Validation() * public class SimpleAnnotationAction extends ActionSupport { * * @RequiredFieldValidator(type = ValidatorType.FIELD, message = "You must enter a value for bar.") * @IntRangeFieldValidator(type = ValidatorType.FIELD, min = "6", max = "10", message = "bar must be between ${min} and ${max}, current value is ${bar}.") * public void setBar(int bar) { * this.bar = bar; * } * * public int getBar() { * return bar; * } * * @Validations( * requiredFields = * {@RequiredFieldValidator(type = ValidatorType.SIMPLE, fieldName = "customfield", message = "You must enter a value for field.")}, * requiredStrings = * {@RequiredStringValidator(type = ValidatorType.SIMPLE, fieldName = "stringisrequired", message = "You must enter a value for string.")}, * emails = * { @EmailValidator(type = ValidatorType.SIMPLE, fieldName = "emailaddress", message = "You must enter a value for email.")}, * urls = * { @UrlValidator(type = ValidatorType.SIMPLE, fieldName = "hreflocation", message = "You must enter a value for email.")}, * stringLengthFields = * {@StringLengthFieldValidator(type = ValidatorType.SIMPLE, trim = true, minLength="10" , maxLength = "12", fieldName = "needstringlength", message = "You must enter a stringlength.")}, * intRangeFields = * { @IntRangeFieldValidator(type = ValidatorType.SIMPLE, fieldName = "intfield", min = "6", max = "10", message = "bar must be between ${min} and ${max}, current value is ${bar}.")}, * dateRangeFields = * {@DateRangeFieldValidator(type = ValidatorType.SIMPLE, fieldName = "datefield", min = "-1", max = "99", message = "bar must be between ${min} and ${max}, current value is ${bar}.")}, * expressions = { * @ExpressionValidator(expression = "foo > 1", message = "Foo must be greater than Bar 1. Foo = ${foo}, Bar = ${bar}."), * @ExpressionValidator(expression = "foo > 2", message = "Foo must be greater than Bar 2. Foo = ${foo}, Bar = ${bar}."), * @ExpressionValidator(expression = "foo > 3", message = "Foo must be greater than Bar 3. Foo = ${foo}, Bar = ${bar}."), * @ExpressionValidator(expression = "foo > 4", message = "Foo must be greater than Bar 4. Foo = ${foo}, Bar = ${bar}."), * @ExpressionValidator(expression = "foo > 5", message = "Foo must be greater than Bar 5. Foo = ${foo}, Bar = ${bar}.") * } * ) * public String execute() throws Exception { * return SUCCESS; * } * } * * <!-- END SNIPPET: example2 --> * </pre> * * @author Rainer Hermanns * @deprecated Since Struts 2.1 because it isn't necessary anymore * @version $Id: Validation.java 894090 2009-12-27 18:18:29Z martinc $ */ @Target({ElementType.TYPE}) @Retention(RetentionPolicy.RUNTIME) public @interface Validation { /** * Used for class or interface validation rules. */ Validations[] validations() default {}; }

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Struts example source code file (Validation.java)

This example Struts source code file (Validation.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, target, target, validation, validation, validations, validations

The Struts Validation.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 annotation has been deprecated since 2.1 as its previous purpose, to define classes that support annotation validations,
 * is no longer necessary.
 * <!-- END SNIPPET: description -->
 *
 * <p/> Annotation usage:
 *
 * <!-- START SNIPPET: usage -->
 *  <p/>The Validation annotation must be applied at Type 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'>validations
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