Java tutorial
/** * Licensed to Apereo under one or more contributor license * agreements. See the NOTICE file distributed with this work * for additional information regarding copyright ownership. * Apereo licenses this file to you 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 the following location: * * 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 edu.wisc.my.portlets.bookmarks.domain.validation; import org.springframework.validation.Errors; import org.springframework.validation.ValidationUtils; import org.springframework.validation.Validator; import edu.wisc.my.portlets.bookmarks.domain.Entry; /** * Validates an entry, requires a non null/empty name. * * @author Eric Dalquist <a href="mailto:eric.dalquist@doit.wisc.edu">eric.dalquist@doit.wisc.edu</a> * @version $Revision: 12165 $ */ public class EntryValidator implements Validator { /** * @see org.springframework.validation.Validator#supports(java.lang.Class) */ public boolean supports(Class clazz) { return Entry.class.isAssignableFrom(clazz); } /** * @see org.springframework.validation.Validator#validate(java.lang.Object, org.springframework.validation.Errors) */ public void validate(Object obj, Errors errors) { final Entry entry = (Entry) obj; this.validateName(entry, errors); } private void validateName(Entry entry, Errors errors) { ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", "portlet.entry.error.name.required"); } }