001 package org.apache.fulcrum.intake.validator; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022 /** 023 * A constraint has a name and a value and an optional message. 024 * The name/value pair will have meaning to a Validator and the 025 * message will serve as an error message in the event the Validator 026 * determines the constraint is violated. 027 * example: 028 * name="maxLength" 029 * value="255" 030 * message="Value cannot be longer than 255 characters." 031 * 032 * @author <a href="mailto:jmcnally@collab.net">John McNally</a> 033 * @version $Id: Constraint.java 535465 2007-05-05 06:58:06Z tv $ 034 */ 035 public interface Constraint 036 { 037 /** 038 * Get the name of the constraint. 039 */ 040 String getName(); 041 042 /** 043 * Get the value of the constraint. 044 */ 045 String getValue(); 046 047 /** 048 * Get the error message. 049 */ 050 String getMessage(); 051 }