001    /*
002     * Copyright 2010 the original author or authors.
003     * 
004     *  Licensed under the Apache License, Version 2.0 (the "License");
005     *  you may not use this file except in compliance with the License.
006     *  You may obtain a copy of the License at
007     *
008     *      http://www.apache.org/licenses/LICENSE-2.0
009     *
010     *  Unless required by applicable law or agreed to in writing, software
011     *  distributed under the License is distributed on an "AS IS" BASIS,
012     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     *  See the License for the specific language governing permissions and
014     *  limitations under the License.
015     */
016    package com.hs.mail.imap.message.search;
017    
018    /**
019     * This class implements search-criteria for Strings.
020     * 
021     * @author Won Chul Doh
022     * @since Jan 30, 2010
023     * 
024     */
025    public abstract class StringKey extends SearchKey {
026    
027            /**
028             * The pattern.
029             */
030        protected String pattern;
031        
032        /**
033         * Ignore case when comparing?
034         */
035        protected boolean ignoreCase;
036    
037        protected StringKey(String pattern) {
038                    this.pattern = pattern;
039                    ignoreCase = true;
040            }
041    
042        protected StringKey(String pattern, boolean ignoreCase) {
043                    this.pattern = pattern;
044                    this.ignoreCase = ignoreCase;
045            }
046    
047            public String getPattern() {
048                    return pattern;
049            }
050    
051            public boolean getIgnoreCase() {
052                    return ignoreCase;
053            }
054     
055        public boolean equals(Object obj) {
056                    if (!(obj instanceof StringKey))
057                            return false;
058                    StringKey sk = (StringKey) obj;
059                    if (ignoreCase)
060                            return sk.pattern.equalsIgnoreCase(this.pattern)
061                                            && sk.ignoreCase == this.ignoreCase;
062                    else
063                            return sk.pattern.equals(this.pattern)
064                                            && sk.ignoreCase == this.ignoreCase;
065            }
066            
067        public int hashCode() {
068                    return ignoreCase ? pattern.hashCode() : ~pattern.hashCode();
069            }
070            
071    }