001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *  http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package javax.mail.search;
021    
022    import javax.mail.Message;
023    
024    /**
025     * Term that implements a logical negation.
026     *
027     * @version $Rev: 467553 $ $Date: 2006-10-25 00:01:51 -0400 (Wed, 25 Oct 2006) $
028     */
029    public final class NotTerm extends SearchTerm {
030        protected SearchTerm term;
031    
032        public NotTerm(SearchTerm term) {
033            this.term = term;
034        }
035    
036        public SearchTerm getTerm() {
037            return term;
038        }
039    
040        public boolean match(Message message) {
041            return !term.match(message);
042        }
043    
044        public boolean equals(Object other) {
045            if (other == this) return true;
046            if (other instanceof NotTerm == false) return false;
047            return term.equals(((NotTerm) other).term);
048        }
049    
050        public int hashCode() {
051            return term.hashCode();
052        }
053    }