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 org.apache.james.mime4j.stream;
021    
022    import org.apache.james.mime4j.util.LangUtils;
023    
024    /**
025     * A name / value tuple
026     */
027    public final class NameValuePair {
028    
029        private final String name;
030        private final String value;
031    
032        public NameValuePair(final String name, final String value) {
033            super();
034            if (name == null) {
035                throw new IllegalArgumentException("Name may not be null");
036            }
037            this.name = name;
038            this.value = value;
039        }
040    
041        public String getName() {
042            return this.name;
043        }
044    
045        public String getValue() {
046            return this.value;
047        }
048    
049        public String toString() {
050            if (this.value == null) {
051                return name;
052            } else {
053                StringBuilder buffer = new StringBuilder();
054                buffer.append(this.name);
055                buffer.append("=");
056                buffer.append("\"");
057                buffer.append(this.value);
058                buffer.append("\"");
059                return buffer.toString();
060            }
061        }
062    
063        public boolean equals(final Object object) {
064            if (this == object) return true;
065            if (object instanceof NameValuePair) {
066                NameValuePair that = (NameValuePair) object;
067                return this.name.equals(that.name)
068                      && LangUtils.equals(this.value, that.value);
069            } else {
070                return false;
071            }
072        }
073    
074        public int hashCode() {
075            int hash = LangUtils.HASH_SEED;
076            hash = LangUtils.hashCode(hash, this.name);
077            hash = LangUtils.hashCode(hash, this.value);
078            return hash;
079        }
080    
081    }