001    /*
002     * Created on Dec 21, 2010
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
005     * the License. You may obtain a copy of the License at
006     *
007     * http://www.apache.org/licenses/LICENSE-2.0
008     *
009     * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
010     * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
011     * specific language governing permissions and limitations under the License.
012     *
013     * Copyright @2010-2011 the original author or authors.
014     */
015    package org.fest.assertions.data;
016    
017    import static org.fest.util.Objects.*;
018    import static org.fest.util.Strings.quote;
019    
020    import java.util.Map;
021    
022    /**
023     * Understands an entry in a <code>{@link Map}</code>.
024     *
025     * @author Yvonne Wang
026     */
027    public class MapEntry {
028    
029      /** The key corresponding to this entry. */
030      public final Object key;
031    
032      /** The value corresponding to this entry. */
033      public final Object value;
034    
035      /**
036       * Creates a new map entry.
037       * @param key the key of the entry to create.
038       * @param value the value of the entry to create.
039       * @return the created map entry.
040       */
041      public static MapEntry entry(Object key, Object value) {
042        return new MapEntry(key, value);
043      }
044    
045      private MapEntry(Object key, Object value) {
046        this.key = key;
047        this.value = value;
048      }
049    
050      @Override public boolean equals(Object obj) {
051        if (this == obj) return true;
052        if (obj == null) return false;
053        if (getClass() != obj.getClass()) return false;
054        MapEntry other = (MapEntry) obj;
055        if (!areEqual(key, other.key)) return false;
056        return areEqual(value, other.value);
057      }
058    
059      @Override public int hashCode() {
060        int result = 1;
061        result = HASH_CODE_PRIME * result + hashCodeFor(key);
062        result = HASH_CODE_PRIME * result + hashCodeFor(value);
063        return result;
064      }
065    
066      @Override public String toString() {
067        return String.format("%s[key=%s, value=%s]", getClass().getSimpleName(), quote(key), quote(value));
068      }
069    }