001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket;
018
019
020import org.apache.wicket.util.io.IClusterable;
021
022/**
023 * Class used for holding meta data entries.
024 * 
025 * @author Jonathan Locke
026 * @param <T>
027 *            The meta data key type
028 */
029public final class MetaDataEntry<T> implements IClusterable
030{
031        private static final long serialVersionUID = 1L;
032
033        final MetaDataKey<T> key;
034
035        Object object;
036
037        /**
038         * Construct.
039         * 
040         * @param key
041         *            meta data key
042         * @param object
043         */
044        public MetaDataEntry(MetaDataKey<T> key, Object object)
045        {
046                this.key = key;
047                this.object = object;
048        }
049
050        /**
051         * @see java.lang.Object#toString()
052         */
053        @Override
054        public String toString()
055        {
056                return key + "=" + object.getClass().getName() + "@" +
057                        Integer.toHexString(object.hashCode());
058        }
059}