001/*****************************************************************************
002 * Copyright (C) PicoContainer Organization. All rights reserved.            *
003 * ------------------------------------------------------------------------- *
004 * The software in this package is published under the terms of the BSD      *
005 * style license a copy of which has been included with this distribution in *
006 * the LICENSE.txt file.                                                     *
007 *****************************************************************************/
008
009package org.picocontainer.gems.constraints;
010
011import org.picocontainer.ComponentAdapter;
012
013/**
014 * Constraint that accepts an adapter of a specific key.
015 *
016 * @author Nick Sieger
017 */
018@SuppressWarnings("serial")
019public final class IsKey extends AbstractConstraint {
020
021
022        private final Object key;
023
024    /**
025     * Creates a new <code>IsKey</code> instance.
026     *
027     * @param key the key to match
028     */
029    public IsKey(final Object key) {
030        this.key = key;
031    }
032
033    @Override
034        public boolean evaluate(final ComponentAdapter adapter) {
035        return key.equals(adapter.getComponentKey());
036    }
037
038}