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;
012import org.picocontainer.Parameter;
013
014/**
015 * Extension to {@link org.picocontainer.Parameter} that allows for
016 * constraint-based configuration of component parameters.
017 *
018 * @author Nick Sieger
019 */
020public interface Constraint extends Parameter {
021    /**
022     * Evaluate whether the given component adapter matches this constraint.
023     *
024     * @param adapter a <code>ComponentAdapter</code> value
025     * @return true if the adapter matches the constraint
026     */
027    boolean evaluate(ComponentAdapter adapter);
028}