001    /*
002     * $Id: TemporaryMethodKey.java,v 1.3 2004/07/10 03:31:42 bran Exp $
003     *
004     * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005     *
006     * Redistribution and use of this software and associated documentation
007     * ("Software"), with or without modification, are permitted provided that the
008     * following conditions are met:
009     *  1. Redistributions of source code must retain copyright statements and
010     * notices. Redistributions must also contain a copy of this document.
011     *  2. Redistributions in binary form must reproduce the above copyright
012     * notice, this list of conditions and the following disclaimer in the
013     * documentation and/or other materials provided with the distribution.
014     *  3. The name "groovy" must not be used to endorse or promote products
015     * derived from this Software without prior written permission of The Codehaus.
016     * For written permission, please contact info@codehaus.org.
017     *  4. Products derived from this Software may not be called "groovy" nor may
018     * "groovy" appear in their names without prior written permission of The
019     * Codehaus. "groovy" is a registered trademark of The Codehaus.
020     *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
021     *
022     * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
023     * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
024     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
025     * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
026     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
027     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
028     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
029     * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
030     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
031     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
032     * DAMAGE.
033     *
034     */
035    package org.codehaus.groovy.runtime;
036    
037    import groovy.lang.MetaClass;
038    
039    /**
040     * A temporary implementation of MethodKey used to perform a fast lookup
041     * for a method using a set of arguments to a method
042     * 
043     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
044     * @version $Revision: 1.3 $
045     */
046    public class TemporaryMethodKey extends MethodKey {
047    
048        private Object[] parameterValues;
049    
050        public TemporaryMethodKey(String name, Object[] parameterValues) {
051            super(name);
052            if (parameterValues == null) {
053                parameterValues = MetaClass.EMPTY_ARRAY;
054            }
055            this.parameterValues = parameterValues;
056        }
057    
058        public int getParameterCount() {
059            return parameterValues.length;
060        }
061    
062        public Class getParameterType(int index) {
063            Object value = parameterValues[index];
064    
065            if (value != null ) {
066                Class type = (Class)((value.getClass() == java.lang.Class.class) ?
067                        value :
068                        value.getClass());
069                return type;
070            }
071    
072            return Object.class;
073        }
074    }