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1   /*
2    * $Id: TemporaryMethodKey.java,v 1.3 2004/07/10 03:31:42 bran Exp $
3    *
4    * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5    *
6    * Redistribution and use of this software and associated documentation
7    * ("Software"), with or without modification, are permitted provided that the
8    * following conditions are met:
9    *  1. Redistributions of source code must retain copyright statements and
10   * notices. Redistributions must also contain a copy of this document.
11   *  2. Redistributions in binary form must reproduce the above copyright
12   * notice, this list of conditions and the following disclaimer in the
13   * documentation and/or other materials provided with the distribution.
14   *  3. The name "groovy" must not be used to endorse or promote products
15   * derived from this Software without prior written permission of The Codehaus.
16   * For written permission, please contact info@codehaus.org.
17   *  4. Products derived from this Software may not be called "groovy" nor may
18   * "groovy" appear in their names without prior written permission of The
19   * Codehaus. "groovy" is a registered trademark of The Codehaus.
20   *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
21   *
22   * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
23   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25   * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
26   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
32   * DAMAGE.
33   *
34   */
35  package org.codehaus.groovy.runtime;
36  
37  import groovy.lang.MetaClass;
38  
39  /***
40   * A temporary implementation of MethodKey used to perform a fast lookup
41   * for a method using a set of arguments to a method
42   * 
43   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
44   * @version $Revision: 1.3 $
45   */
46  public class TemporaryMethodKey extends MethodKey {
47  
48      private Object[] parameterValues;
49  
50      public TemporaryMethodKey(String name, Object[] parameterValues) {
51          super(name);
52          if (parameterValues == null) {
53              parameterValues = MetaClass.EMPTY_ARRAY;
54          }
55          this.parameterValues = parameterValues;
56      }
57  
58      public int getParameterCount() {
59          return parameterValues.length;
60      }
61  
62      public Class getParameterType(int index) {
63          Object value = parameterValues[index];
64  
65          if (value != null ) {
66              Class type = (Class)((value.getClass() == java.lang.Class.class) ?
67                      value :
68                      value.getClass());
69              return type;
70          }
71  
72          return Object.class;
73      }
74  }