ReturnTypeMismatchException


1   /*****************************************************************************
2    * Copyright (C) Zephyr Business Solution. All rights reserved.            *
3    * ------------------------------------------------------------------------- *
4    * The software in this package is published under the terms of the BSD      *
5    * style license a copy of which has been included with this distribution in *
6    * the LICENSE.txt file.                                                     *
7    *****************************************************************************/
8   
9   /*
10   * Created on Apr 15, 2005
11   *
12   * Author Ben Yu
13   * ZBS
14   */
15  package jfun.yan;
16  
17  import java.lang.reflect.Method  ;
18  
19  import jfun.util.Misc;
20  
21  /**
22   * Represents an error when a component's type does not
23   * match the return type of the factory method that it implements.
24   * <p> 
25   * Zephyr Business Solution
26   *
27   * @author Ben Yu
28   *
29   */
30  public class ReturnTypeMismatchException extends TypeMismatchException {
31    private final Method   mtd;
32    
33    
34    /**
35     * Create a ReturnTypeMismatchException object.
36     * @param expected_type the expected type.
37     * @param actual_type the actual type.
38     * @param mtd the method.
39     */
40    public ReturnTypeMismatchException(Class   expected_type, Class   actual_type,
41        final Method   mtd) {
42      super(expected_type, actual_type, 
43          "" + Misc.getTypeName(actual_type)
44          + " cannot match return type of <"
45          + mtd + ">");
46      this.mtd = mtd;
47    }
48    /**
49     * Create a ReturnTypeMismatchException object.
50     * @param expected_type the expected type.
51     * @param actual_type the actual type.
52     * @param mtd the method.
53     * @param msg the error message.
54     */
55    public ReturnTypeMismatchException(
56        final Class   expected_type, final Class   actual_type,
57        final Method   mtd, final String   msg){
58      super(expected_type, actual_type, msg);
59      this.mtd = mtd;
60    }
61    /**
62     * Get the problematic method.
63     * @return the method.
64     */
65    public Method   getMethod() {
66      return mtd;
67    }
68  }
69
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