PicoVerificationException


1   /*****************************************************************************
2    * Copyright (C) PicoContainer Organization. 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    * Original code by                                                          *
9    *****************************************************************************/
10  package org.picocontainer;
11  
12  import java.util.ArrayList  ;
13  import java.util.List  ;
14  
15  
16  /**
17   * Subclass of {@link PicoException} that is thrown when a {@link PicoContainer} hierarchy
18   * cannot be verified. A failing verification is caused by ambuigities or missing dependencies
19   * between the registered components and their parameters. This exception is designed as a
20   * collector for all Exceptions occuring at the verification of the complete container
21   * hierarchy. The verification is normally done with the
22   * {@link org.picocontainer.defaults.VerifyingVisitor}, that will throw this exception.
23   * 
24   * @version $Revision: 1801 $
25   * @since 1.0
26   */
27  public class PicoVerificationException
28          extends PicoException {
29      /**
30       * The exceptions that caused this one.
31       */
32      private final List   nestedExceptions = new ArrayList  ();
33  
34      /**
35       * Construct a new exception with a list of exceptions that caused this one.
36       * 
37       * @param nestedExceptions the exceptions that caused this one.
38       */
39      public PicoVerificationException(final List   nestedExceptions) {
40          this.nestedExceptions.addAll(nestedExceptions);
41      }
42  
43      /**
44       * Retrieve the list of exceptions that caused this one.
45       * 
46       * @return the list of exceptions that caused this one.
47       */
48      public List   getNestedExceptions() {
49          return nestedExceptions;
50      }
51  
52      /**
53       * Return a string listing of all the messages associated with the exceptions that caused
54       * this one.
55       * 
56       * @return a string listing of all the messages associated with the exceptions that caused
57       *               this one.
58       */
59      public String   getMessage() {
60          return nestedExceptions.toString();
61      }
62  }
63
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