ContinuationNotFoundException


1   /*
2    * Copyright 2002-2006 the original author or authors.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.springframework.webflow.execution.repository.continuation;
17  
18  import java.io.Serializable  ;
19  
20  import org.springframework.webflow.execution.repository.FlowExecutionRepositoryException;
21  
22  /**
23   * Thrown when no flow execution continuation exists within a continuation
24   * group with a particular id. This might occur if the continuation has expired
25   * or was explictly invalidated but a client's browser page cache still references it.
26   * 
27   * @author Keith Donald
28   * @author Erwin Vervaet
29   */
30  public class ContinuationNotFoundException extends FlowExecutionRepositoryException {
31  
32      /**
33       * The unique continuation identifier that was not found.
34       */
35      private Serializable   continuationId;
36  
37      /**
38       * Creates a continuation not found exception.
39       * @param continuationId the continuation id that could not be found
40       */
41      public ContinuationNotFoundException(Serializable   continuationId) {
42          super("No flow execution continuation could be found in this group with id '" + continuationId
43                  + "' -- perhaps the continuation has expired or has been invalidated? ");
44      }
45  
46      /**
47       * Returns the continuation id that could not be found.
48       */
49      public Serializable   getContinuationId() {
50          return continuationId;
51      }
52  }

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