NoSuchFlowExecutionException


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;
17  
18  /**
19   * Thrown when the flow execution with the persistent identifier provided could
20   * not be found. This could occur if the execution has been removed from the
21   * repository and a client still has a handle to the key.
22   * 
23   * @author Keith Donald
24   * @author Erwin Vervaet
25   */
26  public class NoSuchFlowExecutionException extends FlowExecutionAccessException {
27  
28      /**
29       * Creates a new no such flow execution exception.
30       * @param flowExecutionKey the key of the execution that could not be
31       * found
32       * @param cause the root cause of the failure
33       */
34      public NoSuchFlowExecutionException(FlowExecutionKey flowExecutionKey, Exception   cause) {
35          super(flowExecutionKey, "No flow execution could be found with key '" + flowExecutionKey
36                  + "' -- perhaps this executing flow has ended or expired? "
37                  + "This could happen if your users are relying on browser history "
38                  + "(typically via the back button) that references ended flows.", cause);
39      }
40  }

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