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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one
    3    * or more contributor license agreements.  See the NOTICE file
    4    * distributed with this work for additional information
    5    * regarding copyright ownership.  The ASF licenses this file
    6    * to you under the Apache License, Version 2.0 (the
    7    * "License"); you may not use this file except in compliance
    8    * with the License.  You may obtain a copy of the License at
    9    *
    10   *   http://www.apache.org/licenses/LICENSE-2.0
    11   *
    12   * Unless required by applicable law or agreed to in writing,
    13   * software distributed under the License is distributed on an
    14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    15   * KIND, either express or implied.  See the License for the
    16   * specific language governing permissions and limitations
    17   * under the License.
    18   */
    19
    20  package org.apache.myfaces.orchestra.conversation.spring;
    21
    22  import org.apache.myfaces.orchestra.conversation.ConversationBindingEvent;
    23  import org.apache.myfaces.orchestra.conversation.ConversationBindingListener;
    24
    25  /**
    26   * A simple class to tidy up persistence contexts.
    27   * <p>
    28   * An instance of this class can be stored into the attributes of a specific
    29   * Conversation object. Because it implements ConversationBindingListener, it
    30   * receives a valueUnbound callback when the Conversation is terminated. It
    31   * then closes the persistence context object associated with the Conversation.
    32   */
    33  public class PersistenceContextCloser implements ConversationBindingListener
    34  {
    35      private final PersistenceContext persistenceContext;
    36
    37      public PersistenceContextCloser(PersistenceContext persistenceContext)
    38      {
    39          this.persistenceContext = persistenceContext;
    40      }
    41
    42      public PersistenceContext getPersistenceContext()
    43      {
    44          return persistenceContext;
    45      }
    46
    47      public void valueBound(ConversationBindingEvent event)
    48      {
    49      }
    50
    51      public void valueUnbound(ConversationBindingEvent event)
    52      {
    53          persistenceContext.close();
    54      }
    55  }