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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.jetspeed.page.impl;
18  
19  import java.util.Collection;
20  import java.util.List;
21  
22  import org.apache.commons.logging.Log;
23  import org.apache.commons.logging.LogFactory;
24  import org.apache.ojb.broker.util.collections.RemovalAwareCollection;
25  import org.apache.ojb.broker.util.collections.RemovalAwareList;
26  
27  
28  /***
29   * DatabasePageManagerUtils
30   * 
31   * @author <a href="mailto:taylor@apache.org">David Sean Taylor</a>
32   * @version $Id: $
33   */
34  public class DatabasePageManagerUtils
35  {
36      protected static Log log = LogFactory.getLog(DatabasePageManagerUtils.class);    
37      
38      /***
39       * OJB 1.0.3 requires collections to be removal aware.
40       * Thus we can't seem to get away with just creating ArrayLists
41       * This issue on occurs when persisting newly create object collections
42       * When persisting objects retrieved with OJB, this issue does not occur
43       * 
44       * @see JS2-590
45       * @return
46       */
47      public static final Collection createCollection()
48      {
49          return java.util.Collections.synchronizedCollection(new RemovalAwareCollection());
50      }
51      
52      public static final List createList()
53      {
54          return java.util.Collections.synchronizedList(new RemovalAwareList());
55      }
56      
57  }