SCOTreeSetFactory


1   
2   /*
3    * Copyright (c) 1998 - 2005 Versant Corporation
4    * All rights reserved. This program and the accompanying materials
5    * are made available under the terms of the Eclipse Public License v1.0
6    * which accompanies this distribution, and is available at
7    * http://www.eclipse.org/legal/epl-v10.html
8    *
9    * Contributors:
10   * Versant Corporation - initial API and implementation
11   */
12  package com.versant.core.jdo.sco;
13  
14  import com.versant.core.jdo.VersantPersistenceManager;
15  import com.versant.core.jdo.VersantStateManager;
16  import com.versant.core.common.VersantFieldMetaData;
17  import com.versant.core.common.Utils;
18  import com.versant.core.metadata.FieldMetaData;
19  import com.versant.core.common.BindingSupportImpl;
20  
21  import javax.jdo.spi.PersistenceCapable;
22  import java.io.Serializable  ;
23  import java.util.Collection  ;
24  
25  /**
26   *
27   */
28  public class SCOTreeSetFactory implements VersantSCOCollectionFactory,
29          Serializable   {
30  
31      /**
32       * Create a new SCOTreeSet instance that implements the
33       * VersantSCOCollection interface.
34       * <p/>
35       * If collectionData contains any OIDs they are first resolved into PC
36       * instances.
37       */
38      public VersantSimpleSCO createSCOCollection(PersistenceCapable owner,
39                                                   VersantPersistenceManager pm, VersantStateManager stateManager,
40                                                   VersantFieldMetaData fmd, CollectionData collectionData) {
41          int n = collectionData.valueCount;
42          Object  [] originalData = new Object  [n];
43          originalData = Utils.getObjectsById(collectionData.values,
44                  collectionData.valueCount, pm, (FieldMetaData) fmd,
45                  fmd.isElementTypePC());
46          return new SCOTreeSet(owner, stateManager, fmd, originalData);
47      }
48  
49      /**
50       * Create a new SCOTreeSet instance that implements the VersantSCOCollection
51       * interface and fill it with the data in collection.
52       */
53      public VersantSimpleSCO createSCOCollection(PersistenceCapable owner,
54                                                   VersantPersistenceManager pm, VersantStateManager stateManager,
55                                                   VersantFieldMetaData fmd, Collection   collection) {
56          return new SCOTreeSet(owner, stateManager, fmd, collection.toArray());
57      }
58      
59         
60  }
61
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