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 package org.apache.openjpa.kernel;
20
21 import java.util.BitSet;
22
23 import org.apache.openjpa.util.OpenJPAException;
24 import org.apache.openjpa.util.StoreException;
25
26 /**
27 * Wraps the native store manager to handle calls using custom
28 * {@link PCResultObjectProvider}s.
29 *
30 * @author Abe White
31 */
32 class ROPStoreManager
33 extends DelegatingStoreManager {
34
35 public ROPStoreManager(StoreManager delegate) {
36 super(delegate);
37 }
38
39 public boolean exists(OpenJPAStateManager sm, Object context) {
40 if (context instanceof PCResultObjectProvider)
41 context = null;
42 return super.exists(sm, context);
43 }
44
45 public boolean initialize(OpenJPAStateManager sm, PCState state,
46 FetchConfiguration fetch, Object context) {
47 if (context instanceof PCResultObjectProvider) {
48 try {
49 ((PCResultObjectProvider) context).initialize(sm, state, fetch);
50 } catch (OpenJPAException ke) {
51 throw ke;
52 } catch (Exception e) {
53 throw new StoreException(e);
54 }
55 return true;
56 }
57 return super.initialize(sm, state, fetch, context);
58 }
59
60 public boolean syncVersion(OpenJPAStateManager sm, Object context) {
61 // the only way this gets called with a rop context is if the
62 // rop didn't load any version info on initialize, so just null
63 // it out so we don't get unexpected results when our delegate
64 // expectes a different context type
65 if (context instanceof PCResultObjectProvider)
66 context = null;
67 return super.syncVersion(sm, context);
68 }
69
70 public boolean load(OpenJPAStateManager sm, BitSet fields,
71 FetchConfiguration fetch, int lockLevel, Object context) {
72 // the only way this gets called with a rop context is if the
73 // rop didn't load the field on initialize, so just null
74 // it out so we don't get unexpected results when our delegate
75 // expectes a different context type
76 if (context instanceof PCResultObjectProvider)
77 context = null;
78 return super.load(sm, fields, fetch, lockLevel, context);
79 }
80 }
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