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1
4 package com.tc.object.applicator;
5
6 import com.tc.logging.TCLogger;
7 import com.tc.logging.TCLogging;
8 import com.tc.object.ClientObjectManager;
9 import com.tc.object.LiteralValues;
10 import com.tc.object.ObjectID;
11 import com.tc.object.TCObject;
12 import com.tc.object.dna.impl.DNAEncoding;
13 import com.tc.util.Assert;
14
15 import java.util.Map  ;
16
17 public abstract class BaseApplicator implements ChangeApplicator {
18
19 private static final TCLogger logger = TCLogging.getLogger(BaseApplicator.class);
20 private static final LiteralValues literals = new LiteralValues();
21
22 protected final DNAEncoding encoding;
23
24 protected BaseApplicator(DNAEncoding encoding) {
25 this.encoding = encoding;
26 }
27
28 protected final Object getDehydratableObject(Object pojo, ClientObjectManager objectManager) {
29 if (pojo == null) {
30 return ObjectID.NULL_ID;
31 } else if (literals.isLiteralInstance(pojo)) {
32 return pojo;
33 } else {
34 TCObject tcObject = objectManager.lookupExistingOrNull(pojo);
35 if (tcObject == null) {
36 logger
39 .warn("Not dehydrating object of type " + pojo.getClass().getName() + "@" + System.identityHashCode(pojo));
40 return null;
41 }
42 return tcObject.getObjectID();
43 }
44 }
45
46 protected final boolean isLiteralInstance(Object pojo) {
47 return literals.isLiteralInstance(pojo);
48 }
49
50 protected boolean isPortableReference(Class c) {
51 return !literals.isLiteral(c.getName());
52 }
53
54 protected Object createParentIfNecessary(Map visited, ClientObjectManager objectManager, Map cloned, Object v) {
55 return objectManager.createParentCopyInstanceIfNecessary(visited, cloned, v);
56 }
57
58 protected Object createCopyIfNecessary(ClientObjectManager objectManager, Map visited, Map cloned, Object originalValue) {
59 Object copyKey;
60 if (originalValue == null || isLiteralInstance(originalValue)) {
61 copyKey = originalValue;
62 } else if (visited.containsKey(originalValue)) {
63 Assert.eval(visited.get(originalValue) != null);
64 copyKey = visited.get(originalValue);
65 } else {
66 Assert.eval(!isLiteralInstance(originalValue));
67 copyKey = objectManager.createNewCopyInstance(originalValue, createParentIfNecessary(visited, objectManager, cloned, originalValue));
68
69 visited.put(originalValue, copyKey);
70 cloned.put(originalValue, copyKey);
71 }
72 return copyKey;
73 }
74
75 }
76 |
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