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1
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12 package com.versant.core.jdo.sco.detached;
13
14 import com.versant.core.jdo.VersantStateManager;
15 import com.versant.core.common.VersantFieldMetaData;
16 import com.versant.core.jdo.sco.VersantSimpleSCO;
17 import com.versant.core.jdo.sco.MapData;
18 import com.versant.core.jdo.VersantStateManager;
19
20 import javax.jdo.spi.PersistenceCapable;
21 import java.io.Serializable  ;
22 import java.util.Map ;
23 import java.util.TreeMap ;
24
25
28 public class DetachSCOTreeMap extends TreeMap implements Serializable , VersantSimpleSCO {
29
30 private PersistenceCapable owner;
31 private VersantStateManager stateManager;
32 private int fieldNo;
33
34 private DetachSCOTreeMap(PersistenceCapable owner,
35 VersantFieldMetaData fmd) {
36 super(fmd.getComparator());
37 this.owner = owner;
38 this.fieldNo = fmd.getManagedFieldNo();
39 }
40
41 public DetachSCOTreeMap(PersistenceCapable owner, VersantStateManager stateManager,
42 VersantFieldMetaData fmd, Map beforeMap) {
43 this(owner, fmd);
44 putAll(beforeMap);
45 this.stateManager = stateManager;
46 }
47
48 public DetachSCOTreeMap(PersistenceCapable owner, VersantStateManager stateManager,
49 VersantFieldMetaData fmd, MapData mapData) {
50 this(owner, fmd);
51 int n = mapData.entryCount;
52 Object [] keys = mapData.keys;
53 Object [] values = mapData.values;
54 for (int i = 0; i < n; i++) {
55 put(keys[i], values[i]);
56 }
57 this.stateManager = stateManager;
58 }
59
60 public Class getJavaType() {
61 return TreeMap .class;
62 }
63
64 public Object remove(Object key) {
65 return checkModified(super.remove(key));
66 }
67
68 public Object put(Object key, Object value) {
69 makeDirty();
70 return super.put(key, value);
71 }
72
73 public void putAll(Map t) {
74 makeDirty();
75 super.putAll(t);
76 }
77
78 public void clear() {
79 final int size = size();
80 super.clear();
81 if (size != 0) makeDirty();
82 }
83
84 public Object getOwner() {
85 return owner;
86 }
87
88 public void makeTransient() {
89 owner = null;
90 stateManager = null;
91 }
92
93 public void makeDirty() {
94 if (stateManager != null && owner != null) {
95 stateManager.makeDirty(owner, fieldNo);
96 }
97 }
98
99 private Object checkModified(Object obj) {
100 if (obj != null) {
101 makeDirty();
102 }
103 return obj;
104 }
105 }
106 |
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