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1
2
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.SCOIterator;
18 import com.versant.core.jdo.VersantStateManager;
19
20 import javax.jdo.spi.PersistenceCapable;
21 import java.io.Serializable  ;
22 import java.util.Collection ;
23 import java.util.HashSet ;
24 import java.util.Iterator ;
25
26 import com.versant.core.common.BindingSupportImpl;
27
28
31 public class DetachSCOHashSet extends HashSet implements Serializable , VersantSimpleSCO {
32
33 private PersistenceCapable owner;
34 private VersantStateManager stateManager;
35 private int fieldNo;
36
37 public DetachSCOHashSet(PersistenceCapable owner, VersantStateManager stateManager,
38 VersantFieldMetaData fmd, Object [] originalData) {
39 this.owner = owner;
40 this.stateManager = stateManager;
41 this.fieldNo = fmd.getManagedFieldNo();
42 int n = originalData == null ? 0 : originalData.length;
43 for (int i = 0; i < n; i++) {
44 Object o = originalData[i];
45 if (o == null) throw createNPE();
46 super.add(o);
47 }
48 }
49
50 private RuntimeException createNPE() {
51 return BindingSupportImpl.getInstance().nullElement("Null element not allowed.");
52 }
53
54 public boolean add(Object o) {
55 if (o == null) throw createNPE();
56 boolean result = super.add(o);
57 if (result) makeDirty();
58 return result;
59 }
60
61 public boolean remove(Object o) {
62 boolean result = super.remove(o);
63 if (result) {
64 makeDirty();
65 }
66 return result;
67 }
68
69 public void clear() {
70 super.clear();
71 makeDirty();
72 }
73
74 public boolean retainAll(Collection c) {
75 if (super.retainAll(c)) {
76 makeDirty();
77 return true;
78 }
79 return false;
80 }
81
82 public boolean removeAll(Collection c) {
83 if (super.removeAll(c)) {
84 makeDirty();
85 return true;
86 }
87 return false;
88 }
89
90 public boolean addAll(Collection c) {
91 if (super.addAll(c)) {
92 makeDirty();
93 return true;
94 }
95 return false;
96
97 }
98
99 public Iterator iterator() {
100 return new SCOIterator(super.iterator(), stateManager, owner, fieldNo);
101 }
102
103 private void makeDirty() {
104 if (stateManager != null && owner != null) {
105 stateManager.makeDirty(owner, fieldNo);
106 }
107 }
108
109 public void makeTransient() {
110 owner = null;
111 stateManager = null;
112 }
113 }
114 |
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