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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.SCOIterator;
18
19 import javax.jdo.spi.PersistenceCapable;
20 import java.io.Serializable  ;
21 import java.util.Collection ;
22 import java.util.Iterator ;
23 import java.util.TreeSet ;
24
25 import com.versant.core.common.BindingSupportImpl;
26
27
30 public class DetachSCOTreeSet extends TreeSet implements Serializable , VersantSimpleSCO {
31
32 private PersistenceCapable owner;
33 private VersantStateManager stateManager;
34 private int fieldNo;
35
36 public DetachSCOTreeSet(PersistenceCapable owner, VersantStateManager stateManager,
37 VersantFieldMetaData fmd, Object [] originalData) {
38 super(fmd.getComparator());
39 this.owner = owner;
40 this.stateManager = stateManager;
41 this.fieldNo = fmd.getManagedFieldNo();
42 int n = originalData == null ? 0 : originalData.length;
43 if (!owner.jdoIsNew()) {
44 for (int i = 0; i < n; i++) {
45 Object o = originalData[i];
46 if (o == null) break;
47 super.add(o);
48 }
49 } else {
50 for (int i = 0; i < n; i++) {
51 Object o = originalData[i];
52 if (o == null) throw createNPE();
53 super.add(o);
54 }
55 }
56 }
57
58 private RuntimeException createNPE() {
59 return BindingSupportImpl.getInstance().nullElement("Null element not allowed.");
60 }
61
62 public boolean add(Object o) {
63 if (o == null) throw createNPE();
64 boolean result = super.add(o);
65 if (result) makeDirty();
66 return result;
67 }
68
69 public boolean remove(Object o) {
70 boolean result = super.remove(o);
71 if (result) {
72 makeDirty();
73 }
74 return result;
75 }
76
77 public void clear() {
78 super.clear();
79 makeDirty();
80 }
81
82 public boolean retainAll(Collection c) {
83 if (super.retainAll(c)) {
84 makeDirty();
85 return true;
86 }
87 return false;
88 }
89
90 public boolean removeAll(Collection c) {
91 if (super.removeAll(c)) {
92 makeDirty();
93 return true;
94 }
95 return false;
96 }
97
98 public boolean addAll(Collection c) {
99 if (super.addAll(c)) {
100 makeDirty();
101 return true;
102 }
103 return false;
104
105 }
106
107 public Iterator iterator() {
108 return new SCOIterator(super.iterator(), stateManager, owner, fieldNo);
109 }
110
111 private void makeDirty() {
112 if (stateManager != null && owner != null) {
113 stateManager.makeDirty(owner, fieldNo);
114 }
115 }
116
117 public void makeTransient() {
118 owner = null;
119 stateManager = null;
120 }
121 }
122 |
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