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1
24 package org.objectweb.jalisto.se.impl.server.page;
25
26 import org.objectweb.jalisto.se.api.internal.JalistoObject;
27 import org.objectweb.jalisto.se.impl.InFileAddress;
28
29 public abstract class Page implements JalistoObject {
30
31 public Page(int size) {
32 storedDatas = new Object  [size];
33 }
34
35 public boolean isEmpty() {
36 for (short i = 0; i < storedDatas.length; i++) {
37 if (storedDatas[i] != null) {
38 return false;
39 }
40 }
41 return true;
42 }
43
44 public Object [] getAllDatas() {
45 return storedDatas;
46 }
47
48 public void setData(Object data) {
49 }
50
51 public Object getData() {
52 return storedDatas;
53 }
54
55 public void setDataAt(InFileAddress dataIfa, Object dataToInsert) {
56 storedDatas[dataIfa.getIndex()] = dataToInsert;
57 }
58
59 public void setDataAt(int index, Object dataToInsert) {
60 storedDatas[index] = dataToInsert;
61 }
62
63 public Object getDataAt(InFileAddress dataIfa) {
64 return storedDatas[dataIfa.getIndex()];
65 }
66
67 public Object getDataAt(int index) {
68 return storedDatas[index];
69 }
70
71 public void setIfa(InFileAddress ifa) {
72 this.ifa = ifa.getClone();
73 }
74
75 public InFileAddress getIfa() {
76 return ifa;
77 }
78
79 public int getSize() {
80 return storedDatas.length;
81 }
82
83 public JalistoObject internalClone(Page clone) {
84 clone.setIfa(ifa.getClone());
85 System.arraycopy(storedDatas, 0, clone.storedDatas, 0, storedDatas.length);
86 return clone;
87 }
88
89 public String toString() {
90 if (ifa != null) {
91 return pageName() + "@" + String.valueOf(ifa) + ":" + dataToString();
92 } else {
93 return pageName() + ":" + dataToString();
94 }
95 }
96
97 private String dataToString() {
98 StringBuffer sb = new StringBuffer ();
99 sb.append("[");
100 for (int i = 0; i < storedDatas.length; i++) {
101 if (storedDatas[i] == null) {
102 sb.append("null");
103 } else {
104 sb.append(storedDatas[i]);
105 }
106 if (i != (storedDatas.length - 1)) {
107 sb.append(";");
108 }
109 }
110 sb.append("]");
111 return sb.toString();
112 }
113
114 protected String pageName() {
115 return "P";
116 }
117
118
119 protected Object [] storedDatas;
120 protected transient InFileAddress ifa;
121
122
123 static final long serialVersionUID = -7589377099514761459L;
124
125
126 public static final short CLASSPAGE_TYPE = 0;
127 public static final short INSTANCEPAGE_TYPE = 1;
128 public static final short OIDPAGE_TYPE = 2;
129 public static final short SYSTEMPAGE_TYPE = 3;
130 public static final short NODEPAGE_TYPE = 4;
131 public static final short LEAFPAGE_TYPE = 5;
132 }
133 |
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