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1
8
9 package com.sleepycat.persist.impl;
10
11 import java.lang.reflect.Array  ;
12 import java.lang.reflect.Modifier ;
13 import java.util.Collections ;
14 import java.util.HashMap ;
15 import java.util.Map ;
16
17
22 public class EnhancedAccessor implements Accessor {
23
24 private static final Map <String ,Enhanced> classRegistry =
25 Collections.synchronizedMap(new HashMap <String ,Enhanced>());
26
27
28 public static final boolean EXPECT_ENHANCED =
29 "true".equals(System.getProperty("expectEnhanced"));
30
31 private Enhanced prototype;
32 private Format priKeyFormat;
33 private Class type;
34
35
40 public static void registerClass(String className, Enhanced prototype) {
41 classRegistry.put(className, prototype);
42 }
43
44
47 static boolean isEnhanced(Class type) {
48 boolean enhanced = classRegistry.containsKey(type.getName());
49 if (!enhanced && EXPECT_ENHANCED) {
50 throw new IllegalStateException
51 ("Test was run with expectEnhanced=true but class " +
52 type.getName() + " is not enhanced");
53 }
54 return enhanced;
55 }
56
57
60 EnhancedAccessor(Class type) {
61 this.type = type;
62 prototype = classRegistry.get(type.getName());
63 assert prototype != null || Modifier.isAbstract(type.getModifiers());
64 }
65
66
69 EnhancedAccessor(Catalog catalog, Class type, ComplexFormat format) {
70 this(type);
71
72
76 ComplexFormat declaringFormat = format;
77 while (declaringFormat != null) {
78 String priKeyField = declaringFormat.getPriKeyField();
79 if (priKeyField != null) {
80 Class declaringType = declaringFormat.getType();
81 Class fieldType;
82 try {
83 fieldType =
84 declaringType.getDeclaredField(priKeyField).getType();
85 } catch (NoSuchFieldException e) {
86 throw new IllegalStateException (e);
87 }
88 priKeyFormat = catalog.getFormat(fieldType);
89 break;
90 } else {
91 Format superFormat = declaringFormat.getSuperFormat();
92 declaringFormat = (ComplexFormat) superFormat;
93 }
94 }
95 }
96
97 public Object newInstance() {
98 if (prototype == null) {
99
100 throw new IllegalStateException ();
101 }
102 return prototype.bdbNewInstance();
103 }
104
105 public Object newArray(int len) {
106 if (prototype == null) {
107
108 return Array.newInstance(type, len);
109 }
110 return prototype.bdbNewArray(len);
111 }
112
113 public boolean isPriKeyFieldNullOrZero(Object o) {
114 if (priKeyFormat == null) {
115 throw new IllegalStateException
116 ("No primary key: " + o.getClass().getName());
117 }
118 return ((Enhanced) o).bdbIsPriKeyFieldNullOrZero();
119 }
120
121 public void writePriKeyField(Object o, EntityOutput output) {
122 if (priKeyFormat == null) {
123 throw new IllegalStateException
124 ("No primary key: " + o.getClass().getName());
125 }
126 ((Enhanced) o).bdbWritePriKeyField(output, priKeyFormat);
127 }
128
129 public void readPriKeyField(Object o, EntityInput input) {
130 if (priKeyFormat == null) {
131 throw new IllegalStateException
132 ("No primary key: " + o.getClass().getName());
133 }
134 ((Enhanced) o).bdbReadPriKeyField(input, priKeyFormat);
135 }
136
137 public void writeSecKeyFields(Object o, EntityOutput output) {
138 ((Enhanced) o).bdbWriteSecKeyFields(output);
139 }
140
141 public void readSecKeyFields(Object o,
142 EntityInput input,
143 int startField,
144 int endField,
145 int superLevel) {
146 ((Enhanced) o).bdbReadSecKeyFields
147 (input, startField, endField, superLevel);
148 }
149
150 public void writeNonKeyFields(Object o, EntityOutput output) {
151 ((Enhanced) o).bdbWriteNonKeyFields(output);
152 }
153
154 public void readNonKeyFields(Object o,
155 EntityInput input,
156 int startField,
157 int endField,
158 int superLevel) {
159 ((Enhanced) o).bdbReadNonKeyFields
160 (input, startField, endField, superLevel);
161 }
162
163 public Object getField(Object o,
164 int field,
165 int superLevel,
166 boolean isSecField) {
167 return ((Enhanced) o).bdbGetField(o, field, superLevel, isSecField);
168 }
169
170 public void setField(Object o,
171 int field,
172 int superLevel,
173 boolean isSecField,
174 Object value) {
175 ((Enhanced) o).bdbSetField(o, field, superLevel, isSecField, value);
176 }
177 }
178 |
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