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1
21 package com.db4o.handlers;
22
23 import com.db4o.*;
24 import com.db4o.reflect.*;
25 import com.db4o.reflect.generic.*;
26
27
30 public abstract class NetSimpleTypeHandler extends YapTypeAbstract implements GenericConverter{
31
32 private final String  _name;
33 private final int _typeID;
34 private final int _byteCount;
35
36 public NetSimpleTypeHandler(YapStream stream, int typeID, int byteCount) {
37 super(stream);
38 _name = dotNetClassName();
39 _typeID = typeID;
40 _byteCount = byteCount;
41 }
42
43 public ReflectClass classReflector(){
44 if(_classReflector != null){
45 return _classReflector;
46 }
47 _classReflector = _stream.reflector().forName(_name);
48 return _classReflector;
49 }
50
51 public Object defaultValue() {
52 return new byte[_byteCount];
53 }
54
55 public String getName() {
56 return _name;
57 }
58
59 public int typeID() {
60 return _typeID;
61 }
62
63 public void write(Object obj, byte[] bytes, int offset) {
64 byte[] objBytes = bytesFor(obj);
65 System.arraycopy(objBytes, 0, bytes, offset, objBytes.length);
66 }
67
68 public Object read(byte[] bytes, int offset) {
69 byte[] ret = new byte[_byteCount];
70 System.arraycopy(bytes, offset, ret, 0, ret.length);
71 GenericObject go = new GenericObject((GenericClass)classReflector());
72 go.set(0, ret);
73 return go;
74 }
75
76 GenericObject genericObject(Object obj) {
77 if(obj != null) {
78 return (GenericObject)obj;
79 }
80 GenericObject go = new GenericObject((GenericClass)classReflector());
81 go.set(0, defaultValue());
82 return go;
83 }
84
85 byte[] genericObjectBytes(Object obj) {
86 GenericObject go = genericObject(obj);
87 return (byte[])go.get(0);
88 }
89
90 byte[] bytesFor(Object obj) {
91 if(obj instanceof byte[]) {
92 return (byte[])obj;
93 }
94 return genericObjectBytes(obj);
95 }
96
97 public int compare(Object compare, Object with) {
98 byte[] byteCompare = bytesFor(compare);
99 byte[] byteWith = bytesFor(with);
100 int min = byteCompare.length < byteWith.length ? byteCompare.length : byteWith.length;
101 for(int i = 0;i < min;i++) {
102 if (byteCompare[i] != byteWith[i]) {
103 return byteWith[i] - byteCompare[i];
104 }
105
106 }
107 return byteWith.length - byteCompare.length;
108 }
109
110 public boolean isEqual(Object cmp, Object with) {
111 return compare(cmp, with) == 0;
112 }
113
114 public String toString(GenericObject obj) {
115 return toString((byte[])obj.get(0));
116 }
117
118 public String toString(byte[] bytes) {
119 return "";
120 }
121
122
123 }
124 |
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