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1 package org.openejb.util.io;
2
3
4 import java.io.IOException  ;
5 import java.io.InvalidClassException ;
6 import java.lang.reflect.Field ;
7
8 public class FieldDescriptor implements java.io.Serializable , Comparable {
9
10
11
18 public FieldDescriptor(Field field){
19 this.field = field;
20 this.name = field.getName();
21 this.type = field.getType();
22
23 if (type.isPrimitive()) {
24 if (type == Integer.TYPE) typeCode = 'I';
25 else if (type == Byte.TYPE) typeCode = 'B';
26 else if (type == Long.TYPE) typeCode = 'J';
27 else if (type == Float.TYPE) typeCode = 'F';
28 else if (type == Double.TYPE) typeCode = 'D';
29 else if (type == Short.TYPE) typeCode = 'S';
30 else if (type == Character.TYPE) typeCode = 'C';
31 else if (type == Boolean.TYPE) typeCode = 'Z';
32 else if (type == Void.TYPE) typeCode = 'V';
33 }
34 else if (type.isArray()) {
35 typeCode = '[';
36 typeString = ClassDescriptor.getSignature(type).toString().intern();
37 }
38 else {
39 typeCode = 'L';
40 StringBuffer buf = new StringBuffer ();
41 buf.append(typeCode);
42 buf.append(type.getName().replace('.', '/'));
43 buf.append(';');
44 typeString = buf.toString().intern();
45 }
46
47 }
48
49 public FieldDescriptor(String name, Class type){
50
51 }
52
53 protected String typeString;
54
55 public String getTypeString(){
56 return typeString;
57 }
58
59
62 protected String name;
63
64 public String getName(){
65 return name;
66 }
67
68 public void setName(String name){
69 this.name = name;
70 }
71
72 protected Field field;
73
74 public Field getField(){
75 return field;
76 }
77
78 public void setField(Field field){
79 this.field = field;
80 }
81
82 protected char typeCode;
83
84 public char getTypeCode(){
85 return typeCode;
86 }
87
88 public void setTypeCode(char typeCode){
89 this.typeCode = typeCode;
90 }
91
92 protected Class type;
93
94
100 public int compareTo(Object o) {
105 FieldDescriptor f2 = (FieldDescriptor)o;
106 boolean thisprim = (this.typeString == null);
107 boolean otherprim = (f2.typeString == null);
108
109 if (thisprim != otherprim) {
110 return (thisprim ? -1 : 1);
111 }
112 return this.name.compareTo(f2.name);
113 }
114
115
121 protected ClassDescriptor classDesc;
122
123 public ClassDescriptor getClassDescriptor(){
124 return classDesc;
125 }
126
127 public void setClassDescriptor(ClassDescriptor classDesc){
128 this.classDesc = classDesc;
129 }
130
131 public void writeDesc(ObjectOutputStream out) throws IOException {
132 out.writeByte((int)typeCode);
133 out.writeUTF(name);
134 if (!type.isPrimitive()) out.writeString(typeString);
135 }
136
137 public void write(Object o, ObjectOutputStream out) throws IOException , InvalidClassException {
138
139 if (field == null) throw new InvalidClassException (classDesc.forClass().getName(), "Nonexistent field " + name);
140 try {
141 switch (typeCode) {
142 case 'B': out.writeByte(field.getByte(o)); break;
143 case 'C': out.writeChar(field.getChar(o)); break;
144 case 'I': out.writeInt(field.getInt(o)); break;
145 case 'Z': out.writeBoolean(field.getBoolean(o)); break;
146 case 'J': out.writeLong(field.getLong(o)); break;
147 case 'F': out.writeFloat(field.getFloat(o)); break;
148 case 'D': out.writeDouble(field.getDouble(o)); break;
149 case 'S': out.writeShort(field.getShort(o)); break;
150 case '[':
151 case 'L': out.writeObject(field.get(o)); break;
152 default: throw new InvalidClassException (classDesc.forClass().getName());
153 }
154 }
155 catch (IllegalAccessException e) {
156 throw new InvalidClassException (classDesc.forClass().getName(), e.getMessage());
157 }
158 }
159 } |
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