1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
//
// MessagePack for Java
//
// Copyright (C) 2009 FURUHASHI Sadayuki
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package org.msgpack.schema;
import java.util.Collection;
import java.util.List;
import java.lang.reflect.*;
import java.io.IOException;
import org.msgpack.*;
public class SpecificClassSchema extends ClassSchema {
private Class classCache;
private Method factoryCache;
private Constructor constructorCache;
public SpecificClassSchema(
String name, String namespace,
List<String> imports, List<FieldSchema> fields) {
super(name, namespace, imports, fields);
}
@Override
@SuppressWarnings("unchecked")
public void pack(Packer pk, Object obj) throws IOException {
if(obj == null) {
pk.packNil();
return;
}
if(classCache == null) {
cacheFactory();
}
if(classCache.isInstance(obj)) {
((MessagePackable)obj).messagePack(pk);
} else {
// FIXME Map<String,Object>
throw MessageTypeException.invalidConvert(obj, this);
}
}
@Override
public Object convert(Object obj) throws MessageTypeException {
if(obj instanceof Collection) {
if(constructorCache == null) {
cacheConstructor();
}
try {
MessageMergeable o = (MessageMergeable)constructorCache.newInstance((Object[])null);
o.messageMerge(obj);
return o;
} catch (InvocationTargetException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
} catch (InstantiationException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
} catch (IllegalAccessException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
}
} else {
throw MessageTypeException.invalidConvert(obj, this);
}
}
public Schema getElementSchema(int index) {
// FIXME check index < fields.length
return fields[index].getSchema();
}
public Object createFromArray(Object[] obj) {
if(factoryCache == null) {
cacheFactory();
}
try {
return factoryCache.invoke(null, new Object[]{obj});
} catch (InvocationTargetException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getCause());
} catch (IllegalAccessException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
}
}
@SuppressWarnings("unchecked")
private void cacheFactory() {
try {
classCache = Class.forName(fqdn);
factoryCache = classCache.getDeclaredMethod("createFromMessage", new Class[]{Object[].class});
factoryCache.setAccessible(true);
} catch(ClassNotFoundException e) {
throw new RuntimeException("class not found: "+fqdn);
} catch (NoSuchMethodException e) {
throw new RuntimeException("class not found: "+fqdn+": "+e.getMessage());
}
}
@SuppressWarnings("unchecked")
private void cacheConstructor() {
try {
classCache = Class.forName(fqdn);
constructorCache = classCache.getDeclaredConstructor((Class[])null);
constructorCache.setAccessible(true);
} catch(ClassNotFoundException e) {
throw new RuntimeException("class not found: "+fqdn);
} catch (NoSuchMethodException e) {
throw new RuntimeException("class not found: "+fqdn+": "+e.getMessage());
}
}
}
|
