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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.databinding.jaxb;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.XmlElementDecl;
import javax.xml.bind.annotation.XmlRegistry;
import javax.xml.bind.annotation.XmlType;
import javax.xml.namespace.QName;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.TransformationException;
import org.apache.tuscany.sca.databinding.WrapperHandler;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
import org.apache.tuscany.sca.interfacedef.util.ElementInfo;
import org.apache.tuscany.sca.interfacedef.util.XMLType;
/**
* JAXB WrapperHandler implementation
*/
public class JAXBWrapperHandler implements WrapperHandler<JAXBElement<?>> {
public JAXBElement<?> create(ElementInfo element, TransformationContext context) {
try {
// FIXME: How do we map the global element to a factory?
String packageName = null;
String factoryClassName = packageName + ".ObjectFactory";
ClassLoader classLoader = context != null ? context.getClassLoader() : null;
if (classLoader == null) {
//FIXME Understand why we need this, the classloader should be passed in
classLoader = Thread.currentThread().getContextClassLoader();
}
Class<?> factoryClass = Class.forName(factoryClassName, true, classLoader);
assert factoryClass.isAnnotationPresent(XmlRegistry.class);
Object factory = factoryClass.newInstance();
QName elementName = element.getQName();
Method method = null;
for (Method m : factoryClass.getMethods()) {
XmlElementDecl xmlElement = m.getAnnotation(XmlElementDecl.class);
QName name = new QName(xmlElement.namespace(), xmlElement.name());
if (xmlElement != null && name.equals(elementName)) {
method = m;
break;
}
}
if (method != null) {
Class typeClass = method.getParameterTypes()[0];
Object value = typeClass.newInstance();
return (JAXBElement<?>)method.invoke(factory, new Object[] {value});
} else {
throw new TransformationException("ObjectFactory cannot be resolved.");
}
} catch (Exception e) {
throw new TransformationException(e);
}
}
public void setChild(JAXBElement<?> wrapper, int i, ElementInfo childElement, Object value) {
Object wrapperValue = wrapper.getValue();
Class<?> wrapperClass = wrapperValue.getClass();
XmlType xmlType = wrapperClass.getAnnotation(XmlType.class);
String[] properties = xmlType.propOrder();
String property = properties[i];
try {
for (Method m : wrapperClass.getMethods()) {
if (m.getName().equals("set" + capitalize(property))) {
m.invoke(wrapperValue, new Object[] {value});
return;
}
}
} catch (Throwable e) {
throw new TransformationException(e);
}
}
private static String capitalize(String name) {
char first = Character.toUpperCase(name.charAt(0));
return first + name.substring(1);
}
/**
* @see org.apache.tuscany.sca.databinding.WrapperHandler#getChildren(java.lang.Object, List, TransformationContext)
*/
public List getChildren(JAXBElement<?> wrapper, List<ElementInfo> childElements, TransformationContext context) {
Object wrapperValue = wrapper.getValue();
Class<?> wrapperClass = wrapperValue.getClass();
XmlType xmlType = wrapperClass.getAnnotation(XmlType.class);
String[] properties = xmlType.propOrder();
List<Object> elements = new ArrayList<Object>();
for (String p : properties) {
try {
Method method = wrapperClass.getMethod("get" + capitalize(p), (Class[])null);
Object value = method.invoke(wrapperValue, (Object[])null);
elements.add(value);
} catch (Throwable e) {
throw new TransformationException(e);
}
}
return elements;
}
/**
* @see org.apache.tuscany.sca.databinding.WrapperHandler#getWrapperType(org.apache.tuscany.sca.interfacedef.util.ElementInfo, List, org.apache.tuscany.sca.databinding.TransformationContext)
*/
public DataType getWrapperType(ElementInfo element, List<ElementInfo> childElements, TransformationContext context) {
try {
// FIXME: How do we map the global element to a factory?
String packageName = null;
String factoryClassName = packageName + ".ObjectFactory";
ClassLoader classLoader = context != null ? context.getClassLoader() : null;
if (classLoader == null) {
//FIXME Understand why we need this, the classloader should be passed in
classLoader = Thread.currentThread().getContextClassLoader();
}
Class<?> factoryClass = Class.forName(factoryClassName, true, classLoader);
assert factoryClass.isAnnotationPresent(XmlRegistry.class);
QName elementName = element.getQName();
Method method = null;
for (Method m : factoryClass.getMethods()) {
XmlElementDecl xmlElement = m.getAnnotation(XmlElementDecl.class);
QName name = new QName(xmlElement.namespace(), xmlElement.name());
if (xmlElement != null && name.equals(elementName)) {
method = m;
break;
}
}
if (method != null) {
Class typeClass = method.getParameterTypes()[0];
DataType<XMLType> wrapperType =
new DataTypeImpl<XMLType>(JAXBDataBinding.NAME, typeClass, new XMLType(element));
return wrapperType;
}
return null;
} catch (Throwable e) {
return null;
}
}
/**
* @see org.apache.tuscany.sca.databinding.WrapperHandler#isInstance(java.lang.Object, org.apache.tuscany.sca.interfacedef.util.ElementInfo, java.util.List, org.apache.tuscany.sca.databinding.TransformationContext)
*/
public boolean isInstance(Object wrapper,
ElementInfo element,
List<ElementInfo> childElements,
TransformationContext context) {
// TODO: Implement the logic
return true;
}
}
|
