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
|
/*
* 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.implementation.osgi.xml;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import org.apache.tuscany.sca.assembly.AssemblyFactory;
import org.apache.tuscany.sca.assembly.ComponentType;
import org.apache.tuscany.sca.assembly.Reference;
import org.apache.tuscany.sca.assembly.Service;
import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
import org.apache.tuscany.sca.contribution.processor.ContributionWriteException;
import org.apache.tuscany.sca.contribution.processor.ProcessorContext;
import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
/*
<!-- A sample module-context.xml for OSGI RFC 124 (BluePrint Service) -->
<components xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">
<component id="CalculatorComponent" class="calculator.dosgi.impl.CalculatorServiceImpl">
<property name="addService" ref="AddService" />
<property name="subtractService" ref="SubtractService" />
<property name="multiplyService" ref="MultiplyService" />
<property name="divideService" ref="DivideService" />
</component>
<!-- We can derive the SCA services for the implementation.osgi -->
<service id="CalculatorService" ref="CalculatorComponent" interface="calculator.dosgi.CalculatorService">
</service>
<!-- We can derive the SCA references for the implementation.osgi -->
<reference id="AddService" interface="calculator.dosgi.operations.AddService">
</reference>
<reference id="SubtractService" interface="calculator.dosgi.operations.SubtractService">
</reference>
<reference id="MultiplyService" interface="calculator.dosgi.operations.MultiplyService">
</reference>
<reference id="DivideService" interface="calculator.dosgi.operations.DivideService">
</reference>
</components>
*/
public class BluePrintComponentsProcessor implements StAXArtifactProcessor<ComponentType> {
private static final String BLUE_PRINT_NS = "http://www.osgi.org/xmlns/blueprint/v1.0.0";
private static final String COMPOMENTS = "components";
private static final QName COMPONENTS_QNAME = new QName(BLUE_PRINT_NS, COMPOMENTS);
private AssemblyFactory factory;
private JavaInterfaceFactory javaInterfaceFactory;
public BluePrintComponentsProcessor(FactoryExtensionPoint modelFactories) {
this.factory = modelFactories.getFactory(AssemblyFactory.class);
this.javaInterfaceFactory = modelFactories.getFactory(JavaInterfaceFactory.class);
}
public ComponentType read(XMLStreamReader reader, ProcessorContext context) throws XMLStreamException {
int event = reader.getEventType();
ComponentType componentType = factory.createComponentType();
while (true) {
switch (event) {
case XMLStreamConstants.START_ELEMENT:
QName name = reader.getName();
if (COMPONENTS_QNAME.equals(name)) {
//
} else if ("reference".equals(name.getLocalPart())) {
Reference ref = factory.createReference();
ref.setName(reader.getAttributeValue(null, "id"));
String interfaceName = reader.getAttributeValue(null, "interface");
InterfaceContract interfaceContract = javaInterfaceFactory.createJavaInterfaceContract();
ref.setInterfaceContract(interfaceContract);
JavaInterface javaInterface = javaInterfaceFactory.createJavaInterface();
javaInterface.setUnresolved(true);
javaInterface.setName(interfaceName);
interfaceContract.setInterface(javaInterface);
componentType.getReferences().add(ref);
} else if ("service".equals(name.getLocalPart())) {
Service service = factory.createService();
String interfaceName = reader.getAttributeValue(null, "interface");
InterfaceContract interfaceContract = javaInterfaceFactory.createJavaInterfaceContract();
service.setInterfaceContract(interfaceContract);
JavaInterface javaInterface = javaInterfaceFactory.createJavaInterface();
javaInterface.setUnresolved(true);
javaInterface.setName(interfaceName);
interfaceContract.setInterface(javaInterface);
componentType.getServices().add(service);
}
break;
case XMLStreamConstants.END_ELEMENT:
name = reader.getName();
if (COMPONENTS_QNAME.equals(name)) {
return componentType;
}
break;
}
if (reader.hasNext()) {
event = reader.next();
} else {
return componentType;
}
}
}
public QName getArtifactType() {
return COMPONENTS_QNAME;
}
public void write(ComponentType model, XMLStreamWriter writer, ProcessorContext context) throws ContributionWriteException,
XMLStreamException {
// TODO: To be implemented
}
public Class<ComponentType> getModelType() {
return ComponentType.class;
}
public void resolve(ComponentType model, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException {
// TODO: To be implemented
}
}
|
