blob: 5eaf27ab818ccd56712fc7a04c149fa70eb2d8ea (
plain)
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
|
/*
* 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.spring.introspect;
import java.util.List;
import org.apache.tuscany.sca.assembly.ComponentType;
import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.implementation.java.IntrospectionException;
import org.apache.tuscany.sca.implementation.java.JavaImplementation;
import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory;
import org.apache.tuscany.sca.implementation.spring.SpringConstructorArgElement;
import org.apache.tuscany.sca.implementation.spring.SpringImplementation;
/**
* Provides introspection functions for Spring beans
* This version leans heavily on the implementation-java classes
*
* @version $Rev$ $Date$
*/
public class SpringBeanIntrospector {
private JavaImplementationFactory javaImplementationFactory;
/**
* The constructor sets up the various visitor elements that will be used to introspect
* the Spring bean and extract SCA information.
*
* @param assemblyFactory The Assembly Factory to use
* @param javaFactory The Java Interface Factory to use
* @param policyFactory The Policy Factory to use.
*/
public SpringBeanIntrospector(ExtensionPointRegistry registry, List<SpringConstructorArgElement> conArgs) {
FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
javaImplementationFactory = factories.getFactory(JavaImplementationFactory.class);
} // end constructor
/**
* Introspect a Spring Bean and extract the features important to SCA
* @param beanClass the Spring Bean class to introspect
* @param componentType the componentType that is filled in through the introspection
* process (assumed empty on invocation, filled on return
* @return a Map of property names to JavaElementImpl
* @throws ContributionResolveException - if there was a problem resolving the
* Spring Bean or its componentType
*
*/
public JavaImplementation introspectBean(Class<?> beanClass, ComponentType componentType)
throws ContributionResolveException {
if (componentType == null)
throw new ContributionResolveException("Introspect Spring bean: supplied componentType is null");
// Create a Java implementation ready for the introspection
JavaImplementation javaImplementation = javaImplementationFactory.createJavaImplementation();
// Set the type to be implementation.spring to avoid heuristic introspection
javaImplementation.setType(SpringImplementation.TYPE);
try {
// Introspect the bean...the results of the introspection are placed into the Java implementation
javaImplementationFactory.createJavaImplementation(javaImplementation, beanClass);
// Extract the services, references & properties found through introspection
// put the services, references and properties into the component type
componentType.getServices().addAll(javaImplementation.getServices());
componentType.getReferences().addAll(javaImplementation.getReferences());
componentType.getProperties().addAll(javaImplementation.getProperties());
} catch (IntrospectionException e) {
throw new ContributionResolveException(e);
} // end try
return javaImplementation;
} // end method introspectBean
} // end class SpringBeanIntrospector
|
