summaryrefslogtreecommitdiffstats
path: root/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-spring-tie/src/main/java/org/apache/tuscany/sca/implementation/spring/context/tie/SpringImplementationStub.java
blob: 5ce52e668c76f9fd60dbc443538304fa83ec4f70 (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
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
/*
 * 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.context.tie;

import java.lang.reflect.Method;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;

/**
 * This is the runtime side stub for the corresponding Tuscany-side stub class.
 * It enables the Spring code in the runtime module to invoke methods on a
 * Tuscany SpringImplementation without the Spring runtime module
 * needing to know about any Tuscany classes. See the SpringImplementationTie class
 * in the implementation-spring module for what the tie does. 
 */
public class SpringImplementationStub {

    Object tie;
    Method getURI;
    Method getBean;
    Method getComponentName;
    Method getComponentTie;
    Method getPropertyValueTie;
    Method getClassLoader;
    Method getParentApplicationContext;

    public SpringImplementationStub(Object tie) {
        this.tie = tie;
        Class<?> tieClass = tie.getClass();
        try {
            getURI = tieClass.getMethod("getURI", new Class<?>[] {});
            getBean = tieClass.getMethod("getBean", new Class<?>[] {String.class, Class.class});
            getComponentName = tieClass.getMethod("getComponentName");
            getComponentTie = tieClass.getMethod("getComponentTie");
            getPropertyValueTie = tieClass.getMethod("getPropertyValueTie");
            getClassLoader = tieClass.getMethod("getClassLoader");
            getParentApplicationContext = tieClass.getMethod("getParentApplicationContext");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public String getURI() {
        try {

            return (String)getURI.invoke(tie);

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Get a Bean for a reference or for a property.
     *
     * @param name - the name of the Bean required
     * @param requiredType - the required type of the Bean (either a Java class or a Java interface)
     * @return Object - a Bean which matches the requested bean
     */
    public Object getBean(String name, Class<?> requiredType) throws BeansException {
        try {

            Object bean = getBean.invoke(tie, new Object[] {name, requiredType});
//            if (bean == null) {
//                throw new NoSuchBeanDefinitionException("Unable to find Bean with name " + name);
//            }
            return bean;

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public String getComponentName() {
        try {

            return (String)getComponentName.invoke(tie);

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public Object getComponentTie() {
        try {

            return getComponentTie.invoke(tie);

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public Object getPropertyValueTie() {
        try {

            return getPropertyValueTie.invoke(tie);

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public ClassLoader getClassLoader() {
        try {

            return (ClassLoader)getClassLoader.invoke(tie);

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
    
    /**
     * Get the parent Spring application context set by the Tuscany runtime
     * @return
     */
    public ApplicationContext getParentApplicationContext() {
        try {

            return (ApplicationContext)getParentApplicationContext.invoke(tie);

        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }
}