Source Code Cross Referenced for AnnotationBeanWiringInfoResolver.java in  » J2EE » spring-framework-2.0.6 » org » springframework » beans » factory » annotation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » spring framework 2.0.6 » org.springframework.beans.factory.annotation 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * Copyright 2002-2007 the original author or authors.
03:         *
04:         * Licensed under the Apache License, Version 2.0 (the "License");
05:         * you may not use this file except in compliance with the License.
06:         * You may obtain a copy of the License at
07:         *
08:         *      http://www.apache.org/licenses/LICENSE-2.0
09:         *
10:         * Unless required by applicable law or agreed to in writing, software
11:         * distributed under the License is distributed on an "AS IS" BASIS,
12:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13:         * See the License for the specific language governing permissions and
14:         * limitations under the License.
15:         */
16:
17:        package org.springframework.beans.factory.annotation;
18:
19:        import org.springframework.beans.factory.wiring.BeanWiringInfo;
20:        import org.springframework.beans.factory.wiring.BeanWiringInfoResolver;
21:        import org.springframework.util.Assert;
22:        import org.springframework.util.ClassUtils;
23:
24:        /**
25:         * {@link org.springframework.beans.factory.wiring.BeanWiringInfoResolver} that
26:         * uses the Configurable annotation to identify which classes need autowiring.
27:         * The bean name to look up will be taken from the {@link Configurable} annotation
28:         * if specified; otherwise the default will be the fully-qualified name of the
29:         * class being configured.
30:         *
31:         * @author Rod Johnson
32:         * @author Juergen Hoeller
33:         * @since 2.0
34:         * @see Configurable
35:         * @see org.springframework.beans.factory.wiring.ClassNameBeanWiringInfoResolver
36:         */
37:        public class AnnotationBeanWiringInfoResolver implements 
38:                BeanWiringInfoResolver {
39:
40:            public BeanWiringInfo resolveWiringInfo(Object beanInstance) {
41:                Assert.notNull(beanInstance, "Bean instance must not be null");
42:                Configurable annotation = beanInstance.getClass()
43:                        .getAnnotation(Configurable.class);
44:                return (annotation != null ? buildWiringInfo(beanInstance,
45:                        annotation) : null);
46:            }
47:
48:            /**
49:             * Build the BeanWiringInfo for the given Configurable annotation.
50:             * @param beanInstance the bean instance
51:             * @param annotation the Configurable annotation found on the bean class
52:             * @return the resolved BeanWiringInfo
53:             */
54:            protected BeanWiringInfo buildWiringInfo(Object beanInstance,
55:                    Configurable annotation) {
56:                if (!Autowire.NO.equals(annotation.autowire())) {
57:                    return new BeanWiringInfo(annotation.autowire().value(),
58:                            annotation.dependencyCheck());
59:                } else {
60:                    String beanName = (!"".equals(annotation.value()) ? annotation
61:                            .value()
62:                            : getDefaultBeanName(beanInstance));
63:                    return new BeanWiringInfo(beanName);
64:                }
65:            }
66:
67:            /**
68:             * Determine the default bean name for the specified bean instance.
69:             * <p>The default implementation returns the superclass name for a CGLIB
70:             * proxy and the name of the plain bean class else.
71:             * @param beanInstance the bean instance to build a default name for
72:             * @return the default bean name to use
73:             * @see org.springframework.util.ClassUtils#getUserClass(Class)
74:             */
75:            protected String getDefaultBeanName(Object beanInstance) {
76:                return ClassUtils.getUserClass(beanInstance).getName();
77:            }
78:
79:        }
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