diff options
author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-04 14:40:58 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-04 14:40:58 +0000 |
commit | b50b5bc26a1e15226ad6ec1fa626c75179f68706 (patch) | |
tree | 2d62802af45b0573060f7a891b337daaa38a9842 /sca-java-2.x/tags/sca-java-2.0-M5.1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java | |
parent | f515f04ccb9ec336701bc1796878e75ebec56c57 (diff) |
2.0-M5.1 RC1 release tag
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1004262 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/sca-java-2.0-M5.1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/sca-java-2.0-M5.1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java b/sca-java-2.x/tags/sca-java-2.0-M5.1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java new file mode 100644 index 0000000000..7613f8166d --- /dev/null +++ b/sca-java-2.x/tags/sca-java-2.0-M5.1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java @@ -0,0 +1,150 @@ +/* + * 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.processor; + +import java.beans.PropertyDescriptor; +import java.lang.annotation.Annotation; +import java.lang.ref.Reference; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; + +import org.oasisopen.sca.annotation.ComponentName; +import org.springframework.beans.BeanUtils; +import org.springframework.beans.BeansException; +import org.springframework.beans.FatalBeanException; +import org.springframework.beans.factory.config.BeanPostProcessor; +import org.springframework.util.Assert; +import org.springframework.util.ReflectionUtils; + +public class ComponentNameAnnotationProcessor implements BeanPostProcessor { + + private Class<? extends Annotation> componentNameAnnotationType = ComponentName.class; + + private String componentName; + + public ComponentNameAnnotationProcessor (String componentName) { + this.componentName = componentName; + } + + /** + * Gets componentName annotation type. + */ + protected Class<? extends Annotation> getComponentNameAnnotationType() { + return this.componentNameAnnotationType; + } + + /** + * Sets componentName annotation type. + */ + public void setComponentNameAnnotationType(Class<? extends Annotation> componentNameAnnotationType) { + Assert.notNull(componentNameAnnotationType, "'componentNameAnnotationType' type must not be null."); + this.componentNameAnnotationType = componentNameAnnotationType; + } + + /** + * This method is used to execute before a bean's initialization callback. + * + * @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessBeforeInitialization(java.lang.Object, java.lang.String) + */ + public Object postProcessBeforeInitialization(Object bean, String beanName) + throws BeansException { + processAnnotation(bean); + return bean; + } + + /** + * This method is used to execute after a bean's initialization callback. + * + * @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessAfterInitialization(java.lang.Object, java.lang.String) + */ + public Object postProcessAfterInitialization(Object bean, String beanName) + throws BeansException { + return bean; + } + + /** + * <p>Processes a beans fields for injection if it has a {@link Reference} annotation.</p> + */ + protected void processAnnotation(final Object bean) { + + final Class<?> clazz = bean.getClass(); + + ReflectionUtils.doWithFields(clazz, new ReflectionUtils.FieldCallback() { + public void doWith(Field field) { + Annotation annotation = field.getAnnotation(getComponentNameAnnotationType()); + + if (annotation != null) { + if (Modifier.isStatic(field.getModifiers())) { + throw new IllegalStateException("ComponentName annotation is not supported on static fields"); + } + + if (Modifier.isPrivate(field.getModifiers())) { + throw new IllegalStateException("ComponentName annotation is not supported on private fields"); + } + + ReflectionUtils.makeAccessible(field); + + if (field.getType().getName().equals("java.lang.String")) { + Object nameObj = componentName; + if (nameObj != null) + ReflectionUtils.setField(field, bean, nameObj); + } else { + throw new IllegalStateException("ComponentName annotation is supported only on java.lang.String field type."); + } + } + } + }); + + ReflectionUtils.doWithMethods(clazz, new ReflectionUtils.MethodCallback() { + public void doWith(Method method) { + Annotation annotation = method.getAnnotation(getComponentNameAnnotationType()); + + if (annotation != null) { + if (Modifier.isStatic(method.getModifiers())) { + throw new IllegalStateException("ComponentName annotation is not supported on static methods"); + } + + if (Modifier.isPrivate(method.getModifiers())) { + throw new IllegalStateException("ComponentName annotation is not supported on private methods"); + } + + if (method.getParameterTypes().length == 0) { + throw new IllegalStateException("ComponentName annotation requires at least one argument: " + method); + } + + PropertyDescriptor pd = BeanUtils.findPropertyForMethod(method); + + if (pd.getPropertyType().getName().equals("java.lang.String")) { + Object nameObj = componentName; + if (nameObj != null) { + try { + pd.getWriteMethod().invoke(bean, new Object[] { nameObj }); + } catch (Throwable e) { + throw new FatalBeanException("Problem injecting reference: " + e.getMessage(), e); + } + } + } else { + throw new IllegalStateException("ComponentName annotation is supported only on java.lang.String field type."); + } + } + } + }); + } +} |