diff options
author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-08-29 18:32:20 +0000 |
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committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-08-29 18:32:20 +0000 |
commit | e6c733c4d9d9116216c0a0105b770267918a12f9 (patch) | |
tree | 4bab614eec77bcfffa469b7165dd6c1dddb2ec99 /sandbox/sebastien/java/embed/contrib/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/PropertyAnnotationProcessor.java | |
parent | 6dea67b43eb0b18d1c603ff3df6a4702a4f1e847 (diff) |
Sandbox to experiment with different ways to embed the runtime.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@990620 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sandbox/sebastien/java/embed/contrib/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/PropertyAnnotationProcessor.java')
-rw-r--r-- | sandbox/sebastien/java/embed/contrib/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/PropertyAnnotationProcessor.java | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/sandbox/sebastien/java/embed/contrib/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/PropertyAnnotationProcessor.java b/sandbox/sebastien/java/embed/contrib/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/PropertyAnnotationProcessor.java new file mode 100644 index 0000000000..4763714a38 --- /dev/null +++ b/sandbox/sebastien/java/embed/contrib/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/PropertyAnnotationProcessor.java @@ -0,0 +1,164 @@ +/* + * 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.reflect.Field; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; + +import org.apache.tuscany.sca.implementation.spring.provider.PropertyValueWrapper; +import org.oasisopen.sca.annotation.Property; +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 PropertyAnnotationProcessor implements BeanPostProcessor { + + private Class<? extends Annotation> propertyAnnotationType = Property.class; + + private PropertyValueWrapper propertyValue; + + public PropertyAnnotationProcessor(PropertyValueWrapper propertyValue) { + this.propertyValue = propertyValue; + } + + /** + * Gets property annotation type. + */ + protected Class<? extends Annotation> getPropertyAnnotationType() { + return this.propertyAnnotationType; + } + + /** + * Sets property annotation type. + */ + public void setPropertyAnnotationType(Class<? extends Annotation> propertyAnnotationType) { + Assert.notNull(propertyAnnotationType, "'propertyAnnotationType' type must not be null."); + this.propertyAnnotationType = propertyAnnotationType; + } + + /** + * 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 Property} annotation.</p> + */ + protected void processAnnotation(final Object bean) { + + final Class<?> clazz = bean.getClass(); + + ReflectionUtils.doWithMethods(clazz, new ReflectionUtils.MethodCallback() { + public void doWith(Method method) { + + Property annotation = (Property)method.getAnnotation(getPropertyAnnotationType()); + + if (annotation != null) { + if (Modifier.isStatic(method.getModifiers())) { + throw new IllegalStateException("Property annotation is not supported on static methods"); + } + + /* + if (Modifier.isPrivate(method.getModifiers())) { + throw new IllegalStateException("Property annotation is not supported on private methods"); + } + */ + + if (method.getParameterTypes().length == 0) { + throw new IllegalStateException("Property annotation requires at least one argument: " + method); + } + + PropertyDescriptor pd = BeanUtils.findPropertyForMethod(method); + if (pd != null) { + String propName = annotation.name(); + if ("".equals(propName)) { + injectProperty(bean, pd, propertyValue.getPropertyObj(pd.getPropertyType(), pd.getName())); + } else { + injectProperty(bean, pd, propertyValue.getPropertyObj(pd.getPropertyType(), propName)); + } + } + } + } + }); + + ReflectionUtils.doWithFields(clazz, new ReflectionUtils.FieldCallback() { + public void doWith(Field field) { + + Property annotation = (Property)field.getAnnotation(getPropertyAnnotationType()); + + if (annotation != null) { + if (Modifier.isStatic(field.getModifiers())) { + throw new IllegalStateException("Property annotation is not supported on static fields"); + } + + /* + if (Modifier.isPrivate(field.getModifiers())) { + throw new IllegalStateException("Property annotation is not supported on private fields"); + } + */ + + ReflectionUtils.makeAccessible(field); + + Object propertyObj = null; + String propName = annotation.name(); + if ("".equals(propName)) { + propertyObj = propertyValue.getPropertyObj(field.getType(), field.getName()); + } else { + propertyObj = propertyValue.getPropertyObj(field.getType(), propName); + } + + if (propertyObj != null) + ReflectionUtils.setField(field, bean, propertyObj); + } + } + }); + } + + public void injectProperty(Object bean, PropertyDescriptor pd, Object propertyObj) { + + if (propertyObj != null) { + try { + pd.getWriteMethod().invoke(bean, new Object[] {propertyObj}); + } catch (Throwable e) { + throw new FatalBeanException("Problem injecting property: " + e.getMessage(), e); + } + } + } + +} |