diff options
Diffstat (limited to 'sca-java-1.x/tags/1.6/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java')
-rw-r--r-- | sca-java-1.x/tags/1.6/modules/implementation-spring-runtime/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-1.x/tags/1.6/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java b/sca-java-1.x/tags/1.6/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/processor/ComponentNameAnnotationProcessor.java new file mode 100644 index 0000000000..1197647b15 --- /dev/null +++ b/sca-java-1.x/tags/1.6/modules/implementation-spring-runtime/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.osoa.sca.annotations.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.");
+ }
+ }
+ }
+ });
+ }
+}
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