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  /*
   * 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.tie;
 
 
 
 public class ReferenceAnnotationProcessor implements BeanPostProcessor {
 
     private Class<? extends AnnotationreferenceAnnotationType = Reference.class;
     private ComponentStub component;
 
     public ReferenceAnnotationProcessor(ComponentStub component) {
         this. = component;
     }

    
Gets referece annotation type.
 
     protected Class<? extends AnnotationgetReferenceAnnotationType() {
         return this.;
     }

    
Sets referece annotation type.
 
     public void setReferenceAnnotationType(Class<? extends AnnotationreferenceAnnotationType) {
         Assert.notNull(referenceAnnotationType"'referenceAnnotationType' type must not be null.");
         this. = referenceAnnotationType;
     }

    
 
     public Object postProcessBeforeInitialization(Object beanString beanNamethrows BeansException {
         processAnnotation(bean);
         return bean;
     }

    
 
     public Object postProcessAfterInitialization(Object beanString beanNamethrows BeansException {
         return bean;
     }

    

Processes a beans fields for injection if it has a org.oasisopen.sca.annotation.Reference annotation.

 
     protected void processAnnotation(final Object bean) {
 
         final Class<?> clazz = bean.getClass();
 
         ReflectionUtils.doWithMethods(clazznew ReflectionUtils.MethodCallback() {
             public void doWith(Method method) {
 
                 Reference annotation = (Reference)method.getAnnotation(getReferenceAnnotationType());
 
                 if (annotation != null) {
                     if (Modifier.isStatic(method.getModifiers())) {
                         throw new IllegalStateException("Reference annotation is not supported on static methods");
                     }
 
                     /*
                     if (Modifier.isPrivate(method.getModifiers())) {
                         throw new IllegalStateException("Reference annotation is not supported on private methods");
                     }
                     */
                    if (method.getParameterTypes().length == 0) {
                        throw new IllegalStateException(
                                                        "Reference annotation requires at least one argument: " + method);
                    }
                    PropertyDescriptor pd = BeanUtils.findPropertyForMethod(method);
                    if (pd != null) {
                        String refName = annotation.name();
                        if ("".equals(refName)) {
                            injectReference(beanpdpd.getName());
                        } else {
                            injectReference(beanpdrefName);
                        }
                    }
                }
            }
        });
        ReflectionUtils.doWithFields(clazznew ReflectionUtils.FieldCallback() {
            public void doWith(Field field) {
                Reference annotation = (Reference)field.getAnnotation(getReferenceAnnotationType());
                if (annotation != null) {
                    if (Modifier.isStatic(field.getModifiers())) {
                        throw new IllegalStateException("Reference annotation is not supported on static fields");
                    }
                    /*
                    if (Modifier.isPrivate(field.getModifiers())) {
                        throw new IllegalStateException("Reference annotation is not supported on private fields");
                    }
                    */
                    ReflectionUtils.makeAccessible(field);
                    Object referenceObj = null;
                    String refName = annotation.name();
                    if ("".equals(refName)) {
                        referenceObj = .getService(field.getType(), field.getName());
                    } else {
                        referenceObj = .getService(field.getType(), refName);
                    }
                    if (referenceObj != null)
                        ReflectionUtils.setField(fieldbeanreferenceObj);
                }
            }
        });
    }

    
Processes a property descriptor to inject a service.
    public void injectReference(Object beanPropertyDescriptor pdString name) {
        Object referenceObj = .getService(pd.getPropertyType(), name);
        if (referenceObj != null) {
            try {
                pd.getWriteMethod().invoke(beannew Object[] {referenceObj});
            } catch (Throwable e) {
                throw new FatalBeanException("Problem injecting reference:  " + e.getMessage(), e);
            }
        }
    }
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