content: /**
   *  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.aries.blueprint.spring;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.aries.blueprint.BeanProcessor;
  import org.apache.aries.blueprint.ComponentDefinitionRegistry;
  import org.apache.aries.blueprint.ComponentDefinitionRegistryProcessor;
  import org.apache.aries.blueprint.ExtendedBeanMetadata;
  import org.apache.aries.blueprint.services.ExtendedBlueprintContainer;
  import org.apache.aries.blueprint.spring.BlueprintBeanFactory.SpringMetadata;
  import org.osgi.framework.BundleContext;
  import org.osgi.framework.wiring.BundleWiring;
  import org.osgi.service.blueprint.reflect.BeanMetadata;
  import org.springframework.beans.factory.Aware;
  import org.springframework.beans.factory.BeanClassLoaderAware;
  import org.springframework.beans.factory.BeanFactoryAware;
  import org.springframework.beans.factory.BeanNameAware;
  
  public class SpringBeanProcessor implements BeanProcessor, ComponentDefinitionRegistryProcessor {
  
      private final BundleContext bundleContext;
      private final ExtendedBlueprintContainer blueprintContainer;
      private final SpringApplicationContext applicationContext;
      boolean creatingProcessor;
  
      public SpringBeanProcessor(
              BundleContext bundleContext,
              ExtendedBlueprintContainer blueprintContainer,
              SpringApplicationContext applicationContext) {
          this.bundleContext = bundleContext;
          this.blueprintContainer = blueprintContainer;
          this.applicationContext = applicationContext;
      }
  
      @Override
      public void process(ComponentDefinitionRegistry componentDefinitionRegistry) {
          applicationContext.refresh();
      }
  
      @Override
      public Object beforeInit(Object o, String s, BeanCreator beanCreator, BeanMetadata beanMetadata) {
          if (beanMetadata instanceof SpringMetadata || beanMetadata == null) {
              return o;
          }
          if (o instanceof Aware) {
              if (o instanceof BeanNameAware) {
                  ((BeanNameAware) o).setBeanName(s);
              }
              if (o instanceof BeanClassLoaderAware) {
                  ClassLoader cl = bundleContext.getBundle().adapt(BundleWiring.class).getClassLoader();
                  ((BeanClassLoaderAware) o).setBeanClassLoader(cl);
              }
              if (o instanceof BeanFactoryAware) {
                  ((BeanFactoryAware) o).setBeanFactory(applicationContext.getBeanFactory());
              }
          }
          return applicationContext.getBeanFactory().applyBeanPostProcessorsBeforeInitialization(o, s);
      }
  
      @Override
      public Object afterInit(Object o, String s, BeanCreator beanCreator, BeanMetadata beanMetadata) {
          return applicationContext.getBeanFactory().applyBeanPostProcessorsAfterInitialization(o, s);
      }
  
      @Override
      public void beforeDestroy(Object o, String s) {
      }
  
      @Override
      public void afterDestroy(Object o, String s) {
      }
  
      private <T> List<T> getProcessors(Class<T> type) {
          List<T> processors = new ArrayList<T>();
          if (!creatingProcessor) {
              creatingProcessor = true;
              for (BeanMetadata bean : blueprintContainer.getMetadata(BeanMetadata.class)) {
                  Class clazz = null;
                  if (bean instanceof ExtendedBeanMetadata) {
                      clazz = ((ExtendedBeanMetadata) bean).getRuntimeClass();
                  }
                  if (clazz == null && bean.getClassName() != null) {
                      try {
                          clazz = bundleContext.getBundle().loadClass(bean.getClassName());
                      } catch (ClassNotFoundException e) {
                      }
                  }
                  if (clazz == null) {
                      continue;
                  }
                  if (type.isAssignableFrom(clazz)) {
                      Object p = blueprintContainer.getComponentInstance(bean.getId());
                      processors.add(type.cast(p));
                  }
              }
              creatingProcessor = false;
          }
          return processors;
      }
  
  }
  