/*
    * 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.myfaces.config.annotation;
  
  import java.lang.reflect.InvocationTargetException;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import javax.faces.context.ExternalContext;
  import javax.naming.NamingException;
  import javax.servlet.ServletContext;
  
  import org.apache.myfaces.shared.util.ClassUtils;
  
  public class TomcatAnnotationLifecycleProvider implements 
      DiscoverableLifecycleProvider, LifecycleProvider2
  {
      //private static Log log = LogFactory.getLog(TomcatAnnotationLifecycleProvider.class);
      private static Logger log = Logger.getLogger(TomcatAnnotationLifecycleProvider.class.getName());
  
      private ExternalContext externalContext;
      private org.apache.AnnotationProcessor annotationProcessor;
  
      public TomcatAnnotationLifecycleProvider(ExternalContext externalContext)
      {
          this.externalContext = externalContext;
      }
  
  
      public Object newInstance(String className)
              throws InstantiationException, IllegalAccessException, InvocationTargetException,
              NamingException, ClassNotFoundException
      {
          Class<?> clazz = ClassUtils.classForName(className);
          if (log.isLoggable(Level.FINEST))
          {
              log.finest("Creating instance of " + className);
          }
          Object object = clazz.newInstance();
          annotationProcessor.processAnnotations(object);
          //annotationProcessor.postConstruct(object);
          return object;
      }
  
  
      public void destroyInstance(Object o) throws IllegalAccessException, InvocationTargetException
      {
          if (log.isLoggable(Level.FINEST))
          {
              log.info("Destroy instance of " + o.getClass().getName());
          }
          annotationProcessor.preDestroy(o);
      }
  
      public boolean isAvailable()
      {
          try
          {
              annotationProcessor =  (org.apache.AnnotationProcessor) ((ServletContext)
                       externalContext.getContext()).getAttribute(org.apache.AnnotationProcessor.class.getName());
              return annotationProcessor != null;
          }
          catch (Throwable e)
          {
              // ignore
          }
          return false;
      }
  
  
      public void postConstruct(Object o) throws IllegalAccessException,
              InvocationTargetException
      {
          annotationProcessor.postConstruct(o);
      }
  
  }