/**
    * This file Copyright (c) 2010-2011 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.module.blossom.context;
  
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.springframework.beans.factory.BeanFactory;
  import org.springframework.beans.factory.BeanFactoryAware;
  import org.springframework.beans.factory.BeanNameAware;
  import org.springframework.beans.factory.DisposableBean;
  import org.springframework.beans.factory.FactoryBean;
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory;
  
  import info.magnolia.cms.util.ContentUtil;
  import info.magnolia.content2bean.Content2BeanException;
  import info.magnolia.content2bean.Content2BeanUtil;
  import info.magnolia.context.SystemContext;
  import info.magnolia.module.blossom.content2bean.SpringContent2BeanTransformer;
  import info.magnolia.module.blossom.support.BeanFactoryUtils;
  import info.magnolia.objectfactory.Components;
  import info.magnolia.repository.RepositoryConstants;
  
  /**
   * BeanFactory that creates a bean and populates its properties with values from the repository.
   *
   * @since 1.2
   */
  public class ConfiguredBeanFactoryBean implements FactoryBean, InitializingBean, DisposableBean, BeanNameAware, BeanFactoryAware {
  
      private static final String DEFAULT_WORKSPACE = RepositoryConstants.CONFIG;
  
      private AbstractAutowireCapableBeanFactory beanFactory;
      private String beanName;
      private boolean initialized = false;
      private Class<?> targetClass;
      private Object instance;
      private Class<?> defaultClass;
  
      private String workspace = DEFAULT_WORKSPACE;
      private String path;
  
      @Deprecated
      public String getRepository() {
          return workspace;
      }
  
      @Deprecated
      public void setRepository(String repository) {
          this.workspace = repository;
      }
  
      public String getWorkspace() {
          return workspace;
      }
  
      public void setWorkspace(String workspace) {
          this.workspace = workspace;
      }
  
      public String getPath() {
          return path;
      }
  
      public void setPath(String path) {
          this.path = path;
      }
 
     public Class<?> getDefaultClass() {
         return defaultClass;
     }
 
     public void setDefaultClass(Class<?> defaultClass) {
         this.defaultClass = defaultClass;
     }
 
     @Override
     public Object getObject() throws Exception {
         if (!initialized) {
             initialized = true;
             instance = createInstance();
         }
         return instance;
     }
 
     @Override
     public Class getObjectType() {
         if (instance != null) {
             return instance.getClass();
         }
         if (targetClass != null) {
             return targetClass;
         }
         return defaultClass;
     }
 
     @Override
     public boolean isSingleton() {
         return true;
     }
 
     @Override
     public void setBeanName(String name) {
         this.beanName = name;
     }
 
     @Override
     public void setBeanFactory(BeanFactory beanFactory) {
         this.beanFactory = (AbstractAutowireCapableBeanFactory) beanFactory;
     }
 
     @Override
     public void destroy() throws Exception {
         destroyInstance();
     }
 
     @Override
     public void afterPropertiesSet() throws Exception {
         Node node = getConfigurationNode();
         if (node.hasProperty("class")) {
             targetClass = Class.forName(node.getProperty("class").getString());
         }
     }
 
     protected Object createInstance() throws Exception {
         Node node = getConfigurationNode();
         return transformNode(node);
     }
 
     protected void destroyInstance() {
         if (instance != null) {
             BeanFactoryUtils.destroyBean(instance, beanName, beanFactory);
         }
     }
 
     protected Object transformNode(Node node) throws Content2BeanException {
         SpringContent2BeanTransformer transformer = new SpringContent2BeanTransformer(beanFactory);
         transformer.setTopLevelBeanName(beanName);
         transformer.setDefaultClass(defaultClass);
         return Content2BeanUtil.toBean(ContentUtil.asContent(node), true, transformer);
     }
 
     protected Node getConfigurationNode() throws RepositoryException {
         return Components.getComponent(SystemContext.class).getJCRSession(workspace).getNode(path);
     }
 }