/**
    * This file Copyright (c) 2003-2016 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.cms.util;
  
  import info.magnolia.cms.core.Content;
  import info.magnolia.cms.core.HierarchyManager;
  import info.magnolia.cms.core.NodeData;
  import info.magnolia.context.MgnlContext;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.jcr.RepositoryException;
  import java.io.Serializable;
  
  
  /**
   * Stores an uuid and will re-fetch the node in {@link #getWrappedContent()} if the session is closed.
   */
  public class LazyContentWrapper extends ContentWrapper implements Serializable {
      private static final Logger log = LoggerFactory.getLogger(LazyContentWrapper.class);
  
      private String repository;
  
      private String uuid;
  
      private transient Content node;
  
      public LazyContentWrapper(String repository, String uuid) {
          this.setRepository(repository);
          this.setUuid(uuid);
      }
  
      public LazyContentWrapper(Content node) {
          try {
              this.setRepository(node.getWorkspace().getName());
          } catch (RepositoryException e) {
              log.error("can't read repository name from wrapping node", e);
          }
          this.setUuid(node.getUUID());
          this.node = node;
      }
  
      @Override
      public synchronized Content getWrappedContent() {
          try {
              if (node == null || !node.getJCRNode().getSession().isLive()) {
                  node = getHierarchyManager().getContentByUUID(getUuid());
              }
          } catch (RepositoryException e) {
              log.error("can't reinitialize node {}", getUuid(), e);
          }
          return node;
      }
  
      @Override
      public HierarchyManager getHierarchyManager() {
          return MgnlContext.getSystemContext().getHierarchyManager(getRepository());
      }
  
      @Override
      public NodeData wrap(NodeData nodeData) {
          return new LazyNodeDataWrapper(nodeData);
      }
  
      protected void setUuid(String uuid) {
          this.uuid = uuid;
      }
  
     protected String getUuid() {
         return uuid;
     }
 
     protected void setRepository(String repository) {
         this.repository = repository;
     }
 
     protected String getRepository() {
         return repository;
     }
 
 }