/*
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.exoplatform.services.jcr.impl.storage.value.fs;

import org.exoplatform.commons.utils.ClassLoading;
import org.exoplatform.services.jcr.config.RepositoryConfigurationException;
import org.exoplatform.services.jcr.impl.storage.value.ValueDataResourceHolder;
import org.exoplatform.services.jcr.impl.storage.value.cas.ValueContentAddressStorage;
import org.exoplatform.services.jcr.impl.util.io.FileCleaner;

import java.io.IOException;
import java.util.Properties;

/**
 * Created by The eXo Platform SAS
 * 
 * @author <a href="mailto:peter.nedonosko@exoplatform.com.ua">Peter Nedonosko</a>
 * @version $Id: CASableTreeFileValueStorage.java 34801 2009-07-31 15:44:50Z dkatayev $
 */
public class CASableTreeFileValueStorage extends TreeFileValueStorage
{

   private ValueContentAddressStorage vcas;

   private String digestAlgo;

   /**
    * CASableTreeFileValueStorage constructor.
    */
   public CASableTreeFileValueStorage(FileCleaner fileCleaner)
   {
      super(fileCleaner);
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public void init(Properties props, ValueDataResourceHolder resources) throws IOException,
      RepositoryConfigurationException
   {
      super.init(props, resources);

      this.digestAlgo = props.getProperty(ValueContentAddressStorage.DIGEST_ALGO_PARAM);
      String vcasType = props.getProperty(ValueContentAddressStorage.VCAS_TYPE_PARAM);

      // get other vcas specific props and make VCAS
      try
      {
         vcas = (ValueContentAddressStorage)ClassLoading.forName(vcasType, this).newInstance();
      }
      catch (ExceptionInInitializerError e)
      {
         throw new RepositoryConfigurationException("VCAS Storage class load error " + e, e);
      }
      catch (SecurityException e)
      {
         throw new RepositoryConfigurationException("VCAS Storage class load error " + e, e);
      }
      catch (ClassNotFoundException e)
      {
         throw new RepositoryConfigurationException("VCAS Storage class load error " + e, e);
      }
      catch (InstantiationException e)
      {
         throw new RepositoryConfigurationException("VCAS Storage class load error " + e, e);
      }
      catch (IllegalAccessException e)
      {
         throw new RepositoryConfigurationException("VCAS Storage class load error " + e, e);
      }
      vcas.init(props);
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public FileIOChannel openIOChannel() throws IOException
   {
      return new CASableTreeFileIOChannel(rootDir, cleaner, getId(), resources, vcas, digestAlgo);
   }
}