/*
    * Copyright (c) 2002-2017, Mairie de Paris
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions
    * are met:
    *
    *  1. Redistributions of source code must retain the above copyright notice
   *     and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright notice
   *     and the following disclaimer in the documentation and/or other materials
   *     provided with the distribution.
   *
   *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
   *     contributors may be used to endorse or promote products derived from
   *     this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   * License 1.0
   */
  package fr.paris.lutece.plugins.directory.business;
  
  import fr.paris.lutece.portal.service.plugin.Plugin;
  import fr.paris.lutece.util.sql.DAOUtil;
  
  /**
   * This class provides Data Access methods for Field objects
   */
  public final class PhysicalFileDAO implements IPhysicalFileDAO
  {
      // Constants
      private static final String SQL_QUERY_NEW_PK = "SELECT max( id_physical_file ) FROM directory_physical_file";
      private static final String SQL_QUERY_FIND_BY_PRIMARY_KEY = "SELECT id_physical_file,file_value"
              + " FROM directory_physical_file WHERE id_physical_file = ?";
      private static final String SQL_QUERY_INSERT = "INSERT INTO directory_physical_file(id_physical_file,file_value)" + " VALUES(?,?)";
      private static final String SQL_QUERY_DELETE = "DELETE FROM directory_physical_file WHERE id_physical_file = ? ";
      private static final String SQL_QUERY_PURGE = "UPDATE directory_physical_file SET file_value = ? WHERE id_physical_file = ? ";
      private static final String SQL_QUERY_UPDATE = "UPDATE  directory_physical_file SET " + "id_physical_file=?,file_value=? WHERE id_physical_file = ?";
  
      /**
       * {@inheritDoc}
       */
      @Override
      public int newPrimaryKey( Plugin plugin )
      {
          DAOUtil daoUtil = new DAOUtil( SQL_QUERY_NEW_PK, plugin );
          daoUtil.executeQuery( );
  
          int nKey;
  
          if ( !daoUtil.next( ) )
          {
              // if the table is empty
              nKey = 1;
          }
  
          nKey = daoUtil.getInt( 1 ) + 1;
          daoUtil.free( );
  
          return nKey;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public synchronized int insert( PhysicalFile physicalFile, Plugin plugin )
      {
          physicalFile.setIdPhysicalFile( newPrimaryKey( plugin ) );
  
          DAOUtil daoUtil = new DAOUtil( SQL_QUERY_INSERT, plugin );
          daoUtil.setInt( 1, physicalFile.getIdPhysicalFile( ) );
          daoUtil.setBytes( 2, physicalFile.getValue( ) );
          daoUtil.executeUpdate( );
  
          daoUtil.free( );
  
          return physicalFile.getIdPhysicalFile( );
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public PhysicalFile load( int nId, Plugin plugin )
      {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_FIND_BY_PRIMARY_KEY, plugin );
         daoUtil.setInt( 1, nId );
         daoUtil.executeQuery( );
 
         PhysicalFile physicalFile = null;
 
         if ( daoUtil.next( ) )
         {
             physicalFile = new PhysicalFile( );
             physicalFile.setIdPhysicalFile( daoUtil.getInt( 1 ) );
             physicalFile.setValue( daoUtil.getBytes( 2 ) );
         }
 
         daoUtil.free( );
 
         return physicalFile;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void delete( int nIdPhysicalFile, Plugin plugin )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_DELETE, plugin );
         daoUtil.setInt( 1, nIdPhysicalFile );
         daoUtil.executeUpdate( );
         daoUtil.free( );
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void store( PhysicalFile physicalFile, Plugin plugin )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_UPDATE, plugin );
         daoUtil.setInt( 1, physicalFile.getIdPhysicalFile( ) );
         daoUtil.setBytes( 2, physicalFile.getValue( ) );
         daoUtil.setInt( 3, physicalFile.getIdPhysicalFile( ) );
         daoUtil.executeUpdate( );
         daoUtil.free( );
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void purge( PhysicalFile physicalFile, Plugin plugin )
     {
         int nIndex = 1;
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_PURGE, plugin );
         daoUtil.setBytes( nIndex++, new byte [ 0] );
         daoUtil.setInt( nIndex++, physicalFile.getIdPhysicalFile( ) );
         daoUtil.executeUpdate( );
         daoUtil.free( );
     }
 }