/*
    * Copyright (c) 2002-2014, 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.util.pool.service;
  
  import org.apache.log4j.Logger;
  
  import java.sql.Connection;
  import java.sql.SQLException;
  
  import java.util.Hashtable;
  
  import javax.naming.Context;
  import javax.naming.InitialContext;
  
  import javax.sql.DataSource;
  
  
  /**
   * This class provides a ConnectionService based on Tomcat
   */
  public class TomcatConnectionService implements ConnectionService
  {
      private DataSource _ds;
      private String _strPoolName;
      private Logger _logger;
  
      /**
       * {@inheritDoc}
       */
      public Connection getConnection(  )
      {
          Connection conn = null;
  
          try
          {
              if ( _ds != null )
              {
                  conn = _ds.getConnection(  );
  
                  if ( conn != null )
                  {
                      _logger.debug( "The connexion is get" );
                  }
              }
          }
          catch ( Exception e )
          {
              _logger.error( "Erreur when getting the connexion with the pool : " + getPoolName(  ), e );
          }
  
          return conn;
      }
  
      /**
       * {@inheritDoc}
       */
      public void freeConnection( Connection conn )
      {
          try
          {
              conn.close(  );
          }
          catch ( SQLException e )
          {
              _logger.error( "SQL error when releasing the connexion with the pool : " + getPoolName(  ), e );
          }
          catch ( Exception e )
          {
             _logger.error( "Error while releasing the connexion with the pool : " + getPoolName(  ), e );
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void init( Hashtable<String, String> htParamsConnectionPool )
     {
         try
         {
             String strDs = htParamsConnectionPool.get( getPoolName(  ) + ".ds" );
             Context ctx = new InitialContext(  );
 
             _ds = (DataSource) ctx.lookup( "java:comp/env/" + strDs );
         }
         catch ( Exception e )
         {
             _logger.error( "Error while initializing the pool " + getPoolName(  ), e );
         }
 
         _logger.info( "Initialization of the pool " + getPoolName(  ) );
     }
 
     /**
      * {@inheritDoc}
      */
     public void setPoolName( String strPoolName )
     {
         _strPoolName = strPoolName;
     }
 
     /**
      * {@inheritDoc}
      */
     public String getPoolName(  )
     {
         return _strPoolName;
     }
 
     /**
      * Sets the logger
      * @param logger The logger
      */
     public void setLogger( Logger logger )
     {
         _logger = logger;
     }
 
     /**
      * {@inheritDoc}
      */
     public Logger getLogger(  )
     {
         return _logger;
     }
 
     /**
      * {@inheritDoc}
      */
     public void release(  )
     {
         // Nothing to do
     }
 
     /**
      * {@inheritDoc}
      */
     public int getCurrentConnections(  )
     {
         return ConnectionService.INFO_NOT_AVAILABLE;
     }
 
     /**
      * {@inheritDoc}
      */
     public int getMaxConnections(  )
     {
         return ConnectionService.INFO_NOT_AVAILABLE;
     }
 
     /**
      * {@inheritDoc }
      */
     public String getPoolProvider(  )
     {
         return "Tomcat";
     }
 
     /**
      * {@inheritDoc }
      */
     public DataSource getDataSource(  )
     {
         return _ds;
     }
 }