/*
    * Copyright (c) 2002-2022, City of 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.portal.business.datastore;
  
  import fr.paris.lutece.util.sql.DAOUtil;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * This class provides Data Access methods for Entity objects
   */
  public final class DataEntityDAO implements IDataEntityDAO
  {
      // Constants
      private static final String SQL_QUERY_SELECT = "SELECT entity_key, entity_value FROM core_datastore WHERE entity_key = ?";
      private static final String SQL_QUERY_INSERT = "INSERT INTO core_datastore ( entity_key, entity_value ) VALUES ( ?, ? ) ";
      private static final String SQL_QUERY_DELETE = "DELETE FROM core_datastore WHERE entity_key = ? ";
      private static final String SQL_QUERY_UPDATE = "UPDATE core_datastore SET entity_value = ? WHERE entity_key = ?";
      private static final String SQL_QUERY_SELECTALL = "SELECT entity_key, entity_value FROM core_datastore";
      private static final String SQL_QUERY_SELECTBYPREFIX = "SELECT entity_key, entity_value FROM core_datastore WHERE entity_key LIKE ?";
  
      /**
       * Insert a new record in the table.
       * 
       * @param entity
       *            instance of the Entity object to insert
       */
      @Override
      public void insert( DataEntity entity )
      {
          try ( DAOUtil/DAOUtil.html#DAOUtil">DAOUtil daoUtil = new DAOUtil( SQL_QUERY_INSERT ) )
          {
  
              daoUtil.setString( 1, entity.getKey( ) );
              daoUtil.setString( 2, entity.getValue( ) );
  
              daoUtil.executeUpdate( );
          }
      }
  
      /**
       * Load the data of the entity from the table
       * 
       * @param strKey
       *            The identifier of the entity
       * @return the instance of the Entity
       */
      @Override
      public DataEntity load( String strKey )
      {
          DataEntity entity = null;
          try ( DAOUtil/DAOUtil.html#DAOUtil">DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECT ) )
          {
              daoUtil.setString( 1, strKey );
              daoUtil.executeQuery( );
  
              if ( daoUtil.next( ) )
              {
                  entity = new DataEntity( );
  
                  entity.setKey( daoUtil.getString( 1 ) );
                  entity.setValue( daoUtil.getString( 2 ) );
              }
  
          }
  
          return entity;
     }
 
     /**
      * Delete a record from the table
      * 
      * @param strKey
      *            The identifier of the entity
      */
     @Override
     public void delete( String strKey )
     {
         try ( DAOUtil/DAOUtil.html#DAOUtil">DAOUtil daoUtil = new DAOUtil( SQL_QUERY_DELETE ) )
         {
             daoUtil.setString( 1, strKey );
             daoUtil.executeUpdate( );
         }
     }
 
     /**
      * Update the record in the table
      * 
      * @param entity
      *            The reference of the entity
      */
     @Override
     public void store( DataEntity entity )
     {
         try ( DAOUtil/DAOUtil.html#DAOUtil">DAOUtil daoUtil = new DAOUtil( SQL_QUERY_UPDATE ) )
         {
 
             daoUtil.setString( 1, entity.getValue( ) );
             daoUtil.setString( 2, entity.getKey( ) );
 
             daoUtil.executeUpdate( );
         }
     }
 
     /**
      * Load the data of all the entitys and returns them as a List
      * 
      * @return The List which contains the data of all the entitys
      */
     @Override
     public List<DataEntity> selectEntitiesList( )
     {
         List<DataEntity> entityList = new ArrayList<>( );
         try ( DAOUtil/DAOUtil.html#DAOUtil">DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECTALL ) )
         {
             daoUtil.executeQuery( );
 
             while ( daoUtil.next( ) )
             {
                 DataEntityiness/datastore/DataEntity.html#DataEntity">DataEntity entity = new DataEntity( );
 
                 entity.setKey( daoUtil.getString( 1 ) );
                 entity.setValue( daoUtil.getString( 2 ) );
 
                 entityList.add( entity );
             }
 
         }
 
         return entityList;
     }
 
     @Override
     public List<DataEntity> selectEntitiesByPrefix( String strPrefix )
     {
         List<DataEntity> entityList = new ArrayList<>( );
         try ( DAOUtil/DAOUtil.html#DAOUtil">DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECTBYPREFIX ) )
         {
             daoUtil.setString( 1, strPrefix + "%" );
             daoUtil.executeQuery( );
 
             while ( daoUtil.next( ) )
             {
                 DataEntityiness/datastore/DataEntity.html#DataEntity">DataEntity entity = new DataEntity( );
 
                 entity.setKey( daoUtil.getString( 1 ) );
                 entity.setValue( daoUtil.getString( 2 ) );
 
                 entityList.add( entity );
             }
 
         }
         return entityList;
     }
 }