graph_data_algorithms.php

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<?php

      /*
      *     This source code is a part of the Ultimix Project. 
      *     It is distributed under BSD license. All other third side source code (like tinyMCE) is distributed under 
      *     it's own license wich could be found from the corresponding files or sources. 
      *     This source code is provided "as is" without any warranties or garanties.
      *
      *     Have a nice day!
      *
      *     @url http://ultimix.sorceforge.net
      *
      *     @author Alexey "gdever" Dodonov
      */

      class graph_data_algorithms_1_0_0{
      
            var                           $GraphDataAccess = false;
            var                           $Security = false;
            var                           $SecurityParser = false;
            
            function                __construct()
            {
                  try
                  {
                        $this->GraphDataAccess = get_package( 'graph::graph_data::graph_data_access' , 'last' , __FILE__ );
                        $this->Security = get_package( 'security' , 'last' , __FILE__ );
                        $this->SecurityParser = get_package( 'security::security_parser' , 'last' , __FILE__ );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }

            function                get_abscissa_range( $UserId , $GraphType )
            {
                  try
                  {
                        $UserId = $this->Security->get( $UserId , 'integer' );
                        $GraphType = $this->Security->get( $GraphType , 'integer' );

                        $Records = $this->GraphDataAccess->unsafe_select( 
                              "author = $UserId AND graph_type = $GraphType" , 
                              "MIN( abscissa ) AS `from` , MAX( abscissa ) AS `to`"
                        );

                        if( isset( $Records[ 0 ] ) === false || get_field( $Records[ 0 ] , 'from' ) == null )
                        {
                              return( false );
                        }

                        return(
                              array( 'from' => get_field( $Records[ 0 ] , 'from' ) , 'to' => get_field( $Records[ 0 ] , 'to' ) )
                        );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                get_data_for_range( $UserId , $GraphType , $AbscissaFrom , $AbscissaTo )
            {
                  try
                  {
                        $UserId = $this->Security->get( $UserId , 'integer' );
                        $GraphType = $this->Security->get( $GraphType , 'integer' );
                        $AbscissaFrom = $this->Security->get( $AbscissaFrom , 'integer' );
                        $AbscissaTo = $this->Security->get( $AbscissaTo , 'integer' );

                        $Records = $this->GraphDataAccess->unsafe_select( 
                              "author = $UserId AND graph_type = $GraphType ".
                              "AND abscissa >= $AbscissaFrom AND abscissa <= $AbscissaTo ORDER BY abscissa ASC"
                        );

                        return( $Records );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function          get_abscissa_for_ordinatus( $DataX ,$DataY , $Ordinatus )
            {
                  try
                  {
                        foreach( $DataY as $i => $Y )
                        {
                              if( $Y == $Ordinatus )
                              {
                                    return( $DataX[ $i ] );
                              }
                        }
                        
                        throw( new Exception( 'Abscissa was not found' ) );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
      }

?>