phpmyadmin/libraries/gis/GIS_Factory.class.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Contains the factory class that handles the creation of geometric objects
   5  *
   6  * @package PhpMyAdmin-GIS
   7  */
   8
   9 if (! defined('PHPMYADMIN')) {
  10     exit;
  11 }
  12
  13 /**
  14  * Factory class that handles the creation of geometric objects.
  15  *
  16  * @package PhpMyAdmin-GIS
  17  */
  18 class PMA_GIS_Factory
  19 {
  20     /**
  21      * Returns the singleton instance of geometric class of the given type.
  22      *
  23      * @param string $type type of the geometric object
  24      *
  25      * @return PMA_GIS_Geometry the singleton instance of geometric class
  26      *                          of the given type
  27      *
  28      * @access public
  29      * @static
  30      */
  31     public static function factory($type)
  32     {
  33         include_once './libraries/gis/GIS_Geometry.class.php';
  34
  35         $type_lower = strtolower($type);
  36         $file = './libraries/gis/GIS_' . ucfirst($type_lower) . '.class.php';
  37         if (! PMA_isValid($type_lower, PMA_Util::getGISDatatypes())
  38             || ! file_exists($file)
  39         ) {
  40             return false;
  41         }
  42         if (include_once $file) {
  43             switch(strtoupper($type)) {
  44             case 'MULTIPOLYGON' :
  45                 return PMA_GIS_Multipolygon::singleton();
  46             case 'POLYGON' :
  47                 return PMA_GIS_Polygon::singleton();
  48             case 'MULTIPOINT' :
  49                 return PMA_GIS_Multipoint::singleton();
  50             case 'POINT' :
  51                 return PMA_GIS_Point::singleton();
  52             case 'MULTILINESTRING' :
  53                 return PMA_GIS_Multilinestring::singleton();
  54             case 'LINESTRING' :
  55                 return PMA_GIS_Linestring::singleton();
  56             case 'GEOMETRYCOLLECTION' :
  57                 return PMA_GIS_Geometrycollection::singleton();
  58             default :
  59                 return false;
  60             }
  61         } else {
  62             return false;
  63         }
  64     }
  65 }