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Differences Between: [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Oracle specific recordset.
  19   *
  20   * @package    core_dml
  21   * @copyright  2008 Petr Skoda (http://skodak.org)
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  require_once (__DIR__.'/moodle_recordset.php');
  28  
  29  class oci_native_moodle_recordset extends moodle_recordset {
  30  
  31      protected $stmt;
  32      protected $current;
  33  
  34      public function __construct($stmt) {
  35          $this->stmt  = $stmt;
  36          $this->current = $this->fetch_next();
  37      }
  38  
  39      public function __destruct() {
  40          $this->close();
  41      }
  42  
  43      private function fetch_next() {
  44          if (!$this->stmt) {
  45              return false;
  46          }
  47          if (!$row = oci_fetch_array($this->stmt, OCI_ASSOC + OCI_RETURN_NULLS + OCI_RETURN_LOBS)) {
  48              oci_free_statement($this->stmt);
  49              $this->stmt = null;
  50              return false;
  51          }
  52  
  53          $row = array_change_key_case($row, CASE_LOWER);
  54          unset($row['oracle_rownum']);
  55          array_walk($row, array('oci_native_moodle_database', 'onespace2empty'));
  56          return $row;
  57      }
  58  
  59      public function current() {
  60          return (object)$this->current;
  61      }
  62  
  63      public function key() {
  64          // return first column value as key
  65          if (!$this->current) {
  66              return false;
  67          }
  68          $key = reset($this->current);
  69          return $key;
  70      }
  71  
  72      public function next() {
  73          $this->current = $this->fetch_next();
  74      }
  75  
  76      public function valid() {
  77          return !empty($this->current);
  78      }
  79  
  80      public function close() {
  81          if ($this->stmt) {
  82              oci_free_statement($this->stmt);
  83              $this->stmt  = null;
  84          }
  85          $this->current = null;
  86      }
  87  }