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  1. <?php
  2.  
  3. /*
  4.  * OIDplus 2.0
  5.  * Copyright 2019 - 2023 Daniel Marschall, ViaThinkSoft
  6.  *
  7.  * Licensed under the Apache License, Version 2.0 (the "License");
  8.  * you may not use this file except in compliance with the License.
  9.  * You may obtain a copy of the License at
  10.  *
  11.  *     http://www.apache.org/licenses/LICENSE-2.0
  12.  *
  13.  * Unless required by applicable law or agreed to in writing, software
  14.  * distributed under the License is distributed on an "AS IS" BASIS,
  15.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16.  * See the License for the specific language governing permissions and
  17.  * limitations under the License.
  18.  */
  19.  
  20. namespace ViaThinkSoft\OIDplus;
  21.  
  22. // phpcs:disable PSR1.Files.SideEffects
  23. \defined('INSIDE_OIDPLUS') or die;
  24. // phpcs:enable PSR1.Files.SideEffects
  25.  
  26. class OIDplusQueryResultPDO extends OIDplusQueryResult {
  27.         /**
  28.          * @var bool
  29.          */
  30.         protected $no_resultset;
  31.  
  32.         /**
  33.          * @var mixed
  34.          */
  35.         protected $res;
  36.  
  37.         /**
  38.          * @param mixed $res
  39.          */
  40.         public function __construct($res) {
  41.                 $this->no_resultset = is_bool($res);
  42.  
  43.                 if (!$this->no_resultset) {
  44.                         $this->res = $res;
  45.  
  46.                         // This way we can simulate MARS (Multiple Active Result Sets) so that the test case "Simultanous prepared statements" works
  47.                         $this->prefetchAll();
  48.                 }
  49.         }
  50.  
  51.         /**
  52.          *
  53.          */
  54.         public function __destruct() {
  55.                 if ($this->res) {
  56.                         $this->res->closeCursor();
  57.                         $this->res = null;
  58.                 }
  59.         }
  60.  
  61.         /**
  62.          * @return bool
  63.          */
  64.         public function containsResultSet(): bool {
  65.                 return !$this->no_resultset;
  66.         }
  67.  
  68.         /**
  69.          * @return void
  70.          */
  71.         public function prefetchAll() {
  72.                 if (!is_null($this->prefetchedArray)) return;
  73.                 $this->prefetchedArray = $this->res->fetchAll();
  74.                 foreach ($this->prefetchedArray as &$row) {
  75.                         $this->fixFields($row);
  76.                 }
  77.                 unset($row);
  78.         }
  79.  
  80.         /**
  81.          * @return int
  82.          */
  83.         protected function do_num_rows(): int {
  84.                 $ret = $this->res->rowCount();
  85.  
  86.                 // -1 can happen when PDO is connected via ODBC that is running a driver that does not support num_rows (e.g. Microsoft Access)
  87.                 if ($ret === -1) {
  88.                         $this->prefetchAll();
  89.                         return count($this->prefetchedArray);
  90.                 }
  91.  
  92.                 return $ret;
  93.         }
  94.  
  95.         /**
  96.          * @return array|null
  97.          */
  98.         protected function do_fetch_array()/*: ?array*/ {
  99.                 $ret = $this->res->fetch(\PDO::FETCH_ASSOC);
  100.                 if ($ret === false) $ret = null;
  101.                 return $ret;
  102.         }
  103.  
  104.         /**
  105.          * @return object|null
  106.          */
  107.         protected function do_fetch_object()/*: ?object*/ {
  108.                 $ret = $this->res->fetch(\PDO::FETCH_OBJ);
  109.                 if ($ret === false) $ret = null;
  110.                 return $ret;
  111.         }
  112. }
  113.