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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->prefetchedArray = $this->res->fetchAll();
  48.                 }
  49.         }
  50.  
  51.         /**
  52.          *
  53.          */
  54.         public function __destruct() {
  55.                 if ($this->res) $this->res->closeCursor();
  56.         }
  57.  
  58.         /**
  59.          * @return bool
  60.          */
  61.         public function containsResultSet(): bool {
  62.                 return !$this->no_resultset;
  63.         }
  64.  
  65.         /**
  66.          * @return void
  67.          */
  68.         public function prefetchAll() {
  69.                 if (!is_null($this->prefetchedArray)) return;
  70.                 $this->prefetchedArray = $this->res->fetchAll();
  71.         }
  72.  
  73.         /**
  74.          * @return int
  75.          */
  76.         protected function do_num_rows(): int {
  77.                 $ret = $this->res->rowCount();
  78.  
  79.                 // -1 can happen when PDO is connected via ODBC that is running a driver that does not support num_rows (e.g. Microsoft Access)
  80.                 if ($ret === -1) {
  81.                         $this->prefetchAll();
  82.                         return count($this->prefetchedArray) + $this->countAlreadyFetched;
  83.                 }
  84.  
  85.                 return $ret;
  86.         }
  87.  
  88.         /**
  89.          * @return array|null
  90.          */
  91.         protected function do_fetch_array()/*: ?array*/ {
  92.                 $ret = $this->res->fetch(\PDO::FETCH_ASSOC);
  93.                 if ($ret === false) $ret = null;
  94.                 return $ret;
  95.         }
  96.  
  97.         /**
  98.          * @return object|null
  99.          */
  100.         protected function do_fetch_object()/*: ?object*/ {
  101.                 $ret = $this->res->fetch(\PDO::FETCH_OBJ);
  102.                 if ($ret === false) $ret = null;
  103.                 return $ret;
  104.         }
  105. }
  106.