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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 OIDplusQueryResultOci extends OIDplusQueryResult {
  27.         protected $no_resultset;
  28.         protected $res;
  29.  
  30.         public function __construct($res) {
  31.                 $this->no_resultset = is_bool($res);
  32.  
  33.                 if (!$this->no_resultset) {
  34.                         $this->res = $res;
  35.                 }
  36.         }
  37.  
  38.         public function __destruct() {
  39.                 if ($this->res) {
  40.                         oci_free_statement($this->res);
  41.                 }
  42.         }
  43.  
  44.         public function containsResultSet(): bool {
  45.                 return !$this->no_resultset;
  46.         }
  47.  
  48.         private $prefetchedArray = null;
  49.         private $countAlreadyFetched = 0;
  50.  
  51.         public function num_rows(): int {
  52.                 if (!is_null($this->prefetchedArray)) {
  53.                         return count($this->prefetchedArray) + $this->countAlreadyFetched;
  54.                 }
  55.  
  56.                 if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  57.  
  58.                 // This function does not return number of rows selected! For SELECT statements this function will return the number of rows, that were fetched to the buffer with oci_fetch*() functions.
  59.                 //return oci_num_rows($this->res);
  60.  
  61.                 $this->prefetchedArray = array();
  62.                 oci_fetch_all($this->res, $this->prefetchedArray, 0, -1, OCI_FETCHSTATEMENT_BY_ROW);
  63.                 return count($this->prefetchedArray) + $this->countAlreadyFetched;
  64.         }
  65.  
  66.         public function fetch_array()/*: ?array*/ {
  67.                 if (!is_null($this->prefetchedArray)) {
  68.                         $ret = array_shift($this->prefetchedArray);
  69.                 } else {
  70.                         if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  71.                         $ret = oci_fetch_array($this->res);
  72.                         if ($ret === false) $ret = null;
  73.                 }
  74.                 if ($ret) $this->countAlreadyFetched++;
  75.  
  76.                 // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case
  77.                 // We can't quote every single column throughout the whole program, so we use this workaround...
  78.                 if ($ret) {
  79.                         $keys = array_keys($ret);
  80.                         foreach($keys as $key) {
  81.                                 $ret[strtolower($key)]=$ret[$key];
  82.                                 $ret[strtoupper($key)]=$ret[$key];
  83.                         }
  84.                 }
  85.  
  86.                 return $ret;
  87.         }
  88.  
  89.         private static function array_to_stdobj($ary) {
  90.                 $obj = new \stdClass;
  91.                 foreach ($ary as $name => $val) {
  92.                         $obj->$name = $val;
  93.  
  94.                         // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case
  95.                         // We can't quote every single column throughout the whole program, so we use this workaround...
  96.                         $name = strtolower($name);
  97.                         $obj->$name = $val;
  98.                         $name = strtoupper($name);
  99.                         $obj->$name = $val;
  100.                 }
  101.                 return $obj;
  102.         }
  103.  
  104.         public function fetch_object()/*: ?object*/ {
  105.                 if (!is_null($this->prefetchedArray)) {
  106.                         $ary = array_shift($this->prefetchedArray);
  107.                         $ret = is_null($ary) ? null : self::array_to_stdobj($ary);
  108.                 } else {
  109.                         if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  110.                         $ret = oci_fetch_object($this->res);
  111.                         if ($ret === false) $ret = null;
  112.                 }
  113.                 if ($ret) $this->countAlreadyFetched++;
  114.  
  115.                 // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case
  116.                 // We can't quote every single column throughout the whole program, so we use this workaround...
  117.                 if ($ret) {
  118.                         foreach ($ret as $name => $val) {
  119.                                 $ret->{strtoupper($name)} = $val;
  120.                                 $ret->{strtolower($name)} = $val;
  121.                         }
  122.                 }
  123.  
  124.                 return $ret;
  125.         }
  126. }
  127.