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  1. <?php
  2.  
  3. /*
  4.  * OIDplus 2.0
  5.  * Copyright 2019 - 2022 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. class OIDplusQueryResultOci extends OIDplusQueryResult {
  23.         protected $no_resultset;
  24.         protected $res;
  25.  
  26.         public function __construct($res) {
  27.                 $this->no_resultset = is_bool($res);
  28.  
  29.                 if (!$this->no_resultset) {
  30.                         $this->res = $res;
  31.                 }
  32.         }
  33.  
  34.         public function __destruct() {
  35.                 if ($this->res) {
  36.                         oci_free_statement($this->res);
  37.                 }
  38.         }
  39.  
  40.         public function containsResultSet(): bool {
  41.                 return !$this->no_resultset;
  42.         }
  43.  
  44.         private $prefetchedArray = null;
  45.         private $countAlreadyFetched = 0;
  46.  
  47.         public function num_rows(): int {
  48.                 if (!is_null($this->prefetchedArray)) {
  49.                         return count($this->prefetchedArray) + $this->countAlreadyFetched;
  50.                 }
  51.  
  52.                 if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  53.  
  54.                 // 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.
  55.                 //return oci_num_rows($this->res);
  56.  
  57.                 $this->prefetchedArray = array();
  58.                 oci_fetch_all($this->res, $this->prefetchedArray, 0, -1, OCI_FETCHSTATEMENT_BY_ROW);
  59.                 return count($this->prefetchedArray) + $this->countAlreadyFetched;
  60.         }
  61.  
  62.         public function fetch_array()/*: ?array*/ {
  63.                 if (!is_null($this->prefetchedArray)) {
  64.                         $ret = array_shift($this->prefetchedArray);
  65.                 } else {
  66.                         if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  67.                         $ret = oci_fetch_array($this->res);
  68.                         if ($ret === false) $ret = null;
  69.                 }
  70.                 if ($ret) $this->countAlreadyFetched++;
  71.  
  72.                 // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case
  73.                 // We can't quote every single column throughout the whole program, so we use this workaround...
  74.                 if ($ret) {
  75.                         $keys = array_keys($ret);
  76.                         foreach($keys as $key) {
  77.                                 $ret[strtolower($key)]=$ret[$key];
  78.                                 $ret[strtoupper($key)]=$ret[$key];
  79.                         }
  80.                 }
  81.  
  82.                 return $ret;
  83.         }
  84.  
  85.         private static function array_to_stdobj($ary) {
  86.                 $obj = new \stdClass;
  87.                 foreach ($ary as $name => $val) {
  88.                         $obj->$name = $val;
  89.  
  90.                         // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case
  91.                         // We can't quote every single column throughout the whole program, so we use this workaround...
  92.                         $name = strtolower($name);
  93.                         $obj->$name = $val;
  94.                         $name = strtoupper($name);
  95.                         $obj->$name = $val;
  96.                 }
  97.                 return $obj;
  98.         }
  99.  
  100.         public function fetch_object()/*: ?object*/ {
  101.                 if (!is_null($this->prefetchedArray)) {
  102.                         $ary = array_shift($this->prefetchedArray);
  103.                         $ret = is_null($ary) ? null : self::array_to_stdobj($ary);
  104.                 } else {
  105.                         if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  106.                         $ret = oci_fetch_object($this->res);
  107.                         if ($ret === false) $ret = null;
  108.                 }
  109.                 if ($ret) $this->countAlreadyFetched++;
  110.  
  111.                 // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case
  112.                 // We can't quote every single column throughout the whole program, so we use this workaround...
  113.                 if ($ret) {
  114.                         foreach ($ret as $name => $val) {
  115.                                 $ret->{strtoupper($name)} = $val;
  116.                                 $ret->{strtolower($name)} = $val;
  117.                         }
  118.                 }
  119.  
  120.                 return $ret;
  121.         }
  122. }
  123.