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  1. <?php
  2.  
  3. /*
  4.  * OIDplus 2.0
  5.  * Copyright 2019 - 2021 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 OIDplusSqlSlangPluginPgSQL extends OIDplusSqlSlangPlugin {
  23.  
  24.         public static function id(): string {
  25.                 return 'pgsql';
  26.         }
  27.  
  28.         public function natOrder($fieldname, $order='asc'): string {
  29.  
  30.                 $order = strtolower($order);
  31.                 if (($order != 'asc') && ($order != 'desc')) {
  32.                         throw new OIDplusException(_L('Invalid order "%1" (needs to be "asc" or "desc")',$order));
  33.                 }
  34.  
  35.                 $out = array();
  36.  
  37.                 $max_arc_len = OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE') > 131072 ? 131072 : OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE'); // Limit of the "numeric()" type
  38.  
  39.                 // 1. Sort by namespace (oid, guid, ...)
  40.                 $out[] = "SPLIT_PART($fieldname, ':', 1) $order";
  41.  
  42.                 // 2. Only if namespace is 'oid:': Sort OID as integer array
  43.                 $out[] = "STRING_TO_ARRAY(SPLIT_PART($fieldname, 'oid:', 2), '.')::numeric($max_arc_len)[] $order";
  44.  
  45.                 // 3. Otherwise order by ID
  46.                 $out[] = "$fieldname $order";
  47.  
  48.                 return implode(', ', $out);
  49.  
  50.         }
  51.  
  52.         public function sqlDate(): string {
  53.                 return 'now()';
  54.         }
  55.  
  56.         public function detect(OIDplusDatabaseConnection $db): bool {
  57.                 try {
  58.                         $vers = $db->query("select version() as dbms_version")->fetch_object()->dbms_version;
  59.                         $vers = strtolower($vers);
  60.                         return strpos($vers, 'postgresql') !== false;
  61.                 } catch (\Exception $e) {
  62.                         return false;
  63.                 }
  64.         }
  65.  
  66.         public function insert_id(OIDplusDatabaseConnection $db): int {
  67.                 $res = $db->query("SELECT LASTVAL() AS ID");
  68.                 $row = $res->fetch_array();
  69.                 return (int)$row['ID'];
  70.         }
  71.  
  72.         public function setupSetTablePrefix($cont, $table, $prefix): string {
  73.                 $cont = str_replace('"'.$table.'"', '"'.$prefix.$table.'"', $cont);
  74.                 $cont = str_replace('"index_'.$table, '"index_'.$prefix.$table, $cont);
  75.                 return $cont;
  76.         }
  77.  
  78.         public function setupCreateDbIfNotExists($database): string {
  79.                 return "-- CREATE DATABASE $database;\n\n";
  80.         }
  81.  
  82.         public function setupUseDatabase($database): string {
  83.                 return "-- \connect $database;\n\n";
  84.         }
  85.  
  86.         public function isNullFunction($expr1, $expr2): string {
  87.                 return "coalesce($expr1, $expr2)";
  88.         }
  89.  
  90.         public function filterQuery($sql): string {
  91.                 return $sql;
  92.         }
  93.  
  94.         public function getSQLBool($bool): string {
  95.                 return $bool ? '1' : '0';
  96.         }
  97.  
  98.         public function escapeString($str): string {
  99.                 return str_replace("'", "''", $str);
  100.         }
  101. }
  102.