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inc/querysubquery.class.php

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+<?php
+/**
+ * ---------------------------------------------------------------------
+ * GLPI - Gestionnaire Libre de Parc Informatique
+ * Copyright (C) 2015-2020 Teclib' and contributors.
+ *
+ * http://glpi-project.org
+ *
+ * based on GLPI - Gestionnaire Libre de Parc Informatique
+ * Copyright (C) 2003-2014 by the INDEPNET Development Team.
+ *
+ * ---------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of GLPI.
+ *
+ * GLPI is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GLPI is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GLPI. If not, see <http://www.gnu.org/licenses/>.
+ * ---------------------------------------------------------------------
+ */
+
+if (!defined('GLPI_ROOT')) {
+   die("Sorry. You can't access this file directly");
+}
+
+/**
+ *  Sub query class
+**/
+class QuerySubQuery extends AbstractQuery {
+   private $dbiterator;
+
+   /**
+    * Create a sub query
+    *
+    * @param array  $crit      Array of query criteria. Any valid DBmysqlIterator parameters are valid.
+    * @param string $alias     Alias for the whole subquery
+    */
+   public function __construct(array $crit, $alias = null) {
+      global $DB;
+
+      parent::__construct($alias);
+      if (empty($crit)) {
+         throw new \RuntimeException('Cannot build an empty subquery');
+      }
+
+      $this->dbiterator = new DBmysqlIterator($DB);
+      $this->dbiterator->buildQuery($crit);
+   }
+
+   /**
+    *
+    * Get SQL query
+    *
+    * @return string
+    */
+   public function getQuery() {
+      global $DB;
+
+      $sql = "(" . $this->dbiterator->getSql() . ")";
+
+      if ($this->alias !== null) {
+         $sql .= ' AS ' . $DB->quoteName($this->alias);
+      }
+      return $sql;
+   }
+}