initial commit

exp/Plugin/DebugKit/Model/ToolbarAccess.php

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+<?php
+/**
+ * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
+ * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ *
+ * Licensed under The MIT License
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ * @link          http://cakephp.org CakePHP(tm) Project
+ * @since         DebugKit 1.3
+ * @license       http://www.opensource.org/licenses/mit-license.php MIT License
+ */
+
+App::uses('ConnectionManager', 'Model');
+
+/**
+ * Class ToolbarAccess
+ *
+ * Contains logic for accessing DebugKit specific information.
+ */
+class ToolbarAccess extends Object {
+
+/**
+ * Runs an explain on a query if the connection supports EXPLAIN.
+ * currently only PostgreSQL and MySQL are supported.
+ *
+ * @param string $connection Connection name
+ * @param string $query SQL query to explain / find query plan for.
+ * @return array Array of explain information or empty array if connection is unsupported.
+ */
+	public function explainQuery($connection, $query) {
+		$db = ConnectionManager::getDataSource($connection);
+		$datasource = $db->config['datasource'];
+
+		$return = array();
+		if (preg_match('/(Mysql|Postgres)$/', $datasource)) {
+			$explained = $db->query('EXPLAIN ' . $query);
+			if (preg_match('/Postgres$/', $datasource)) {
+				$queryPlan = array();
+				foreach ($explained as $postgreValue) {
+					$queryPlan[] = array($postgreValue[0]['QUERY PLAN']);
+				}
+				$return = array_merge(array(array('')), $queryPlan);
+			} else {
+				$keys = array_keys($explained[0][0]);
+				foreach ($explained as $mysqlValue) {
+					$queryPlan[] = array_values($mysqlValue[0]);
+				}
+				$return = array_merge(array($keys), $queryPlan);
+			}
+		}
+		return $return;
+	}
+
+}