--- /dev/null
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle 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 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * tool_models plugin uninstallation.
+ *
+ * @package tool_models
+ * @copyright 2017 David Monllao {@link http://www.davidmonllao.com}
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+function xmldb_tool_models_uninstall() {
+ global $DB;
+
+ // Remove the models that are using this tool targets.
+ $targets = core_component::get_component_classes_in_namespace('tool_models', 'analytics\target');
+
+ $options = array();
+ foreach ($targets as $classname => $unused) {
+ $target = \core_analytics\manager::get_target($classname);
+ $options[] = '\\' . get_class($target);
+ }
+ list($sql, $params) = $DB->get_in_or_equal($options);
+ $models = $DB->get_records_select('analytics_models', "target $sql", $params);
+ foreach ($models as $modelobj) {
+ $model = new \core_analytics\model($modelobj);
+ $model->delete();
+ }
+}