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msd2/tracking/piwik/plugins/ExamplePlugin/Updates/0.0.2.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+
+namespace Piwik\Plugins\ExamplePlugin\Updates;
+
+use Piwik\Updater;
+use Piwik\Updates as PiwikUpdates;
+use Piwik\Updater\Migration;
+use Piwik\Updater\Migration\Factory as MigrationFactory;
+
+/**
+ * Update for version 0.0.2.
+ */
+class Updates_0_0_2 extends PiwikUpdates
+{
+    /**
+     * @var MigrationFactory
+     */
+    private $migration;
+
+    public function __construct(MigrationFactory $factory)
+    {
+        $this->migration = $factory;
+    }
+
+    /**
+     * Return database migrations to be executed in this update.
+     *
+     * Database migrations should be defined here, instead of in `doUpdate()`, since this method is used
+     * in the `core:update` command when displaying the queries an update will run. If you execute
+     * migrations directly in `doUpdate()`, they won't be displayed to the user. Migrations will be executed in the
+     * order as positioned in the returned array.
+     *
+     * @param Updater $updater
+     * @return Migration\Db[]
+     */
+    public function getMigrations(Updater $updater)
+    {
+        // many different migrations are available to be used via $this->migration factory
+        $migration1 = $this->migration->db->changeColumnType('log_visit', 'example', 'BOOLEAN NOT NULL');
+        // you can also define custom SQL migrations. If you need to bind parameters, use `->boundSql()`
+        $migration2 = $this->migration->db->sql($sqlQuery = 'SELECT 1');
+
+        return array(
+            // $migration1,
+            // $migration2
+        );
+    }
+
+    /**
+     * Perform the incremental version update.
+     *
+     * This method should perform all updating logic. If you define queries in the `getMigrations()` method,
+     * you must call {@link Updater::executeMigrations()} here.
+     *
+     * @param Updater $updater
+     */
+    public function doUpdate(Updater $updater)
+    {
+        $updater->executeMigrations(__FILE__, $this->getMigrations($updater));
+    }
+}