Add repair step to fix SQLite autoincrement

Force Doctrine to generate alter table SQL statements for SQLite to make
sure the code from OCSqlitePlatform is triggered.

1 files changed, 85 insertions, 0 deletions

diff --git a/lib/repair/sqliteautoincrement.php b/lib/repair/sqliteautoincrement.php
new file mode 100644
index 00000000000..79b1fe7870e
--- /dev/null
+++ b/lib/repair/sqliteautoincrement.php
@@ -0,0 +1,85 @@
+<?php
+/**
+ * Copyright (c) 2015 Vincent Petry <pvince81@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Repair;
+
+use Doctrine\DBAL\Platforms\SqlitePlatform;
+use Doctrine\DBAL\Schema\SchemaException;
+use Doctrine\DBAL\Schema\SchemaDiff;
+use Doctrine\DBAL\Schema\TableDiff;
+use Doctrine\DBAL\Schema\ColumnDiff;
+use OC\Hooks\BasicEmitter;
+
+/**
+ * Fixes Sqlite autoincrement by forcing the SQLite table schemas to be
+ * altered in order to retrigger SQL schema generation through OCSqlitePlatform.
+ */
+class SqliteAutoincrement extends BasicEmitter implements \OC\RepairStep {
+	/**
+	 * @var \OC\DB\Connection
+	 */
+	protected $connection;
+
+	/**
+	 * @param \OC\DB\Connection $connection
+	 */
+	public function __construct($connection) {
+		$this->connection = $connection;
+	}
+
+	public function getName() {
+		return 'Repair SQLite autoincrement';
+	}
+
+	/**
+	 * Fix mime types
+	 */
+	public function run() {
+		if (!$this->connection->getDatabasePlatform() instanceof SqlitePlatform) {
+			return;
+		}
+
+		$sourceSchema = $this->connection->getSchemaManager()->createSchema();
+
+		$schemaDiff = new SchemaDiff();
+
+		foreach ($sourceSchema->getTables() as $tableSchema) {
+			$primaryKey = $tableSchema->getPrimaryKey();
+			if (!$primaryKey) {
+				continue;
+			}
+
+			$columnNames = $primaryKey->getColumns();
+
+			// add a column diff for every primary key column,
+			// but do not actually change anything, this will
+			// force the generation of SQL statements to alter
+			// those tables, which will then trigger the
+			// specific SQL code from OCSqlitePlatform
+			try {
+				$tableDiff = new TableDiff($tableSchema->getName());
+				$tableDiff->fromTable = $tableSchema;
+				foreach ($columnNames as $columnName) {
+					$columnSchema = $tableSchema->getColumn($columnName);
+					$columnDiff = new ColumnDiff($columnSchema->getName(), $columnSchema);
+					$tableDiff->changedColumns[] = $columnDiff;
+					$schemaDiff->changedTables[] = $tableDiff;
+				}
+			} catch (SchemaException $e) {
+				// ignore
+			}
+		}
+
+		$this->connection->beginTransaction();
+		foreach ($schemaDiff->toSql($this->connection->getDatabasePlatform()) as $sql) {
+			$this->connection->query($sql);
+		}
+		$this->connection->commit();
+	}
+}
+