Do not rename primary key index when renaming table

When the migrator renames a table, for example for upgrade simulation,
it should not rename the primary key to avoid messing up with the diff
because the MySQL Doctrine code expects that index to always be called
"primary".

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/private/db/migrator.php b/lib/private/db/migrator.php
index 517be8399e8..8dbfabe443c 100644
--- a/lib/private/db/migrator.php
+++ b/lib/private/db/migrator.php
@@ -128,7 +128,13 @@ class Migrator {
 		$indexes = $table->getIndexes();
 		$newIndexes = array();
 		foreach ($indexes as $index) {
-			$indexName = 'oc_' . uniqid(); // avoid conflicts in index names
+			if ($index->isPrimary()) {
+				// do not rename primary key
+				$indexName = $index->getName();
+			} else {
+				// avoid conflicts in index names
+				$indexName = 'oc_' . uniqid();
+			}
 			$newIndexes[] = new Index($indexName, $index->getColumns(), $index->isUnique(), $index->isPrimary());
 		}