[tracker] libtracker-data: Recreate database if it is empty

[Jürg Billeter <juergbi src gnome org>]

commit e8759ea791b00217ef10373af7b4101542b0e51e
Author: Jürg Billeter <j bitron ch>
Date:   Tue Feb 8 11:59:01 2011 +0100

    libtracker-data: Recreate database if it is empty
    
    If tracker-store is terminated while initializing the database, it will
    abort on subsequent starts due to empty database. With this commit the
    database will be recreated instead.
    
    Fixes NB#225910.

 src/libtracker-data/tracker-db-manager.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/src/libtracker-data/tracker-db-manager.c b/src/libtracker-data/tracker-db-manager.c
index 920148b..bbf9aee 100644
--- a/src/libtracker-data/tracker-db-manager.c
+++ b/src/libtracker-data/tracker-db-manager.c
@@ -1076,6 +1076,19 @@ tracker_db_manager_init (TrackerDBManagerFlags   flags,
 					}
 				}
 
+				/* ensure that database has been initialized by an earlier tracker-store start
+				   by checking whether Resource table exists */
+				stmt = tracker_db_interface_create_statement (dbs[i].iface, TRACKER_DB_STATEMENT_CACHE_TYPE_NONE,
+				                                              &internal_error,
+				                                              "SELECT 1 FROM Resource");
+				if (internal_error != NULL) {
+					must_recreate = TRUE;
+					g_error_free (internal_error);
+					internal_error = NULL;
+				} else {
+					g_object_unref (stmt);
+				}
+
 				tracker_db_interface_set_busy_handler (dbs[i].iface, NULL, NULL, NULL);
 			}
 		}