[tracker] SPARQL: Fix multiple updates with WHERE clause in single query

[Jürg Billeter <juergbi src gnome org>]

commit 756d5bfea95afaf5ac318c31e5fd1512b77c5bac
Author: Jürg Billeter <j bitron ch>
Date:   Thu Sep 10 13:05:34 2009 +0200

    SPARQL: Fix multiple updates with WHERE clause in single query

 src/libtracker-data/libtracker-data.vapi      |    1 +
 src/libtracker-data/tracker-data-update.c     |    2 +-
 src/libtracker-data/tracker-data-update.h     |    1 +
 src/libtracker-data/tracker-sparql-query.vala |    4 ++++
 4 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/src/libtracker-data/libtracker-data.vapi b/src/libtracker-data/libtracker-data.vapi
index 0f39712..c04d30b 100644
--- a/src/libtracker-data/libtracker-data.vapi
+++ b/src/libtracker-data/libtracker-data.vapi
@@ -35,6 +35,7 @@ namespace Tracker {
 		public void insert_statement_with_uri (string subject, string predicate, string object) throws DataError;
 		public void insert_statement_with_string (string subject, string predicate, string object) throws DataError;
 		public void delete_resource_description (string uri);
+		public void update_buffer_flush ();
 	}
 }
 
diff --git a/src/libtracker-data/tracker-data-update.c b/src/libtracker-data/tracker-data-update.c
index 46f810e..f21d1fe 100644
--- a/src/libtracker-data/tracker-data-update.c
+++ b/src/libtracker-data/tracker-data-update.c
@@ -331,7 +331,7 @@ statement_bind_gvalue (TrackerDBStatement *stmt,
 	}
 }
 
-static void
+void
 tracker_data_update_buffer_flush (void)
 {
 	TrackerDBInterface             *iface;
diff --git a/src/libtracker-data/tracker-data-update.h b/src/libtracker-data/tracker-data-update.h
index bd713f5..9bd06e8 100644
--- a/src/libtracker-data/tracker-data-update.h
+++ b/src/libtracker-data/tracker-data-update.h
@@ -69,6 +69,7 @@ void     tracker_data_commit_transaction		(void);
 
 void     tracker_data_update_sparql			(const gchar       *update,
 							 GError	          **error);
+void     tracker_data_update_buffer_flush		(void);
 
 /* Volume handling */
 void tracker_data_update_enable_volume                  (const gchar         *udi,
diff --git a/src/libtracker-data/tracker-sparql-query.vala b/src/libtracker-data/tracker-sparql-query.vala
index b300c41..67db012 100644
--- a/src/libtracker-data/tracker-sparql-query.vala
+++ b/src/libtracker-data/tracker-sparql-query.vala
@@ -868,6 +868,10 @@ public class Tracker.SparqlQuery : Object {
 
 		// reset location to the end of the update
 		set_location (after_where);
+
+		// ensure possible WHERE clause in next part gets the correct results
+		Data.update_buffer_flush ();
+		bindings = null;
 	}
 
 	void execute_drop_graph () throws Error {