[tracker/miner-web-review] libtracker-data: STATEMENT_INSERT_ID journal replay performance improvement

[Adrien Bustany <abustany src gnome org>]

commit fefe188cb941c56df8b74a9ec4cb6d0229aa72ab
Author: Philip Van Hoof <philip codeminded be>
Date:   Mon Mar 15 14:19:12 2010 +0100

    libtracker-data: STATEMENT_INSERT_ID journal replay performance improvement

 src/libtracker-data/tracker-data-update.c |   56 ++++++++++++++++++++++++-----
 1 files changed, 47 insertions(+), 9 deletions(-)
---
diff --git a/src/libtracker-data/tracker-data-update.c b/src/libtracker-data/tracker-data-update.c
index 4553604..6402075 100644
--- a/src/libtracker-data/tracker-data-update.c
+++ b/src/libtracker-data/tracker-data-update.c
@@ -2490,18 +2490,57 @@ tracker_data_replay_journal (GHashTable *classes,
 			}
 
 		} else if (type == TRACKER_DB_JOURNAL_INSERT_STATEMENT_ID) {
+			TrackerClass *class = NULL;
+			TrackerProperty *property;
+
 			tracker_db_journal_reader_get_statement_id (&graph_id, &subject_id, &predicate_id, &object_id);
 
-			if (graph_id > 0) {
-				graph = query_resource_by_id (graph_id);
+			property = g_hash_table_lookup (properties, GINT_TO_POINTER (predicate_id));
+
+			if (property) {
+				if (tracker_property_get_data_type (property) != TRACKER_PROPERTY_TYPE_RESOURCE) {
+					g_warning ("Journal replay error: 'property with ID %d does not account URIs'", predicate_id);
+				} else {
+					resource_buffer_switch (NULL, graph_id, NULL, subject_id);
+
+					if (!rdf_type) {
+						rdf_type = tracker_ontologies_get_property_by_uri (RDF_PREFIX "type");
+					}
+
+					if (property == rdf_type) {
+						/* TODO: refactor the necessity of this lookup away */
+						const gchar *object = query_resource_by_id (object_id);
+
+						/* handle rdf:type statements specially to
+						   cope with inference and insert blank rows */
+
+						if (object) {
+							class = tracker_ontologies_get_class_by_uri (object);
+						}
+
+						if (class != NULL) {
+							cache_create_service_decomposed (class, NULL, graph_id, FALSE);
+						} else {
+							g_warning ("Journal replay error: 'class with ID %d not found in the ontology'", object_id);
+						}
+
+					} else {
+						GError *new_error = NULL;
+
+						/* add value to metadata database */
+						cache_set_metadata_decomposed (property, NULL, object_id, NULL, graph_id, &new_error);
+
+						if (new_error) {
+							tracker_data_update_buffer_clear ();
+							g_warning ("Journal replay error: '%s'", new_error->message);
+							g_error_free (new_error);
+						}
+					}
+				}
 			} else {
-				graph = NULL;
+				g_warning ("Journal replay error: 'property with ID %d doesn't exist'", predicate_id);
 			}
-			subject = query_resource_by_id (subject_id);
-			predicate = query_resource_by_id (predicate_id);
-			object = query_resource_by_id (object_id);
 
-			tracker_data_insert_statement_with_uri (graph, subject, predicate, object, &error);
 		} else if (type == TRACKER_DB_JOURNAL_DELETE_STATEMENT) {
 			TrackerProperty *property;
 
@@ -2525,8 +2564,7 @@ tracker_data_replay_journal (GHashTable *classes,
 					if (class != NULL) {
 						cache_delete_resource_type (class, NULL, graph_id, FALSE);
 					} else {
-						g_set_error (&new_error, TRACKER_DATA_ERROR, TRACKER_DATA_ERROR_UNKNOWN_CLASS,
-						             "Class '%s' not found in the ontology", object);
+						g_warning ("Journal replay error: 'class with '%s' not found in the ontology'", object);
 					}
 				} else {
 					delete_metadata_decomposed (property, object, &new_error);