[tracker] libtracker-miner: Ensure the decorator nie:DataSource is queried as an IRI

[Carlos Garnacho <carlosg src gnome org>]

commit dede7ab5fe2e904b5221a22e3017ac4328a801fe
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Feb 11 22:09:27 2014 +0100

    libtracker-miner: Ensure the decorator nie:DataSource is queried as an IRI

 src/libtracker-miner/tracker-decorator.c |   17 +++++++++++------
 1 files changed, 11 insertions(+), 6 deletions(-)
---
diff --git a/src/libtracker-miner/tracker-decorator.c b/src/libtracker-miner/tracker-decorator.c
index 0f0c92e..d906b8a 100644
--- a/src/libtracker-miner/tracker-decorator.c
+++ b/src/libtracker-miner/tracker-decorator.c
@@ -416,14 +416,19 @@ element_ensure_task (ElemNode         *node,
 
 static gint
 get_class_id (TrackerSparqlConnection *conn,
-              const gchar             *class)
+              const gchar             *class,
+              gboolean                 is_iri)
 {
        TrackerSparqlCursor *cursor;
        GError *error = NULL;
        gchar *query;
        gint id = -1;
 
-       query = g_strdup_printf ("select tracker:id (%s) { }", class);
+       if (is_iri)
+               query = g_strdup_printf ("select tracker:id (<%s>) { }", class);
+       else
+               query = g_strdup_printf ("select tracker:id (%s) { }", class);
+
        cursor = tracker_sparql_connection_query (conn, query, NULL, &error);
        g_free (query);
 
@@ -473,7 +478,7 @@ tracker_decorator_validate_class_ids (TrackerDecorator *decorator,
                        gchar *copy;
                        gint id;
 
-                       id = get_class_id (sparql_conn, class_names[i]);
+                       id = get_class_id (sparql_conn, class_names[i], FALSE);
 
                        if (id >= 0) {
                                copy = g_strdup (class_names[i]);
@@ -640,9 +645,9 @@ tracker_decorator_initable_init (GInitable     *initable,
        if (g_cancellable_is_cancelled (cancellable))
                return FALSE;
 
-       priv->rdf_type_id = get_class_id (sparql_conn, "rdf:type");
-       priv->nie_data_source_id = get_class_id (sparql_conn, "nie:dataSource");
-       priv->data_source_id = get_class_id (sparql_conn, priv->data_source);
+       priv->rdf_type_id = get_class_id (sparql_conn, "rdf:type", FALSE);
+       priv->nie_data_source_id = get_class_id (sparql_conn, "nie:dataSource", FALSE);
+       priv->data_source_id = get_class_id (sparql_conn, priv->data_source, TRUE);
        tracker_decorator_validate_class_ids (decorator, priv->class_names);
 
        priv->graph_updated_signal_id =