[tracker/wip/carlosg/issue-56: 2/2] libtracker-data: Also set up blank node map on InsertData

[Carlos Garnacho <carlosg src gnome org>]

commit 4755e78cec764a395dced9f8ee3188dbc725758b
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Nov 13 23:26:04 2018 +0100

    libtracker-data: Also set up blank node map on InsertData
    
    The blank node map must be set up there, both for the URN storage
    aspect and the GVariant generation one.
    
    Closes: https://gitlab.gnome.org/GNOME/tracker/issues/56

 src/libtracker-data/tracker-sparql.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
---
diff --git a/src/libtracker-data/tracker-sparql.c b/src/libtracker-data/tracker-sparql.c
index 3f1ead05f..a45eb4a17 100644
--- a/src/libtracker-data/tracker-sparql.c
+++ b/src/libtracker-data/tracker-sparql.c
@@ -2609,9 +2609,23 @@ translate_InsertData (TrackerSparql  *sparql,
        _expect (sparql, RULE_TYPE_LITERAL, LITERAL_INSERT);
        _expect (sparql, RULE_TYPE_LITERAL, LITERAL_DATA);
 
+       if (sparql->blank_nodes) {
+               g_variant_builder_open (sparql->blank_nodes, G_VARIANT_TYPE ("a{ss}"));
+       }
+
+       sparql->current_state.blank_node_map =
+               g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+
        sparql->current_state.type = TRACKER_SPARQL_TYPE_INSERT;
        _call_rule (sparql, NAMED_RULE_QuadData, error);
 
+       if (sparql->blank_nodes) {
+               g_variant_builder_close (sparql->blank_nodes);
+       }
+
+       g_clear_pointer (&sparql->current_state.blank_node_map,
+                        g_hash_table_unref);
+
        return TRUE;
 }