[tracker/tracker-store: 4/11] SPARQL: Initial support for DROP GRAPH queries
- From: Jürg Billeter <juergbi src gnome org>
- To: svn-commits-list gnome org
- Subject: [tracker/tracker-store: 4/11] SPARQL: Initial support for DROP GRAPH queries
- Date: Mon, 4 May 2009 12:05:11 -0400 (EDT)
commit 36623e1ce996db26f9ce64a9cabb14bbf0dc7e3c
Author: Jürg Billeter <j bitron ch>
Date: Wed Apr 29 11:17:24 2009 +0200
SPARQL: Initial support for DROP GRAPH queries
There is currently no real named graph support. DROP GRAPH is handled
by deleting the resource description (embedded metadata) but retaining
user annotations.
---
src/libtracker-data/libtracker-data.vapi | 1 +
src/libtracker-data/tracker-sparql-query.vala | 2 ++
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/libtracker-data/libtracker-data.vapi b/src/libtracker-data/libtracker-data.vapi
index 629fdd4..5833400 100644
--- a/src/libtracker-data/libtracker-data.vapi
+++ b/src/libtracker-data/libtracker-data.vapi
@@ -25,6 +25,7 @@ namespace Tracker {
public void commit_transaction ();
public void delete_statement (string subject, string predicate, string object);
public void insert_statement (string subject, string predicate, string object);
+ public void delete_resource_description (string uri);
}
}
diff --git a/src/libtracker-data/tracker-sparql-query.vala b/src/libtracker-data/tracker-sparql-query.vala
index 44407cf..0745c23 100644
--- a/src/libtracker-data/tracker-sparql-query.vala
+++ b/src/libtracker-data/tracker-sparql-query.vala
@@ -352,6 +352,8 @@ public class Tracker.SparqlQuery : Object {
execute_insert (operation);
} else if (operation.get_verb () == Rasqal.QueryVerb.DELETE) {
execute_delete (operation);
+ } else if (operation.get_verb () == Rasqal.QueryVerb.DROP) {
+ Data.delete_resource_description (operation.get_data_graph (0).name_uri.as_string ());
} else {
Data.commit_transaction ();
throw new SparqlError.PARSE ("SELECT, CONSTRUCT, DESCRIBE, and ASK are not supported in update mode");
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