1 files changed, 91 insertions, 0 deletions
diff --git a/src/libtracker-sparql/bus/tracker-bus-statement.vala b/src/libtracker-sparql/bus/tracker-bus-statement.vala
new file mode 100644
index 000000000..b14143901
--- /dev/null
+++ b/src/libtracker-sparql/bus/tracker-bus-statement.vala
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2020, Red Hat Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+public class Tracker.Bus.Statement : Tracker.Sparql.Statement {
+	private DBusConnection bus;
+	private string query;
+	private string dbus_name;
+	private string object_path;
+	private HashTable<string,GLib.Variant> arguments;
+
+	public Statement (DBusConnection bus, string dbus_name, string object_path, string query) {
+		Object ();
+		this.bus = bus;
+		this.dbus_name = dbus_name;
+		this.object_path = object_path;
+		this.query = query;
+		this.arguments = new HashTable<string, GLib.Variant> (str_hash, str_equal);
+	}
+
+	public override void bind_boolean (string name, bool value) {
+		this.arguments.insert (name, new GLib.Variant.boolean (value));
+	}
+
+	public override void bind_double (string name, double value) {
+		this.arguments.insert (name, new GLib.Variant.double (value));
+	}
+
+	public override void bind_int (string name, int64 value) {
+		this.arguments.insert (name, new GLib.Variant.int64 (value));
+	}
+
+	public override void bind_string (string name, string value) {
+		this.arguments.insert (name, new GLib.Variant.string (value));
+	}
+
+	public override void clear_bindings () {
+		this.arguments.remove_all ();
+	}
+
+	private VariantBuilder? get_arguments () {
+		if (this.arguments.size () == 0)
+			return null;
+
+		VariantBuilder builder = new VariantBuilder (new VariantType ("a{sv}"));
+		HashTableIter<string, Variant> iter = HashTableIter<string, Variant> (this.arguments);
+		unowned string arg;
+		unowned GLib.Variant value;
+
+		while (iter.next (out arg, out value))
+			builder.add ("{sv}", arg, value);
+
+		return builder;
+	}
+
+	public override Sparql.Cursor execute (GLib.Cancellable? cancellable) throws Sparql.Error, GLib.Error, GLib.IOError, GLib.DBusError {
+		// use separate main context for sync operation
+		var context = new MainContext ();
+		var loop = new MainLoop (context, false);
+		context.push_thread_default ();
+		AsyncResult async_res = null;
+		execute_async.begin (cancellable, (o, res) => {
+			async_res = res;
+			loop.quit ();
+		});
+		loop.run ();
+		context.pop_thread_default ();
+		return execute_async.end (async_res);
+	}
+
+	public async override Sparql.Cursor execute_async (GLib.Cancellable? cancellable) throws Sparql.Error, GLib.Error, GLib.IOError, GLib.DBusError {
+		return yield Tracker.Bus.Connection.perform_query_call (bus, dbus_name, object_path, query, get_arguments (), cancellable);
+	}
+}