[tracker/dbus-fd-experiment] Add example for async steroids query

[Adrien Bustany <abustany src gnome org>]

commit 23e5b404cdbbb005627b856a351e0ee9597f6717
Author: Adrien Bustany <abustany gnome org>
Date:   Thu Jun 3 20:31:59 2010 -0400

    Add example for async steroids query

 examples/steroids/Makefile.am             |    8 +++-
 examples/steroids/steroids-sparql-async.c |   62 +++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+), 1 deletions(-)
---
diff --git a/examples/steroids/Makefile.am b/examples/steroids/Makefile.am
index 09dda67..7824e77 100644
--- a/examples/steroids/Makefile.am
+++ b/examples/steroids/Makefile.am
@@ -13,7 +13,11 @@ INCLUDES =							\
 	$(GIO_CFLAGS)						\
 	$(DBUS_CFLAGS)
 
-noinst_PROGRAMS = steroids-sparql benchmark benchmark-update
+noinst_PROGRAMS = \
+	steroids-sparql						\
+	steroids-sparql-async					\
+	benchmark						\
+	benchmark-update
 
 steroids_sparql_SOURCES =					\
 	steroids-sparql.c
@@ -34,6 +38,8 @@ steroids_sparql_LDADD =						\
        -lz							\
        -lm
 
+steroids_sparql_async_LDADD= $(steroids_sparql_LDADD)
+
 benchmark_LDADD= $(steroids_sparql_LDADD)
 
 benchmark_update_LDADD= $(steroids_sparql_LDADD)
diff --git a/examples/steroids/steroids-sparql-async.c b/examples/steroids/steroids-sparql-async.c
new file mode 100644
index 0000000..7802f94
--- /dev/null
+++ b/examples/steroids/steroids-sparql-async.c
@@ -0,0 +1,62 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <libtracker-client/tracker.h>
+
+static TrackerClient *client;
+static GMainLoop *main_loop;
+
+static void
+query_cb (TrackerResultIterator *iterator,
+          GError          *error,
+          gpointer         user_data)
+{
+	if (!iterator) {
+		fprintf (stderr, "Query preparation failed, %s\n", error->message);
+		g_error_free (error);
+		exit (1);
+	}
+
+	while (tracker_result_iterator_has_next (iterator)) {
+		int i;
+
+		tracker_result_iterator_next (iterator);
+
+		for (i = 0; i < tracker_result_iterator_n_columns (iterator); i++) {
+			printf ("%s", tracker_result_iterator_value (iterator, i));
+
+			if (i != tracker_result_iterator_n_columns (iterator) - 1) {
+				printf (", ");
+			}
+		}
+
+		printf ("\n");
+	}
+
+	tracker_result_iterator_free (iterator);
+	g_object_unref (client);
+
+	g_main_loop_quit (main_loop);
+}
+
+int
+main (int argc, char **argv) {
+	const char *query;
+
+	if (argc != 2) {
+		fprintf (stderr, "Usage: %s query\n", argv[0]);
+		exit (1);
+	}
+
+	query = argv[1];
+
+	main_loop = g_main_loop_new (NULL, FALSE);
+
+	client = tracker_client_new (0, 0);
+
+	tracker_resources_sparql_query_iterate_async (client, query, query_cb, NULL);
+
+	g_main_loop_run (main_loop);
+
+	return 0;
+}