tracker r2984 - trunk/src/libtracker-data

[carlosg svn gnome org]

Author: carlosg
Date: Thu Feb 26 21:14:22 2009
New Revision: 2984
URL: http://svn.gnome.org/viewvc/tracker?rev=2984&view=rev

Log:
Add missing files.

Added:
   trunk/src/libtracker-data/tracker-data-backup.c
   trunk/src/libtracker-data/tracker-data-backup.h

Added: trunk/src/libtracker-data/tracker-data-backup.c
==============================================================================
--- (empty file)
+++ trunk/src/libtracker-data/tracker-data-backup.c	Thu Feb 26 21:14:22 2009
@@ -0,0 +1,177 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2006, Mr Jamie McCracken (jamiemcc gnome org)
+ * Copyright (C) 2008, Nokia
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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.
+ */
+#include "config.h"
+
+#include <glib.h>
+#include <glib/gstdio.h>
+
+#ifdef HAVE_RAPTOR
+#include <raptor.h>
+#endif
+
+#include <libtracker-data/tracker-data-query.h>
+#include <libtracker-data/tracker-turtle.h>
+
+#include "tracker-data-backup.h"
+
+#ifdef HAVE_RAPTOR
+
+typedef struct BackupRestoreData BackupRestoreData;
+
+struct BackupRestoreData {
+	TrackerDataBackupRestoreFunc func;
+	gpointer user_data;
+};
+
+/*
+ * (uri, metadataid, value)
+ */
+static void
+extended_result_set_to_turtle (TrackerDBResultSet  *result_set,
+			       TurtleFile          *turtle_file)
+{
+	TrackerField *field;
+	gboolean valid = TRUE;
+
+	while (valid) {
+		gchar *uri, *service_type, *str;
+		gint metadata_id;
+
+		tracker_db_result_set_get (result_set,
+					   0, &uri,
+					   1, &service_type,
+					   2, &metadata_id,
+					   3, &str,
+					   -1);
+
+		field = tracker_ontology_get_field_by_id (metadata_id);
+
+		if (!field) {
+			g_critical ("Field id %d in database but not in tracker-ontology",
+				    metadata_id);
+			g_free (str);
+			g_free (service_type);
+			g_free (uri);
+			return;
+		}
+
+		g_debug ("Inserting in turtle <%s, %s, %s>",
+			 uri, tracker_field_get_name (field), str);
+		tracker_turtle_add_triple (turtle_file, uri, field, str);
+
+		g_free (str);
+		g_free (service_type);
+		g_free (uri);
+
+		valid = tracker_db_result_set_iter_next (result_set);
+	}
+}
+
+static void
+restore_backup_triple (gpointer                user_data,
+		       const raptor_statement *triple)
+{
+	BackupRestoreData *data;
+
+	data = (BackupRestoreData *) user_data;
+
+	g_debug ("Turtle loading <%s, %s, %s>",
+		 (gchar *)triple->subject,
+		 (gchar *)triple->predicate,
+		 (gchar *)triple->object);
+
+	(data.func) ((const gchar *) triple->subject,
+		     (const gchar *) triple->predicate,
+		     (const gchar *) triple->object,
+		     data->user_data);
+}
+
+#endif /* HAVE_RAPTOR */
+
+gboolean
+tracker_data_backup_save (const gchar  *turtle_filename,
+			  GError      **error)
+{
+#ifdef HAVE_RAPTOR
+	TrackerDBResultSet *data;
+	TrackerService *service;
+	TurtleFile *turtle_file;
+
+	/* TODO: temporary location */
+	if (g_file_test (turtle_filename, G_FILE_TEST_EXISTS)) {
+		g_unlink (turtle_filename);
+	}
+
+	turtle_file = tracker_turtle_open (turtle_filename);
+
+	g_message ("Saving metadata backup in turtle file");
+
+	service = tracker_ontology_get_service_by_name ("Files");
+	data = tracker_data_query_backup_metadata (service);
+
+	if (data) {
+		extended_result_set_to_turtle (data, turtle_file);
+		g_object_unref (data);
+	}
+
+	tracker_turtle_close (turtle_file);
+
+	return TRUE;
+#else
+	g_set_error (error, 0, 0,
+		     "Turtle files are not supported, could not save backup");
+
+	return FALSE;
+#endif /* HAVE_RAPTOR */
+}
+
+gboolean
+tracker_data_backup_restore (const gchar                   *turtle_filename,
+			     TrackerDataBackupRestoreFunc   restore_func,
+			     gpointer                       user_data,
+			     GError                       **error)
+{
+#ifdef HAVE_RAPTOR
+	BackupRestoreData data;
+
+	data.func = restore_func;
+	data.user_data = user_data;
+
+	g_message ("Restoring metadata backup from turtle file");
+
+	if (!g_file_test (turtle_filename, G_FILE_TEST_EXISTS)) {
+		g_set_error (error, 0, 0,
+			     "Turtle file does not exist");
+		return;
+	}
+
+	tracker_turtle_process (backup_file,
+				"/",
+				(TurtleTripleCallback) restore_backup_triple,
+				&data);
+	return TRUE;
+#else
+	g_set_error (error, 0, 0,
+		     "Turtle files are not supported, could not restore backup");
+
+	return FALSE;
+#endif /* HAVE_RAPTOR */
+}

Added: trunk/src/libtracker-data/tracker-data-backup.h
==============================================================================
--- (empty file)
+++ trunk/src/libtracker-data/tracker-data-backup.h	Thu Feb 26 21:14:22 2009
@@ -0,0 +1,42 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2006, Mr Jamie McCracken (jamiemcc gnome org)
+ * Copyright (C) 2008, Nokia
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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.
+ */
+#ifndef __TRACKER_DATA_BACKUP_H__
+#define __TRACKER_DATA_BACKUP_H__
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+typedef void (* TrackerDataBackupRestoreFunc) (const gchar *subject,
+					       const gchar *predicate,
+					       const gchar *object,
+					       gpointer     user_data);
+
+gboolean tracker_data_backup_save    (const gchar                   *turtle_filename,
+				      GError                       **error);
+gboolean tracker_data_backup_restore (const gchar                   *turtle_filename,
+				      TrackerDataBackupRestoreFunc   restore_func,
+				      gpointer                       user_data,
+				      GError                       **error);
+
+G_END_DECLS
+
+#endif /* __TRACKER_DATA_BACKUP_H__ */