C++ (Cpp) tracker_sparql_cursor_get_value_type Examples

Example #1

File: qsparql_tracker_direct_sync_result_p.cpp Project: matthewvogt/libqtsparql

bool QTrackerDirectSyncResult::next()
{
    if (!cursor) {
        // The cursor may have been unreferenced because the connection was deleted
        // and now the user is calling next(), so set the row here
        updatePos(QSparql::AfterLastRow);
        return false;
    }

    GError * error = 0;
    const gboolean active = tracker_sparql_cursor_next(cursor, 0, &error);

    // if this is an ask query, get the result
    if (isBool() && active && tracker_sparql_cursor_get_value_type(cursor, 0) == TRACKER_SPARQL_VALUE_TYPE_BOOLEAN) {
        const gboolean value = tracker_sparql_cursor_get_boolean(cursor, 0);
        setBoolValue(value != FALSE);
    }

    if (error) {
        setLastError(QSparqlError(QString::fromUtf8(error->message),
                       errorCodeToType(error->code),
                       error->code));
        g_error_free(error);
        qWarning() << "QTrackerDirectSyncResult:" << lastError() << query();
        g_object_unref(cursor);
        cursor = 0;
        return false;
    }

    if (!active) {
        g_object_unref(cursor);
        cursor = 0;
        updatePos(QSparql::AfterLastRow);
        return false;
    }
    const int oldPos = pos();
    if (oldPos == QSparql::BeforeFirstRow)
        updatePos(0);
    else
        updatePos(oldPos + 1);
    return true;
}

Example #2

File: tracker-media-art.c Project: UIKit0/tracker

static void
on_query_finished (GObject      *source_object,
                   GAsyncResult *res,
                   gpointer      user_data)
{
	GError *error = NULL;
	TrackerSparqlCursor *cursor = NULL;
	GDir *dir = NULL;
	GHashTable *table = NULL;
	const gchar *name;
	gchar *dirname = NULL;
	GList *to_remove = NULL;

	cursor = tracker_sparql_connection_query_finish (TRACKER_SPARQL_CONNECTION (source_object),
	                                                 res,
	                                                 &error);

	if (error) {
		goto on_error;
	}

	dirname = g_build_filename (g_get_user_cache_dir (),
	                            "media-art",
	                            NULL);

	if (!g_file_test (dirname, G_FILE_TEST_EXISTS)) {
		/* Ignore this and just quit the function */
		goto on_error;
	}

	dir = g_dir_open (dirname, 0, &error);

	if (error) {
		goto on_error;
	}

	table = g_hash_table_new_full (g_str_hash,
	                               g_str_equal,
	                               (GDestroyNotify) g_free,
	                               (GDestroyNotify) NULL);

	while (tracker_sparql_cursor_next (cursor, NULL, NULL)) {
		gchar *target = NULL, *album_path = NULL;
		const gchar *album, *artist;

		album = tracker_sparql_cursor_get_string (cursor, 0, NULL);
		artist = tracker_sparql_cursor_get_value_type (cursor, 1) != TRACKER_SPARQL_VALUE_TYPE_UNBOUND ? tracker_sparql_cursor_get_string (cursor, 1, NULL) : NULL;

		/* The get_path API does stripping itself */
		media_art_get_path (artist,
		                    album,
		                    "album", NULL,
		                    &target, NULL);

		g_hash_table_replace (table, target, target);

		/* Also add the file to which the symlinks are made */
		media_art_get_path (NULL,
		                    album,
		                    "album", NULL,
		                    &album_path, NULL);


		g_hash_table_replace (table, album_path, album_path);
	}

	/* Perhaps we should have an internal list of media art files that we made,
	 * instead of going over all the media art (which could also have been made
	 * by other softwares) */

	for (name = g_dir_read_name (dir); name != NULL; name = g_dir_read_name (dir)) {
		gpointer value;
		gchar *full;

		full = g_build_filename (dirname, name, NULL);

		value = g_hash_table_lookup (table, full);

		if (!value) {
			g_message ("Removing media-art file %s: no album exists that has "
			           "any songs for this media-art cache", name);
			to_remove = g_list_prepend (to_remove, (gpointer) full);
		} else {
			g_free (full);
		}
	}

	g_list_foreach (to_remove, (GFunc) g_unlink, NULL);
	g_list_foreach (to_remove, (GFunc) g_free, NULL);
	g_list_free (to_remove);

on_error:

	g_free (dirname);

	if (table) {
		g_hash_table_unref (table);
	}

	if (cursor) {
		g_object_unref (cursor);
	}

	if (dir) {
		g_dir_close (dir);
	}

	if (error) {
		g_critical ("Error running cleanup of media-art: %s",
		            error->message ? error->message : "No error given");
		g_error_free (error);
	}
}