static void
decorator_cache_next_items (TrackerDecorator *decorator)
{
TrackerDecoratorPrivate *priv = decorator->priv;
if (priv->querying ||
g_hash_table_size (priv->tasks) > 0 ||
!g_queue_is_empty (&priv->item_cache))
return;
priv->querying = TRUE;
if (priv->n_remaining_items == 0) {
decorator_query_remaining_items (decorator);
} else {
TrackerSparqlConnection *sparql_conn;
gchar *query;
sparql_conn = tracker_miner_get_connection (TRACKER_MINER (decorator));
query = create_remaining_items_query (decorator);
tracker_sparql_connection_query_async (sparql_conn, query,
NULL, decorator_cache_items_cb,
decorator);
g_free (query);
}
}
static void
decorator_query_remaining_items (TrackerDecorator *decorator)
{
gchar *query, *clauses[] = { "COUNT(?urn)", NULL };
TrackerSparqlConnection *sparql_conn;
query = create_query_string (decorator, clauses, FALSE);
if (query) {
sparql_conn = tracker_miner_get_connection (TRACKER_MINER (decorator));
tracker_sparql_connection_query_async (sparql_conn, query,
NULL, decorator_query_remaining_items_cb,
decorator);
g_free (query);
} else {
decorator_notify_empty (decorator);
}
}
static gboolean
decorator_commit_info (TrackerDecorator *decorator)
{
TrackerSparqlConnection *sparql_conn;
TrackerDecoratorPrivate *priv;
GPtrArray *array;
gint i;
priv = decorator->priv;
if (!priv->sparql_buffer || priv->sparql_buffer->len == 0)
return FALSE;
if (priv->commit_buffer)
return FALSE;
/* Move sparql buffer to commit buffer */
priv->commit_buffer = priv->sparql_buffer;
priv->sparql_buffer = NULL;
array = g_ptr_array_new ();
for (i = 0; i < priv->commit_buffer->len; i++) {
SparqlUpdate *update;
update = &g_array_index (priv->commit_buffer, SparqlUpdate, i);
g_ptr_array_add (array, update->sparql);
}
sparql_conn = tracker_miner_get_connection (TRACKER_MINER (decorator));
tracker_sparql_connection_update_array_async (sparql_conn,
(gchar **) array->pdata,
array->len,
G_PRIORITY_DEFAULT,
NULL,
decorator_commit_cb,
decorator);
decorator_update_state (decorator, NULL, TRUE);
g_ptr_array_unref (array);
return TRUE;
}
/* If a reset is requested, we will remove from the store all items previously
* inserted by the tracker-miner-applications, this is:
* (a) all elements which are nfo:softwareIcon of a given nfo:Software
* (b) all nfo:Software in our graph (includes both applications and maemo applets)
* (c) all elements which are nfo:softwareCategoryIcon of a given nfo:SoftwareCategory
* (d) all nfo:SoftwareCategory in our graph
*/
static void
miner_applications_reset (TrackerMiner *miner)
{
GError *error = NULL;
TrackerSparqlBuilder *sparql;
sparql = tracker_sparql_builder_new_update ();
/* (a) all elements which are nfo:softwareIcon of a given nfo:Software */
tracker_sparql_builder_delete_open (sparql, TRACKER_OWN_GRAPH_URN);
tracker_sparql_builder_subject_variable (sparql, "icon");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "rdfs:Resource");
tracker_sparql_builder_delete_close (sparql);
tracker_sparql_builder_where_open (sparql);
tracker_sparql_builder_subject_variable (sparql, "software");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "nfo:Software");
tracker_sparql_builder_subject_variable (sparql, "icon");
tracker_sparql_builder_predicate (sparql, "nfo:softwareIcon");
tracker_sparql_builder_object_variable (sparql, "software");
tracker_sparql_builder_where_close (sparql);
/* (b) all nfo:Software in our graph (includes both applications and maemo applets) */
tracker_sparql_builder_delete_open (sparql, TRACKER_OWN_GRAPH_URN);
tracker_sparql_builder_subject_variable (sparql, "software");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "rdfs:Resource");
tracker_sparql_builder_delete_close (sparql);
tracker_sparql_builder_where_open (sparql);
tracker_sparql_builder_subject_variable (sparql, "software");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "nfo:Software");
tracker_sparql_builder_where_close (sparql);
/* (c) all elements which are nfo:softwareCategoryIcon of a given nfo:SoftwareCategory */
tracker_sparql_builder_delete_open (sparql, TRACKER_OWN_GRAPH_URN);
tracker_sparql_builder_subject_variable (sparql, "icon");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "rdfs:Resource");
tracker_sparql_builder_delete_close (sparql);
tracker_sparql_builder_where_open (sparql);
tracker_sparql_builder_subject_variable (sparql, "category");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "nfo:SoftwareCategory");
tracker_sparql_builder_subject_variable (sparql, "icon");
tracker_sparql_builder_predicate (sparql, "nfo:softwareCategoryIcon");
tracker_sparql_builder_object_variable (sparql, "category");
tracker_sparql_builder_where_close (sparql);
/* (d) all nfo:SoftwareCategory in our graph */
tracker_sparql_builder_delete_open (sparql, TRACKER_OWN_GRAPH_URN);
tracker_sparql_builder_subject_variable (sparql, "category");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "rdfs:Resource");
tracker_sparql_builder_delete_close (sparql);
tracker_sparql_builder_where_open (sparql);
tracker_sparql_builder_subject_variable (sparql, "category");
tracker_sparql_builder_predicate (sparql, "a");
tracker_sparql_builder_object (sparql, "nfo:SoftwareCategory");
tracker_sparql_builder_where_close (sparql);
/* Execute a sync update, we don't want the apps miner to start before
* we finish this. */
tracker_sparql_connection_update (tracker_miner_get_connection (miner),
tracker_sparql_builder_get_result (sparql),
G_PRIORITY_HIGH,
NULL,
&error);
if (error) {
/* Some error happened performing the query, not good */
g_critical ("Couldn't reset mined applications: %s",
error ? error->message : "unknown error");
g_error_free (error);
}
g_object_unref (sparql);
}
