diff options
Diffstat (limited to 'calendar/pcs/query-backend.c')
| -rw-r--r-- | calendar/pcs/query-backend.c | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/calendar/pcs/query-backend.c b/calendar/pcs/query-backend.c deleted file mode 100644 index 7d6cca041a..0000000000 --- a/calendar/pcs/query-backend.c +++ /dev/null @@ -1,361 +0,0 @@ -/* Evolution calendar - Backend cache for calendar queries. - * - * Copyright (C) 2001 Ximian, Inc. - * - * Author: Rodrigo Moya <rodrigo@ximian.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program 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 program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <glib.h> -#include <libgnome/gnome-i18n.h> -#include <cal-util/cal-component.h> -#include "query.h" -#include "query-backend.h" - -static void query_backend_class_init (QueryBackendClass *klass); -static void query_backend_init (QueryBackend *qb, QueryBackendClass *klass); -static void query_backend_finalize (GObject *object); - -typedef struct { - CalComponent *comp; -} QueryBackendComponent; - -/* Private part of the QueryBackend structure */ -struct _QueryBackendPrivate { - char *uri; - CalBackend *backend; - GHashTable *components; - GList *queries; -}; - -static GHashTable *loaded_backends = NULL; -static GObjectClass *parent_class = NULL; - -/* Class initialization function for the backend cache */ -static void -query_backend_class_init (QueryBackendClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - - parent_class = g_type_class_peek_parent (klass); - - object_class->finalize = query_backend_finalize; -} - -/* Object initialization function for the backend cache */ -static void -query_backend_init (QueryBackend *qb, QueryBackendClass *klass) -{ - QueryBackendPrivate *priv; - - priv = g_new0 (QueryBackendPrivate, 1); - qb->priv = priv; - - priv->uri = NULL; - priv->backend = NULL; - priv->components = g_hash_table_new (g_str_hash, g_str_equal); - priv->queries = NULL; -} - -static void -free_hash_comp_cb (gpointer key, gpointer value, gpointer user_data) -{ - g_free (key); - g_object_unref (value); -} - -/* Finalize handler for the backend cache */ -static void -query_backend_finalize (GObject *object) -{ - QueryBackend *qb = (QueryBackend *) object; - - g_return_if_fail (object != NULL); - g_return_if_fail (IS_QUERY_BACKEND (qb)); - - /* remove the QueryBackend from the internal hash table */ - g_hash_table_remove (loaded_backends, qb->priv->uri); - if (g_hash_table_size (loaded_backends) == 0) { - g_hash_table_destroy (loaded_backends); - loaded_backends = NULL; - } - - /* free memory */ - qb->priv->backend = NULL; - - g_free (qb->priv->uri); - qb->priv->uri = NULL; - - g_hash_table_foreach (qb->priv->components, (GHFunc) free_hash_comp_cb, NULL); - g_hash_table_destroy (qb->priv->components); - qb->priv->components = NULL; - - g_list_free (qb->priv->queries); - qb->priv->queries = NULL; - - g_free (qb->priv); - qb->priv = NULL; - - if (G_OBJECT_CLASS (parent_class)->finalize) - (* G_OBJECT_CLASS (parent_class)->finalize) (object); -} - -/** - * query_backend_get_type: - * @void: - * - * Registers the #QueryBackend class if necessary, and returns the type ID - * associated to it. - * - * Return value: The type ID of the #QueryBackend class. - **/ -GType -query_backend_get_type (void) -{ - static GType type = 0; - - if (!type) { - static GTypeInfo info = { - sizeof (QueryBackendClass), - (GBaseInitFunc) NULL, - (GBaseFinalizeFunc) NULL, - (GClassInitFunc) query_backend_class_init, - NULL, NULL, - sizeof (QueryBackend), - 0, - (GInstanceInitFunc) query_backend_init - }; - type = g_type_register_static (G_TYPE_OBJECT, "QueryBackend", &info, 0); - } - - return type; -} - -static void -backend_destroyed_cb (gpointer user_data, GObject *where_backend_was) -{ - QueryBackend *qb = (QueryBackend *) user_data; - - g_return_if_fail (IS_QUERY_BACKEND (qb)); - - g_object_unref (qb); -} - -static void -object_updated_cb (CalBackend *backend, const char *uid, gpointer user_data) -{ - gpointer orig_key, orig_value; - const char *tmp_uid; - CalComponent *comp; - icalcomponent *icalcomp; - char *comp_str; - QueryBackend *qb = (QueryBackend *) user_data; - - g_return_if_fail (IS_QUERY_BACKEND (qb)); - - if (g_hash_table_lookup_extended (qb->priv->components, uid, &orig_key, &orig_value)) { - g_hash_table_remove (qb->priv->components, uid); - g_free (orig_key); - g_object_unref (orig_value); - } - - comp_str = cal_backend_get_object (qb->priv->backend, uid); - if (!comp_str) - return; - - icalcomp = icalparser_parse_string (comp_str); - g_free (comp_str); - if (icalcomp) { - comp = cal_component_new (); - if (!cal_component_set_icalcomponent (comp, icalcomp)) { - icalcomponent_free (icalcomp); - g_object_unref (comp); - return; - } - - cal_component_get_uid (comp, &tmp_uid); - if (!uid || !*uid) { - g_object_unref (comp); - } else - g_hash_table_insert (qb->priv->components, g_strdup (tmp_uid), comp); - } -} - -static void -object_removed_cb (CalBackend *backend, const char *uid, gpointer user_data) -{ - gpointer orig_key, orig_value; - QueryBackend *qb = (QueryBackend *) user_data; - - g_return_if_fail (IS_QUERY_BACKEND (qb)); - - if (g_hash_table_lookup_extended (qb->priv->components, uid, &orig_key, &orig_value)) { - g_hash_table_remove (qb->priv->components, uid); - g_free (orig_key); - g_object_unref (orig_value); - } -} - -static void -query_destroyed_cb (gpointer user_data, GObject *where_the_object_was) -{ - Query *query = (Query *) where_the_object_was; - QueryBackend *qb = (QueryBackend *) user_data; - - g_return_if_fail (IS_QUERY (query)); - g_return_if_fail (IS_QUERY_BACKEND (qb)); - - qb->priv->queries = g_list_remove (qb->priv->queries, query); -} - -static void -foreach_uid_cb (gpointer data, gpointer user_data) -{ - QueryBackend *qb = (QueryBackend *) user_data; - - g_return_if_fail (data != NULL); - g_return_if_fail (IS_QUERY_BACKEND (qb)); - - object_updated_cb (qb->priv->backend, (const char *) data, qb); -} - -/** - * query_backend_new - * @query: The #Query object that issues the query. - * @backend: A #CalBackend object. - * - * Create a new #QueryBackend instance, which is a class to - * have a cache of objects for the calendar queries, so that - * we don't have to ask the calendar backend to get the objects - * everytime. - * - * Returns: the newly-created object. - */ -QueryBackend * -query_backend_new (Query *query, CalBackend *backend) -{ - QueryBackend *qb = NULL; - - g_return_val_if_fail (IS_QUERY (query), NULL); - g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL); - - if (!loaded_backends) - loaded_backends = g_hash_table_new (g_str_hash, g_str_equal); - - /* see if we already have the backend loaded */ - qb = g_hash_table_lookup (loaded_backends, - cal_backend_get_uri (backend)); - if (!qb) { - GList *uidlist; - - qb = g_object_new (QUERY_BACKEND_TYPE, NULL); - - qb->priv->uri = g_strdup (cal_backend_get_uri (backend)); - qb->priv->backend = backend; - - /* load all UIDs */ - uidlist = cal_backend_get_uids (backend, CALOBJ_TYPE_ANY); - g_list_foreach (uidlist, foreach_uid_cb, qb); - cal_obj_uid_list_free (uidlist); - - g_object_weak_ref (G_OBJECT (backend), backend_destroyed_cb, qb); - g_signal_connect (G_OBJECT (backend), "obj_updated", - G_CALLBACK (object_updated_cb), qb); - g_signal_connect (G_OBJECT (backend), "obj_removed", - G_CALLBACK (object_removed_cb), qb); - - g_hash_table_insert (loaded_backends, qb->priv->uri, qb); - } - - qb->priv->queries = g_list_append (qb->priv->queries, query); - g_object_weak_ref (G_OBJECT (query), query_destroyed_cb, qb); - - return qb; -} - -typedef struct { - GList *uidlist; - CalObjType type; -} GetUidsData; - -static void -uid_hash_cb (gpointer key, gpointer value, gpointer user_data) -{ - CalComponentVType vtype; - char *uid = (char *) key; - CalComponent *comp = (CalComponent *) value; - GetUidsData *uids_data = (GetUidsData *) user_data; - - g_return_if_fail (uid != NULL); - g_return_if_fail (IS_CAL_COMPONENT (comp)); - g_return_if_fail (uids_data != NULL); - - vtype = cal_component_get_vtype (comp); - if (vtype == CAL_COMPONENT_EVENT && uids_data->type == CALOBJ_TYPE_EVENT) - uids_data->uidlist = g_list_append (uids_data->uidlist, g_strdup (uid)); - else if (vtype == CAL_COMPONENT_TODO && uids_data->type == CALOBJ_TYPE_TODO) - uids_data->uidlist = g_list_append (uids_data->uidlist, g_strdup (uid)); - else if (vtype == CAL_COMPONENT_JOURNAL && uids_data->type == CALOBJ_TYPE_JOURNAL) - uids_data->uidlist = g_list_append (uids_data->uidlist, g_strdup (uid)); - else if (uids_data->type == CALOBJ_TYPE_ANY) - uids_data->uidlist = g_list_append (uids_data->uidlist, g_strdup (uid)); -} - -/** - * query_backend_get_uids - * @qb: A #QueryBackend type. - * @type: Type of objects to get the UIDs for. - * - * Get a list of all UIDs for objects of the given type out from - * the specified #QueryBackend object. - * - * Returns: a GList of UIDs, which should be freed, when no longer needed, - * via a call to cal_obj_uid_list_free. - */ -GList * -query_backend_get_uids (QueryBackend *qb, CalObjType type) -{ - GetUidsData uids_data; - - g_return_val_if_fail (IS_QUERY_BACKEND (qb), NULL); - - uids_data.uidlist = NULL; - uids_data.type = type; - g_hash_table_foreach (qb->priv->components, (GHFunc) uid_hash_cb, &uids_data); - - return uids_data.uidlist; -} - -/** - * query_backend_get_object_component - * @qb: A #QueryBackend object. - * @uid: UID of the object to retrieve. - * - * Get a #CalComponent from the given #QueryBackend. - * - * Returns: the component if found, NULL otherwise. - */ -CalComponent * -query_backend_get_object_component (QueryBackend *qb, const char *uid) -{ - g_return_val_if_fail (IS_QUERY_BACKEND (qb), NULL); - g_return_val_if_fail (uid != NULL, NULL); - - return g_hash_table_lookup (qb->priv->components, uid); -} |