1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GLib Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GLib at ftp://ftp.gtk.org/pub/gtk/.
30 #include <glib/gtypes.h>
34 typedef struct _GRelation GRelation;
35 typedef struct _GTuples GTuples;
44 * Indexed Relations. Imagine a really simple table in a
45 * database. Relations are not ordered. This data type is meant for
46 * maintaining a N-way mapping.
48 * g_relation_new() creates a relation with FIELDS fields
50 * g_relation_destroy() frees all resources
51 * g_tuples_destroy() frees the result of g_relation_select()
53 * g_relation_index() indexes relation FIELD with the provided
54 * equality and hash functions. this must be done before any
55 * calls to insert are made.
57 * g_relation_insert() inserts a new tuple. you are expected to
58 * provide the right number of fields.
60 * g_relation_delete() deletes all relations with KEY in FIELD
61 * g_relation_select() returns ...
62 * g_relation_count() counts ...
65 GRelation* g_relation_new (gint fields);
66 void g_relation_destroy (GRelation *relation);
67 void g_relation_index (GRelation *relation,
70 GEqualFunc key_equal_func);
71 void g_relation_insert (GRelation *relation,
73 gint g_relation_delete (GRelation *relation,
76 GTuples* g_relation_select (GRelation *relation,
79 gint g_relation_count (GRelation *relation,
82 gboolean g_relation_exists (GRelation *relation,
84 void g_relation_print (GRelation *relation);
86 void g_tuples_destroy (GTuples *tuples);
87 gpointer g_tuples_index (GTuples *tuples,
93 #endif /* __G_REL_H__ */