1: <?php
 2: /**
 3:  * Copyright 2006-2012 Horde LLC (http://www.horde.org/)
 4:  *
 5:  * @author   Chuck Hagenbuch <chuck@horde.org>
 6:  * @license  http://www.horde.org/licenses/bsd BSD
 7:  * @category Horde
 8:  * @package  Rdo
 9:  */
10: 
11: /**
12:  * @author   Chuck Hagenbuch <chuck@horde.org>
13:  * @license  http://www.horde.org/licenses/bsd BSD
14:  * @category Horde
15:  * @package  Rdo
16:  */
17: class Horde_Rdo
18: {
19:     /**
20:      * One-to-one relationships.
21:      */
22:     const ONE_TO_ONE = 1;
23: 
24:     /**
25:      * One-to-many relationships (this object has many children).
26:      */
27:     const ONE_TO_MANY = 2;
28: 
29:     /**
30:      * Many-to-one relationships (this object is one of many children
31:      * of a single parent).
32:      */
33:     const MANY_TO_ONE = 3;
34: 
35:     /**
36:      * Many-to-many relationships (this object relates to many
37:      * objects, each of which relate to many objects of this type).
38:      */
39:     const MANY_TO_MANY = 4;
40: 
41: }
42: