1: <?php
 2: /**
 3:  * The base class representing Kolab object attributes.
 4:  *
 5:  * PHP version 5
 6:  *
 7:  * @category Kolab
 8:  * @package  Kolab_Server
 9:  * @author   Gunnar Wrobel <wrobel@pardus.de>
10:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
11:  * @link     http://pear.horde.org/index.php?package=Kolab_Server
12:  */
13: 
14: /**
15:  * The base class representing Kolab object attributes.
16:  *
17:  * Copyright 2008-2012 Horde LLC (http://www.horde.org/)
18:  *
19:  * See the enclosed file COPYING for license information (LGPL). If you
20:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
21:  *
22:  * @category Kolab
23:  * @package  Kolab_Server
24:  * @author   Gunnar Wrobel <wrobel@pardus.de>
25:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
26:  * @link     http://pear.horde.org/index.php?package=Kolab_Server
27:  */
28: abstract class Horde_Kolab_Server_Object_Attribute_Base
29: implements Horde_Kolab_Server_Object_Attribute_Interface
30: {
31:     /**
32:      * The attribute name.
33:      *
34:      * @param string
35:      */
36:     protected $name;
37: 
38:     /**
39:      * The internal attribute adapter.
40:      *
41:      * @param Horde_Kolab_Server_Structure_Attribute_Interface
42:      */
43:     protected $attribute;
44: 
45:     /**
46:      * Constructor
47:      *
48:      * @param Horde_Kolab_Server_Structure_Attribute_Interface $attribute The internal attribute adapter.
49:      * @param string                                           $name      The name of this attribute.
50:      */
51:     public function __construct(
52:         Horde_Kolab_Server_Structure_Attribute_Interface $attribute,
53:         $name
54:     ) {
55:         $this->attribute = $attribute;
56:         $this->name      = $name;
57:     }
58: 
59:     /**
60:      * Return the internal attribute adapter.
61:      *
62:      * @return Horde_Kolab_Server_Structure_Attribute_Interface The internal
63:      *                                                          attribute.
64:      */
65:     public function getAttribute()
66:     {
67:         return $this->attribute;
68:     }
69: 
70:     /**
71:      * Return the name of this attribute.
72:      *
73:      * @return string The name of this attribute.
74:      */
75:     public function getName()
76:     {
77:         return $this->name;
78:     }
79: 
80:     /**
81:      * Return if this attribute is undefined in the given data array.
82:      *
83:      * @param array $changes The data array to test.
84:      *
85:      * @return string The name of this object.
86:      */
87:     public function isEmpty(array $changes)
88:     {
89:         if ((!in_array($this->name, array_keys($changes))
90:              || $changes[$this->name] === null
91:              || $changes[$this->name] === ''
92:              || $changes[$this->name] === array())
93:         ) {
94:             return true;
95:         }
96:         return false;
97:     }
98: }