ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
class.ilMDRelation.php
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1<?php
2/*
3 +-----------------------------------------------------------------------------+
4 | ILIAS open source |
5 +-----------------------------------------------------------------------------+
6 | Copyright (c) 1998-2001 ILIAS open source, University of Cologne |
7 | |
8 | This program is free software; you can redistribute it and/or |
9 | modify it under the terms of the GNU General Public License |
10 | as published by the Free Software Foundation; either version 2 |
11 | of the License, or (at your option) any later version. |
12 | |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
21 +-----------------------------------------------------------------------------+
22*/
23
24
31include_once 'class.ilMDBase.php';
32
34{
35 function ilMDRelation($a_rbac_id = 0,$a_obj_id = 0,$a_obj_type = '')
36 {
37 parent::ilMDBase($a_rbac_id,
38 $a_obj_id,
39 $a_obj_type);
40 }
41
42
43 // METHODS OF CHILD OBJECTS (Taxon)
45 {
46 include_once 'Services/MetaData/classes/class.ilMDIdentifier_.php';
47
48 return ilMDIdentifier_::_getIds($this->getRBACId(),$this->getObjId(),$this->getMetaId(),'meta_relation');
49 }
50 function &getIdentifier_($a_identifier__id)
51 {
52 include_once 'Services/MetaData/classes/class.ilMDIdentifier_.php';
53
54 if(!$a_identifier__id)
55 {
56 return false;
57 }
58 $ide =& new ilMDIdentifier_();
59 $ide->setMetaId($a_identifier__id);
60
61 return $ide;
62 }
63 function &addIdentifier_()
64 {
65 include_once 'Services/MetaData/classes/class.ilMDIdentifier_.php';
66
67 $ide =& new ilMDIdentifier_($this->getRBACId(),$this->getObjId(),$this->getObjType());
68 $ide->setParentId($this->getMetaId());
69 $ide->setParentType('meta_relation');
70
71 return $ide;
72 }
73
75 {
76 include_once 'Services/MetaData/classes/class.ilMDDescription.php';
77
78 return ilMdDescription::_getIds($this->getRBACId(),$this->getObjId(),$this->getMetaId(),'meta_relation');
79 }
80 function &getDescription($a_description_id)
81 {
82 include_once 'Services/MetaData/classes/class.ilMDDescription.php';
83
84 if(!$a_description_id)
85 {
86 return false;
87 }
88 $des =& new ilMDDescription();
89 $des->setMetaId($a_description_id);
90
91 return $des;
92 }
93 function &addDescription()
94 {
95 include_once 'Services/MetaData/classes/class.ilMDDescription.php';
96
97 $des =& new ilMDDescription($this->getRBACId(),$this->getObjId(),$this->getObjType());
98 $des->setParentId($this->getMetaId());
99 $des->setParentType('meta_relation');
100
101 return $des;
102 }
103 // SET/GET
104 function setKind($a_kind)
105 {
106 switch($a_kind)
107 {
108 case 'IsPartOf':
109 case 'HasPart':
110 case 'IsVersionOf':
111 case 'HasVersion':
112 case 'IsFormatOf':
113 case 'HasFormat':
114 case 'References':
115 case 'IsReferencedBy':
116 case 'IsBasedOn':
117 case 'IsBasisFor':
118 case 'Requires':
119 case 'IsRequiredBy':
120 $this->kind = $a_kind;
121 return true;
122
123 default:
124 return false;
125 }
126 }
127 function getKind()
128 {
129 return $this->kind;
130 }
131
132
133 function save()
134 {
135 global $ilDB;
136
137 $fields = $this->__getFields();
138 $fields['meta_relation_id'] = array('integer',$next_id = $ilDB->nextId('il_meta_relation'));
139
140 if($this->db->insert('il_meta_relation',$fields))
141 {
142 $this->setMetaId($next_id);
143 return $this->getMetaId();
144 }
145 return false;
146 }
147
148 function update()
149 {
150 global $ilDB;
151
152 if($this->getMetaId())
153 {
154 if($this->db->update('il_meta_relation',
155 $this->__getFields(),
156 array("meta_relation_id" => array('integer',$this->getMetaId()))))
157 {
158 return true;
159 }
160 }
161 return false;
162 }
163
164 function delete()
165 {
166 global $ilDB;
167
168 if($this->getMetaId())
169 {
170 $query = "DELETE FROM il_meta_relation ".
171 "WHERE meta_relation_id = ".$ilDB->quote($this->getMetaId() ,'integer');
172 $res = $ilDB->manipulate($query);
173
174 foreach($this->getIdentifier_Ids() as $id)
175 {
176 $ide = $this->getIdentifier_($id);
177 $ide->delete();
178 }
179 foreach($this->getDescriptionIds() as $id)
180 {
181 $des = $this->getDescription($id);
182 $des->delete();
183 }
184
185 return true;
186 }
187 return false;
188 }
189
190
191 function __getFields()
192 {
193 return array('rbac_id' => array('integer',$this->getRBACId()),
194 'obj_id' => array('integer',$this->getObjId()),
195 'obj_type' => array('text',$this->getObjType()),
196 'kind' => array('text',$this->getKind()));
197 }
198
199 function read()
200 {
201 global $ilDB;
202
203 if($this->getMetaId())
204 {
205 $query = "SELECT * FROM il_meta_relation ".
206 "WHERE meta_relation_id = ".$ilDB->quote($this->getMetaId() ,'integer');
207
208 $res = $this->db->query($query);
209 while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
210 {
211 $this->setRBACId($row->rbac_id);
212 $this->setObjId($row->obj_id);
213 $this->setObjType($row->obj_type);
214 $this->setKind($row->kind);
215 }
216 }
217 return true;
218 }
219
220 /*
221 * XML Export of all meta data
222 * @param object (xml writer) see class.ilMD2XML.php
223 *
224 */
225 function toXML(&$writer)
226 {
227 $writer->xmlStartTag('Relation',array('Kind' => $this->getKind()
228 ? $this->getKind()
229 : 'IsPartOf'));
230 $writer->xmlStartTag('Resource');
231
232 // Identifier_
233 $ides = $this->getIdentifier_Ids();
234 foreach($ides as $id)
235 {
236 $ide =& $this->getIdentifier_($id);
237 $ide->toXML($writer);
238 }
239 if(!count($ides))
240 {
241 include_once 'Services/MetaData/classes/class.ilMDIdentifier_.php';
242 $ide = new ilMDIdentifier_($this->getRBACId(),$this->getObjId());
243 $ide->toXML($writer);
244 }
245
246 // Description
247 $dess = $this->getDescriptionIds();
248 foreach($dess as $id)
249 {
250 $des =& $this->getDescription($id);
251 $des->toXML($writer);
252 }
253 if(!count($dess))
254 {
255 include_once 'Services/MetaData/classes/class.ilMDDescription.php';
256 $des = new ilMDDescription($this->getRBACId(),$this->getObjId());
257 $des->toXML($writer);
258 }
259
260 $writer->xmlEndTag('Resource');
261 $writer->xmlEndTag('Relation');
262 }
263
264
265
266 // STATIC
267 function _getIds($a_rbac_id,$a_obj_id)
268 {
269 global $ilDB;
270
271 $query = "SELECT meta_relation_id FROM il_meta_relation ".
272 "WHERE rbac_id = ".$ilDB->quote($a_rbac_id ,'integer')." ".
273 "AND obj_id = ".$ilDB->quote($a_obj_id ,'integer');
274
275 $res = $ilDB->query($query);
276 while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
277 {
278 $ids[] = $row->meta_relation_id;
279 }
280 return $ids ? $ids : array();
281 }
282}
283?>
const DB_FETCHMODE_OBJECT
Definition: class.ilDB.php:11
setObjId($a_id)
setMetaId($a_meta_id, $a_read_data=true)
setObjType($a_type)
setRBACId($a_id)
_getIds($a_rbac_id, $a_obj_id, $a_parent_id, $a_parent_type)
& getIdentifier_($a_identifier__id)
_getIds($a_rbac_id, $a_obj_id)
ilMDRelation($a_rbac_id=0, $a_obj_id=0, $a_obj_type='')
& getDescription($a_description_id)
global $ilDB