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1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | */ |
20 | |
21 | namespace MediaWiki\Page; |
22 | |
23 | use Wikimedia\Assert\PreconditionException; |
24 | |
25 | /** |
26 | * Interface for a page that is (or could be, or used to be) an editable wiki page. |
27 | * |
28 | * @note In contrast to PageIdentity, a ProperPageIdentity is guaranteed to |
29 | * represent an actual editable (or creatable) page. Eventually, |
30 | * PageIdentity is intended to adopt the same contract. At that point, |
31 | * ProperPageIdentity may become an alias for PageIdentity. |
32 | * |
33 | * @note For compatibility with the WikiPage class, ProperPageIdentity instances |
34 | * may be mutable, and return different values from methods such as getId() or exist() |
35 | * at different times. In the future, the contract of this interface is intended |
36 | * to be changed to disallow this. |
37 | * |
38 | * @see https://www.mediawiki.org/wiki/Manual:Modeling_pages |
39 | * |
40 | * @stable to type |
41 | * |
42 | * @since 1.36 |
43 | */ |
44 | interface ProperPageIdentity extends PageIdentity { |
45 | |
46 | /** |
47 | * Get the ID of the wiki this page belongs to. |
48 | * |
49 | * @see RevisionRecord::getWikiId() |
50 | * |
51 | * @return string|false The wiki's logical name, of false to indicate the local wiki. |
52 | */ |
53 | public function getWikiId(); |
54 | |
55 | /** |
56 | * Returns the page ID. |
57 | * Will return 0 if the page does not currently exist. |
58 | * |
59 | * @param string|false $wikiId Must be provided when accessing the ID of a non-local |
60 | * PageIdentity, to prevent data corruption when using a PageIdentity belonging |
61 | * to one wiki in the context of another. Should be omitted if expecting the local wiki. |
62 | * @throws PreconditionException if this PageIdentity does not belong to the wiki |
63 | * identified by $wikiId. |
64 | * |
65 | * @return int |
66 | */ |
67 | public function getId( $wikiId = self::LOCAL ): int; |
68 | |
69 | /** |
70 | * Get the page title in DB key form. |
71 | * |
72 | * This should always return a valid DB key. |
73 | * |
74 | * @return string |
75 | */ |
76 | public function getDBkey(): string; |
77 | |
78 | /** |
79 | * Always true. |
80 | * Implementations must ensure that no "improper" instances can be created. |
81 | * |
82 | * @return true |
83 | */ |
84 | public function canExist(): bool; |
85 | |
86 | } |