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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\User; |
22 | |
23 | use CannotCreateActorException; |
24 | use InvalidArgumentException; |
25 | use stdClass; |
26 | use Wikimedia\Rdbms\IDatabase; |
27 | use Wikimedia\Rdbms\IReadableDatabase; |
28 | |
29 | /** |
30 | * Service for dealing with the actor table. |
31 | * @since 1.36 |
32 | */ |
33 | interface ActorNormalization { |
34 | |
35 | /** |
36 | * Instantiate a new UserIdentity object based on a $row from the actor table. |
37 | * |
38 | * Use this method when an actor row was already fetched from the DB via a join. |
39 | * This method just constructs a new instance and does not try fetching missing |
40 | * values from the DB again, use {@link UserIdentityLookup} for that. |
41 | * |
42 | * @param stdClass $row with the following fields: |
43 | * - int actor_id |
44 | * - string actor_name |
45 | * - int|null actor_user |
46 | * @return UserIdentity |
47 | * @throws InvalidArgumentException |
48 | */ |
49 | public function newActorFromRow( stdClass $row ): UserIdentity; |
50 | |
51 | /** |
52 | * Instantiate a new UserIdentity object based on field values from a DB row. |
53 | * |
54 | * Until {@link ActorMigration} is completed, the actor table joins alias actor field names |
55 | * to legacy field names. This method is convenience to construct the UserIdentity based on |
56 | * legacy field names. It's more relaxed with typing then ::newFromRow to better support legacy |
57 | * code, so always prefer ::newFromRow in new code. Eventually, once {@link ActorMigration} |
58 | * is completed and all queries use explicit join with actor table, this method will be |
59 | * deprecated and removed. |
60 | * |
61 | * @throws InvalidArgumentException |
62 | * @param int|null $userId |
63 | * @param string|null $name |
64 | * @param int|null $actorId |
65 | * @return UserIdentity |
66 | */ |
67 | public function newActorFromRowFields( $userId, $name, $actorId ): UserIdentity; |
68 | |
69 | /** |
70 | * Find the actor_id for the given name. |
71 | * |
72 | * @param string $name |
73 | * @param IReadableDatabase $db The database connection to operate on. |
74 | * The database must correspond to the wiki this ActorNormalization is bound to. |
75 | * @return int|null |
76 | */ |
77 | public function findActorIdByName( string $name, IReadableDatabase $db ): ?int; |
78 | |
79 | /** |
80 | * Find the actor_id of the given $user. |
81 | * |
82 | * @param UserIdentity $user |
83 | * @param IReadableDatabase $db The database connection to operate on. |
84 | * The database must correspond to the wiki this ActorNormalization is bound to. |
85 | * @return int|null |
86 | */ |
87 | public function findActorId( UserIdentity $user, IReadableDatabase $db ): ?int; |
88 | |
89 | /** |
90 | * Attempt to assign an actor ID to the given $user |
91 | * If it is already assigned, return the existing ID. |
92 | * |
93 | * @param UserIdentity $user |
94 | * @param IDatabase $dbw The database connection to acquire the ID from. |
95 | * The database must correspond to the wiki this ActorNormalization is bound to. |
96 | * @return int greater then 0 |
97 | * @throws CannotCreateActorException if no actor ID has been assigned to this $user |
98 | */ |
99 | public function acquireActorId( UserIdentity $user, IDatabase $dbw ): int; |
100 | |
101 | /** |
102 | * Find an actor by $id. |
103 | * |
104 | * @param int $actorId |
105 | * @param IReadableDatabase $db The database connection to operate on. |
106 | * The database must correspond to the wiki this ActorNormalization is bound to. |
107 | * @return UserIdentity|null Returns null if no actor with this $actorId exists in the database. |
108 | */ |
109 | public function getActorById( int $actorId, IReadableDatabase $db ): ?UserIdentity; |
110 | |
111 | /** |
112 | * In case all reasonable attempts of initializing a proper actor from the |
113 | * database have failed, entities can be attributed to special 'Unknown user' actor. |
114 | * |
115 | * @return UserIdentity |
116 | */ |
117 | public function getUnknownActor(): UserIdentity; |
118 | } |