includes/Revision/RevisionLookup.php

   1 <?php
   2 /**
   3  *  Service for looking up page revisions.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 namespace MediaWiki\Revision;
  24
  25 use IDBAccessObject;
  26 use MediaWiki\Linker\LinkTarget;
  27 use Title;
  28
  29 /**
  30  * Service for looking up page revisions.
  31  *
  32  * @note This was written to act as a drop-in replacement for the corresponding
  33  *       static methods in Revision.
  34  *
  35  * @since 1.31
  36  * @since 1.32 Renamed from MediaWiki\Storage\RevisionLookup
  37  */
  38 interface RevisionLookup extends IDBAccessObject {
  39
  40         /**
  41          * Load a page revision from a given revision ID number.
  42          * Returns null if no such revision can be found.
  43          *
  44          * MCR migration note: this replaces Revision::newFromId
  45          *
  46          * $flags include:
  47          *
  48          * @param int $id
  49          * @param int $flags bit field, see IDBAccessObject::READ_XXX
  50          * @return RevisionRecord|null
  51          */
  52         public function getRevisionById( $id, $flags = 0 );
  53
  54         /**
  55          * Load either the current, or a specified, revision
  56          * that's attached to a given link target. If not attached
  57          * to that link target, will return null.
  58          *
  59          * MCR migration note: this replaces Revision::newFromTitle
  60          *
  61          * @param LinkTarget $linkTarget
  62          * @param int $revId (optional)
  63          * @param int $flags bit field, see IDBAccessObject::READ_XXX
  64          * @return RevisionRecord|null
  65          */
  66         public function getRevisionByTitle( LinkTarget $linkTarget, $revId = 0, $flags = 0 );
  67
  68         /**
  69          * Load either the current, or a specified, revision
  70          * that's attached to a given page ID.
  71          * Returns null if no such revision can be found.
  72          *
  73          * MCR migration note: this replaces Revision::newFromPageId
  74          *
  75          * @param int $pageId
  76          * @param int $revId (optional)
  77          * @param int $flags bit field, see IDBAccessObject::READ_XXX
  78          * @return RevisionRecord|null
  79          */
  80         public function getRevisionByPageId( $pageId, $revId = 0, $flags = 0 );
  81
  82         /**
  83          * Get previous revision for this title
  84          *
  85          * MCR migration note: this replaces Revision::getPrevious
  86          *
  87          * @param RevisionRecord $rev
  88          * @param int $flags (optional) $flags include:
  89          *      IDBAccessObject::READ_LATEST: Select the data from the master
  90          *
  91          * @return RevisionRecord|null
  92          */
  93         public function getPreviousRevision( RevisionRecord $rev, $flags = 0 );
  94
  95         /**
  96          * Get next revision for this title
  97          *
  98          * MCR migration note: this replaces Revision::getNext
  99          *
 100          * @param RevisionRecord $rev
 101          * @param int $flags (optional) $flags include:
 102          *      IDBAccessObject::READ_LATEST: Select the data from the master
 103          *
 104          * @return RevisionRecord|null
 105          */
 106         public function getNextRevision( RevisionRecord $rev, $flags = 0 );
 107
 108         /**
 109          * Get rev_timestamp from rev_id, without loading the rest of the row.
 110          *
 111          * MCR migration note: this replaces Revision::getTimestampFromId
 112          *
 113          * @param int $id
 114          * @param int $flags
 115          * @return string|bool False if not found
 116          * @since 1.34 (present earlier in RevisionStore)
 117          */
 118         public function getTimestampFromId( $id, $flags = 0 );
 119
 120         /**
 121          * Load a revision based on a known page ID and current revision ID from the DB
 122          *
 123          * This method allows for the use of caching, though accessing anything that normally
 124          * requires permission checks (aside from the text) will trigger a small DB lookup.
 125          *
 126          * MCR migration note: this replaces Revision::newKnownCurrent
 127          *
 128          * @param Title $title the associated page title
 129          * @param int $revId current revision of this page
 130          *
 131          * @return RevisionRecord|bool Returns false if missing
 132          */
 133         public function getKnownCurrentRevision( Title $title, $revId );
 134
 135 }
 136
 137 /**
 138  * Retain the old class name for backwards compatibility.
 139  * @deprecated since 1.32
 140  */
 141 class_alias( RevisionLookup::class, 'MediaWiki\Storage\RevisionLookup' );