ec34eb39b9
This ensures that getSha1() and getSize() will return values consistent with the revision's content, even if the content was changed indirectly via the MutableRevisionSlots object returned from getSlots(), after getSha1() or getSized() had already been called and the values cached. While mechanism that triggers T239717 remains unknown, the root cause appears to be that the cached hash and size may get out of sync with the actual content of the new revision. The suspected mechanism is a side-effect of a parser hook triggered during PST. Bug: T239717 Change-Id: I0b61eb639282334df884313cdfbb3521fbfe7e88
139 lines
3.8 KiB
PHP
139 lines
3.8 KiB
PHP
<?php
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/**
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* Mutable version of RevisionSlots, for constructing a new revision.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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namespace MediaWiki\Revision;
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use Content;
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/**
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* Mutable version of RevisionSlots, for constructing a new revision.
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*
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* @since 1.31
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* @since 1.32 Renamed from MediaWiki\Storage\MutableRevisionSlots
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*/
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class MutableRevisionSlots extends RevisionSlots {
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/**
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* @var callable|null
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*/
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private $resetCallback;
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/**
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* Constructs a MutableRevisionSlots that inherits from the given
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* list of slots.
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*
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* @param SlotRecord[] $slots
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* @param callable|null $resetCallback Callback to be triggered whenever slots change.
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* Signature: function ( MutableRevisionSlots ): void.
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*
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* @return MutableRevisionSlots
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*/
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public static function newFromParentRevisionSlots(
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array $slots,
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?callable $resetCallback = null
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) {
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$inherited = [];
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foreach ( $slots as $slot ) {
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$role = $slot->getRole();
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$inherited[$role] = SlotRecord::newInherited( $slot );
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}
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return new MutableRevisionSlots( $inherited, $resetCallback );
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}
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/**
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* @param SlotRecord[] $slots An array of SlotRecords.
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* @param callable|null $resetCallback Callback to be triggered whenever slots change.
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* Signature: function ( MutableRevisionSlots ): void.
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*/
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public function __construct( array $slots = [], ?callable $resetCallback = null ) {
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parent::__construct( $slots );
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$this->resetCallback = $resetCallback;
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}
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/**
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* Sets the given slot.
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* If a slot with the same role is already present, it is replaced.
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*
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* @param SlotRecord $slot
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*/
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public function setSlot( SlotRecord $slot ) {
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if ( !is_array( $this->slots ) ) {
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$this->getSlots(); // initialize $this->slots
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}
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$role = $slot->getRole();
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$this->slots[$role] = $slot;
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$this->triggerResetCallback();
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}
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/**
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* Sets the given slot to an inherited version of $slot.
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* If a slot with the same role is already present, it is replaced.
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*
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* @param SlotRecord $slot
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*/
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public function inheritSlot( SlotRecord $slot ) {
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$this->setSlot( SlotRecord::newInherited( $slot ) );
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}
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/**
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* Sets the content for the slot with the given role.
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* If a slot with the same role is already present, it is replaced.
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*
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* @param string $role
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* @param Content $content
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*/
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public function setContent( $role, Content $content ) {
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$slot = SlotRecord::newUnsaved( $role, $content );
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$this->setSlot( $slot );
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}
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/**
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* Remove the slot for the given role, discontinue the corresponding stream.
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*
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* @param string $role
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*/
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public function removeSlot( $role ) {
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if ( !is_array( $this->slots ) ) {
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$this->getSlots(); // initialize $this->slots
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}
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unset( $this->slots[$role] );
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$this->triggerResetCallback();
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}
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/**
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* Trigger the reset callback supplied to the constructor, if any.
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*/
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private function triggerResetCallback() {
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if ( $this->resetCallback ) {
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( $this->resetCallback )( $this );
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}
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}
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}
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/**
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* Retain the old class name for backwards compatibility.
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* @deprecated since 1.32
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*/
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class_alias( MutableRevisionSlots::class, 'MediaWiki\Storage\MutableRevisionSlots' );
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