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LinkTargetLookup.php
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LinkTargetLookup.php
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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Linker;
use RuntimeException;
use stdClass;
use Wikimedia\Rdbms\IDatabase;
/**
* @since 1.38
*/
interface LinkTargetLookup {
/**
* Instantiate a new LinkTarget object based on a $row from the linktarget table.
*
* Use this method when a linktarget row was already fetched from the DB via a join.
* This method just constructs a new instance and does not try fetching missing
* values from the DB again.
*
* @param stdClass $row with the following fields:
* - int lt_id
* - int lt_namespace
* - string lt_title
* @return LinkTarget
*/
public function newLinkTargetFromRow( stdClass $row ): LinkTarget;
/**
* Find a link target by $id.
*
* @param int $linkTargetId
* @return LinkTarget|null Returns null if no link target with this $linkTargetId exists in the database.
*/
public function getLinkTargetById( int $linkTargetId ): ?LinkTarget;
/**
* Attempt to assign an link target ID to the given $linkTarget. If it is already assigned,
* return the existing ID.
*
* @note If called within a transaction, the returned ID might become invalid
* if the transaction is rolled back, so it should not be passed outside of the
* transaction context.
*
* @param LinkTarget $linkTarget
* @param IDatabase $dbw The database connection to acquire the ID from.
* @return int linktarget ID greater then 0
* @throws RuntimeException if no linktarget ID has been assigned to this $linkTarget
*/
public function acquireLinkTargetId( LinkTarget $linkTarget, IDatabase $dbw ): int;
/**
* Return link target id if exists
*
* @param LinkTarget $linkTarget
* @return int|null linktarget ID greater then 0, null if not found
*/
public function getLinkTargetId( LinkTarget $linkTarget ): ?int;
}

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LinkTargetLookup.php (2 KB)

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