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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
*/
/**
* Interface for serializable objects that describe a job queue task
*
* A job specification can be inserted into a queue via JobQueue::push().
* The specification parameters should be JSON serializable (e.g. no PHP classes).
* Whatever queue the job specification is pushed into is assumed to have job runners
* that will eventually pop the job specification from the queue, construct a RunnableJob
* instance from the specification, and then execute that instance via RunnableJob::run().
*
* Job classes must have a constructor that takes a Title and a parameter array, except
* when they also implement GenericParameterJob in which case they must only take an array.
* When reconstructing the job from the job queue, the value returned from getParams() will
* be passed in as the constructor's array parameter; the title will be constructed from
* the parameter array's `namespace` and `title` fields (when these are omitted, some
* fallback title will be used).
*
* @ingroup JobQueue
* @since 1.23
*/
interface IJobSpecification {
/**
* @return string Job type that defines what sort of changes this job makes
*/
public function getType();
/**
* @return array Parameters that specify sources, targets, and options for execution
*/
public function getParams();
/**
* @return int|null UNIX timestamp to delay running this job until, otherwise null
*/
public function getReleaseTimestamp();
/**
* @return bool Whether only one of each identical set of jobs should be run
*/
public function ignoreDuplicates();
/**
* Subclasses may need to override this to make duplication detection work.
* The resulting map conveys everything that makes the job unique. This is
* only checked if ignoreDuplicates() returns true, meaning that duplicate
* jobs are supposed to be ignored.
*
* @return array Map of key/values
*/
public function getDeduplicationInfo();
/**
* @see JobQueue::deduplicateRootJob()
* @return array
* @since 1.26
*/
public function getRootJobParams();
/**
* @see JobQueue::deduplicateRootJob()
* @return bool
* @since 1.22
*/
public function hasRootJobParams();
/**
* @see JobQueue::deduplicateRootJob()
* @return bool Whether this is job is a root job
*/
public function isRootJob();
}
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