+<?php
+/**
+ * Job queue task description base code.
+ *
+ * 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
+ */
+
+/**
+ * Job queue task description interface
+ *
+ * @ingroup JobQueue
+ * @since 1.23
+ */
+interface IJobSpecification {
+ /**
+ * @return string Job type
+ */
+ public function getType();
+
+ /**
+ * @return array
+ */
+ 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();
+
+ /**
+ * @return Title Descriptive title (this can simply be informative)
+ */
+ public function getTitle();
+}