testing

ManiphestTaskProject.php
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			<?php

			/**
			* This is a DAO for the Task -> Project table, which denormalizes the
			* relationship between tasks and projects into a link table so it can be
			* efficiently queried. This table is not authoritative; the projectPHIDs field
			* of ManiphestTask is. The rows in this table are regenerated when transactions
			* are applied to tasks which affected their associated projects.
			*/
			final class ManiphestTaskProject extends ManiphestDAO {

			protected $taskPHID;
			protected $projectPHID;

			public function getConfiguration() {
			return array(
			self::CONFIG_IDS => self::IDS_MANUAL,
			self::CONFIG_TIMESTAMPS => false,
			);
			}

			public static function updateTaskProjects(
			ManiphestTask $task,
			array $new_phids) {

			$edge_type = PhabricatorProjectObjectHasProjectEdgeType::EDGECONST;

			$old_phids = PhabricatorEdgeQuery::loadDestinationPHIDs(
			$task->getPHID(),
			$edge_type);

			$add_phids = array_diff($new_phids, $old_phids);
			$rem_phids = array_diff($old_phids, $new_phids);

			if (!$add_phids && !$rem_phids) {
			return;
			}

			$editor = new PhabricatorEdgeEditor();
			foreach ($add_phids as $phid) {
			$editor->addEdge($task->getPHID(), $edge_type, $phid);
			}
			foreach ($rem_phids as $phid) {
			$editor->remEdge($task->getPHID(), $edge_type, $phid);
			}
			$editor->save();
			}

			}