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	diff --git a/src/applications/maniphest/query/ManiphestTaskQuery.php b/src/applications/maniphest/query/ManiphestTaskQuery.php
	index 9ff352cd3b..0aee36dcce 100644
	--- a/src/applications/maniphest/query/ManiphestTaskQuery.php
	+++ b/src/applications/maniphest/query/ManiphestTaskQuery.php
	@@ -1,1129 +1,1129 @@
	<?php

	/**
	* Query tasks by specific criteria. This class uses the higher-performance
	* but less-general Maniphest indexes to satisfy queries.
	*/
	final class ManiphestTaskQuery extends PhabricatorCursorPagedPolicyAwareQuery {

	private $taskIDs = array();
	private $taskPHIDs = array();
	private $authorPHIDs = array();
	private $ownerPHIDs = array();
	private $includeUnowned = null;
	private $projectPHIDs = array();
	private $xprojectPHIDs = array();
	private $subscriberPHIDs = array();
	private $anyProjectPHIDs = array();
	private $anyUserProjectPHIDs = array();
	private $includeNoProject = null;
	private $dateCreatedAfter;
	private $dateCreatedBefore;
	private $dateModifiedAfter;
	private $dateModifiedBefore;

	private $fullTextSearch = '';

	private $status = 'status-any';
	const STATUS_ANY = 'status-any';
	const STATUS_OPEN = 'status-open';
	const STATUS_CLOSED = 'status-closed';
	const STATUS_RESOLVED = 'status-resolved';
	const STATUS_WONTFIX = 'status-wontfix';
	const STATUS_INVALID = 'status-invalid';
	const STATUS_SPITE = 'status-spite';
	const STATUS_DUPLICATE = 'status-duplicate';

	private $statuses;
	private $priorities;

	private $groupBy = 'group-none';
	const GROUP_NONE = 'group-none';
	const GROUP_PRIORITY = 'group-priority';
	const GROUP_OWNER = 'group-owner';
	const GROUP_STATUS = 'group-status';
	const GROUP_PROJECT = 'group-project';

	private $orderBy = 'order-modified';
	const ORDER_PRIORITY = 'order-priority';
	const ORDER_CREATED = 'order-created';
	const ORDER_MODIFIED = 'order-modified';
	const ORDER_TITLE = 'order-title';

	private $needSubscriberPHIDs;
	private $needProjectPHIDs;

	private $blockingTasks;
	private $blockedTasks;

	private $projectPolicyCheckFailed = false;

	const DEFAULT_PAGE_SIZE = 1000;

	public function withAuthors(array $authors) {
	$this->authorPHIDs = $authors;
	return $this;
	}

	public function withIDs(array $ids) {
	$this->taskIDs = $ids;
	return $this;
	}

	public function withPHIDs(array $phids) {
	$this->taskPHIDs = $phids;
	return $this;
	}

	public function withOwners(array $owners) {
	$this->includeUnowned = false;
	foreach ($owners as $k => $phid) {
	if ($phid == ManiphestTaskOwner::OWNER_UP_FOR_GRABS \|\| $phid === null) {
	$this->includeUnowned = true;
	unset($owners[$k]);
	break;
	}
	}
	$this->ownerPHIDs = $owners;
	return $this;
	}

	public function withAllProjects(array $projects) {
	$this->includeNoProject = false;
	foreach ($projects as $k => $phid) {
	if ($phid == ManiphestTaskOwner::PROJECT_NO_PROJECT) {
	$this->includeNoProject = true;
	unset($projects[$k]);
	}
	}
	$this->projectPHIDs = $projects;
	return $this;
	}

	/**
	* Add an additional "all projects" constraint to existing filters.
	*
	* This is used by boards to supplement queries.
	*
	* @param list<phid> List of project PHIDs to add to any existing constraint.
	* @return this
	*/
	public function addWithAllProjects(array $projects) {
	if ($this->projectPHIDs === null) {
	$this->projectPHIDs = array();
	}

	return $this->withAllProjects(array_merge($this->projectPHIDs, $projects));
	}

	public function withoutProjects(array $projects) {
	$this->xprojectPHIDs = $projects;
	return $this;
	}

	public function withStatus($status) {
	$this->status = $status;
	return $this;
	}

	public function withStatuses(array $statuses) {
	$this->statuses = $statuses;
	return $this;
	}

	public function withPriorities(array $priorities) {
	$this->priorities = $priorities;
	return $this;
	}

	public function withSubscribers(array $subscribers) {
	$this->subscriberPHIDs = $subscribers;
	return $this;
	}

	public function withFullTextSearch($fulltext_search) {
	$this->fullTextSearch = $fulltext_search;
	return $this;
	}

	public function setGroupBy($group) {
	$this->groupBy = $group;
	return $this;
	}

	public function setOrderBy($order) {
	$this->orderBy = $order;
	return $this;
	}

	public function withAnyProjects(array $projects) {
	$this->anyProjectPHIDs = $projects;
	return $this;
	}

	public function withAnyUserProjects(array $users) {
	$this->anyUserProjectPHIDs = $users;
	return $this;
	}

	/**
	* True returns tasks that are blocking other tasks only.
	* False returns tasks that are not blocking other tasks only.
	* Null returns tasks regardless of blocking status.
	*/
	public function withBlockingTasks($mode) {
	$this->blockingTasks = $mode;
	return $this;
	}

	public function shouldJoinBlockingTasks() {
	return $this->blockingTasks !== null;
	}

	/**
	* True returns tasks that are blocked by other tasks only.
	* False returns tasks that are not blocked by other tasks only.
	* Null returns tasks regardless of blocked by status.
	*/
	public function withBlockedTasks($mode) {
	$this->blockedTasks = $mode;
	return $this;
	}

	public function shouldJoinBlockedTasks() {
	return $this->blockedTasks !== null;
	}

	public function withDateCreatedBefore($date_created_before) {
	$this->dateCreatedBefore = $date_created_before;
	return $this;
	}

	public function withDateCreatedAfter($date_created_after) {
	$this->dateCreatedAfter = $date_created_after;
	return $this;
	}

	public function withDateModifiedBefore($date_modified_before) {
	$this->dateModifiedBefore = $date_modified_before;
	return $this;
	}

	public function withDateModifiedAfter($date_modified_after) {
	$this->dateModifiedAfter = $date_modified_after;
	return $this;
	}

	public function needSubscriberPHIDs($bool) {
	$this->needSubscriberPHIDs = $bool;
	return $this;
	}

	public function needProjectPHIDs($bool) {
	$this->needProjectPHIDs = $bool;
	return $this;
	}

	protected function willExecute() {
	// Make sure the user can see any projects specified in this
	// query FIRST.
	if ($this->projectPHIDs) {
	$projects = id(new PhabricatorProjectQuery())
	->setViewer($this->getViewer())
	->withPHIDs($this->projectPHIDs)
	->execute();
	$projects = mpull($projects, null, 'getPHID');
	foreach ($this->projectPHIDs as $index => $phid) {
	$project = idx($projects, $phid);
	if (!$project) {
	unset($this->projectPHIDs[$index]);
	continue;
	}
	}
	if (!$this->projectPHIDs) {
	$this->projectPolicyCheckFailed = true;
	}
	$this->projectPHIDs = array_values($this->projectPHIDs);
	}
	}

	protected function loadPage() {

	if ($this->projectPolicyCheckFailed) {
	throw new PhabricatorEmptyQueryException();
	}

	$task_dao = new ManiphestTask();
	$conn = $task_dao->establishConnection('r');

	$where = array();
	$where[] = $this->buildTaskIDsWhereClause($conn);
	$where[] = $this->buildTaskPHIDsWhereClause($conn);
	$where[] = $this->buildStatusWhereClause($conn);
	$where[] = $this->buildStatusesWhereClause($conn);
	$where[] = $this->buildPrioritiesWhereClause($conn);
	$where[] = $this->buildDependenciesWhereClause($conn);
	$where[] = $this->buildAuthorWhereClause($conn);
	$where[] = $this->buildOwnerWhereClause($conn);
	$where[] = $this->buildProjectWhereClause($conn);
	$where[] = $this->buildAnyProjectWhereClause($conn);
	$where[] = $this->buildAnyUserProjectWhereClause($conn);
	$where[] = $this->buildXProjectWhereClause($conn);
	$where[] = $this->buildFullTextWhereClause($conn);

	if ($this->dateCreatedAfter) {
	$where[] = qsprintf(
	$conn,
	'task.dateCreated >= %d',
	$this->dateCreatedAfter);
	}

	if ($this->dateCreatedBefore) {
	$where[] = qsprintf(
	$conn,
	'task.dateCreated <= %d',
	$this->dateCreatedBefore);
	}

	if ($this->dateModifiedAfter) {
	$where[] = qsprintf(
	$conn,
	'task.dateModified >= %d',
	$this->dateModifiedAfter);
	}

	if ($this->dateModifiedBefore) {
	$where[] = qsprintf(
	$conn,
	'task.dateModified <= %d',
	$this->dateModifiedBefore);
	}

	$where[] = $this->buildPagingClause($conn);

	$where = $this->formatWhereClause($where);

	$having = '';
	$count = '';

	if (count($this->projectPHIDs) > 1) {
	// We want to treat the query as an intersection query, not a union
	// query. We sum the project count and require it be the same as the
	// number of projects we're searching for.

	$count = ', COUNT(project.dst) projectCount';
	$having = qsprintf(
	$conn,
	'HAVING projectCount = %d',
	count($this->projectPHIDs));
	}

	$order = $this->buildCustomOrderClause($conn);

	// TODO: Clean up this nonstandardness.
	if (!$this->getLimit()) {
	$this->setLimit(self::DEFAULT_PAGE_SIZE);
	}

	$group_column = '';
	switch ($this->groupBy) {
	case self::GROUP_PROJECT:
	$group_column = qsprintf(
	$conn,
	', projectGroupName.indexedObjectPHID projectGroupPHID');
	break;
	}

	$rows = queryfx_all(
	$conn,
	'SELECT task.* %Q %Q FROM %T task %Q %Q %Q %Q %Q %Q',
	$count,
	$group_column,
	$task_dao->getTableName(),
	$this->buildJoinsClause($conn),
	$where,
	$this->buildGroupClause($conn),
	$having,
	$order,
	$this->buildLimitClause($conn));

	switch ($this->groupBy) {
	case self::GROUP_PROJECT:
	$data = ipull($rows, null, 'id');
	break;
	default:
	$data = $rows;
	break;
	}

	$tasks = $task_dao->loadAllFromArray($data);

	switch ($this->groupBy) {
	case self::GROUP_PROJECT:
	$results = array();
	foreach ($rows as $row) {
	$task = clone $tasks[$row['id']];
	$task->attachGroupByProjectPHID($row['projectGroupPHID']);
	$results[] = $task;
	}
	$tasks = $results;
	break;
	}

	return $tasks;
	}

	protected function willFilterPage(array $tasks) {
	if ($this->groupBy == self::GROUP_PROJECT) {
	// We should only return project groups which the user can actually see.
	$project_phids = mpull($tasks, 'getGroupByProjectPHID');
	$projects = id(new PhabricatorProjectQuery())
	->setViewer($this->getViewer())
	->withPHIDs($project_phids)
	->execute();
	$projects = mpull($projects, null, 'getPHID');

	foreach ($tasks as $key => $task) {
	if (!$task->getGroupByProjectPHID()) {
	// This task is either not in any projects, or only in projects
	// which we're ignoring because they're being queried for explicitly.
	continue;
	}

	if (empty($projects[$task->getGroupByProjectPHID()])) {
	unset($tasks[$key]);
	}
	}
	}

	return $tasks;
	}

	protected function didFilterPage(array $tasks) {
	$phids = mpull($tasks, 'getPHID');

	if ($this->needProjectPHIDs) {
	$edge_query = id(new PhabricatorEdgeQuery())
	->withSourcePHIDs($phids)
	->withEdgeTypes(
	array(
	PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
	));
	$edge_query->execute();

	foreach ($tasks as $task) {
	$project_phids = $edge_query->getDestinationPHIDs(
	array($task->getPHID()));
	$task->attachProjectPHIDs($project_phids);
	}
	}

	if ($this->needSubscriberPHIDs) {
	$subscriber_sets = id(new PhabricatorSubscribersQuery())
	->withObjectPHIDs($phids)
	->execute();
	foreach ($tasks as $task) {
	$subscribers = idx($subscriber_sets, $task->getPHID(), array());
	$task->attachSubscriberPHIDs($subscribers);
	}
	}

	return $tasks;
	}

	private function buildTaskIDsWhereClause(AphrontDatabaseConnection $conn) {
	if (!$this->taskIDs) {
	return null;
	}

	return qsprintf(
	$conn,
	'task.id in (%Ld)',
	$this->taskIDs);
	}

	private function buildTaskPHIDsWhereClause(AphrontDatabaseConnection $conn) {
	if (!$this->taskPHIDs) {
	return null;
	}

	return qsprintf(
	$conn,
	'task.phid in (%Ls)',
	$this->taskPHIDs);
	}

	private function buildStatusWhereClause(AphrontDatabaseConnection $conn) {
	static $map = array(
	self::STATUS_RESOLVED => ManiphestTaskStatus::STATUS_CLOSED_RESOLVED,
	self::STATUS_WONTFIX => ManiphestTaskStatus::STATUS_CLOSED_WONTFIX,
	self::STATUS_INVALID => ManiphestTaskStatus::STATUS_CLOSED_INVALID,
	self::STATUS_SPITE => ManiphestTaskStatus::STATUS_CLOSED_SPITE,
	self::STATUS_DUPLICATE => ManiphestTaskStatus::STATUS_CLOSED_DUPLICATE,
	);

	switch ($this->status) {
	case self::STATUS_ANY:
	return null;
	case self::STATUS_OPEN:
	return qsprintf(
	$conn,
	'task.status IN (%Ls)',
	ManiphestTaskStatus::getOpenStatusConstants());
	case self::STATUS_CLOSED:
	return qsprintf(
	$conn,
	'task.status IN (%Ls)',
	ManiphestTaskStatus::getClosedStatusConstants());
	default:
	$constant = idx($map, $this->status);
	if (!$constant) {
	throw new Exception("Unknown status query '{$this->status}'!");
	}
	return qsprintf(
	$conn,
	'task.status = %s',
	$constant);
	}
	}

	private function buildStatusesWhereClause(AphrontDatabaseConnection $conn) {
	if ($this->statuses) {
	return qsprintf(
	$conn,
	'task.status IN (%Ls)',
	$this->statuses);
	}
	return null;
	}

	private function buildPrioritiesWhereClause(AphrontDatabaseConnection $conn) {
	if ($this->priorities) {
	return qsprintf(
	$conn,
	'task.priority IN (%Ld)',
	$this->priorities);
	}

	return null;
	}

	private function buildAuthorWhereClause(AphrontDatabaseConnection $conn) {
	if (!$this->authorPHIDs) {
	return null;
	}

	return qsprintf(
	$conn,
	'task.authorPHID in (%Ls)',
	$this->authorPHIDs);
	}

	private function buildOwnerWhereClause(AphrontDatabaseConnection $conn) {
	if (!$this->ownerPHIDs) {
	if ($this->includeUnowned === null) {
	return null;
	} else if ($this->includeUnowned) {
	return qsprintf(
	$conn,
	'task.ownerPHID IS NULL');
	} else {
	return qsprintf(
	$conn,
	'task.ownerPHID IS NOT NULL');
	}
	}

	if ($this->includeUnowned) {
	return qsprintf(
	$conn,
	'task.ownerPHID IN (%Ls) OR task.ownerPHID IS NULL',
	$this->ownerPHIDs);
	} else {
	return qsprintf(
	$conn,
	'task.ownerPHID IN (%Ls)',
	$this->ownerPHIDs);
	}
	}

	private function buildFullTextWhereClause(AphrontDatabaseConnection $conn) {
	if (!strlen($this->fullTextSearch)) {
	return null;
	}

	// In doing a fulltext search, we first find all the PHIDs that match the
	// fulltext search, and then use that to limit the rest of the search
	$fulltext_query = id(new PhabricatorSavedQuery())
	->setEngineClassName('PhabricatorSearchApplicationSearchEngine')
	->setParameter('query', $this->fullTextSearch);

	// NOTE: Setting this to something larger than 2^53 will raise errors in
	// ElasticSearch, and billions of results won't fit in memory anyway.
	$fulltext_query->setParameter('limit', 100000);
	$fulltext_query->setParameter('type', ManiphestTaskPHIDType::TYPECONST);

	$engine = PhabricatorSearchEngineSelector::newSelector()->newEngine();
	$fulltext_results = $engine->executeSearch($fulltext_query);

	if (empty($fulltext_results)) {
	$fulltext_results = array(null);
	}

	return qsprintf(
	$conn,
	'task.phid IN (%Ls)',
	$fulltext_results);
	}

	private function buildDependenciesWhereClause(
	AphrontDatabaseConnection $conn) {

	if (!$this->shouldJoinBlockedTasks() &&
	!$this->shouldJoinBlockingTasks()) {
	return null;
	}

	$parts = array();
	if ($this->blockingTasks === true) {
	$parts[] = qsprintf(
	$conn,
	- 'blocking.dst IS NOT NULL');
	+ 'blocking.dst IS NOT NULL AND blockingtask.status IN (%Ls)',
	+ ManiphestTaskStatus::getOpenStatusConstants());
	} else if ($this->blockingTasks === false) {
	$parts[] = qsprintf(
	$conn,
	- 'blocking.dst IS NULL');
	+ 'blocking.dst IS NULL OR blockingtask.status NOT IN (%Ls)',
	+ ManiphestTaskStatus::getOpenStatusConstants());
	}

	if ($this->blockedTasks === true) {
	$parts[] = qsprintf(
	$conn,
	- 'blocked.dst IS NOT NULL');
	+ 'blocked.dst IS NOT NULL AND blockedtask.status IN (%Ls)',
	+ ManiphestTaskStatus::getOpenStatusConstants());
	} else if ($this->blockedTasks === false) {
	$parts[] = qsprintf(
	$conn,
	- 'blocked.dst IS NULL');
	+ 'blocked.dst IS NULL OR blockedtask.status NOT IN (%Ls)',
	+ ManiphestTaskStatus::getOpenStatusConstants());
	}

	return '('.implode(') OR (', $parts).')';
	}

	private function buildProjectWhereClause(AphrontDatabaseConnection $conn) {
	if (!$this->projectPHIDs && !$this->includeNoProject) {
	return null;
	}

	$parts = array();
	if ($this->projectPHIDs) {
	$parts[] = qsprintf(
	$conn,
	'project.dst in (%Ls)',
	$this->projectPHIDs);
	}
	if ($this->includeNoProject) {
	$parts[] = qsprintf(
	$conn,
	'project.dst IS NULL');
	}

	return '('.implode(') OR (', $parts).')';
	}

	private function buildAnyProjectWhereClause(AphrontDatabaseConnection $conn) {
	if (!$this->anyProjectPHIDs) {
	return null;
	}

	return qsprintf(
	$conn,
	'anyproject.dst IN (%Ls)',
	$this->anyProjectPHIDs);
	}

	private function buildAnyUserProjectWhereClause(
	AphrontDatabaseConnection $conn) {
	if (!$this->anyUserProjectPHIDs) {
	return null;
	}

	$projects = id(new PhabricatorProjectQuery())
	->setViewer($this->getViewer())
	->withMemberPHIDs($this->anyUserProjectPHIDs)
	->execute();
	$any_user_project_phids = mpull($projects, 'getPHID');
	if (!$any_user_project_phids) {
	throw new PhabricatorEmptyQueryException();
	}

	return qsprintf(
	$conn,
	'anyproject.dst IN (%Ls)',
	$any_user_project_phids);
	}

	private function buildXProjectWhereClause(AphrontDatabaseConnection $conn) {
	if (!$this->xprojectPHIDs) {
	return null;
	}

	return qsprintf(
	$conn,
	'xproject.dst IS NULL');
	}

	private function buildCustomOrderClause(AphrontDatabaseConnection $conn) {
	$reverse = ($this->getBeforeID() xor $this->getReversePaging());

	$order = array();

	switch ($this->groupBy) {
	case self::GROUP_NONE:
	break;
	case self::GROUP_PRIORITY:
	$order[] = 'task.priority';
	break;
	case self::GROUP_OWNER:
	$order[] = 'task.ownerOrdering';
	break;
	case self::GROUP_STATUS:
	$order[] = 'task.status';
	break;
	case self::GROUP_PROJECT:
	$order[] = '<group.project>';
	break;
	default:
	throw new Exception("Unknown group query '{$this->groupBy}'!");
	}

	$app_order = $this->buildApplicationSearchOrders($conn, $reverse);

	if (!$app_order) {
	switch ($this->orderBy) {
	case self::ORDER_PRIORITY:
	$order[] = 'task.priority';
	$order[] = 'task.subpriority';
	$order[] = 'task.dateModified';
	break;
	case self::ORDER_CREATED:
	$order[] = 'task.id';
	break;
	case self::ORDER_MODIFIED:
	$order[] = 'task.dateModified';
	break;
	case self::ORDER_TITLE:
	$order[] = 'task.title';
	break;
	default:
	throw new Exception("Unknown order query '{$this->orderBy}'!");
	}
	}

	$order = array_unique($order);

	if (empty($order) && empty($app_order)) {
	return null;
	}

	foreach ($order as $k => $column) {
	switch ($column) {
	case 'subpriority':
	case 'ownerOrdering':
	case 'title':
	if ($reverse) {
	$order[$k] = "{$column} DESC";
	} else {
	$order[$k] = "{$column} ASC";
	}
	break;
	case '<group.project>':
	// Put "No Project" at the end of the list.
	if ($reverse) {
	$order[$k] =
	'projectGroupName.indexedObjectName IS NULL DESC, '.
	'projectGroupName.indexedObjectName DESC';
	} else {
	$order[$k] =
	'projectGroupName.indexedObjectName IS NULL ASC, '.
	'projectGroupName.indexedObjectName ASC';
	}
	break;
	default:
	if ($reverse) {
	$order[$k] = "{$column} ASC";
	} else {
	$order[$k] = "{$column} DESC";
	}
	break;
	}
	}

	if ($app_order) {
	foreach ($app_order as $order_by) {
	$order[] = $order_by;
	}

	if ($reverse) {
	$order[] = 'task.id ASC';
	} else {
	$order[] = 'task.id DESC';
	}
	}

	return 'ORDER BY '.implode(', ', $order);
	}

	private function buildJoinsClause(AphrontDatabaseConnection $conn_r) {
	$edge_table = PhabricatorEdgeConfig::TABLE_NAME_EDGE;

	$joins = array();

	if ($this->projectPHIDs \|\| $this->includeNoProject) {
	$joins[] = qsprintf(
	$conn_r,
	'%Q JOIN %T project ON project.src = task.phid
	AND project.type = %d',
	($this->includeNoProject ? 'LEFT' : ''),
	$edge_table,
	PhabricatorProjectObjectHasProjectEdgeType::EDGECONST);
	}

	if ($this->shouldJoinBlockingTasks()) {
	$joins[] = qsprintf(
	$conn_r,
	'LEFT JOIN %T blocking ON blocking.src = task.phid '.
	'AND blocking.type = %d '.
	- 'LEFT JOIN %T blockingtask ON blocking.dst = blockingtask.phid '.
	- 'AND blockingtask.status IN (%Ls)',
	+ 'LEFT JOIN %T blockingtask ON blocking.dst = blockingtask.phid',
	$edge_table,
	ManiphestTaskDependedOnByTaskEdgeType::EDGECONST,
	- id(new ManiphestTask())->getTableName(),
	- ManiphestTaskStatus::getOpenStatusConstants());
	+ id(new ManiphestTask())->getTableName());
	}
	if ($this->shouldJoinBlockedTasks()) {
	$joins[] = qsprintf(
	$conn_r,
	'LEFT JOIN %T blocked ON blocked.src = task.phid '.
	'AND blocked.type = %d '.
	- 'LEFT JOIN %T blockedtask ON blocked.dst = blockedtask.phid '.
	- 'AND blockedtask.status IN (%Ls)',
	+ 'LEFT JOIN %T blockedtask ON blocked.dst = blockedtask.phid',
	$edge_table,
	ManiphestTaskDependsOnTaskEdgeType::EDGECONST,
	- id(new ManiphestTask())->getTableName(),
	- ManiphestTaskStatus::getOpenStatusConstants());
	+ id(new ManiphestTask())->getTableName());
	}

	if ($this->anyProjectPHIDs \|\| $this->anyUserProjectPHIDs) {
	$joins[] = qsprintf(
	$conn_r,
	'JOIN %T anyproject ON anyproject.src = task.phid
	AND anyproject.type = %d',
	$edge_table,
	PhabricatorProjectObjectHasProjectEdgeType::EDGECONST);
	}

	if ($this->xprojectPHIDs) {
	$joins[] = qsprintf(
	$conn_r,
	'LEFT JOIN %T xproject ON xproject.src = task.phid
	AND xproject.type = %d
	AND xproject.dst IN (%Ls)',
	$edge_table,
	PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
	$this->xprojectPHIDs);
	}

	if ($this->subscriberPHIDs) {
	$joins[] = qsprintf(
	$conn_r,
	'JOIN %T e_ccs ON e_ccs.src = task.phid '.
	'AND e_ccs.type = %s '.
	'AND e_ccs.dst in (%Ls)',
	PhabricatorEdgeConfig::TABLE_NAME_EDGE,
	PhabricatorObjectHasSubscriberEdgeType::EDGECONST,
	$this->subscriberPHIDs);
	}

	switch ($this->groupBy) {
	case self::GROUP_PROJECT:
	$ignore_group_phids = $this->getIgnoreGroupedProjectPHIDs();
	if ($ignore_group_phids) {
	$joins[] = qsprintf(
	$conn_r,
	'LEFT JOIN %T projectGroup ON task.phid = projectGroup.src
	AND projectGroup.type = %d
	AND projectGroup.dst NOT IN (%Ls)',
	$edge_table,
	PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
	$ignore_group_phids);
	} else {
	$joins[] = qsprintf(
	$conn_r,
	'LEFT JOIN %T projectGroup ON task.phid = projectGroup.src
	AND projectGroup.type = %d',
	$edge_table,
	PhabricatorProjectObjectHasProjectEdgeType::EDGECONST);
	}
	$joins[] = qsprintf(
	$conn_r,
	'LEFT JOIN %T projectGroupName
	ON projectGroup.dst = projectGroupName.indexedObjectPHID',
	id(new ManiphestNameIndex())->getTableName());
	break;
	}

	$joins[] = $this->buildApplicationSearchJoinClause($conn_r);

	return implode(' ', $joins);
	}

	private function buildGroupClause(AphrontDatabaseConnection $conn_r) {
	$joined_multiple_rows = (count($this->projectPHIDs) > 1) \|\|
	(count($this->anyProjectPHIDs) > 1) \|\|
	$this->shouldJoinBlockingTasks() \|\|
	$this->shouldJoinBlockedTasks() \|\|
	($this->getApplicationSearchMayJoinMultipleRows());

	$joined_project_name = ($this->groupBy == self::GROUP_PROJECT);

	// If we're joining multiple rows, we need to group the results by the
	// task IDs.
	if ($joined_multiple_rows) {
	if ($joined_project_name) {
	return 'GROUP BY task.phid, projectGroup.dst';
	} else {
	return 'GROUP BY task.phid';
	}
	} else {
	return '';
	}
	}

	/**
	* Return project PHIDs which we should ignore when grouping tasks by
	* project. For example, if a user issues a query like:
	*
	* Tasks in all projects: Frontend, Bugs
	*
	* ...then we don't show "Frontend" or "Bugs" groups in the result set, since
	* they're meaningless as all results are in both groups.
	*
	* Similarly, for queries like:
	*
	* Tasks in any projects: Public Relations
	*
	* ...we ignore the single project, as every result is in that project. (In
	* the case that there are several "any" projects, we do not ignore them.)
	*
	* @return list<phid> Project PHIDs which should be ignored in query
	* construction.
	*/
	private function getIgnoreGroupedProjectPHIDs() {
	$phids = array();

	if ($this->projectPHIDs) {
	$phids[] = $this->projectPHIDs;
	}

	if (count($this->anyProjectPHIDs) == 1) {
	$phids[] = $this->anyProjectPHIDs;
	}

	// Maybe we should also exclude the "excludeProjectPHIDs"? It won't
	// impact the results, but we might end up with a better query plan.
	// Investigate this on real data? This is likely very rare.

	return array_mergev($phids);
	}

	private function loadCursorObject($id) {
	$results = id(new ManiphestTaskQuery())
	->setViewer($this->getPagingViewer())
	->withIDs(array((int)$id))
	->execute();
	return head($results);
	}

	protected function getPagingValue($result) {
	$id = $result->getID();

	switch ($this->groupBy) {
	case self::GROUP_NONE:
	return $id;
	case self::GROUP_PRIORITY:
	return $id.'.'.$result->getPriority();
	case self::GROUP_OWNER:
	return rtrim($id.'.'.$result->getOwnerPHID(), '.');
	case self::GROUP_STATUS:
	return $id.'.'.$result->getStatus();
	case self::GROUP_PROJECT:
	return rtrim($id.'.'.$result->getGroupByProjectPHID(), '.');
	default:
	throw new Exception("Unknown group query '{$this->groupBy}'!");
	}
	}

	protected function buildPagingClause(AphrontDatabaseConnection $conn_r) {
	$default = parent::buildPagingClause($conn_r);

	$before_id = $this->getBeforeID();
	$after_id = $this->getAfterID();

	if (!$before_id && !$after_id) {
	return $default;
	}

	$cursor_id = nonempty($before_id, $after_id);
	$cursor_parts = explode('.', $cursor_id, 2);
	$task_id = $cursor_parts[0];
	$group_id = idx($cursor_parts, 1);

	$cursor = $this->loadCursorObject($task_id);
	if (!$cursor) {
	return null;
	}

	$columns = array();

	switch ($this->groupBy) {
	case self::GROUP_NONE:
	break;
	case self::GROUP_PRIORITY:
	$columns[] = array(
	'name' => 'task.priority',
	'value' => (int)$group_id,
	'type' => 'int',
	);
	break;
	case self::GROUP_OWNER:
	$columns[] = array(
	'name' => '(task.ownerOrdering IS NULL)',
	'value' => (int)(strlen($group_id) ? 0 : 1),
	'type' => 'int',
	);
	if ($group_id) {
	$paging_users = id(new PhabricatorPeopleQuery())
	->setViewer($this->getViewer())
	->withPHIDs(array($group_id))
	->execute();
	if (!$paging_users) {
	return null;
	}
	$columns[] = array(
	'name' => 'task.ownerOrdering',
	'value' => head($paging_users)->getUsername(),
	'type' => 'string',
	'reverse' => true,
	);
	}
	break;
	case self::GROUP_STATUS:
	$columns[] = array(
	'name' => 'task.status',
	'value' => $group_id,
	'type' => 'string',
	);
	break;
	case self::GROUP_PROJECT:
	$columns[] = array(
	'name' => '(projectGroupName.indexedObjectName IS NULL)',
	'value' => (int)(strlen($group_id) ? 0 : 1),
	'type' => 'int',
	);
	if ($group_id) {
	$paging_projects = id(new PhabricatorProjectQuery())
	->setViewer($this->getViewer())
	->withPHIDs(array($group_id))
	->execute();
	if (!$paging_projects) {
	return null;
	}
	$columns[] = array(
	'name' => 'projectGroupName.indexedObjectName',
	'value' => head($paging_projects)->getName(),
	'type' => 'string',
	'reverse' => true,
	);
	}
	break;
	default:
	throw new Exception("Unknown group query '{$this->groupBy}'!");
	}

	$app_columns = $this->buildApplicationSearchPagination($conn_r, $cursor);
	if ($app_columns) {
	$columns = array_merge($columns, $app_columns);
	$columns[] = array(
	'name' => 'task.id',
	'value' => (int)$cursor->getID(),
	'type' => 'int',
	);
	} else {
	switch ($this->orderBy) {
	case self::ORDER_PRIORITY:
	if ($this->groupBy != self::GROUP_PRIORITY) {
	$columns[] = array(
	'name' => 'task.priority',
	'value' => (int)$cursor->getPriority(),
	'type' => 'int',
	);
	}
	$columns[] = array(
	'name' => 'task.subpriority',
	'value' => (int)$cursor->getSubpriority(),
	'type' => 'int',
	'reverse' => true,
	);
	$columns[] = array(
	'name' => 'task.dateModified',
	'value' => (int)$cursor->getDateModified(),
	'type' => 'int',
	);
	break;
	case self::ORDER_CREATED:
	$columns[] = array(
	'name' => 'task.id',
	'value' => (int)$cursor->getID(),
	'type' => 'int',
	);
	break;
	case self::ORDER_MODIFIED:
	$columns[] = array(
	'name' => 'task.dateModified',
	'value' => (int)$cursor->getDateModified(),
	'type' => 'int',
	);
	break;
	case self::ORDER_TITLE:
	$columns[] = array(
	'name' => 'task.title',
	'value' => $cursor->getTitle(),
	'type' => 'string',
	);
	$columns[] = array(
	'name' => 'task.id',
	'value' => $cursor->getID(),
	'type' => 'int',
	);
	break;
	default:
	throw new Exception("Unknown order query '{$this->orderBy}'!");
	}
	}

	return $this->buildPagingClauseFromMultipleColumns(
	$conn_r,
	$columns,
	array(
	'reversed' => (bool)($before_id xor $this->getReversePaging()),
	));
	}

	protected function getApplicationSearchObjectPHIDColumn() {
	return 'task.phid';
	}

	public function getQueryApplicationClass() {
	return 'PhabricatorManiphestApplication';
	}

	}

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