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ConpherenceThreadQuery.php
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Fri, Sep 6, 23:59

ConpherenceThreadQuery.php
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<?php
final class ConpherenceThreadQuery
extends PhabricatorCursorPagedPolicyAwareQuery {
const TRANSACTION_LIMIT = 100;
private $phids;
private $ids;
private $participantPHIDs;
private $needParticipants;
private $needTransactions;
private $afterTransactionID;
private $beforeTransactionID;
private $transactionLimit;
private $fulltext;
private $needProfileImage;
public function needParticipants($need) {
$this->needParticipants = $need;
return $this;
}
public function needProfileImage($need) {
$this->needProfileImage = $need;
return $this;
}
public function needTransactions($need_transactions) {
$this->needTransactions = $need_transactions;
return $this;
}
public function withIDs(array $ids) {
$this->ids = $ids;
return $this;
}
public function withPHIDs(array $phids) {
$this->phids = $phids;
return $this;
}
public function withParticipantPHIDs(array $phids) {
$this->participantPHIDs = $phids;
return $this;
}
public function setAfterTransactionID($id) {
$this->afterTransactionID = $id;
return $this;
}
public function setBeforeTransactionID($id) {
$this->beforeTransactionID = $id;
return $this;
}
public function setTransactionLimit($transaction_limit) {
$this->transactionLimit = $transaction_limit;
return $this;
}
public function getTransactionLimit() {
return $this->transactionLimit;
}
public function withFulltext($query) {
$this->fulltext = $query;
return $this;
}
public function withTitleNgrams($ngrams) {
return $this->withNgramsConstraint(
id(new ConpherenceThreadTitleNgrams()),
$ngrams);
}
protected function loadPage() {
$table = new ConpherenceThread();
$conn_r = $table->establishConnection('r');
$data = queryfx_all(
$conn_r,
'SELECT thread.* FROM %T thread %Q %Q %Q %Q %Q',
$table->getTableName(),
$this->buildJoinClause($conn_r),
$this->buildWhereClause($conn_r),
$this->buildGroupClause($conn_r),
$this->buildOrderClause($conn_r),
$this->buildLimitClause($conn_r));
$conpherences = $table->loadAllFromArray($data);
if ($conpherences) {
$conpherences = mpull($conpherences, null, 'getPHID');
$this->loadParticipantsAndInitHandles($conpherences);
if ($this->needParticipants) {
$this->loadCoreHandles($conpherences, 'getParticipantPHIDs');
}
if ($this->needTransactions) {
$this->loadTransactionsAndHandles($conpherences);
}
if ($this->needProfileImage) {
$default = null;
$file_phids = mpull($conpherences, 'getProfileImagePHID');
$file_phids = array_filter($file_phids);
if ($file_phids) {
$files = id(new PhabricatorFileQuery())
->setParentQuery($this)
->setViewer($this->getViewer())
->withPHIDs($file_phids)
->execute();
$files = mpull($files, null, 'getPHID');
} else {
$files = array();
}
foreach ($conpherences as $conpherence) {
$file = idx($files, $conpherence->getProfileImagePHID());
if (!$file) {
if (!$default) {
$default = PhabricatorFile::loadBuiltin(
$this->getViewer(),
'conpherence.png');
}
$file = $default;
}
$conpherence->attachProfileImageFile($file);
}
}
}
return $conpherences;
}
protected function buildGroupClause(AphrontDatabaseConnection $conn_r) {
if ($this->participantPHIDs !== null || strlen($this->fulltext)) {
return 'GROUP BY thread.id';
} else {
return $this->buildApplicationSearchGroupClause($conn_r);
}
}
protected function buildJoinClauseParts(AphrontDatabaseConnection $conn) {
$joins = parent::buildJoinClauseParts($conn);
if ($this->participantPHIDs !== null) {
$joins[] = qsprintf(
$conn,
'JOIN %T p ON p.conpherencePHID = thread.phid',
id(new ConpherenceParticipant())->getTableName());
}
if (strlen($this->fulltext)) {
$joins[] = qsprintf(
$conn,
'JOIN %T idx ON idx.threadPHID = thread.phid',
id(new ConpherenceIndex())->getTableName());
}
// See note in buildWhereClauseParts() about this optimization.
$viewer = $this->getViewer();
if (!$viewer->isOmnipotent() && $viewer->isLoggedIn()) {
$joins[] = qsprintf(
$conn,
'LEFT JOIN %T vp ON vp.conpherencePHID = thread.phid
AND vp.participantPHID = %s',
id(new ConpherenceParticipant())->getTableName(),
$viewer->getPHID());
}
return $joins;
}
protected function buildWhereClauseParts(AphrontDatabaseConnection $conn) {
$where = parent::buildWhereClauseParts($conn);
// Optimize policy filtering of private rooms. If we are not looking for
// particular rooms by ID or PHID, we can just skip over any rooms with
// "View Policy: Room Participants" if the viewer isn't a participant: we
// know they won't be able to see the room.
// This avoids overheating browse/search queries, since it's common for
// a large number of rooms to be private and have this view policy.
$viewer = $this->getViewer();
$can_optimize =
!$viewer->isOmnipotent() &&
($this->ids === null) &&
($this->phids === null);
if ($can_optimize) {
$members_policy = id(new ConpherenceThreadMembersPolicyRule())
->getObjectPolicyFullKey();
if ($viewer->isLoggedIn()) {
$where[] = qsprintf(
$conn,
'thread.viewPolicy != %s OR vp.participantPHID = %s',
$members_policy,
$viewer->getPHID());
} else {
$where[] = qsprintf(
$conn,
'thread.viewPolicy != %s',
$members_policy);
}
}
if ($this->ids !== null) {
$where[] = qsprintf(
$conn,
'thread.id IN (%Ld)',
$this->ids);
}
if ($this->phids !== null) {
$where[] = qsprintf(
$conn,
'thread.phid IN (%Ls)',
$this->phids);
}
if ($this->participantPHIDs !== null) {
$where[] = qsprintf(
$conn,
'p.participantPHID IN (%Ls)',
$this->participantPHIDs);
}
if (strlen($this->fulltext)) {
$where[] = qsprintf(
$conn,
'MATCH(idx.corpus) AGAINST (%s IN BOOLEAN MODE)',
$this->fulltext);
}
return $where;
}
private function loadParticipantsAndInitHandles(array $conpherences) {
$participants = id(new ConpherenceParticipant())
->loadAllWhere('conpherencePHID IN (%Ls)', array_keys($conpherences));
$map = mgroup($participants, 'getConpherencePHID');
foreach ($conpherences as $current_conpherence) {
$conpherence_phid = $current_conpherence->getPHID();
$conpherence_participants = idx(
$map,
$conpherence_phid,
array());
$conpherence_participants = mpull(
$conpherence_participants,
null,
'getParticipantPHID');
$current_conpherence->attachParticipants($conpherence_participants);
$current_conpherence->attachHandles(array());
}
return $this;
}
private function loadCoreHandles(
array $conpherences,
$method) {
$handle_phids = array();
foreach ($conpherences as $conpherence) {
$handle_phids[$conpherence->getPHID()] =
$conpherence->$method();
}
$flat_phids = array_mergev($handle_phids);
$viewer = $this->getViewer();
$handles = $viewer->loadHandles($flat_phids);
$handles = iterator_to_array($handles);
foreach ($handle_phids as $conpherence_phid => $phids) {
$conpherence = $conpherences[$conpherence_phid];
$conpherence->attachHandles(
$conpherence->getHandles() + array_select_keys($handles, $phids));
}
return $this;
}
private function loadTransactionsAndHandles(array $conpherences) {
$query = id(new ConpherenceTransactionQuery())
->setViewer($this->getViewer())
->withObjectPHIDs(array_keys($conpherences))
->needHandles(true);
// We have to flip these for the underyling query class. The semantics of
// paging are tricky business.
if ($this->afterTransactionID) {
$query->setBeforeID($this->afterTransactionID);
} else if ($this->beforeTransactionID) {
$query->setAfterID($this->beforeTransactionID);
}
if ($this->getTransactionLimit()) {
// fetch an extra for "show older" scenarios
$query->setLimit($this->getTransactionLimit() + 1);
}
$transactions = $query->execute();
$transactions = mgroup($transactions, 'getObjectPHID');
foreach ($conpherences as $phid => $conpherence) {
$current_transactions = idx($transactions, $phid, array());
$handles = array();
foreach ($current_transactions as $transaction) {
$handles += $transaction->getHandles();
}
$conpherence->attachHandles($conpherence->getHandles() + $handles);
$conpherence->attachTransactions($current_transactions);
}
return $this;
}
public function getQueryApplicationClass() {
return 'PhabricatorConpherenceApplication';
}
protected function getPrimaryTableAlias() {
return 'thread';
}
}

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