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diff --git a/src/infrastructure/storage/lisk/LiskDAOSet.php b/src/infrastructure/storage/lisk/LiskDAOSet.php
index 6d8ebc4483..9c03bc70fd 100644
--- a/src/infrastructure/storage/lisk/LiskDAOSet.php
+++ b/src/infrastructure/storage/lisk/LiskDAOSet.php
@@ -1,101 +1,102 @@
<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* You usually don't need to use this class directly as it is controlled by
* @{class:LiskDAO}. You can create it if you want to work with objects of same
* type from different sources as with one set. Let's say you want to get
* e-mails of all users involved in a revision:
*
* $users = new LiskDAOSet();
* $users->addToSet($author);
* foreach ($reviewers as $reviewer) {
* $users->addToSet($reviewer);
* }
* foreach ($ccs as $cc) {
* $users->addToSet($cc);
* }
* // Preload e-mails of all involved users and return e-mails of author.
* $author_emails = $author->loadRelatives(
* new PhabricatorUserEmail(),
* 'userPHID',
* 'getPHID');
*/
final class LiskDAOSet {
private $daos = array();
private $relatives = array();
private $subsets = array();
public function addToSet(LiskDAO $dao) {
$this->daos[] = $dao;
$dao->putInSet($this);
return $this;
}
/**
* The main purpose of this method is to break cyclic dependency.
* It removes all objects from this set and all subsets created by it.
*/
final public function clearSet() {
$this->daos = array();
$this->relatives = array();
foreach ($this->subsets as $set) {
$set->clearSet();
}
+ $this->subsets = array();
return $this;
}
/**
* See @{method:LiskDAO::loadRelatives}.
*/
public function loadRelatives(
LiskDAO $object,
$foreign_column,
$key_method = 'getID',
$where = '') {
$relatives = &$this->relatives[
get_class($object)."-{$foreign_column}-{$key_method}-{$where}"];
if ($relatives === null) {
$ids = array();
foreach ($this->daos as $dao) {
$id = $dao->$key_method();
if ($id !== null) {
$ids[$id] = $id;
}
}
if (!$ids) {
$relatives = array();
} else {
$set = new LiskDAOSet();
$this->subsets[] = $set;
$relatives = $object->putInSet($set)->loadAllWhere(
'%C IN (%Ls) %Q',
$foreign_column,
$ids,
($where != '' ? 'AND '.$where : ''));
$relatives = mgroup($relatives, 'get'.$foreign_column);
}
}
return $relatives;
}
}

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Content licensed under Creative Commons Attribution-ShareAlike 4.0 (CC-BY-SA) unless otherwise noted; code licensed under Apache 2.0 or other open source licenses. · CC BY-SA 4.0 · Apache 2.0