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phorge/src/applications/diffusion/query/diff/base/DiffusionDiffQuery.php
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DiffusionDiffQuery.php
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<?php
/*
* Copyright 2011 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.
*/
abstract class DiffusionDiffQuery {
private $request;
protected $renderingReference;
final private function __construct() {
// <private>
}
final public static function newFromDiffusionRequest(
DiffusionRequest $request) {
$repository = $request->getRepository();
switch ($repository->getVersionControlSystem()) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
$class = 'DiffusionGitDiffQuery';
break;
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
$class = 'DiffusionMercurialDiffQuery';
break;
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
$class = 'DiffusionSvnDiffQuery';
break;
default:
throw new Exception("Unsupported VCS!");
}
PhutilSymbolLoader::loadClass($class);
$query = new $class();
$query->request = $request;
return $query;
}
final protected function getRequest() {
return $this->request;
}
final public function getRenderingReference() {
return $this->renderingReference;
}
final public function loadChangeset() {
return $this->executeQuery();
}
abstract protected function executeQuery();
protected function getEffectiveCommit() {
$drequest = $this->getRequest();
$modified_query = DiffusionLastModifiedQuery::newFromDiffusionRequest(
$drequest);
list($commit) = $modified_query->loadLastModification();
if (!$commit) {
// TODO: Improve error messages here.
return null;
}
return $commit->getCommitIdentifier();
}
}

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