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DiffusionCommitQuery.php
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Sun, May 25, 15:48

DiffusionCommitQuery.php
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<?php
final class DiffusionCommitQuery
extends PhabricatorCursorPagedPolicyAwareQuery {
private $ids;
private $identifiers;
private $phids;
private $defaultRepository;
private $identifierMap;
/**
* Load commits by partial or full identifiers, e.g. "rXab82393", "rX1234",
* or "a9caf12". When an identifier matches multiple commits, they will all
* be returned; callers should be prepared to deal with more results than
* they queried for.
*/
public function withIdentifiers(array $identifiers) {
$this->identifiers = $identifiers;
return $this;
}
/**
* If a default repository is provided, ambiguous commit identifiers will
* be assumed to belong to the default repository.
*
* For example, "r123" appearing in a commit message in repository X is
* likely to be unambiguously "rX123". Normally the reference would be
* considered ambiguous, but if you provide a default repository it will
* be correctly resolved.
*/
public function withDefaultRepository(PhabricatorRepository $repository) {
$this->defaultRepository = $repository;
return $this;
}
public function withIDs(array $ids) {
$this->ids = $ids;
return $this;
}
public function withPHIDs(array $phids) {
$this->phids = $phids;
return $this;
}
public function getIdentifierMap() {
if ($this->identifierMap === null) {
throw new Exception(
"You must execute() the query before accessing the identifier map.");
}
return $this->identifierMap;
}
protected function loadPage() {
if ($this->identifierMap === null) {
$this->identifierMap = array();
}
$table = new PhabricatorRepositoryCommit();
$conn_r = $table->establishConnection('r');
$data = queryfx_all(
$conn_r,
'SELECT * FROM %T %Q %Q %Q',
$table->getTableName(),
$this->buildWhereClause($conn_r),
$this->buildOrderClause($conn_r),
$this->buildLimitClause($conn_r));
return $table->loadAllFromArray($data);
}
public function willFilterPage(array $commits) {
$repository_ids = mpull($commits, 'getRepositoryID', 'getRepositoryID');
$repos = id(new PhabricatorRepositoryQuery())
->setViewer($this->getViewer())
->withIDs($repository_ids)
->execute();
foreach ($commits as $key => $commit) {
$repo = idx($repos, $commit->getRepositoryID());
if ($repo) {
$commit->attachRepository($repo);
} else {
unset($commits[$key]);
}
}
if ($this->identifiers !== null) {
$ids = array_fuse($this->identifiers);
$min_qualified = PhabricatorRepository::MINIMUM_QUALIFIED_HASH;
$result = array();
foreach ($commits as $commit) {
$prefix = 'r'.$commit->getRepository()->getCallsign();
$suffix = $commit->getCommitIdentifier();
if ($commit->getRepository()->isSVN()) {
if (isset($ids[$prefix.$suffix])) {
$result[$prefix.$suffix][] = $commit;
}
} else {
// This awkward contruction is so we can link the commits up in O(N)
// time instead of O(N^2).
for ($ii = $min_qualified; $ii <= strlen($suffix); $ii++) {
$part = substr($suffix, 0, $ii);
if (isset($ids[$prefix.$part])) {
$result[$prefix.$part][] = $commit;
}
if (isset($ids[$part])) {
$result[$part][] = $commit;
}
}
}
}
foreach ($result as $identifier => $matching_commits) {
if (count($matching_commits) == 1) {
$result[$identifier] = head($matching_commits);
} else {
// This reference is ambiguous (it matches more than one commit) so
// don't link it
unset($result[$identifier]);
}
}
$this->identifierMap += $result;
}
return $commits;
}
private function buildWhereClause(AphrontDatabaseConnection $conn_r) {
$where = array();
if ($this->identifiers) {
$min_unqualified = PhabricatorRepository::MINIMUM_UNQUALIFIED_HASH;
$min_qualified = PhabricatorRepository::MINIMUM_QUALIFIED_HASH;
$refs = array();
$bare = array();
foreach ($this->identifiers as $identifier) {
$matches = null;
preg_match('/^(?:r([A-Z]+))?(.*)$/', $identifier, $matches);
$repo = nonempty($matches[1], null);
$identifier = nonempty($matches[2], null);
if ($repo === null) {
if ($this->defaultRepository) {
$repo = $this->defaultRepository->getCallsign();
}
}
if ($repo === null) {
if (strlen($identifier) < $min_unqualified) {
continue;
}
$bare[] = $identifier;
} else {
$refs[] = array(
'callsign' => $repo,
'identifier' => $identifier,
);
}
}
$sql = array();
foreach ($bare as $identifier) {
$sql[] = qsprintf(
$conn_r,
'(commitIdentifier LIKE %> AND LENGTH(commitIdentifier) = 40)',
$identifier);
}
if ($refs) {
$callsigns = ipull($refs, 'callsign');
$repos = id(new PhabricatorRepositoryQuery())
->setViewer($this->getViewer())
->withCallsigns($callsigns)
->execute();
$repos = mpull($repos, null, 'getCallsign');
foreach ($refs as $key => $ref) {
$repo = idx($repos, $ref['callsign']);
if (!$repo) {
continue;
}
if ($repo->isSVN()) {
if (!ctype_digit($ref['identifier'])) {
continue;
}
$sql[] = qsprintf(
$conn_r,
'(repositoryID = %d AND commitIdentifier = %s)',
$repo->getID(),
// NOTE: Because the 'commitIdentifier' column is a string, MySQL
// ignores the index if we hand it an integer. Hand it a string.
// See T3377.
(int)$ref['identifier']);
} else {
if (strlen($ref['identifier']) < $min_qualified) {
continue;
}
$sql[] = qsprintf(
$conn_r,
'(repositoryID = %d AND commitIdentifier LIKE %>)',
$repo->getID(),
$ref['identifier']);
}
}
}
if (!$sql) {
// If we discarded all possible identifiers (e.g., they all referenced
// bogus repositories or were all too short), make sure the query finds
// nothing.
throw new PhabricatorEmptyQueryException('No commit identifiers.');
}
$where[] = '('.implode(' OR ', $sql).')';
}
if ($this->ids) {
$where[] = qsprintf(
$conn_r,
'id IN (%Ld)',
$this->ids);
}
if ($this->phids) {
$where[] = qsprintf(
$conn_r,
'phid IN (%Ls)',
$this->phids);
}
return $this->formatWhereClause($where);
}
public function didFilterResults(array $filtered) {
if ($this->identifierMap) {
foreach ($this->identifierMap as $name => $commit) {
if (isset($filtered[$commit->getPHID()])) {
unset($this->identifierMap[$name]);
}
}
}
}
public function getQueryApplicationClass() {
return 'PhabricatorApplicationDiffusion';
}
}

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