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DifferentialChangesetQuery.php
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Sat, Aug 10, 01:34

DifferentialChangesetQuery.php
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<?php
final class DifferentialChangesetQuery
extends PhabricatorCursorPagedPolicyAwareQuery {
private $ids;
private $diffs;
private $needAttachToDiffs;
private $needHunks;
public function withIDs(array $ids) {
$this->ids = $ids;
return $this;
}
public function withDiffs(array $diffs) {
assert_instances_of($diffs, 'DifferentialDiff');
$this->diffs = $diffs;
return $this;
}
public function needAttachToDiffs($attach) {
$this->needAttachToDiffs = $attach;
return $this;
}
public function needHunks($need) {
$this->needHunks = $need;
return $this;
}
protected function willExecute() {
// If we fail to load any changesets (which is possible in the case of an
// empty commit) we'll never call didFilterPage(). Attach empty changeset
// lists now so that we end up with the right result.
if ($this->needAttachToDiffs) {
foreach ($this->diffs as $diff) {
$diff->attachChangesets(array());
}
}
}
protected function loadPage() {
$table = new DifferentialChangeset();
$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);
}
protected function willFilterPage(array $changesets) {
// First, attach all the diffs we already have. We can just do this
// directly without worrying about querying for them. When we don't have
// a diff, record that we need to load it.
if ($this->diffs) {
$have_diffs = mpull($this->diffs, null, 'getID');
} else {
$have_diffs = array();
}
$must_load = array();
foreach ($changesets as $key => $changeset) {
$diff_id = $changeset->getDiffID();
if (isset($have_diffs[$diff_id])) {
$changeset->attachDiff($have_diffs[$diff_id]);
} else {
$must_load[$key] = $changeset;
}
}
// Load all the diffs we don't have.
$need_diff_ids = mpull($must_load, 'getDiffID');
$more_diffs = array();
if ($need_diff_ids) {
$more_diffs = id(new DifferentialDiffQuery())
->setViewer($this->getViewer())
->setParentQuery($this)
->withIDs($need_diff_ids)
->execute();
$more_diffs = mpull($more_diffs, null, 'getID');
}
// Attach the diffs we loaded.
foreach ($must_load as $key => $changeset) {
$diff_id = $changeset->getDiffID();
if (isset($more_diffs[$diff_id])) {
$changeset->attachDiff($more_diffs[$diff_id]);
} else {
// We didn't have the diff, and could not load it (it does not exist,
// or we can't see it), so filter this result out.
unset($changesets[$key]);
}
}
return $changesets;
}
protected function didFilterPage(array $changesets) {
if ($this->needAttachToDiffs) {
$changeset_groups = mgroup($changesets, 'getDiffID');
foreach ($this->diffs as $diff) {
$diff_changesets = idx($changeset_groups, $diff->getID(), array());
$diff->attachChangesets($diff_changesets);
}
}
if ($this->needHunks) {
id(new DifferentialHunkQuery())
->setViewer($this->getViewer())
->setParentQuery($this)
->withChangesets($changesets)
->needAttachToChangesets(true)
->execute();
}
return $changesets;
}
private function buildWhereClause(AphrontDatabaseConnection $conn_r) {
$where = array();
if ($this->diffs !== null) {
$where[] = qsprintf(
$conn_r,
'diffID IN (%Ld)',
mpull($this->diffs, 'getID'));
}
if ($this->ids !== null) {
$where[] = qsprintf(
$conn_r,
'id IN (%Ld)',
$this->ids);
}
$where[] = $this->buildPagingClause($conn_r);
return $this->formatWhereClause($where);
}
public function getQueryApplicationClass() {
return 'PhabricatorDifferentialApplication';
}
protected function getReversePaging() {
return true;
}
}

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