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DifferentialHunkQuery.php
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Sat, Aug 10, 03:24

DifferentialHunkQuery.php
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<?php
final class DifferentialHunkQuery
extends PhabricatorCursorPagedPolicyAwareQuery {
private $changesets;
private $shouldAttachToChangesets;
public function withChangesets(array $changesets) {
assert_instances_of($changesets, 'DifferentialChangeset');
$this->changesets = $changesets;
return $this;
}
public function needAttachToChangesets($attach) {
$this->shouldAttachToChangesets = $attach;
return $this;
}
protected function willExecute() {
// If we fail to load any hunks at all (for example, because all of
// the requested changesets are directories or empty files and have no
// hunks) we'll never call didFilterPage(), and thus never have an
// opportunity to attach hunks. Attach empty hunk lists now so that we
// end up with the right result.
if ($this->shouldAttachToChangesets) {
foreach ($this->changesets as $changeset) {
$changeset->attachHunks(array());
}
}
}
protected function loadPage() {
$all_results = array();
// Load modern hunks.
$table = new DifferentialModernHunk();
$conn_r = $table->establishConnection('r');
$modern_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));
$modern_results = $table->loadAllFromArray($modern_data);
// Now, load legacy hunks.
$table = new DifferentialLegacyHunk();
$conn_r = $table->establishConnection('r');
$legacy_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));
$legacy_results = $table->loadAllFromArray($legacy_data);
// Strip all the IDs off since they're not unique and nothing should be
// using them.
return array_values(array_merge($legacy_results, $modern_results));
}
protected function willFilterPage(array $hunks) {
$changesets = mpull($this->changesets, null, 'getID');
foreach ($hunks as $key => $hunk) {
$changeset = idx($changesets, $hunk->getChangesetID());
if (!$changeset) {
unset($hunks[$key]);
}
$hunk->attachChangeset($changeset);
}
return $hunks;
}
protected function didFilterPage(array $hunks) {
if ($this->shouldAttachToChangesets) {
$hunk_groups = mgroup($hunks, 'getChangesetID');
foreach ($this->changesets as $changeset) {
$hunks = idx($hunk_groups, $changeset->getID(), array());
$changeset->attachHunks($hunks);
}
}
return $hunks;
}
private function buildWhereClause(AphrontDatabaseConnection $conn_r) {
$where = array();
if (!$this->changesets) {
throw new Exception(
pht('You must load hunks via changesets, with withChangesets()!'));
}
$where[] = qsprintf(
$conn_r,
'changesetID IN (%Ld)',
mpull($this->changesets, 'getID'));
$where[] = $this->buildPagingClause($conn_r);
return $this->formatWhereClause($where);
}
public function getQueryApplicationClass() {
return 'PhabricatorDifferentialApplication';
}
protected function getReversePaging() {
return true;
}
}

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