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PhabricatorFeedQuery.php
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Created
Fri, Apr 25, 08:21

PhabricatorFeedQuery.php
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<?php
final class PhabricatorFeedQuery
extends PhabricatorCursorPagedPolicyAwareQuery {
private $filterPHIDs;
private $chronologicalKeys;
public function setFilterPHIDs(array $phids) {
$this->filterPHIDs = $phids;
return $this;
}
public function withChronologicalKeys(array $keys) {
$this->chronologicalKeys = $keys;
return $this;
}
protected function loadPage() {
$story_table = new PhabricatorFeedStoryData();
$conn = $story_table->establishConnection('r');
$data = queryfx_all(
$conn,
'SELECT story.* FROM %T story %Q %Q %Q %Q %Q',
$story_table->getTableName(),
$this->buildJoinClause($conn),
$this->buildWhereClause($conn),
$this->buildGroupClause($conn),
$this->buildOrderClause($conn),
$this->buildLimitClause($conn));
return $data;
}
protected function willFilterPage(array $data) {
return PhabricatorFeedStory::loadAllFromRows($data, $this->getViewer());
}
private function buildJoinClause(AphrontDatabaseConnection $conn_r) {
// NOTE: We perform this join unconditionally (even if we have no filter
// PHIDs) to omit rows which have no story references. These story data
// rows are notifications or realtime alerts.
$ref_table = new PhabricatorFeedStoryReference();
return qsprintf(
$conn_r,
'JOIN %T ref ON ref.chronologicalKey = story.chronologicalKey',
$ref_table->getTableName());
}
private function buildWhereClause(AphrontDatabaseConnection $conn_r) {
$where = array();
if ($this->filterPHIDs) {
$where[] = qsprintf(
$conn_r,
'ref.objectPHID IN (%Ls)',
$this->filterPHIDs);
}
if ($this->chronologicalKeys) {
// NOTE: We want to use integers in the query so we can take advantage
// of keys, but can't use %d on 32-bit systems. Make sure all the keys
// are integers and then format them raw.
$keys = $this->chronologicalKeys;
foreach ($keys as $key) {
if (!ctype_digit($key)) {
throw new Exception("Key '{$key}' is not a valid chronological key!");
}
}
$where[] = qsprintf(
$conn_r,
'ref.chronologicalKey IN (%Q)',
implode(', ', $keys));
}
$where[] = $this->buildPagingClause($conn_r);
return $this->formatWhereClause($where);
}
private function buildGroupClause(AphrontDatabaseConnection $conn_r) {
if ($this->filterPHIDs) {
return qsprintf($conn_r, 'GROUP BY ref.chronologicalKey');
} else {
return qsprintf($conn_r, 'GROUP BY story.chronologicalKey');
}
}
protected function getDefaultOrderVector() {
return array('key');
}
public function getOrderableColumns() {
$table = ($this->filterPHIDs ? 'ref' : 'story');
return array(
'key' => array(
'table' => $table,
'column' => 'chronologicalKey',
'type' => 'int',
'unique' => true,
),
);
}
protected function getPagingValueMap($cursor, array $keys) {
return array(
'key' => $cursor,
);
}
protected function getPagingValue($item) {
if ($item instanceof PhabricatorFeedStory) {
return $item->getChronologicalKey();
}
return $item['chronologicalKey'];
}
public function getQueryApplicationClass() {
return 'PhabricatorFeedApplication';
}
}

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