/**
* Update the SELECT clause of the query with the columns from the given table
*/
protected function selectColumnsFromTable(SQLSelect &$query, $tableClass, $columns = null)
{
// Add SQL for multi-value fields
$databaseFields = DataObject::database_fields($tableClass, false);
$compositeFields = DataObject::composite_fields($tableClass, false);
if ($databaseFields) {
foreach ($databaseFields as $k => $v) {
if ((is_null($columns) || in_array($k, $columns)) && !isset($compositeFields[$k])) {
// Update $collidingFields if necessary
if ($expressionForField = $query->expressionForField($k)) {
if (!isset($this->collidingFields[$k])) {
$this->collidingFields[$k] = array($expressionForField);
}
$this->collidingFields[$k][] = "\"{$tableClass}\".\"{$k}\"";
} else {
$query->selectField("\"{$tableClass}\".\"{$k}\"", $k);
}
}
}
}
if ($compositeFields) {
foreach ($compositeFields as $k => $v) {
if ((is_null($columns) || in_array($k, $columns)) && $v) {
$dbO = Object::create_from_string($v, $k);
$dbO->addToQuery($query);
}
}
}
}
