public function Query::prepare in Multiversion 8.2
Prepares the basic query with proper metadata/tags and base fields.
Return value
$this Returns the called object.
Throws
\Drupal\Core\Entity\Query\QueryException Thrown if the base table does not exist.
Overrides Query::prepare
File
- src/
Entity/ Query/ Sql/ Query.php, line 59
Class
Namespace
Drupal\multiversion\Entity\Query\SqlCode
public function prepare() {
$this
->traitPrepare();
// If the prepare() method from the trait decided that we need to alter this
// query, we need to re-define the the key fields for fetchAllKeyed() as SQL
// expressions.
if ($this->sqlQuery
->getMetaData('active_workspace_id')) {
$id_field = $this->entityType
->getKey('id');
$revision_field = $this->entityType
->getKey('revision');
// Since the query is against the base table, we have to take into account
// that the revision ID might come from the workspace_association
// relationship, and, as a consequence, the revision ID field is no longer
// a simple SQL field but an expression.
$this->sqlFields = [];
$this->sqlExpressions[$revision_field] = "COALESCE(workspace_association.target_entity_revision_id, base_table.{$revision_field})";
$this->sqlExpressions[$id_field] = "base_table.{$id_field}";
}
return $this;
}