private function buildJoinColumn(&$select, &$join, EntityField &$entityField, Entity $parentEntity)
{
$entityTbl = "moldp_" . $entityField->getJoinColumn()->getTableName();
$select .= "," . $this->appendTableToEntityFields($entityField->getJoinColumn()) . " ";
$join .= " LEFT JOIN " . $entityField->getJoinColumn()->getTableName() . " AS " . $entityTbl . " ON " . $entityTbl . ".id =";
$join .= " moldp_" . $parentEntity->getTableName() . "." . $entityField->getColumnName();
foreach ($entityField->getJoinColumn()->getEntityFields() as $key => $subEntity) {
if ($subEntity->isEager()) {
$this->buildEntityJoin($select, $join, $subEntity, $entityField->getJoinColumn());
}
}
}