private function appendRelatedRecordJoinCond($foreignClassName, ARFilter $filter)
{
$foreignSchema = self::getSchemaInstance($foreignClassName);
$callerClassName = get_class($this);
$referenceFieldName = "";
$id = $this->getID();
if (is_null($id)) {
throw new ARException("Related record set can be loaded only by a persisted object (so it must have a record ID)");
}
foreach ($foreignSchema->getForeignKeyList() as $name => $field) {
if ($field->getForeignClassName() == $callerClassName) {
$filter->mergeCondition(new EqualsCond(new ARFieldHandle($foreignClassName, $name), $id));
return;
}
}
throw new ARSchemaException("Reference from " . $foreignClassName . " to " . $callerClassName . " is not defined in schema");
}
