/**
* Create a unique clause from the field values in this object. Used by
* {@link uniqueClause()}
* @return Clause
* @see Clause,uniqueClause
* @access private
*/
private function generateUniqueClause()
{
$key_fields = $this->primaryKeys();
$ret = new Clause();
foreach ($key_fields as $field) {
if ($field->value()) {
$ret->addCondition($this->tableName() . '.' . $field->name(), $field->value());
}
//else
/*throw new Exception('Tried to build a unique clause with uninitialised field value '.$field->name().' in class: '.$this->getClass().' in method uniqueClause()');*/
}
return $ret;
}
