protected function getInternalColumns()
{
if (is_null($this->columns)) {
$this->columns = array();
$keyLength = $this->getKeyLength();
if (is_null($keyLength)) {
throw new ErrorException("Cannot create meta-table-schema for indicies when no key-length is specified!");
}
$columnPage = new Column();
for ($i = 1; $i <= 33; $i++) {
$columnPage->setName("ref{$i}");
$columnPage->setDataType(DataType::INT());
$columnPage->setLength($keyLength);
$columnPage->setExtraFlags(Column::EXTRA_PRIMARY_KEY);
$this->columns[] = clone $columnPage;
$columnPage->setName("val{$i}");
$columnPage->setDataType(DataType::INT());
$columnPage->setLength($keyLength);
$columnPage->setExtraFlags(Column::EXTRA_PRIMARY_KEY);
$this->columns[] = clone $columnPage;
$columnPage->setName("row{$i}");
$columnPage->setDataType(DataType::INT());
$columnPage->setLength($keyLength);
$columnPage->setExtraFlags(Column::EXTRA_PRIMARY_KEY);
$this->columns[] = clone $columnPage;
}
}
return $this->columns;
}
