/**
* @param Column $column
* @return $this
* @throws \Exception
*/
public function addColumn(Column $column)
{
if (isset($this->columns[$column->getName()])) {
throw new \Exception(sprintf('a column with the name "%s" already exists.', $column->getName()));
}
$this->columns[$column->getName()] = $column;
if ($column instanceof EntitiesCountColumn) {
$this->hasCountColumns = true;
} elseif ($column instanceof EntitiesScalarColumn) {
$this->hasScalarColumns = true;
}
if (false !== $column->getOptions()['filter']) {
$this->hasColumnFilter = true;
}
$column->setTable($this);
return $this;
}
