/**
* {@inheritdoc}
*/
public function walkLiteral($literal)
{
switch ($literal->type) {
case AST\Literal::STRING:
return $this->conn->quote($literal->value);
case AST\Literal::BOOLEAN:
$bool = strtolower($literal->value) == 'true' ? true : false;
$boolVal = $this->conn->getDatabasePlatform()->convertBooleans($bool);
return $boolVal;
case AST\Literal::NUMERIC:
return $literal->value;
default:
throw QueryException::invalidLiteral($literal);
}
}
