mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 21:51:57 +00:00
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
#pragma once
|
|
|
|
#include <DB/Core/NamesAndTypes.h>
|
|
#include <DB/Columns/IColumnDummy.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
class ExpressionActions;
|
|
|
|
/** A column containing a lambda expression.
|
|
* Behaves like a constant-column. Contains an expression, but not input or output data.
|
|
*/
|
|
class ColumnExpression final : public IColumnDummy
|
|
{
|
|
private:
|
|
using ExpressionActionsPtr = std::shared_ptr<ExpressionActions>;
|
|
|
|
public:
|
|
ColumnExpression(size_t s_, ExpressionActionsPtr expression_, const NamesAndTypes & arguments_, DataTypePtr return_type_, String return_name_);
|
|
ColumnExpression(size_t s_, ExpressionActionsPtr expression_, const NamesAndTypesList & arguments_, DataTypePtr return_type_, String return_name_);
|
|
|
|
std::string getName() const override;
|
|
ColumnPtr cloneDummy(size_t s_) const override;
|
|
|
|
const ExpressionActionsPtr & getExpression() const;
|
|
const DataTypePtr & getReturnType() const;
|
|
const std::string & getReturnName() const;
|
|
const NamesAndTypes & getArguments() const;
|
|
Names getArgumentNames() const;
|
|
|
|
private:
|
|
ExpressionActionsPtr expression;
|
|
NamesAndTypes arguments;
|
|
DataTypePtr return_type;
|
|
std::string return_name;
|
|
};
|
|
|
|
}
|