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#pragma once
#include <Parsers/IAST.h>
#include <Storages/DataDestinationType.h>
#include <Storages/TTLMode.h>
namespace DB
{
/** Element of TTL expression.
*/
class ASTTTLElement : public IAST
{
public:
TTLMode mode;
DataDestinationType destination_type;
String destination_name;
bool if_exists = false;
ASTs group_by_key;
ASTs group_by_assignments;
ASTPtr recompression_codec;
ASTTTLElement(TTLMode mode_, DataDestinationType destination_type_, const String & destination_name_, bool if_exists_)
: mode(mode_)
, destination_type(destination_type_)
, destination_name(destination_name_)
, if_exists(if_exists_)
, ttl_expr_pos(-1)
, where_expr_pos(-1)
{
}
String getID(char) const override { return "TTLElement"; }
ASTPtr clone() const override;
ASTPtr ttl() const { return getExpression(ttl_expr_pos); }
ASTPtr where() const { return getExpression(where_expr_pos); }
void setTTL(ASTPtr && ast) { setExpression(ttl_expr_pos, std::forward<ASTPtr>(ast)); }
void setWhere(ASTPtr && ast) { setExpression(where_expr_pos, std::forward<ASTPtr>(ast)); }
protected:
void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override;
private:
int ttl_expr_pos;
int where_expr_pos;
void setExpression(int & pos, ASTPtr && ast);
ASTPtr getExpression(int pos, bool clone = false) const;
};
}
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