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#pragma once
#include <Processors/IAccumulatingTransform.h>
#include <Storages/MergeTree/MergeTreeData.h>
#include <Storages/MergeTree/IMergeTreeDataPart.h>
#include <Core/Block.h>
#include <Storages/MergeTree/MergeTreeDataPartTTLInfo.h>
#include <Processors/TTL/ITTLAlgorithm.h>
#include <Common/DateLUT.h>
namespace DB
{
class TTLCalcTransform : public IAccumulatingTransform
{
public:
TTLCalcTransform(
const Block & header_,
const MergeTreeData & storage_,
const StorageMetadataPtr & metadata_snapshot_,
const MergeTreeData::MutableDataPartPtr & data_part_,
time_t current_time,
bool force_
);
String getName() const override { return "TTL_CALC"; }
Status prepare() override;
protected:
void consume(Chunk chunk) override;
Chunk generate() override;
/// Finalizes ttl infos and updates data part
void finalize();
private:
std::vector<TTLAlgorithmPtr> algorithms;
/// ttl_infos and empty_columns are updating while reading
const MergeTreeData::MutableDataPartPtr & data_part;
Poco::Logger * log;
};
}
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