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038241b6ed
Note, that it cannot be done w/o new extension, since index does not have any header. v2: use IDisk interface for existence check v3: remove extra file existence check v4: fix MATERIALIZE INDEX
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
#pragma once
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#include <Storages/MergeTree/MergeTreeIndices.h>
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#include <Storages/MergeTree/MergeTreeData.h>
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#include <Storages/MergeTree/KeyCondition.h>
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#include <memory>
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namespace DB
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{
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struct MergeTreeIndexGranuleMinMax final : public IMergeTreeIndexGranule
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{
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MergeTreeIndexGranuleMinMax(const String & index_name_, const Block & index_sample_block_);
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MergeTreeIndexGranuleMinMax(
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const String & index_name_,
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const Block & index_sample_block_,
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std::vector<Range> && hyperrectangle_);
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~MergeTreeIndexGranuleMinMax() override = default;
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void serializeBinary(WriteBuffer & ostr) const override;
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void deserializeBinary(ReadBuffer & istr, MergeTreeIndexVersion version) override;
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bool empty() const override { return hyperrectangle.empty(); }
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String index_name;
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Block index_sample_block;
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std::vector<Range> hyperrectangle;
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};
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struct MergeTreeIndexAggregatorMinMax final : IMergeTreeIndexAggregator
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{
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MergeTreeIndexAggregatorMinMax(const String & index_name_, const Block & index_sample_block);
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~MergeTreeIndexAggregatorMinMax() override = default;
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bool empty() const override { return hyperrectangle.empty(); }
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MergeTreeIndexGranulePtr getGranuleAndReset() override;
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void update(const Block & block, size_t * pos, size_t limit) override;
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String index_name;
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Block index_sample_block;
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std::vector<Range> hyperrectangle;
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};
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class MergeTreeIndexConditionMinMax final : public IMergeTreeIndexCondition
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{
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public:
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MergeTreeIndexConditionMinMax(
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const IndexDescription & index,
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const SelectQueryInfo & query,
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ContextPtr context);
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bool alwaysUnknownOrTrue() const override;
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bool mayBeTrueOnGranule(MergeTreeIndexGranulePtr idx_granule) const override;
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~MergeTreeIndexConditionMinMax() override = default;
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private:
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DataTypes index_data_types;
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KeyCondition condition;
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};
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class MergeTreeIndexMinMax : public IMergeTreeIndex
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{
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public:
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MergeTreeIndexMinMax(const IndexDescription & index_)
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: IMergeTreeIndex(index_)
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{}
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~MergeTreeIndexMinMax() override = default;
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MergeTreeIndexGranulePtr createIndexGranule() const override;
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MergeTreeIndexAggregatorPtr createIndexAggregator() const override;
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MergeTreeIndexConditionPtr createIndexCondition(
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const SelectQueryInfo & query, ContextPtr context) const override;
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bool mayBenefitFromIndexForIn(const ASTPtr & node) const override;
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const char* getSerializedFileExtension() const override { return ".idx2"; }
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MergeTreeIndexFormat getDeserializedFormat(const DiskPtr disk, const std::string & path_prefix) const override;
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};
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}
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