mirror of
https://github.com/ClickHouse/ClickHouse.git
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94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
#pragma once
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#include <DB/Core/Field.h>
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#include <DB/Core/StringRef.h>
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#include <Poco/Util/XMLConfiguration.h>
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#include <DB/Common/PODArray.h>
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#include <memory>
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#include <chrono>
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namespace DB
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{
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class IDictionarySource;
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struct IDictionaryBase;
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using DictionaryPtr = std::unique_ptr<IDictionaryBase>;
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struct DictionaryLifetime;
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struct DictionaryStructure;
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class ColumnString;
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struct IDictionaryBase
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{
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using Key = UInt64;
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virtual std::exception_ptr getCreationException() const = 0;
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virtual std::string getName() const = 0;
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virtual std::string getTypeName() const = 0;
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virtual std::size_t getBytesAllocated() const = 0;
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virtual std::size_t getQueryCount() const = 0;
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virtual double getHitRate() const = 0;
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virtual std::size_t getElementCount() const = 0;
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virtual double getLoadFactor() const = 0;
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virtual bool isCached() const = 0;
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virtual DictionaryPtr clone() const = 0;
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virtual const IDictionarySource * getSource() const = 0;
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virtual const DictionaryLifetime & getLifetime() const = 0;
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virtual const DictionaryStructure & getStructure() const = 0;
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virtual std::chrono::time_point<std::chrono::system_clock> getCreationTime() const = 0;
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virtual bool isInjective(const std::string & attribute_name) const = 0;
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virtual ~IDictionaryBase() = default;
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};
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struct IDictionary : IDictionaryBase
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{
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virtual bool hasHierarchy() const = 0;
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virtual void toParent(const PaddedPODArray<Key> & ids, PaddedPODArray<Key> & out) const = 0;
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virtual void has(const PaddedPODArray<Key> & ids, PaddedPODArray<UInt8> & out) const = 0;
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/// Methods for hierarchy.
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virtual void isInVectorVector(const PaddedPODArray<Key> & child_ids, const PaddedPODArray<Key> & ancestor_ids, PaddedPODArray<UInt8> & out) const
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{
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throw Exception("Hierarchy is not supported for " + getName() + " dictionary.", ErrorCodes::NOT_IMPLEMENTED);
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}
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virtual void isInVectorConstant(const PaddedPODArray<Key> & child_ids, const Key ancestor_id, PaddedPODArray<UInt8> & out) const
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{
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throw Exception("Hierarchy is not supported for " + getName() + " dictionary.", ErrorCodes::NOT_IMPLEMENTED);
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}
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virtual void isInConstantVector(const Key child_id, const PaddedPODArray<Key> & ancestor_ids, PaddedPODArray<UInt8> & out) const
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{
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throw Exception("Hierarchy is not supported for " + getName() + " dictionary.", ErrorCodes::NOT_IMPLEMENTED);
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}
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void isInConstantConstant(const Key child_id, const Key ancestor_id, UInt8 & out) const
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{
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PaddedPODArray<UInt8> out_arr(1);
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isInVectorConstant(PaddedPODArray<Key>(1, child_id), ancestor_id, out_arr);
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out = out_arr[0];
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}
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};
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}
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