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46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
#pragma once
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#include <DB/Storages/StorageChunks.h>
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namespace DB
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{
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/** Ссылка на кусок данных в таблице типа Chunks.
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* Запись не поддерживается.
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*/
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class StorageChunkRef : public IStorage
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{
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public:
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static StoragePtr create(const std::string & name_, NamesAndTypesListPtr columns_, Context & context_, const std::string & source_database_name_, const std::string & source_table_name_, bool attach);
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std::string getName() const { return "ChunkRef"; }
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std::string getTableName() const { return name; }
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const NamesAndTypesList & getColumnsList() const { return *columns; }
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BlockInputStreams read(
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const Names & column_names,
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ASTPtr query,
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const Settings & settings,
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QueryProcessingStage::Enum & processed_stage,
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size_t max_block_size = DEFAULT_BLOCK_SIZE,
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unsigned threads = 1);
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void dropImpl();
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String source_database_name;
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String source_table_name;
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private:
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String name;
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NamesAndTypesListPtr columns;
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Context context;
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StorageChunkRef(const std::string & name_, NamesAndTypesListPtr columns_, Context & context_, const std::string & source_database_name_, const std::string & source_table_name_, bool attach);
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StorageChunks * getSource();
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};
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}
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