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45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
#include <DB/Core/Exception.h>
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#include <DB/Core/ErrorCodes.h>
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#include <DB/Columns/ColumnsNumber.h>
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#include <DB/DataTypes/DataTypesNumberFixed.h>
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#include <DB/DataStreams/OneBlockInputStream.h>
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#include <DB/Storages/StorageSystemOne.h>
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namespace DB
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{
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StorageSystemOne::StorageSystemOne(const std::string & name_)
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: name(name_)
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{
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columns.push_back(NameAndTypePair("dummy", new DataTypeUInt8));
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}
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StoragePtr StorageSystemOne::create(const std::string & name_)
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{
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return (new StorageSystemOne(name_))->thisPtr();
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}
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BlockInputStreams StorageSystemOne::read(
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const Names & column_names, ASTPtr query, const Settings & settings,
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QueryProcessingStage::Enum & processed_stage, size_t max_block_size, unsigned threads)
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{
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check(column_names);
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processed_stage = QueryProcessingStage::FetchColumns;
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Block block;
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ColumnWithNameAndType col;
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col.name = "dummy";
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col.type = new DataTypeUInt8;
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col.column = new ColumnConstUInt8(1, 0);
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block.insert(col);
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return BlockInputStreams(1, new OneBlockInputStream(block));
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}
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}
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