ClickHouse/dbms/src/Storages/StorageSystemOne.cpp
2012-05-08 11:19:00 +00:00

38 lines
787 B
C++

#include <DB/Core/Exception.h>
#include <DB/Core/ErrorCodes.h>
#include <DB/Columns/ColumnsNumber.h>
#include <DB/DataTypes/DataTypesNumberFixed.h>
#include <DB/DataStreams/OneBlockInputStream.h>
#include <DB/Storages/StorageSystemOne.h>
namespace DB
{
StorageSystemOne::StorageSystemOne(const std::string & name_)
: name(name_)
{
columns.push_back(NameAndTypePair("dummy", new DataTypeUInt8));
}
BlockInputStreams StorageSystemOne::read(
const Names & column_names, ASTPtr query, size_t max_block_size, unsigned max_threads)
{
check(column_names);
Block block;
ColumnWithNameAndType col;
col.name = "dummy";
col.type = new DataTypeUInt8;
col.column = new ColumnConstUInt8(1, 0);
block.insert(col);
return BlockInputStreams(1, new OneBlockInputStream(block));
}
}