mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-05 08:00:51 +00:00
38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
#pragma once
|
|
|
|
#include <optional>
|
|
#include <ext/shared_ptr_helper.h>
|
|
#include <Storages/IStorage.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
/* Generates random data for given schema.
|
|
*/
|
|
class StorageGenerateRandom final : public ext::shared_ptr_helper<StorageGenerateRandom>, public IStorage
|
|
{
|
|
friend struct ext::shared_ptr_helper<StorageGenerateRandom>;
|
|
public:
|
|
std::string getName() const override { return "GenerateRandom"; }
|
|
|
|
Pipe read(
|
|
const Names & column_names,
|
|
const StorageMetadataPtr & /*metadata_snapshot*/,
|
|
const SelectQueryInfo & query_info,
|
|
const Context & context,
|
|
QueryProcessingStage::Enum processed_stage,
|
|
size_t max_block_size,
|
|
unsigned num_streams) override;
|
|
|
|
private:
|
|
UInt64 max_array_length = 10;
|
|
UInt64 max_string_length = 10;
|
|
UInt64 random_seed = 0;
|
|
|
|
protected:
|
|
StorageGenerateRandom(const StorageID & table_id_, const ColumnsDescription & columns_,
|
|
UInt64 max_array_length, UInt64 max_string_length, std::optional<UInt64> random_seed);
|
|
};
|
|
|
|
}
|