mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-26 17:41:59 +00:00
42 lines
1022 B
C++
42 lines
1022 B
C++
#pragma once
|
|
|
|
#include <DB/Core/Block.h>
|
|
#include <DB/DataStreams/IProfilingBlockInputStream.h>
|
|
#include <DB/Dictionaries/ExternalResultDescription.h>
|
|
#include <mysqlxx/Query.h>
|
|
#include <mysqlxx/PoolWithFailover.h>
|
|
#include <string>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/// Allows processing results of a MySQL query as a sequence of Blocks, simplifies chaining
|
|
class MySQLBlockInputStream final : public IProfilingBlockInputStream
|
|
{
|
|
public:
|
|
MySQLBlockInputStream(
|
|
const mysqlxx::PoolWithFailover::Entry & entry, const std::string & query_str, const Block & sample_block,
|
|
const size_t max_block_size);
|
|
|
|
String getName() const override { return "MySQL"; }
|
|
|
|
String getID() const override;
|
|
|
|
private:
|
|
Block readImpl() override;
|
|
|
|
static void insertDefaultValue(IColumn * const column, const IColumn & sample_column)
|
|
{
|
|
column->insertFrom(sample_column, 0);
|
|
}
|
|
|
|
mysqlxx::PoolWithFailover::Entry entry;
|
|
mysqlxx::Query query;
|
|
mysqlxx::UseQueryResult result;
|
|
const size_t max_block_size;
|
|
ExternalResultDescription description;
|
|
};
|
|
|
|
}
|