mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-30 05:30:51 +00:00
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
#pragma once
|
|
#include <DB/Parsers/ASTInsertQuery.h>
|
|
#include <DB/Interpreters/Context.h>
|
|
#include <DB/IO/ConcatReadBuffer.h>
|
|
#include <DB/DataStreams/IProfilingBlockInputStream.h>
|
|
#include <DB/DataStreams/BlockIO.h>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int LOGICAL_ERROR;
|
|
}
|
|
|
|
/** Prepares an input stream which produce data containing in INSERT query
|
|
* Head of inserting data could be stored in INSERT ast directly
|
|
* Remaining (tail) data could be stored in input_buffer_tail_part
|
|
*/
|
|
class InputStreamFromASTInsertQuery : public IProfilingBlockInputStream
|
|
{
|
|
public:
|
|
|
|
InputStreamFromASTInsertQuery(const ASTPtr & ast, ReadBuffer & input_buffer_tail_part, const BlockIO & streams, Context & context);
|
|
|
|
Block readImpl() override { return res_stream->read(); }
|
|
void readPrefixImpl() override { return res_stream->readPrefix(); }
|
|
void readSuffixImpl() override { return res_stream->readSuffix(); }
|
|
|
|
String getName() const override { return "InputStreamFromASTInsertQuery"; }
|
|
String getID() const override { return "InputStreamFromASTInsertQuery(" + toString(this) + ")"; }
|
|
|
|
private:
|
|
|
|
std::unique_ptr<ReadBuffer> input_buffer_ast_part;
|
|
std::unique_ptr<ReadBuffer> input_buffer_contacenated;
|
|
|
|
BlockInputStreamPtr res_stream;
|
|
};
|
|
|
|
}
|