mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-29 21:20:49 +00:00
31 lines
903 B
C++
31 lines
903 B
C++
#pragma once
|
|
|
|
#include <DataStreams/IProfilingBlockInputStream.h>
|
|
#include <Storages/MutationCommands.h>
|
|
#include <Interpreters/Context.h>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/// A stream that pulls the blocks from `input` and executes mutation commands on these blocks
|
|
/// (see Storages/MutationCommands.h for a full list).
|
|
/// Example: if mutation commands contain ALTER DELETE, this stream will delete rows that satisfy the predicate specified in the command.
|
|
class ApplyingMutationsBlockInputStream : public IProfilingBlockInputStream
|
|
{
|
|
public:
|
|
ApplyingMutationsBlockInputStream(
|
|
const BlockInputStreamPtr & input, const std::vector<MutationCommand> & commands, const Context & context);
|
|
|
|
String getName() const override { return "ApplyingMutations"; }
|
|
|
|
Block getHeader() const override;
|
|
Block getTotals() override;
|
|
|
|
private:
|
|
Block readImpl() override;
|
|
|
|
BlockInputStreamPtr impl;
|
|
};
|
|
|
|
}
|