ClickHouse/programs/odbc-bridge/ODBCBlockOutputStream.cpp
2022-04-29 10:26:35 +08:00

47 lines
1.3 KiB
C++

#include "ODBCBlockOutputStream.h"
#include <Common/logger_useful.h>
#include <IO/WriteBufferFromString.h>
#include <Interpreters/Context.h>
#include <Processors/Formats/IOutputFormat.h>
#include <Parsers/getInsertQuery.h>
namespace DB
{
ODBCSink::ODBCSink(
nanodbc::ConnectionHolderPtr connection_holder_,
const std::string & remote_database_name_,
const std::string & remote_table_name_,
const Block & sample_block_,
ContextPtr local_context_,
IdentifierQuotingStyle quoting_)
: ISink(sample_block_)
, log(&Poco::Logger::get("ODBCSink"))
, connection_holder(std::move(connection_holder_))
, db_name(remote_database_name_)
, table_name(remote_table_name_)
, sample_block(sample_block_)
, local_context(local_context_)
, quoting(quoting_)
{
description.init(sample_block);
}
void ODBCSink::consume(Chunk chunk)
{
auto block = getPort().getHeader().cloneWithColumns(chunk.detachColumns());
WriteBufferFromOwnString values_buf;
auto writer = local_context->getOutputFormat("Values", values_buf, sample_block);
writer->write(block);
std::string query = getInsertQuery(db_name, table_name, block.getColumnsWithTypeAndName(), quoting) + values_buf.str();
execute<void>(connection_holder,
[&](nanodbc::connection & connection) { execute(connection, query); });
}
}