mirror of
https://github.com/ClickHouse/ClickHouse.git
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b7ef5a699c
* Get rid of non-existent vectorclass * Move FastMemcpy to contribs * Restore comments * Disable FastMemcpy on non-Linux * Fix cmake file * Don't build FastMemcpy for ARM64 * Replace FastMemcpy submodule with its contents * Fix cmake file * Move widechar_width to contrib/ * Move sumbur to contrib/ * Move consistent-hashing to contrib/ * Fix UBSan tests
54 lines
969 B
C++
54 lines
969 B
C++
#pragma once
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#include <boost/noncopyable.hpp>
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#include <mysqlxx/Connection.h>
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namespace mysqlxx
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{
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/** RAII для транзакции. При инициализации, транзакция стартует.
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* При уничтожении, если не был вызван метод commit(), будет произведёт rollback.
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*/
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class Transaction : private boost::noncopyable
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{
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public:
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Transaction(Connection & conn_)
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: conn(conn_), finished(false)
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{
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conn.query("START TRANSACTION").execute();
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}
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virtual ~Transaction()
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{
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try
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{
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if (!finished)
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rollback();
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}
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catch (...)
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{
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}
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}
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void commit()
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{
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conn.query("COMMIT").execute();
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finished = true;
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}
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void rollback()
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{
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conn.query("ROLLBACK").execute();
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finished = true;
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}
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private:
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Connection & conn;
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bool finished;
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};
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}
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