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z×Atomic transaction context manager utilities for MySQL Connector/Python.
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Provides context manager atomic_transaction() that ensures commit on success
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and rollback on error without obscuring the original exception.
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é )Úcontextmanager)ÚIterator)ÚMySQLConnectionAbstract)ÚMySQLCursorAbstractÚconnÚreturnc # ó K | j }| j « }d} |rd| _ | | j « || _ |j « y# t $ r$ d} | j « # t $ r Y w xY ww xY w# t $ r |s Y yw xY w# || _ |j « w # t $ r |s Y w w xY wxY ww)a
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Context manager that wraps a MySQL database cursor and ensures transaction
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rollback in case of exception.
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NOTE: DDL statements such as CREATE TABLE cause implicit commits. These cannot
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be managed by a cursor object. Changes made at or before a DDL statement will
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be committed and not rolled back. Callers are responsible for any cleanup of
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this type.
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This class acts as a robust, PEP 343-compliant context manager for handling
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database cursor operations on a MySQL connection. It ensures that all operations
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executed within the context block are part of the same transaction, and
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automatically calls `connection.rollback()` if an exception occurs, helping
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to maintain database integrity. On normal completion (no exception), it simply
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closes the cursor after use. Exceptions are always propagated to the caller.
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Args:
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conn: A MySQLConnectionAbstract instance.
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