The spread of affairs

The type of transaction propagation behavior	Explanation
PROPAGATION_REQUIRED	If no transaction creates a new transaction, if there is already a transaction, added to this transaction. This is the most common choice.
PROPAGATION_SUPPORTS	Support the current transaction, if no transaction is executed in a non-transactional way.
PROPAGATION_MANDATORY	Use the current transaction, if no transaction, throw an exception.
PROPAGATION_REQUIRES_NEW	New Transaction, if the current transaction exists, the current transaction pending.
PROPAGATION_NOT_SUPPORTED	Perform operations to a non-transactional way, if the current transaction exists, put the current transaction pending.
PROPAGATION_NEVER	Performed in a non-transactional way, if the current transaction exists, an exception is thrown.
PROPAGATION_NESTED	If the current transaction exists, it is executed within nested transactions. If no transaction with PROPAGATION_REQUIRED similar operation is performed.