Enum Propagation

Enum Constant Detail

• REQUIRED

  public static final Propagation REQUIRED

  Support a current transaction, create a new one if none exists. Analogous to EJB transaction attribute of the same name.

  This is the default setting of a transaction annotation.

• SUPPORTS

  public static final Propagation SUPPORTS

  Support a current transaction, execute non-transactionally if none exists. Analogous to EJB transaction attribute of the same name.

  Note: For transaction managers with transaction synchronization, SUPPORTS is slightly different from no transaction at all, as it defines a transaction scope that synchronization will apply for. As a consequence, the same resources (JDBC Connection, Hibernate Session, etc) will be shared for the entire specified scope. Note that this depends on the actual synchronization configuration of the transaction manager.

  See Also:

  AbstractPlatformTransactionManager.setTransactionSynchronization(int)

• MANDATORY

  public static final Propagation MANDATORY

  Support a current transaction, throw an exception if none exists. Analogous to EJB transaction attribute of the same name.

• REQUIRES_NEW

  public static final Propagation REQUIRES_NEW

  Create a new transaction, and suspend the current transaction if one exists. Analogous to the EJB transaction attribute of the same name.

  NOTE: Actual transaction suspension will not work out-of-the-box on all transaction managers. This in particular applies to JtaTransactionManager, which requires the javax.transaction.TransactionManager to be made available to it (which is server-specific in standard Java EE).

  See Also:

  JtaTransactionManager.setTransactionManager(javax.transaction.TransactionManager)

• NOT_SUPPORTED

  public static final Propagation NOT_SUPPORTED

  Execute non-transactionally, suspend the current transaction if one exists. Analogous to EJB transaction attribute of the same name.

  NOTE: Actual transaction suspension will not work out-of-the-box on all transaction managers. This in particular applies to JtaTransactionManager, which requires the javax.transaction.TransactionManager to be made available to it (which is server-specific in standard Java EE).

  See Also:

  JtaTransactionManager.setTransactionManager(javax.transaction.TransactionManager)

• NEVER

  public static final Propagation NEVER

  Execute non-transactionally, throw an exception if a transaction exists. Analogous to EJB transaction attribute of the same name.

• NESTED

  public static final Propagation NESTED

  Execute within a nested transaction if a current transaction exists, behave like REQUIRED otherwise. There is no analogous feature in EJB.

  Note: Actual creation of a nested transaction will only work on specific transaction managers. Out of the box, this only applies to the JDBC DataSourceTransactionManager. Some JTA providers might support nested transactions as well.

  See Also:

  DataSourceTransactionManager

Method Detail

• values

  public static Propagation[] values()

  Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

  for (Propagation c : Propagation.values())
      System.out.println(c);
  

  Returns:

  an array containing the constants of this enum type, in the order they are declared

• valueOf

  public static Propagation valueOf​(String name)

  Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

  Parameters:

  name - the name of the enum constant to be returned.

  Returns:

  the enum constant with the specified name

  Throws:

  IllegalArgumentException - if this enum type has no constant with the specified name

  NullPointerException - if the argument is null

• value

  public int value()