How to use

transactionIsActive

method

in

org.eclipse.persistence.exceptions.TransactionException

/**
 * Start the current transaction. This can only be invoked if
 * {@link #isActive()} returns <code>false</code>.
 * 
 * @throws IllegalStateException
 *             if isActive() is true.
 */
public void begin() {
  if (isActive()) {
    throw new IllegalStateException(TransactionException.transactionIsActive().getMessage());
  }
  //bug307445 : Throw IllegalStateException if entityManager was closed
  this.wrapper.getEntityManager().verifyOpen();
  // always extended
  this.wrapper.localUOW = this.wrapper.getEntityManager().getActivePersistenceContext(null);
  this.wrapper.localUOW.setShouldTerminateTransaction(false);
  this.active = true;
}