javax.ejb.SessionSynchronization Maven / Gradle / Ivy
package javax.ejb;
import java.rmi.RemoteException;
/**
* The SessionSynchronization interface allows a session Bean instance
* to be notified by its container of transaction boundaries.
*
* An session Bean class is not required to implement this interface. A
* session Bean class should implement this interface only if it wishes to
* synchronize its state with the transactions.
*/
public interface SessionSynchronization {
/**
* The afterBegin method notifies a session Bean instance that a new transaction has started, and that
* the subsequent business methods on the instance will be invoked in the context of the transaction.
*
* The instance can use this method, for example, to read data from a database and cache the data in
* the instance fields.
*
* This method executes in the proper transaction context.
*
* @exception EJBException - Thrown by the method to indicate a failure caused by a system-level error.
* @exception java.rmi.RemoteException - This exception is defined in the method signature to provide backward
* compatibility for enterprise beans written for the EJB 1.0 specification. Enterprise beans written for the
* EJB 1.1 and higher specifications should throw the javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB 2.0 and higher specifications must not throw the java.rmi.RemoteException.
*/
public void afterBegin() throws EJBException, RemoteException;
/**
* The beforeCompletion method notifies a session Bean instance that a transaction is about to be committed.
* The instance can use this method, for example, to write any cached data to a database.
*
* This method executes in the proper transaction context.
*
* Note: The instance may still cause the container to rollback the transaction by invoking the
* setRollbackOnly() method on the instance context, or by throwing an exception.
*
* @exception EJBException - Thrown by the method to indicate a failure caused by a system-level error.
* @exception java.rmi.RemoteException - This exception is defined in the method signature to provide backward
* compatibility for enterprise beans written for the EJB 1.0 specification. Enterprise beans written for the
* EJB 1.1 and higher specifications should throw the javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB 2.0 and higher specifications must not throw the java.rmi.RemoteException.
*/
public void beforeCompletion() throws EJBException, RemoteException;
/**
* The afterCompletion method notifies a session Bean instance that a transaction commit protocol has
* completed, and tells the instance whether the transaction has been committed or rolled back.
*
* This method executes with no transaction context.
*
* This method executes with no transaction context.
*
* @param committed - True if the transaction has been committed, false if is has been rolled back.
* @exception EJBException - Thrown by the method to indicate a failure caused by a system-level error.
* @exception java.rmi.RemoteException - This exception is defined in the method signature to provide backward
* compatibility for enterprise beans written for the EJB 1.0 specification. Enterprise beans written for the
* EJB 1.1 and higher specifications should throw the javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB 2.0 and higher specifications must not throw the java.rmi.RemoteException.
*/
public void afterCompletion(boolean committed) throws EJBException, RemoteException;
}