jakarta.ejb.EntityBean Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package jakarta.ejb;
import java.rmi.RemoteException;
/**
* The EntityBean interface is implemented by every entity bean class. The container uses the EntityBean methods to
* notify the entity bean instances of the instance's life cycle events.
*
*
* Applications written to the EJB 3.0 and later APIs should use the facilities of the Jakarta Persistence API
* (jakarta.persistence) to model persistent entities.
*
*
* Note: Support for entity beans is optional as of EJB 3.2.
*
* @since EJB 1.0
*/
public interface EntityBean extends EnterpriseBean {
/**
* Set the associated entity context. The container invokes this method on an instance after the instance has been
* created.
*
*
* This method is called in an unspecified transaction context.
*
* @param ctx An EntityContext interface for the instance. The instance should store the reference to the context in an
* instance variable.
* @exception EJBException Thrown by the method to indicate a failure caused by a system-level error.
* @exception RemoteException This exception is defined in the method signature to provide backward compatibility for
* enterprise beans written for the enterprise bean 1.0 specification. Enterprise beans written for the EJB 1.1
* specification should throw the jakarta.ejb.EJBException instead of this exception. Enterprise beans written for the
* EJB2.0 and higher specifications must throw the jakarta.ejb.EJBException instead of this exception.
*/
public void setEntityContext(EntityContext ctx) throws EJBException,
RemoteException;
/**
* Unset the associated entity context. The container calls this method before removing the instance.
*
*
* This is the last method that the container invokes on the instance. The Java garbage collector will eventually invoke
* the finalize() method on the instance.
*
*
* This method is called in an unspecified transaction context.
*
* @exception EJBException Thrown by the method to indicate a failure caused by a system-level error.
* @exception RemoteException This exception is defined in the method signature to provide backward compatibility for
* enterprise beans written for the enterprise bean 1.0 specification. Enterprise beans written for the EJB 1.1
* specification should throw the jakarta.ejb.EJBException instead of this exception. Enterprise beans written for the
* EJB2.0 and higher specifications must throw the jakarta.ejb.EJBException instead of this exception.
*/
public void unsetEntityContext() throws EJBException, RemoteException;
/**
* A container invokes this method before it removes the enterprise bean object that is currently associated with the
* instance. This method is invoked when a client invokes a remove operation on the entity bean's home interface or the
* enterprise bean object's remote interface. This method transitions the instance from the ready state to the pool of
* available instances.
*
*
* This method is called in the transaction context of the remove operation.
*
* @exception RemoveException The enterprise Bean does not allow destruction of the object.
* @exception EJBException Thrown by the method to indicate a failure caused by a system-level error.
* @exception RemoteException This exception is defined in the method signature to provide backward compatibility for
* enterprise beans written for the enterprise bean 1.0 specification. Enterprise beans written for the EJB 1.1
* specification should throw the jakarta.ejb.EJBException instead of this exception. Enterprise beans written for the
* EJB2.0 and higher specifications must throw the jakarta.ejb.EJBException instead of this exception.
*/
public void ejbRemove() throws RemoveException, EJBException,
RemoteException;
/**
* A container invokes this method when the instance is taken out of the pool of available instances to become
* associated with a specific enterprise bean object. This method transitions the instance to the ready state.
*
*
* This method executes in an unspecified transaction context.
*
* @exception EJBException Thrown by the method to indicate a failure caused by a system-level error.
* @exception RemoteException This exception is defined in the method signature to provide backward compatibility for
* enterprise beans written for the enterprise bean 1.0 specification. Enterprise beans written for the EJB 1.1
* specification should throw the jakarta.ejb.EJBException instead of this exception. Enterprise beans written for the
* EJB2.0 and higher specifications must throw the jakarta.ejb.EJBException instead of this exception.
*/
public void ejbActivate() throws EJBException, RemoteException;
/**
* A container invokes this method on an instance before the instance becomes disassociated with a specific enterprise
* bean object. After this method completes, the container will place the instance into the pool of available instances.
*
*
* This method executes in an unspecified transaction context.
*
* @exception EJBException Thrown by the method to indicate a failure caused by a system-level error.
* @exception RemoteException This exception is defined in the method signature to provide backward compatibility for
* enterprise beans written for the enterprise bean 1.0 specification. Enterprise beans written for the EJB 1.1
* specification should throw the jakarta.ejb.EJBException instead of this exception. Enterprise beans written for the
* EJB2.0 and higher specifications must throw the jakarta.ejb.EJBException instead of this exception.
*/
public void ejbPassivate() throws EJBException, RemoteException;
/**
* A container invokes this method to instruct the instance to synchronize its state by loading it state from the
* underlying database.
*
*
* This method always executes in the transaction context determined by the value of the transaction attribute in the
* deployment descriptor.
*
* @exception EJBException Thrown by the method to indicate a failure caused by a system-level error.
* @exception RemoteException This exception is defined in the method signature to provide backward compatibility for
* enterprise beans written for the enterprise bean 1.0 specification. Enterprise beans written for the EJB 1.1
* specification should throw the jakarta.ejb.EJBException instead of this exception. Enterprise beans written for the
* EJB2.0 and higher specifications must throw the jakarta.ejb.EJBException instead of this exception.
*/
public void ejbLoad() throws EJBException, RemoteException;
/**
* A container invokes this method to instruct the instance to synchronize its state by storing it to the underlying
* database.
*
*
* This method always executes in the transaction context determined by the value of the transaction attribute in the
* deployment descriptor.
*
* @exception EJBException Thrown by the method to indicate a failure caused by a system-level error.
* @exception RemoteException This exception is defined in the method signature to provide backward compatibility for
* enterprise beans written for the enterprise bean 1.0 specification. Enterprise beans written for the EJB 1.1
* specification should throw the jakarta.ejb.EJBException instead of this exception. Enterprise beans written for the
* EJB2.0 and higher specifications must throw the jakarta.ejb.EJBException instead of this exception.
*/
public void ejbStore() throws EJBException, RemoteException;
}