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javax.ejb.spi
public interface: HandleDelegate [javadoc | source]

The HandleDelegate interface is implemented by the EJB container. It is used by portable implementations of javax.ejb.Handle and javax.ejb.HomeHandle. It is not used by EJB components or by client components. It provides methods to serialize and deserialize EJBObject and EJBHome references to streams.

The HandleDelegate object is obtained by JNDI lookup at the reserved name "java:comp/HandleDelegate".

Method from javax.ejb.spi.HandleDelegate Summary:
readEJBHome,   readEJBObject,   writeEJBHome,   writeEJBObject
Method from javax.ejb.spi.HandleDelegate Detail:
 public EJBHome readEJBHome(ObjectInputStream istream) throws IOException, ClassNotFoundException

    Deserialize the EJBHome reference corresponding to a HomeHandle.

    readEJBHome is called from the readObject method of portable HomeHandle implementation classes. The istream object is the same object that was passed in to the HomeHandle class's readObject. When readEJBHome is called, istream must point to the location in the stream at which the EJBHome reference can be read. The container must ensure that the EJBHome reference is capable of performing invocations immediately after deserialization.

 public EJBObject readEJBObject(ObjectInputStream istream) throws IOException, ClassNotFoundException

    Deserialize the EJBObject reference corresponding to a Handle.

    readEJBObject is called from the readObject method of portable Handle implementation classes. The istream object is the same object that was passed in to the Handle class's readObject. When readEJBObject is called, istream must point to the location in the stream at which the EJBObject reference can be read. The container must ensure that the EJBObject reference is capable of performing invocations immediately after deserialization.

 public  void writeEJBHome(EJBHome ejbHome,
    ObjectOutputStream ostream) throws IOException

    Serialize the EJBHome reference corresponding to a HomeHandle.

    This method is called from the writeObject method of portable HomeHandle implementation classes. The ostream object is the same object that was passed in to the Handle class's writeObject.

 public  void writeEJBObject(EJBObject ejbObject,
    ObjectOutputStream ostream) throws IOException

    Serialize the EJBObject reference corresponding to a Handle.

    This method is called from the writeObject method of portable Handle implementation classes. The ostream object is the same object that was passed in to the Handle class's writeObject.