Class _ServantLocatorStub

java.lang.Object
org.omg.CORBA.portable.ObjectImpl
org.omg.PortableServer._ServantLocatorStub
All Implemented Interfaces:
Serializable, Object, IDLEntity, ServantLocator, ServantLocatorOperations, ServantManager, ServantManagerOperations

public class _ServantLocatorStub extends ObjectImpl implements ServantLocator
When the POA has the NON_RETAIN policy it uses servant managers that are ServantLocators. Because the POA knows that the servant returned by this servant manager will be used only for a single request, it can supply extra information to the servant manager's operations and the servant manager's pair of operations may be able to cooperate to do something different than a ServantActivator. When the POA uses the ServantLocator interface, immediately after performing the operation invocation on the servant returned by preinvoke, the POA will invoke postinvoke on the servant manager, passing the ObjectId value and the Servant value as parameters (among others). This feature may be used to force every request for objects associated with a POA to be mediated by the servant manager.
See Also:
  • Field Details

    • _opsClass

      public static final Class _opsClass
    • __ids

      private static String[] __ids
  • Constructor Details

    • _ServantLocatorStub

      public _ServantLocatorStub()
  • Method Details

    • preinvoke

      public Servant preinvoke(byte[] oid, POA adapter, String operation, CookieHolder the_cookie) throws ForwardRequest
      This operations is used to get a servant that will be used to process the request that caused preinvoke to be called.
      Specified by:
      preinvoke in interface ServantLocatorOperations
      Parameters:
      oid - the object id associated with object on which the request was made.
      adapter - the reference for POA in which the object is being activated.
      operation - the operation name.
      the_cookie - an opaque value that can be set by the servant manager to be used during postinvoke.
      Returns:
      Servant used to process incoming request.
      Throws:
      ForwardRequest - to indicate to the ORB that it is responsible for delivering the current request and subsequent requests to the object denoted in the forward_reference member of the exception.
    • postinvoke

      public void postinvoke(byte[] oid, POA adapter, String operation, Object the_cookie, Servant the_servant)
      This operation is invoked whenever a servant completes a request.
      Specified by:
      postinvoke in interface ServantLocatorOperations
      Parameters:
      oid - the object id ssociated with object on which the request was made.
      adapter - the reference for POA in which the object was active.
      operation - the operation to invoke
      the_cookie - an opaque value that contains the data set by preinvoke.
      the_servant - reference to the servant that is associated with the object.
    • _ids

      public String[] _ids()
      Description copied from class: ObjectImpl
      Retrieves a string array containing the repository identifiers supported by this ObjectImpl object. For example, for a stub, this method returns information about all the interfaces supported by the stub.
      Specified by:
      _ids in class ObjectImpl
      Returns:
      the array of all repository identifiers supported by this ObjectImpl instance
    • readObject

      private void readObject(ObjectInputStream s) throws IOException
      Throws:
      IOException
    • writeObject

      private void writeObject(ObjectOutputStream s) throws IOException
      Throws:
      IOException