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Java Standard Edition (SE)

_ServantLocatorStub


org.omg.PortableServer

Class _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.
    • Field Detail

      • _opsClass

        public static final Class _opsClass
    • Constructor Detail

      • _ServantLocatorStub

        public _ServantLocatorStub()
    • Method Detail

      • 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 whenener 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.
        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


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