Module java.corba

Package org.omg.PortableServer

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.

Field Summary

Fields

Modifier and Type	Field	Description
static Class	_opsClass

Constructor Summary

Constructors

Constructor	Description
_ServantLocatorStub()

Method Summary

Modifier and Type	Method	Description
void	postinvoke(byte[] oid, POA adapter, String operation, Object the_cookie, Servant the_servant)	This operation is invoked whenener a servant completes a request.
Servant	preinvoke(byte[] oid, POA adapter, String operation, CookieHolder the_cookie)	This operations is used to get a servant that will be used to process the request that caused preinvoke to be called.

Methods declared in class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods declared in interface org.omg.CORBA.Object

_create_request, _create_request, _duplicate, _get_domain_managers, _get_interface_def, _get_policy, _hash, _is_a, _is_equivalent, _non_existent, _release, _request, _set_policy_override

Methods declared in class org.omg.CORBA.portable.ObjectImpl

_create_request, _create_request, _duplicate, _get_delegate, _get_domain_managers, _get_interface_def, _get_policy, _hash, _ids, _invoke, _is_a, _is_equivalent, _is_local, _non_existent, _orb, _release, _releaseReply, _request, _request, _servant_postinvoke, _servant_preinvoke, _set_delegate, _set_policy_override, equals, hashCode, toString

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.