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gnu.CORBA.Poa

Class gnuPOAManager

Implemented Interfaces:
IDLEntity, Object, POAManager, POAManagerOperations, Serializable
public class gnuPOAManager
extends LocalObject
implements POAManager
The implementation of the POA manager. The manager is a controlled switch that can change its states in response to the method calls and throw exceptions if the requested change is invalid. It is possible to check the state this switch. It does not do anything else.

Method Summary

void
activate()
Turns the associated POAs into active state, allowing them to receive and process requests.
void
addPoa(gnuPOA poa)
Add the POA that will be controlled by this manager.
void
deactivate(boolean etherealize_objects, boolean wait_for_completion)
Turns the asociated POAs into inactive state.
void
discard_requests(boolean wait_for_completion)
Turns the associated POAs into discaring state.
State
get_state()
Get the state of the POA manager.
void
hold_requests(boolean wait_for_completion)
Turns the associated POAs into holding state.
void
notifyInterceptors(int new_state)
Notify CORBA 3.0 interceptors about the status change.
void
poaDestroyed(gnuPOA poa)
This method is called when POA is destryed.
void
removePOA(gnuPOA poa)
Remove the POA, releasing it from the control of this manager.
void
waitForIdle()
Suspend the current thread while at least one of the associated POA is actively processing some requests.

Methods inherited from class org.omg.CORBA.LocalObject

_create_request, _create_request, _duplicate, _get_domain_managers, _get_interface, _get_interface_def, _get_policy, _hash, _invoke, _is_a, _is_equivalent, _is_local, _non_existent, _orb, _release, _releaseReply, _request, _request, _servant_postinvoke, _set_policy_override, validate_connection

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

activate

public void activate()
            throws AdapterInactive
Turns the associated POAs into active state, allowing them to receive and process requests.
Specified by:
activate in interface POAManagerOperations
Throws:
AdapterInactive - if the POAs are in the inactive state. If once inactivated, the POA cannot be activated again. This method can only be called to leave the holding or discarding state.

addPoa

public void addPoa(gnuPOA poa)
Add the POA that will be controlled by this manager.
Parameters:
poa - the POA.

deactivate

public void deactivate(boolean etherealize_objects,
                       boolean wait_for_completion)
            throws AdapterInactive
Turns the asociated POAs into inactive state. The POAs in the incative state will reject new requests. If the POA is once inactivated, it cannot be activated again. The operation is used when the associated POAs are to be shut down.
Specified by:
deactivate in interface POAManagerOperations
Parameters:
etherealize_objects - if true, the servant managers of the associated POAs, having RETAIN and USE_SERVANT_MANAGER policies, will receive a call of ServantActivatorOperations.etherealize.
wait_for_completion - if true, the method call suspends the current thread till POAs complete the requests they are currently processing. If false, the method returns immediately.
Throws:
AdapterInactive - if the POAs are already in the inactive state.
See Also:
POAOperations.destroy

discard_requests

public void discard_requests(boolean wait_for_completion)
            throws AdapterInactive
Turns the associated POAs into discaring state. In this state, the POAs discard the incoming requests. This mode is used in situations when the server is flooded with requests. The client receives remote exception (TRANSIENT, minor code 1).
Specified by:
discard_requests in interface POAManagerOperations
Parameters:
wait_for_completion - if true, the method call suspends the current thread till POAs complete the requests they are currently processing. If false, the method returns immediately.
Throws:
AdapterInactive - if the POAs are in the inactive state.

get_state

public State get_state()
Get the state of the POA manager.
Specified by:
get_state in interface POAManagerOperations

hold_requests

public void hold_requests(boolean wait_for_completion)
            throws AdapterInactive
Turns the associated POAs into holding state. In this state, the POAs queue incoming requests but do not process them.
Specified by:
hold_requests in interface POAManagerOperations
Parameters:
wait_for_completion - if true, the method call suspends the current thread till POAs complete the requests they are currently processing. If false, the method returns immediately.
Throws:
AdapterInactive - if the POAs are in the inactive state.

notifyInterceptors

public void notifyInterceptors(int new_state)
Notify CORBA 3.0 interceptors about the status change.

poaDestroyed

public void poaDestroyed(gnuPOA poa)
This method is called when POA is destryed. The interceptors are notified.

removePOA

public void removePOA(gnuPOA poa)
Remove the POA, releasing it from the control of this manager. Called in POA finaliser.
Parameters:
poa - the POA to remove.

waitForIdle

public void waitForIdle()
Suspend the current thread while at least one of the associated POA is actively processing some requests. The method assumes that the POAs are not accepting the new requests due manager state.
Throws:
BAD_INV_ORDER - if the POAs are in the active state.
gnuPOAManager.java -- Copyright (C) 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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