Re: [OpenMap Users] Corba support package

From: Mariusz Chmielewski <>
Date: Sun, 21 Aug 2005 16:25:50 +0200

Thanks in advance for the answers i understand CORBA mechanisms and
basic issues but i was asking for something else, i analyzed the code
for corba server and client and i understand that server is usling local
RpfFrameProvider and the client is the using the remote one. Most of all
I need to understatn the functionality of the implemented interface and
what should be done to transfer remotly the RPH frames what is done and
what should be done. I already achived to load the map elements using
the pair of SimpleHttpServer and the SHISPlugIn and it works fine except
the one situation which i have described in previous mail. I wonder
which method of providing data is faster RMI, CORBA or pure Http what do
You thind since You have implemented it. Can i configure the HttpServer
to send lower quality images???

Thank You a lot Mariusz

Don Dietrick napisaƂ(a):

> Hi Mariusz,
> On Aug 20, 2005, at 4:16 PM, Mariusz Chmielewski wrote:
>> Hi everybody,
>> I am trying to get in touch with anyone who used this packege. If
>> someone has overloaded the mechanisms provieded in the example with full
>> understaning I would be greatful for the hints. My biggest problem is
>> the lack of the rest of sources for this packege (the full packege in
>> jar is provided but in sources i cannot find anything).
> All of the source code is there, it's just that some of it needs to be
> generated. If you build the package with ant, the idl files will be
> compiled to create the source fiies that are missing.
> But those source files really won't help you with what you want to do,
> they are the sources for how the CORBA mechanism handles the objects
> between the server and client.
>> I am trying to design the similar RMI based mechanism for wrorking
>> with the CADRG map
>> and i am not sure if i shout base the mechanism on SimpleHttpServer or
>> provide the whole RMI mechanism as in CORBA example. I would like to
>> state that the client softwer will be an applet and the server side will
>> be chosen based on the best end effective method of providing the RPF
>> map. On the client side i would like to have other layer such as
>> graphics so i need the server side and the whole mechanism to provide
>> the map data only.
> Since you want to cache RPF data files on the applet, you should
> definitely use the RMI mechanism. All you need is a modified
> CRPFClient and CRPFServer that use the RMI mechanism instead of the
> CORBA mechanism. The CRPFClient is the object that implements the
> RpfFrameProvider interface, you just have to design your RMI mechanism
> to support those methods. Then, you modify the CorbaRpfLayer to use
> your client RpfFrameProvider instead of the CRPFCient.
> BTW, everyone that receives mail also receives
> mail, so you don't have to send mail to both lists.
> - Don
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> Don Dietrick,
> BBN Technologies, Cambridge, MA
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

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Received on Sun Aug 21 2005 - 10:28:07 EDT

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