Re: [OpenMap Users] HttpImageServer - the idea behind it

From: OpenMap Support <>
Date: Tue, 9 Aug 2005 18:40:04 -0400

Hi Mariusz,

I think you want to take a look at the
com.bbn.openmap.layer.rpf.RpfFrameProvider interface, and see how the
RpfLayer uses it. By default, the RpfFrameCache is the localized
version of a RpfFrameProvider, but the src/corba directory contains a
CORBA RpfFrameProvider that is a client to a server, in the
com.bbn.openmap.layer.rpf.corba package.

The CorbaRpfLayer is a RpfLayer that uses the CRPFClient as the
RpfFrameProvider. The CRPFServer is the CORBA server.

While you can use these classes to do what you want, they do require
a bit of knowledge about how CORBA works, and how you get CORBA
clients and servers talking to each other. If you don't want to
approach that learning curve, you could use these classes as a model
to write a RMI version.

Hope this helps,


On Aug 9, 2005, at 5:54 PM, Mariusz Chmielewski wrote:

> I was looking into the code but i do not finally understand how does
> this class work is it servlet like tool and i should provide some
> kind of application server ro run it? I also looked at link layer
> but also i do not have an example how to use it. My application
> consists of applet and uses CADRG maps so i would like to while
> scrolling the map upload needed data from the server (only the map
> of the terrain) the rest of the data will be transfered some other
> way for example as XML stream.
> The problem is of course the memory and time of respose... in other
> words i would like to provide a client that uses the navigation
> pane would controll the server to send needed parts of the map.
> I am thinkikng of using the RMI to do so ... i would write a server
> that would provide a remote method which would using the OpenMap
> took a picture of the map - and send it as a byte stream which on
> the client side i would czange to OMGraphics and show in my Layer.
> What do You think about it??
> Mariusz
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Received on Tue Aug 09 2005 - 18:40:35 EDT

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