Re: Map Server Model

Hi Dietal,

There are a couple of ways to set up OpenMap components in a
client-server configuration.

The com.bbn.openmap.layer.link package contains an OpenMap LinkLayer
client, that talks to a OpenMap LinkServer implementation that can be
extended/implemented for different data sources. The
com.bbn.openmap.layer.link.shape.ShapeLinkServer has been written to
provide shape file data to the LinkLayer, as an example. The
openmap/cserver directory contains C libraries that can be used to
create a LinkServer implemented in C. The server provides individual
graphic objects.

The com.bbn.openmap.image.SimpleHttpImageServer is a basic example of
using OpenMap to provide images to a client. The
com.bbn.openmap.plugin.shis.SHISPlugIn is an example of a client that
talks to the SimpleHttpImageServer. The server provides an image.

The com.bbn.openmap.plugin.wms.WMSPlugIn can be used to talk, in a very
basic way, to OGC Web Map Servers. You may have to tweak the code to
get it to work with specific servers, depending on the server
implementation. Here, too, the server provides an image.

We also have CORBA components that can be used to set up a
client/server. The server provides individual graphic objects.

Lastly, some layers can access data via URL, so that web servers act as
the data provider. The shape layer, RPF layer and DTED layers all work
given a URL to the top-level data. Here, the server provide raw data
that is used to create graphic objects on the client side.

Documentation on these different approaches should be found in the
JavaDocs for the different packages, and more detail may be found in the
FAQ on the website.

Hope this helps,

Don

On Wednesday, October 24, 2001, at 04:44 PM, dietal karl wrote:

> Can Openmap implement a map server model? What I mean
> is that the map server keeps the map data such as ESRI
> shape data then construct a map sending to the client
> according to the client's request.If it can, is there
> any samples, tutorials or docuemnts on this topic?
>
> Thanks,
> Dietal
>
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BBN Technologies, Cambridge, MA
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