Re: [OpenMap Users] Openmap as a server (but not image server?)

From: Carsten . Madsen <com_at_navicon.dk>
Date: Tue, 17 Jan 2006 07:53:54 +0100

Hi Chris

It is easy to embed OM in , e.g, a servlet and extend the protocol. We
have used this approach to decorate a map with target info obtained from
a web service. Our URLs looks like this:

?REQUEST=map&PROJTYPE=Mercator&SCALE=3421874.8&LAT=50.8542&LON=-1.3491&HEIGHT=600&WIDTH=800&name0=RED OSPREY&SOG0=12.8&COG0=128.9&latx0=30512520&lonx0=-809460

Of course one have to fix the problems related to long URLs etc for this
to work but using another protocol like SOAP would eliminate this problem.

Check

http://navicon.dk/trkserver/AisTrackServer?format=html

and

http://navicon.dk/trkserver/displaytag.jsp

for demos.


regards
/carsten

Esposito, Christopher wrote:

>Hello All,
> I'm working on an interactive Openmap GUI (for adding, deleting, and
>moving items on the map) that will wind up as part of a distributed
>agent-based system that is mostly written in Python, although some of
>the pieces the GUI will talk to are also in Java. After much searching,
>discussion, and evaluation of a few alternatives it appears that
>directly interfacing Java and Python is quite problematic, to say the
>least, partly because the java-based pieces are in a subordinate role -
>we would be trying to "wrap" the java pieces in a Python layer so that
>they look just like the other Python-based agents. From what the local
>Python developers tell me, this rules out things like Jython, which is a
>python interpreter embedded in Java.
>
>As an alternative we are now looking at messaging approaches like SOAP
>to be able to cross the language barrier; the various agents send
>messages to the GUI piece when they need it to update something, and
>user interaction is converted into messages that go out to the various
>agents as appropriate. Two questions:
>
>1) has anybody used Openmap in this fashion? Any tips, tricks, gotchas
>to pass along?
>
>2) In digging through the mailing list archives I see references to
>Openmap as an `Image server', but I also get back hundreds of hits from
>the archives from this search. I have found the javadocs for some of the
>relevant classes here, and it sounds like the functionality provided is
>narrowly defined to responding to requests for pieces of a map rendered
>as JPEG images, or something similar. Have I correctly understood the
>function of the ImageServer-related classes?
>
>Thanks,
>Chris
>
>Chris Esposito, Ph.D.
>Associate Technical Fellow
>Boeing
>(425) 865-5322
>
>
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Received on Tue Jan 17 2006 - 01:54:38 EST

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