Re: [OpenMap Users] Calling openmap from Query Engine

From: Don Dietrick <>
Date: Tue, 20 Sep 2005 10:58:04 -0400

On Sep 13, 2005, at 12:25 AM, Raghu wrote:

> hello,
> I have one requirement and it is as follows.
> 1.We have one inbuilt tool called Data Query
> Engine(DQE) which is a servlet based query tool
> designed in a 3 tier mode.
> 2.DQE is a generic web based tool that will query the
> underlying database (oracle) and results are thrown as
> a web page to the client.
> 3.User is provided an interface which is a web based
> ,designed using html / java script.
> 4.User will select the the required fields(columns)
> from the listed web page and will submit to the DQE
> .Now it is Job of the DQE to form the query from
> multiple tables and get the requisite information.As
> it is mentioned above it is transparent to the user
> about the underlying database , it is Job of the DQE
> to form the query and send it to servlet.
> Note : The framed query resulsts consist of the
> satellite coverages with latitude and longitude
> information , that has to be represented graphically
> (polygon) on a openmap (applet).
> Now the queries :
> 1.I want to integrate this DQE with the openmap , how
> can i do it?

You would write a layer to make a query to the DQE component, and to
communicate with the DQE component to create OMGraphics from the
result to display on that layer. If you can communicate with DQE
programmatically through Java, it shouldn't be that hard to get the
information flow going.

> 2. How can i pass the parameters (framed query)to
> openmap applet i.e.dynamic query passing from multiple
> web clients.

I don't understand this question, I'm getting confused between the
distinction you are drawing between applet and web clients.

- Don

Don Dietrick,
BBN Technologies, Cambridge, MA

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Received on Tue Sep 20 2005 - 11:28:32 EDT

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