December 22, 2003
An Enterprise Approach to GIS Data
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Welcome to GISWeekly! This week's Industry News features an article on new client-server-datastore architecture from Any*GIS, which takes advantage of the Autodesk desktop and focuses on the enterprise.
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An Enterprise Approach to GIS Data
By Susan Smith
Hitachi Software, a long-time Autodesk partner that I spoke with at Autodesk University, is also addressing the issue of interoperability. Part of their family of products, their new client-server-datastore architecture product, CAD Client, offers integration with GIS databases using the AutoCAD desktop. The Any*GIS product features include read and write capabilities from ESRI, GE Smallworld, Intergraph, MapInfo and shapefiles, as well as a spatial information module for creating and editing topologies for landbase applications, ability to publish maps over the web, and to run reports, conduct thematic mapping, and plotting, among other features.
reads the native database
formats of SDE or Smallworld, DWG, DGN, the major GIS formats, transforms them to the simple feature OGC compliant objects. If we send that through our whole system, basically it makes a homogeneous object definition for the rest of the system below that. So what we're doing is transferring a point feature in a shapefile, basically an x,y coordinate and a string of properties on it. What we've done is transferred that from the format that ESRI has defined for that and transformed it to the point feature definition that is basically GML and pass that through our system.”
“GML is our transport's protocol. The GeoAdapter is our API that allows CAD Client to access any GIS data. We basically pass which features, or layers, the user is looking for to the GeoAdapter then the GeoAdapter handles the different systems' proprietary way of storing those and bringing back that information. It then transforms those objects into a GML string that then sends that down through our system. Below that, all of our system works in OpenGIS. It's very much an OBDC type of approach for GIS.
back as a
delete. So for example, if they only changed four objects, then they only sent back those four objects rather than the entire sample area.
open source library as well that's available to us. With Smallworld and SDE we have to use different tools to access their libraries. For SDE we're using ESRI's API to do that, we're well behaved within their environment.
“For others, like federal government formats, like DLGs, etc., we're using a file translator because it's a point to point translation rather than an interoperable translation. Those files are not meant for data storage but rather to move data back and forth. We basically just use it to load into Oracle or other databases.”
deleted, modified, then back
those objects. Before, we were writing back all the objects we had extracted, including all the things that had been modified, so it wasn't a very effective thing to start with. This was the biggest retooling issue from version 1 to 3. We've had version 3.0 out for about two months now.”
we've differentiated ourselves
from Autodesk in the past is that they have a very strong mapping tool but the backend for enterprise GIS isn't there at the moment.”
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-- Susan Smith, GISCafe.com Managing Editor.
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