[mapguide-users] Writing data to a shapefile example?

[Greg Boone]

Using the FDO API directly, it should be possible to create and modify shape files.

Initial creation of Shape files can be accomplished by running the FDO ApplySchema command after connecting to an empty directory location. Each new FDO class definition will be used to generate an empty Shape file with the same name as the class.

Modifying Shape files can also be accomplished by running the FDO ApplySchema command on a set of shape files that have been initially read by specifying their directory location through the FDO Shape provider connection properties. There is a restriction here that the shape files being modified through ApplySchema cannot have data in them, and must be empty.

Refer to https://svn.osgeo.org/fdo/trunk/Providers/SHP/Src/UnitTest/SchemaTests.cpp for examples of how this is done.

Greg

-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Andy Morsell
Sent: Monday, April 28, 2008 2:22 PM
To: 'MapGuide Users Mail List'
Subject: RE: [mapguide-users] Writing data to a shapefile example?

We researched this awhile back for a project and found parts of  it not to
be possible with the existing FDO API functionality.  The biggest problems:
you cannot create a new Shape file programmatically, and you cannot modify
an existing Shape files schema.  It may be possible to have empty dummy
Shape files in the repository with the proper schema definition and then
write data into them, then copy the shape file, etc., however.

It also may be possible to modify existing Shape files, but I have not seen
any examples where this is done.  The General Tasks Shareable Markups
example is good for SDF creation and modification though.
http://data.mapguide.com/mapguide/gt/index.php


Andy Morsell, P.E.
Spatial Integrators, Inc.
http://www.SpatialGIS.com

-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of MMicallef-MTO
Sent: Monday, April 28, 2008 9:22 AM
To: mapguide-users at lists.osgeo.org
Subject: [mapguide-users] Writing data to a shapefile example?


Looking for some quick help:

Does anyone have an example for generic code for writing data to a shapefile
         eg - new point with attributes
             - deleting a point
             - updating attributes

I have been looking and am unable to locate examples for 2.0 I have to put
together a site that shows this functionality for our data an do not have
much time...

Something simple - any help is greatly appreciated!

Mike
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