Re: [Geotools-devel] DB2 Plugin

[David A. <da...@ri...>]

The DB2 internal geometry representation uses integer coordinate values 
that are compressed.  The ST_AsBinary and ST_AsText functions are 
provided as ways for applications to work with the spatial data in an 
industry standard (OGC and ISO) format.

The various spatial constructors accept data in the WKB and WKT formats.

Regards,
David

Shyam Nagarajan wrote:
> Hi,
>
> I want to reuse the code that has been written for the DB2 Plugin for 
> another tool that I am developing.
>
> My question is on how to read the blob data that DB2 uses to store 
> geometry data. I looked through the DB2 Plugin, from what I understand 
> ST_AsBinary is used to convert the geometry blob data from db2 into a 
> WKB and then this WKB is converted into a JTS Geometry.
>
> Can you please confirm? Are there any mechanisms to read the BYTE data 
> of the blob directly to convert it into a WKB representation and vice 
> versa?
>
> Thanks and Regards,
> Shyam
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