[geos-devel] GEOS and Writing SRID values
Charlie Savage
cfis at savagexi.com
Thu Sep 13 12:46:08 EDT 2007
> I agree - but that's separate thing, no? The right solution is expose
> the reader/writers to the capi so you can create one and then use it.
>
>> I'd like to see an extension to the C API adding:
>>
>> GEOSGeomToHEX_bufWithOpts( const GEOSGeometry *g, size_t *size,
>> int byteOrder, int includeSRID,
>> int outpuDimension );
Thinking about this more, maybe the better way to do this is give the
caller more control:
GEOSWkbWriter GEOSWkbWriter_create(int byteOrder, int includeSRID, int
outpuDimension);
void GEOSWkbWriter GEOSWkbWriter_destroy(GEOSWkbWriter writer);
extern unsigned char GEOSWkbWriter_write(const GEOSGeometry *g, size_t
*size);
extern unsigned char GEOSWkbWriter_writeHex(const GEOSGeometry *g,
size_t *size);
And similar for the WktWriter. And really the same for WkbReader/WktReader.
The advantage of this is a client can create and cache their own
reader/writers without having to create a new one every time. Thus this
avoids the static issue you mentioned, but doesn't force creation of new
readers and writers every time you want to use one (which for my app, is
*alot*).
Thus, this is the approach that I prefer.
Charlie
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