topic File Geodatabase API / FullExtent and RecordCount ¿? in File Geodatabase API Questions

File Geodatabase API / FullExtent and RecordCount ¿?

ahuarte — Tue, 25 Jan 2011 05:48:05 GMT

I am reading a FeatureLayer table using the C++ API.
Congratulations! I love this library 🙂

How I do to read the FullExtent and the RecordCount of the table?
Should I read whole table and manually calculate it?
But if it is very very big?

This does not work ...
std:: wstring sqlStatement(L"SELECT COUNT(OBJECTID) AS __NUMRECS FROM Cities");

Could you publish this information in the following version of the API?

thanks in avance!

Re: File Geodatabase API / FullExtent and RecordCount ¿?

LanceShipman — Tue, 25 Jan 2011 16:52:10 GMT

How I do to read the FullExtent and the RecordCount of the table?
Should I read whole table and manually calculate it?
But if it is very very big?

Currently there is no way to read the FullExtent or the RecordCount of the table except by manually calculating it.

This does not work ...
std:: wstring sqlStatement(L"SELECT COUNT(OBJECTID) AS __NUMRECS FROM Cities");

Could you publish this information in the following version of the API?

SELECT COUNT() is not supported by the file geodatabase. When it is we will add support to the API.

I will enter enhancements for both of these issues (to be included in a later release.)

Re: File Geodatabase API / FullExtent and RecordCount ¿?

ahuarte — Wed, 26 Jan 2011 08:32:20 GMT

Thanks for the reply.

I think 🙂 that 'COUNT()' is not necesary if exist a property 'RecordCount' in your 'Table' class.

Thank you vey much.

Re: File Geodatabase API / FullExtent and RecordCount ¿?

LanceShipman — Wed, 26 Jan 2011 17:51:11 GMT

GetRowCount and GetExtent will be in the next Beta code drop.