Re: [Virtuoso-users] Error in documentation

[Patrick van Kleef]

HI Sebastian,

The documentation of the Virtuoso RDF ODBC extensions[1] contains an error:

In the example the box flags are compared to 1 to determine if the result is a IRI:

switch (dvtype)
      {
      case VIRTUOSO_DV_STRING:
        {
          if (flag == 1)


In fact it needs to be:

switch (dvtype)
      {
      case VIRTUOSO_DV_STRING:
        {
          if (flag & 1)

At least that is what my experiments showed. I suppose the flags are a bit field stating that:

0 - latin1 string
1 - iri
2 - utf8

Thus, 3, would mean a utf8 encoded IRI, while 2 is a plain utf8 literal and 1 is a latin1 encoded IRI.

Thank you for spotting that oversight.

I will fix it in the online docs shortly.

Patrick