[NeXus-tech] napi and attribute arrays

[Tobias.Richter at diamond.ac.uk]

Hi all,

So far I've been creating my example files for with the new geometry definitions with h5py (mostly). Now that I want to use Java for that I find that while we say the vector attribute consists of three values: http://download.nexusformat.org/doc/html/design.html?highlight=vector
there is no way to write that with the NAPI. Because napi.c has:

  NXstatus  NXputattr (NXhandle fid, CONSTCHAR *name, const void *data, 
                                  int datalen, int iType)
  {
    char buffer[256];
    pNexusFunction pFunc = handleToNexusFunc(fid);
    if (datalen > 1 && iType != NX_CHAR)
    {
        NXReportError("NXputattr: numeric arrays are not allowed as attributes - only character strings and single numbers");
        return NX_ERROR;
    }

Unless there are objections I'd remove that limitation (for HDF5 only for now). 

Tobias
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