A colleague and I are getting an error when trying to write a string, which is fully formed xml snippet, as an attribute in a hdf5 file.
Checks we have done:
1 - manually write the string and with .compare, this manual string matches exactly the string we have read from an xml buffer.
1a - the manual string can be written to an attribute
1b - the original string raises an error when we write
2 - we have used .copy to make a new copy of the string from the xml buffer
2a - this copy also fails to write with the same error
3 - we removed all new-line characters from the string - this did not help
4 - we tried the .substr method to chop the string to small pieces, this also did not help (all pieces failed to write)
5 - we tried the first 5 characters of the string, which do not have any special characters - still fails
The fact that 1a succeeds means we are probably missing something simple.
The error is
HDF5-DIAG: Error detected in HDF5 (1.8.16) MPI-process 1: #000: H5A.c line 334 in H5Acreate_by_name(): no attribute name
major: Invalid arguments to routine
minor: Bad value
I am hoping someone here has had and fixed the same problem, as we are very stuck.
I try my best from the available information (no code example provided). I suspect that the argument provided to the H5Acreate_by_name call is either not provided or not recognised as a valid name for an attribute. So you have to check that you provide a buffer containing a valid and not-yet-existing name for the attribute.
Once you've created the attribute you should be able to write the xml string to it using H5Awrite().
Kind regards,
Gerco
Gerco de Jager | Software Engineer | MARIN Software Group
MARIN | T +31 317 49 33 51 | mailto:G.d.Jager@marin.nl | http://www.marin.nl
-----Original Message-----
From: Hdf-forum [mailto:hdf-forum-bounces@lists.hdfgroup.org] On Behalf Of gmail
Sent: donderdag 11 januari 2018 2:09
To: hdf-forum@lists.hdfgroup.org
Subject: [Hdf-forum] xml string attribute write error
Greetings all,
A colleague and I are getting an error when trying to write a string, which is fully formed xml snippet, as an attribute in a hdf5 file.
Checks we have done:
1 - manually write the string and with .compare, this manual string matches exactly the string we have read from an xml buffer.
1a - the manual string can be written to an attribute
1b - the original string raises an error when we write
2 - we have used .copy to make a new copy of the string from the xml buffer
2a - this copy also fails to write with the same error
3 - we removed all new-line characters from the string - this did not help
4 - we tried the .substr method to chop the string to small pieces, this also did not help (all pieces failed to write)
5 - we tried the first 5 characters of the string, which do not have any special characters - still fails
The fact that 1a succeeds means we are probably missing something simple.
The error is
HDF5-DIAG: Error detected in HDF5 (1.8.16) MPI-process 1: #000: H5A.c line 334 in H5Acreate_by_name(): no attribute name
major: Invalid arguments to routine
minor: Bad value
I am hoping someone here has had and fixed the same problem, as we are very stuck.
A simple example that reproduces the error goes a long way.
I can't follow your description.
Please include a description of your environment (OS, compiler, etc.)
The error message suggests that you are using MPI.
Are you using parallel HDF5? If so, how?
G.
···
-----Original Message-----
From: Hdf-forum [mailto:hdf-forum-bounces@lists.hdfgroup.org] On Behalf Of gmail
Sent: Wednesday, January 10, 2018 7:09 PM
To: hdf-forum@lists.hdfgroup.org
Subject: [Hdf-forum] xml string attribute write error
Greetings all,
A colleague and I are getting an error when trying to write a string, which is fully formed xml snippet, as an attribute in a hdf5 file.
Checks we have done:
1 - manually write the string and with .compare, this manual string matches exactly the string we have read from an xml buffer.
1a - the manual string can be written to an attribute
1b - the original string raises an error when we write
2 - we have used .copy to make a new copy of the string from the xml buffer
2a - this copy also fails to write with the same error
3 - we removed all new-line characters from the string - this did not help
4 - we tried the .substr method to chop the string to small pieces, this also did not help (all pieces failed to write)
5 - we tried the first 5 characters of the string, which do not have any special characters - still fails
The fact that 1a succeeds means we are probably missing something simple.
The error is
HDF5-DIAG: Error detected in HDF5 (1.8.16) MPI-process 1: #000: H5A.c line 334 in H5Acreate_by_name(): no attribute name
major: Invalid arguments to routine
minor: Bad value
I am hoping someone here has had and fixed the same problem, as we are very stuck.
