Linking hdf5 files about jupyterlab-hdf5

[loichuder]

After a quick look in the code, ExternalLinks are indeed not yet supported. The fact that you can resolve them by using the same name is an edge case and even so, I am not convinced it works fully.

Some work in the extension is needed to handle the cases where the data comes from different files.

[loichuder]

v0.8.0 adds a setting to enable link resolution. Closing this then.

[loichuder]

If I understand correctly, you can only resolve the external link if the name of the external link matches the name of the group/dataset it links to ?

[icoert]

If I understand correctly, you can only resolve the external link if the name of the external link matches the name of the group/dataset it links to ?

Yes, indeed.

[telamonian]

I cannot reproduce @icoert's original issue. The following code

with h5py.File('atomicfile.hdf5', 'w') as f:
    dataset = np.random.rand(100)
    f.create_dataset('testset', data=dataset)

with h5py.File('linkfile.hdf5', 'w') as f:
    f['foo'] = h5py.ExternalLink('atomicfile.hdf5', '/')
    print(f['foo/testset'])

prints out

<HDF5 dataset "testset": shape (100,), type "<f8">

which is exactly what you'd expect.

In any case, this seems more an issue for h5py than like an issue we should be dealing with in this PR. @icoert Were you having trouble with the Jupyterlab extension jupyterlab_hdf5, or was the issue just with the example h5py code that you posted?

[icoert]

In any case, this seems more an issue for h5py than like an issue we should be dealing with in this PR. @icoert Were you having trouble with the Jupyterlab extension jupyterlab_hdf5, or was the issue just with the example h5py code that you posted?

@telamonian, I am encountering the problem inside the viwer, it seems it's not related to h5py.

[loichuder]

v0.7.0 now explicitly handles external and soft links.

Clicking on a link allows see to where it points but does not resolve it for now.