refactor: use class Edge instead of complicated type annotation

[jnussbaum]

The complicated type annotation list[tuple[int, int, XMLLink | ResptrLink]] is replaced by a new model: class Edge in models.py

[BalduinLandolt]

I generally like the changes. How confident are you that this does not have a negative performance impact for large datasets?

[jnussbaum]

I generally like the changes. How confident are you that this does not have a negative performance impact for large datasets?

How could it have a negative impact? I didn't think about it, but I cannot think of a way how it impacts performance negatively.

[BalduinLandolt]

I generally like the changes. How confident are you that this does not have a negative performance impact for large datasets?

How could it have a negative impact? I didn't think about it, but I cannot think of a way how it impacts performance negatively.

Just one example that struck my eye:

dsp-tools/src/dsp_tools/analyse_xml_data/construct_and_analyze_graph.py

Line 121 in 79a45ee

graph.add_edges_from([e.as_tuple() for e in edges])

This loop was previously not needed, now it's there. And maybe there is more like that, I did not search systematically. If it adds up to some seconds for a big upload, we don't need to care... but it would be good to be sure.

Could you compare how long the graph analysis routine takes on the SGV XML, between the current main branch and yours with all the changes. Then we don't need to guess/hope, but simply know it.