Test if 3.15 connectors work with 4.0 Deployments

[dwolfson]

@planetf1
I did a quick test with the JDBC connector and see that there are api mismatches that prevent proper operation. So we should state that there is no backward compatibility?

[planetf1]

Is that :
a) Using a connector binary build with 3.15
b) Building an existing 3.15 connector against 4.0 egeria

But I agree with you that behaviour should be documented.

As an aside, on b) we did find one API removal in 4.0 that was a regression and now fixed, that allowed the 3.15 code to compile, but there are still some package changes that will affect connector developers.

Initial information is at https://egeria-project.org/release-notes/next/#release-40-march-2023 - there may be more updates needed depending on what you've found, as well as a recommendation to rebuild with 4.

In addition to those general comments, we should state what we test with the charts. So far that has generally been just the default connectors as part of the release process, but if we have further information/capability to test we could include those too.

[planetf1]

We could move this to egeria-docs?

[dwolfson]

b