Notion recently deprecated the database endpoints that Spring Batch Notion indirectly uses, and a new pattern should be adopted. Unfortunately, the maintainer has no bandwidth for this, so I've taken the opportunity to rewrite what is needed with the Spring HTTP Service Client and Jackson 3.

The HTTP Service Client really stands out for its brevity and ease of use. Plus, the versioning support introduced in Framework 7 is a perfect match for the Notion API.

Jackson doesn't really need any introduction, and I lost track of how many times I wondered, "Can I really do this with Jackson?!"

After the changes, how the extension communicates with Notion is fully an implementation detail, tailored to its scope and no longer exposed to users. All public types are now decorated with Jackson annotations, and there is no need for an intermediate layer to handle request & response conversion.