Collection Rewrite Approach

[margaretha]

Collection rewrites attached an AND operation with availability values restricting resource access, to an existing collection query. Current approach checks a given collection query nodes that determines whether collection rewrite is needed or not. This approach is tricky and vulnerable to leak.

Another approach would be to always perform collection rewrite and normalize/optimize the collection query afterwards, similar to the boolean optimiser from managing gigabytes.

See https://github.com/KorAP/Krawfish-prototype/blob/master/lib/Krawfish/Koral/Util/Boolean.pm