Filtersets V2 #3
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Simplifies filtersets. The primary filter type is now a RelDnf (the ids of spans matching a Disjunctive Normal Form over a source). This makes rewrite rules simpler (many -> one (intersection of DNFS)), and also results in better performance, since we can merge many kinds of nodes into one DNF, which corresponds to only a single scan on the data.
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Simplifies filtersets.
The primary filter type is now a RelDnf (the ids of spans matching a Disjunctive Normal Form over a source). This makes rewrite rules simpler (many -> one (intersection of DNFS)), and also results in better performance, since we can merge many kinds of nodes into one DNF, which corresponds to only a single scan on the data.
This is older work, but I forgot to push it.