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End-to-end magic-sets entry point. Given (db, query-goal):
- copies the caller's EDB facts (relations not headed by any
rule) into a fresh internal db
- adds the magic seed fact
- adds the rewritten rules
- saturates and runs the query
- returns the substitution list
Caller's db is untouched. Equivalent to dl-query for any
fully-stratifiable program; intended as a perf alternative on
goal-shaped queries against large recursive relations.
2 new tests: equivalence to dl-query on chain-3 ancestor, and
non-mutation of the caller's db (rules count unchanged).
421 B
421 B
datalog scoreboard
204 / 204 passing (0 failure(s)).
| Suite | Passed | Total | Status |
|---|---|---|---|
| tokenize | 26 | 26 | ok |
| parse | 18 | 18 | ok |
| unify | 28 | 28 | ok |
| eval | 25 | 25 | ok |
| builtins | 19 | 19 | ok |
| semi_naive | 8 | 8 | ok |
| negation | 10 | 10 | ok |
| aggregates | 18 | 18 | ok |
| api | 14 | 14 | ok |
| magic | 20 | 20 | ok |
| demo | 18 | 18 | ok |