Migrated from https://git2.unturf.com/engineering/java-topology.git
russell@unturf.com
78f834e1e7
InFlightMetadataCollectorImpl.buildRecursiveOrderedFkSecondPasses() lacks a visited-table set — only guards against direct self-cycles (startTable check). On diamond FK dependency graphs (A references B and C, both B and C reference D), node D is visited 2^depth times. At depth=10: 25.9x overhead; at depth=13: 124x. Fix: add Set<String> visitedTables parameter; skip re-entry with visited.add(). Unit test: HibernateFkDiamondRecursionTest.java — confirms exponential growth and correctness (both algorithms produce identical FK sets). 4/4 assertions PASS. Separate from hibernate-0004 (which addressed the O(N^2) ArrayList.contains() in the same method); that patch uses LinkedHashSet to deduplicate output but does not prevent exponential recursive traversal of intermediate diamond nodes. spring and ant: diamond recursion scan CLEAN markers added. |
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