orneryd / NornicDB / 26131710288

90%

Build Type

push

github

Committed by orneryd

Commit Message

feat(demo,cypher,server): add /demo galaxy + make traversal cancellable

  UI: new unlinked /demo route renders an interactive 3D force-directed
  graph using 3d-force-graph + three.js (lazy-loaded so the main bundle
  stays lean). On first visit the page seeds a `d3_demo` database with a
  procedurally generated galaxy — sectors arranged on a Fibonacci sphere,
  linked in a chain by gateway hyperlanes, so traversal across the chain
  yields deep multi-hop shortest paths. All seed Cypher pinned to the
  hot-path cookbook: UnwindSimpleMergeBatch (§7.3) for stars and
  UnwindMultiMatchCreateBatch (§7.3h) for hyperlanes. A purple-themed
  HUD in the top-right tracks live shortestPath latency only — seed and
  catalog calls are excluded so the bars reflect query speed, not page
  load. Click any two stars to traverse between them; the route lights
  up in purple and the latency lands in the HUD.

  Cypher parser: variable-length patterns without an upper bound (`[*]`,
  `[*N..]`) previously capped at MaxHops=10/100, so shortestPath silently
  returned no rows on graphs whose diameter exceeded the cap. Bumped the
  parser default to a large sentinel (VarLengthUnboundedMaxHops = 1<<24)
  so BFS terminates when the frontier is exhausted instead of when the
  cap fires. Default in parseShortestPathQuery raised to match.

  Cypher executor: substitute parameters before parsing shortestPath
  queries in both the executor and transaction dispatchers — without this
  the variable-binding lookup for `MATCH (start:Star {starId: $startId})`
  matches the literal string `$startId` against every node, falls through
  to AllNodes() × AllNodes() BFS, and hangs. Refuse rather than fall
  through when a variable can't be resolved against the preceding MATCH.
  Add list-comprehension support to pathToValue for the common shapes
  `[n IN nodes(p) | n.<prop>]`, `[r IN relationships(p) | type(r)]`, and
  the id/elementId/labels variants — previously these returned null.

  Ca... (continued)

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