45 lines
1.9 KiB
Markdown
45 lines
1.9 KiB
Markdown
---
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id: graph/queries
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name: Implement graph query methods (topologicalOrder, ancestors, descendants, call graph queries)
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status: completed
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depends_on:
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- graph/flowgraph-class
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scope: moderate
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risk: low
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impact: component
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level: implementation
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---
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## Description
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Implement the query methods on FlowGraph that delegate to graphology and graphology-dag, plus the call-graph-specific observability queries.
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## Acceptance Criteria
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- [ ] `topologicalOrder(): string[]` — delegates to `graphology-dag.topologicalSort`, throws `CycleError` if cycles exist (should never happen after validated construction)
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- [ ] `hasCycles(): boolean` — delegates to `graphology-dag.hasCycle`
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- [ ] `findCycles(): string[][]` — delegates to graphology cycle detection (debugging)
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- [ ] `ancestors(nodeId): string[]` — delegates to `graphology-dag.ancestors`
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- [ ] `descendants(nodeId): string[]` — delegates to `graphology-dag.descendants`
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- [ ] `predecessors(nodeId): string[]` — delegates to `graph.inNeighbors`
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- [ ] `successors(nodeId): string[]` — delegates to `graph.outNeighbors`
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- [ ] `reachableFrom(nodeIds): Set<string>` — custom BFS/DFS traversal from starting nodes
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- [ ] Call graph queries: `filterByStatus(status): string[]`, `getRoots(): string[]`, `children(requestId): string[]`, `duration(requestId): number`, `lineage(requestId): string[]`
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- [ ] `filterByStatus`: O(n) filter over `forEachNode()` — documented as sufficient for expected sizes
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- [ ] `getRoots()`: returns nodes with `parentRequestId === undefined`
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- [ ] `lineage()`: ancestor chain from root to target
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- [ ] Unit tests for each query method with known graph structures
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## References
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- docs/architecture/flowgraph-api.md — query methods, call graph queries
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- docs/architecture/operation-graph.md — query delegation to graphology-dag
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- docs/architecture/call-graph.md — observability queries
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## Notes
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> To be filled by implementation agent
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## Summary
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> To be filled on completion |