feat: carry the attested skip on PathQueryRun's axis variants - #836
Conversation
Extend the two single-path axis variants of PathQueryRun to carry the
count-commitment-attested skip alongside the page, closing the gap that
blocked platform from routing single-prefix ranked reads through
run_path_query:
- PathQueryRun::AxisEntries { entries, skipped: Option<u64> }
- PathQueryRun::AxisKeys { keys, skipped: Option<u64> }
Some(n) for RankedPage traversals — derived from the counted subtree
commitments exactly as indexed_*_top_k_paginated* derives it (equal to
the requested offset on a full page, the population when the offset ran
past the end) — and None for Bounded traversals, mirroring the proved
side's VerifiedPathQuery::AxisEntries contract. The branched variants
stay skip-free: branching rejects non-zero offsets upstream, so a
per-branch skip carries no meaning for the merged union.
Differential tests pin the unified read to the direct primitive's
(entries, skipped) pair across offset 0, mid-population, exactly-the-end
and past-the-end offsets, on both projections and both directions, and
cross-check the unproved skip against the proof-attested one.
Closes #834
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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📝 WalkthroughWalkthrough
ChangesAxis skip attestation
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: ⚪ Minimal · up to The change is merge-ready after normal review; only a small documentation follow-up remains to clarify that both result variants support the same skip semantics, including offsets at or past the end. Sequence Diagram(s)sequenceDiagram
participant Client
participant run_axis_read
participant axis_top_k_paginated_entries
participant IndexedTopKEntriesPage
Client->>run_axis_read: request ranked axis page
run_axis_read->>axis_top_k_paginated_entries: read page
axis_top_k_paginated_entries->>IndexedTopKEntriesPage: obtain entries and skipped
IndexedTopKEntriesPage-->>axis_top_k_paginated_entries: entries, skipped
axis_top_k_paginated_entries-->>run_axis_read: AxisEntries with skipped
run_axis_read-->>Client: unified axis result
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Linked Issues checkExplanation The changes implement issue Full details: Docstring CoverageExplanation Docstring coverage is 71.43% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 14 functions across 3 files. (1 skipped: 1 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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Inline comments:
In `@docs/book/src/unified-path-query.md`:
- Around line 188-197: Update the documentation around the RankedPage
single-path paginated axis reads to state that the contract applies to both
AxisEntries and AxisKeys. Clarify that offsets at or past the population return
an empty page with skipped: Some(population), while full pages report the
requested offset; retain skipped: None for Bounded traversals and no skip for
branched variants.
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docs/book/src/unified-path-query.mdgrovedb/src/operations/get/run_path_query.rsgrovedb/src/tests/axis_read_projection_tests.rsgrovedb/src/tests/run_path_query_tests.rs
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## develop #836 +/- ##
========================================
Coverage 92.53% 92.53%
========================================
Files 292 292
Lines 90484 90500 +16
========================================
+ Hits 83727 83743 +16
Misses 6757 6757
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…ract Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
1 participant
Closes #834.
Platform wants to route all ranked / having-range document queries — single-prefix included — through the unified
PathQuerysurface, retiring the directindexed_*call sites in its executors. The one capability gap: the unproved unified read dropped the count-commitment-attested skip that the direct paginated primitives and the proved side (VerifiedPathQuery::AxisEntries) both carry.The change
The two single-path axis variants of
PathQueryRunnow carry the skip alongside the page:PathQueryRun::AxisEntries { entries, skipped: Option<u64> }PathQueryRun::AxisKeys { keys, skipped: Option<u64> }Some(n)forAxisTraversal::RankedPagetraversals — threaded straight from theIndexedTopKPage/IndexedTopKKeysPagethe direct primitives return, so it is derived from the counted subtree commitments exactly asindexed_*_top_k_paginated*derives it: equal to the requested offset on a full page, smaller when the walk exhausted the secondary (an offset at or past the end returns an empty page whoseskippedattests the population).NoneforBoundedtraversals (no skip concept), mirroring the proved side's contract.The branched variants stay unchanged: a non-zero offset is rejected together with branching upstream, so a branched read's skip is structurally zero and a per-branch skip carries no meaning for the merged union; the branched arm explicitly discards the page's skip with a comment saying so.
Breaking change to
PathQueryRun— V4-era API with no released consumers; in-tree callers and dashpay/platform adapt at the pin bump.Tests
axis_top_k_skip_matches_direct_primitive_across_the_offset_spectrum: for both directions and both projections (entries + keys), across offset 0, mid-population, exactly-the-end, and past-the-end, the unified read returns the identical(entries, skipped)pair as the direct primitive, and the unproved skip equals the proof-attestedVerifiedPathQuery::AxisEntriesskip.Some(direct.skipped)) andNoneon every bounded arm, on all three axes.unified-path-query.md) documents the contract.Full suite: 2922 passed, 0 failed (
cargo nextest run -p grovedb --all-features); clippy (CI invocation) clean.🤖 Generated with Claude Code
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