feat(dpp)!: indexOnly delete-by-values as its own transition kind - #4497
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QuantumExplorer merged 2 commits intoAug 27, 2026
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…ts own kind An indexOnly document type stores no primary row: the index entries ARE the rows, so a delete cannot address anything by id — it must carry the document's full property-value tuple. Model that as its own batched transition KIND (DocumentIndexOnlyDeleteTransition, starting at V0), not as a V1 of DocumentDeleteTransition: delete-by-id and delete-by-values differ in payload, authorization model and validation pipeline, exactly the distinction transfer/updatePrice/purchase already draw. dpp: new kind (base + flattened values map, manual Deserialize peeling BASE_FIELD_NAMES), appended DocumentTransition variant (bincode discriminants unchanged), factory dispatch on document_type.index_only(), and a check_tx wire gate rejecting the kind below PV14 via the new Option-typed serialization-table entry (None below PV14, V0-only at V3). drive: DocumentIndexOnlyDeleteTransitionAction + transformer, the DeleteIndexOnlyDocument batch op, per-document row-commitment hoisting (computed once, shared across every entry probe), and entry probes that compare each entry's stored 32-byte row commitment. drive-abci: dedicated structure validation (storage-mode pairing in both directions, $createdAt pinned to the doctype requirement, payload run through validate_document_properties) and state validation (every index entry must exist AND carry the recomputed row commitment; probes plus the commitment hash billed as one precalculated fee, on error paths too). Tests: full yappr-likes lifecycle through the ABCI pipeline, wrong-kind refusals in both directions, malformed-payload refusal, the PV13/PV14 wire-gate pin, a spliced-tuple storage refusal, and serde round-trips asserting the complete flattened wire shape. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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📝 WalkthroughWalkthroughThis change adds an ChangesIndex-only delete transition
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🔵 Low · up to The new delete-by-values flow is mergeable, but one negative test does not currently prove that the intended index-only validation rule is enforced, leaving a bounded regression risk that should be tightened by the owner; the related error-message formatting issue is minor. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 45.12% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 82 functions across 50 files. (19 skipped: 1 unsupported, 18 over the file limit.)
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Inline comments:
In
`@packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/index_only.rs`:
- Around line 613-623: Strengthen the assertion for the index-only delete case
in the document transition test so it verifies the specific structure-gate error
message produced by the !document_type.index_only() branch, rather than only
matching the shared InvalidDocumentTransitionActionError type. Alternatively,
use a stored doctype whose canBeDeleted setting permits deletion, ensuring the
test cannot pass through the documents_can_be_deleted() branch.
In
`@packages/rs-drive/src/drive/document/delete/delete_index_only_document_for_contract_operations/v0/mod.rs`:
- Around line 159-161: Update the DeletingDocumentThatDoesNotExist error message
in the delete_index_only_document_for_contract_operations flow to remove the
unintended whitespace and split the string across adjacent literals while
preserving the intended wording and spacing.
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📒 Files selected for processing (69)
packages/rs-dpp/src/state_transition/mod.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_index_only_delete_transition/from_document.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_index_only_delete_transition/mod.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_index_only_delete_transition/v0/from_document.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_index_only_delete_transition/v0/mod.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_index_only_delete_transition/v0/v0_methods.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_index_only_delete_transition/v0_methods.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_transition.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/document_transition_action_type.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/batched_transition/mod.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/mod.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/v0/v0_methods.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/v1/v0_methods.rspackages/rs-dpp/src/state_transition/state_transitions/document/batch_transition/validation/validate_basic_structure/v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/action_validation/document/document_create_transition_action/state_v1/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/action_validation/document/document_delete_transition_action/advanced_structure_v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/action_validation/document/document_index_only_delete_transition_action/advanced_structure_v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/action_validation/document/document_index_only_delete_transition_action/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/action_validation/document/document_index_only_delete_transition_action/state_v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/action_validation/document/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/advanced_structure/v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/state/v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/index_only.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/transformer/v0/mod.rspackages/rs-drive-abci/tests/strategy_tests/verify_state_transitions.rspackages/rs-drive/src/drive/contract/insert/insert_contract/v0/tests/index_only_e2e_tests.rspackages/rs-drive/src/drive/document/delete/delete_index_only_document_for_contract_operations/v0/mod.rspackages/rs-drive/src/drive/document/index_only.rspackages/rs-drive/src/drive/document/index_only_row_commitment.rspackages/rs-drive/src/drive/document/mod.rspackages/rs-drive/src/query/filter.rspackages/rs-drive/src/state_transition_action/action_convert_to_operations/batch/document/document_index_only_delete_transition.rspackages/rs-drive/src/state_transition_action/action_convert_to_operations/batch/document/document_transition.rspackages/rs-drive/src/state_transition_action/action_convert_to_operations/batch/document/mod.rspackages/rs-drive/src/state_transition_action/batch/batched_transition/document_transition/document_index_only_delete_transition_action/mod.rspackages/rs-drive/src/state_transition_action/batch/batched_transition/document_transition/document_index_only_delete_transition_action/transformer.rspackages/rs-drive/src/state_transition_action/batch/batched_transition/document_transition/document_index_only_delete_transition_action/v0/mod.rspackages/rs-drive/src/state_transition_action/batch/batched_transition/document_transition/document_index_only_delete_transition_action/v0/transformer.rspackages/rs-drive/src/state_transition_action/batch/batched_transition/document_transition/document_transition_action_type.rspackages/rs-drive/src/state_transition_action/batch/batched_transition/document_transition/mod.rspackages/rs-drive/src/util/batch/drive_op_batch/document.rspackages/rs-drive/src/verify/state_transition/verify_state_transition_was_executed_with_proof/v0/mod.rspackages/rs-drive/tests/supporting_files/contract/yappr-likes/yappr-likes-contract.jsonpackages/rs-platform-version/src/version/dpp_versions/dpp_state_transition_serialization_versions/mod.rspackages/rs-platform-version/src/version/dpp_versions/dpp_state_transition_serialization_versions/v1.rspackages/rs-platform-version/src/version/dpp_versions/dpp_state_transition_serialization_versions/v2.rspackages/rs-platform-version/src/version/dpp_versions/dpp_state_transition_serialization_versions/v3.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/mod.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v1.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v10.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v2.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v3.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v4.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v5.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v6.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v7.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v8.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v9.rspackages/rs-platform-version/src/version/drive_versions/drive_state_transition_method_versions/mod.rspackages/rs-platform-version/src/version/drive_versions/drive_state_transition_method_versions/v1.rspackages/rs-platform-version/src/version/drive_versions/drive_state_transition_method_versions/v2.rspackages/rs-platform-version/src/version/drive_versions/drive_state_transition_method_versions/v3.rspackages/rs-platform-version/src/version/drive_versions/drive_state_transition_method_versions/v4.rspackages/rs-platform-version/src/version/system_limits/v1.rspackages/rs-platform-version/src/version/v14.rspackages/wasm-dpp/src/document/state_transition/batch_transition/document_transition/mod.rspackages/wasm-dpp2/src/enums/batch/batch_enum.rspackages/wasm-dpp2/src/state_transitions/batch/document_transition.rs
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The stored-type refusal test aimed at the fixture's post doctype, whose canBeDeleted: false fires an earlier check returning the same error TYPE — the test stayed green even with the pairing gate deleted. Order the pairing gate first (on a stored doctype every later check judges the wrong kind) and pin the test to the gate's message. Also un-mangle a line-wrap whitespace artifact in the storage-layer splice-refusal error. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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QuantumExplorer
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August 27, 2026 14:28
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## v4.2-dev #4497 +/- ##
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- Coverage 84.00% 83.25% -0.75%
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Files 2731 2743 +12
Lines 362946 366854 +3908
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+ Hits 304889 305437 +548
- Misses 58057 61417 +3360
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…x positions Rebased onto v4.2-dev after #4497 (indexOnly delete as its own transition kind, superseding #4493): the executed-transition prover and verifier now match DocumentTransition::IndexOnlyDelete, whose data() is non-optional — the values-missing error paths are gone — and the by-id verifier arm for the new kind now covers only the degenerate stored-doctype case. Queries synthesize documents from index positions via query/index_only_synthesis.rs (one builder shared by server and verify); executed indexOnly transitions are proven against the single entry their values produce (create = present, delete = absent) through the same path-query builder on both sides. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Rebased onto v4.2-dev after #4497/#4494: the builders go through the batch factory, which now selects the DocumentIndexOnlyDeleteTransition KIND from the doctype's storage mode, so the SDK surface needed no API changes — the delete builder keeps the full document when built from one (mandatory for indexOnly types, whose values are the payload) and the wasm-sdk delete path routes Document instances through from_document. The book chapter documents the as-merged design: the delete as its own kind, the commitment-checked execution proofs with their AffectedState semantics, and the framed synthetic-id formula. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Issue being fixed or feature implemented
Third PR of the indexOnly document types stack (on top of #4491 schema and #4492 storage): the delete transition and its ABCI validation. This PR supersedes the design in #4493, which modeled the values-carrying delete as a
DocumentDeleteTransitionV1— a version of the delete transition, auto-selected by storage mode and hard-gated per doctype. That V1 could never supersede V0, so it was a storage-mode discriminator wearing a version number. Delete-by-id and delete-by-values are different operations: different payload, different authorization model (fetch-then-check-ownership vs self-authorizing values), different validation pipeline (primary-row fetch vs per-index commitment probes) — exactly the distinction the repo already draws with separate transition kinds (transfer, updatePrice, purchase).What was done?
DocumentIndexOnlyDeleteTransition— a new batched transition kind, starting at its own V0 ({ base, data: BTreeMap<String, Value> }).DocumentDeleteTransitionstays V0-only and keeps evolving independently for stored types.dpp:
v0/,from_documentdispatcher, accessor traits). The V0 struct keeps the manualDeserialize(two#[serde(flatten)]fields, one a catchall map —BASE_FIELD_NAMESpeels the base's keys, with the sync warning).from_documentcarries$createdAtunder its system key iffdocument_type.required_fields()contains it (an indexed$createdAtforces the requirement, and it feeds the row commitment), erroring at construction when required but absent — keyed on the type, never on what the localDocumenthappens to carry.DocumentTransition, so every existing bincode discriminant is unchanged; serde tag is"$action": "indexOnlyDelete".DocumentTransitionActionTypegains an appendedIndexOnlyDelete.UnsupportedVersionError. The serialization table's new entrydocument_index_only_delete_state_transitionis typedOption<DocumentFeatureVersionBounds>—Nonein V1/V2 (the kind does not exist on the wire there, theOptionalFeatureVersion"didn't always exist" idiom),Some(0/0/0)in the new V3 (PV14-only).document_delete_state_transitionkeeps V2's bounds.new_document_deletion_transition_from_document) dispatches ondocument_type.index_only()and builds the right kind — legitimate now, since it chooses an operation, not a version.drive:
DocumentIndexOnlyDeleteTransitionAction(v0{ base, data }, accessors, transformer) plus its high-level operation converter emitting the newDeleteIndexOnlyDocumentbatch op (document reconstructed from values viaDrive::index_only_document_from_values;$createdAtmoves back from its system key).index_only_entry_commitment_matchesnow takes the precomputed row commitment, so callers hash the tuple once per document and share it across every index probe;index_only_row_commitment_with_preimage_sizeexposes the preimage length for fee accounting. The storage-layer delete gate hoists the commitment out of its loop.drive-abci:
document_index_only_delete_transition_actionvalidation module:advanced_structure_v0: refuses the kind on non-indexOnly doctypes; then validates the untrusted payload BEFORE anything derives an index key from it —$createdAtsplit off and pinned to the doctype requirement (present iff required, type-checked as a timestamp), the remaining map run throughDataContract::validate_document_properties(required properties, value types, unknown keys rejected).state_v0: reconstructs the document, computes the row commitment ONCE, probes EVERY index entry — each must exist AND carry that commitment (every index embeds$ownerId, so owner-scoping and existence come from one read; the commitment defeats values tuples spliced from two documents, including two by the same owner). All probe reads plus the hash (aFunctionOperation(Sha256_2)sized to its preimage) are billed as one precalculatedFeeResult— on the error paths too.batch_state_transitionversion fields (document_index_only_delete_transition_{structure,state}_validation, 0 at PV14, 0-and-unreachable in earlier tables per convention).How Has This Been Tested?
rs-drive-abcipipeline suite (batch/tests/document/index_only.rs, yappr-likes fixture): full lifecycle — create, duplicate-collides, second owner may like, owner-scoped delete (Bob deleting "Alice's values" removes only Bob's entries), delete-after-delete →DocumentNotFoundError, unlike, re-like, grovedb integrity sweep. Wrong-kind refusals in both directions (by-id delete on indexOnly type; indexOnlyDelete on stored type), each pinned toInvalidDocumentTransitionActionErrorwithassert_matches!, both assembled by hand since the factory always picks the right kind. Malformed-payload refusal (missing required property; spurious$createdAt).rs-dpp: PV13-rejects / PV14-admits wire-gate pin test; serde round-trip tests for the new kind — JSON and platform-value, non-default base fields, ordinary document properties and$createdAt, asserting the complete flattened wire shape and the recovered value (the guard onBASE_FIELD_NAMES, whose manualDeserializewould otherwise silently route an unlisted base key into document data); umbrella$actionround-trip.rs-drive: spliced-tuple refusal on the two-single-property-indexmarkdoctype (row commitment refuses a tuple assembled from two of the same owner's documents; both real rows survive and stay deletable), plus the existing indexOnly e2e suite green.cargo check --workspace --all-targetsand clippy on the three crates clean; wasm crates checked onwasm32-unknown-unknown.Breaking Changes
Consensus: a new batched transition kind and its validation, PV14-only (unreleased). The kind cannot decode on pre-4.2 software and the basic-structure gate keeps new software rejecting it at check_tx while a pre-PV14 protocol version is active, so historical replay is byte-identical.
Checklist:
Stack: #4491 (DPP schema) → #4492 (storage) → this (supersedes #4493) → query+proofs (#4494) → SDK/e2e (#4495). #4494's executed-transition proofs and #4495's SDK builders pick up their delete-kind match arms when they rebase.
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