Project Validator

Project Validator

Project-wide lint for a Datex Studio branch. The branch is the source of truth: the validator enumerates the branch's configs via dxs source explore configs and bulk-exports them to a throwaway temp directory with dxs source document build (the CLI's offline-analysis path), then runs five cross-component checks against that temp export — checks that per-file validation cannot see in isolation. Returns a structured, read-only punch-list grouped by check type. Never modifies the branch, and never treats a local src/ checkout as authoritative.

This is the project-level validator. It complements per-file validation: component-validator audits one component file end-to-end against its type-specific rule sheet; this skill audits the whole project (or a scope subset) for issues that only appear when you look across files — broken objectType references, OData queries that don't match the live schema, datasource query options that have drifted away from declared outParams, etc. The two skills are designed to be used together — component-validator after authoring each file, project-validator before merging a batch or shipping a release.

See also: component-validator — single-file audit against the per-type creator rule sheet. Use it after authoring or modifying any one component. This skill is the project-level counterpart.

See also: component-wiring-check — chases a specific cross-component reference contract. This skill is broader (5 categories across the whole project) but shallower (lint-grade, not deep wiring trace).

See also: post-edit-verification — quick post-write check on a single file. Different scope and lighter touch than this skill.

Dependencies

• datex-studio-conventions — defaults.md (description ≤100 chars, mandatory description), file-format.md (configurationTypeId table, suffix rules), naming-conventions.md (type-indicator rules). These are the rules the checks below enforce.
• datex-studio-shared / datex-studio-runtime — branch-setup primitives and platform-runtime globals used when interpreting flow code (e.g. resolving $flow.inParams.<name> and $flow.outParams.<name> references).
• component-validator — per-file companion. Sibling scope. When the project validator surfaces a file-local violation that a creator skill's rule sheet documents in detail, route the parent to component-validator for the deep audit.
• schema-explorer — invoked for OData pre-flight (check 4). The project validator must not load raw schema documents into the parent context — always delegate the entity / property / navigation lookups to schema-explorer.
• codebase-research — invoked when a finding needs grounded read-only inspection of supporting context (e.g. confirming an enum's allowed values by fetching the *-customType config from the branch). Optional, on demand.

Mode

This is a read-only project lint. Do NOT modify any files. Do NOT run commands that mutate branch state (no upsert, no --fix, no writes). The validator reports; the parent decides what to do with the findings, and routes fixes back to the matching creator/editor skill.

Workflow

1. Resolve scope

The validator always runs against a branch (follow datex-studio-shared/branch-setup.md to establish the branch ID — never assume one). The caller additionally supplies one of:

• all (default) — every owned config on the branch.
• A check name — descriptions, schema, types, metadata, result-shapes. Run only that check across the project.
• A scope subset — one or more config types (e.g. grid, datasource) or a name pattern. Apply all five checks (or the named check) within that subset only.

If the caller is ambiguous (e.g. just says "validate the project"), default to all owned configs on the branch and report the scope you chose in the output.

2. Enumerate and export the target configs (from the branch)

The branch is the source of truth — do not walk a local src/ checkout. Acquire the configs via the CLI:

# List what's on the branch (optionally filter by type / owned-only / scope)
dxs source explore configs --branch <branchId> --owned-only

# Bulk-export every config to a THROWAWAY temp dir for offline analysis
dxs source document build --branch <branchId> --include-summaries -o "$TMP/dxs-validate"

document build writes one file per config under $TMP/dxs-validate/<App>/<branchId>/local/<type>/<referenceName>.yaml. That temp export is the only thing the checks read or grep — searching a temp file you just fetched is the sanctioned pattern; greping a persistent src/ tree is not. Delete the temp dir when done.

On dxs < 0.5.4 this export was silently incomplete — needs dxs ≥ 0.5.4. Library discovery keyed off an applicationId that the settings/references→AppConfig migration dropped from every reference row, so document build walked only the branch itself; because each branch pass excludes external configs by design, every library config was absent from the export — with exit code 0 and no warning. Checks that resolve a name into a referenced package (types, schema, result-shapes) then read that absence as "component missing" and emit false failures. A clean run from an older build is no information, not a green light: upgrade (dxs update). From 0.5.4 the export includes library branches and prints Warning: could not resolve library '<name>' to a branch for any it still can't place — treat that line as the same gap, reported in-band this time, and scope the affected checks accordingly.

Group the exported configs by type (the export is already organized into per-type folders, and each config carries its configurationTypeId):

• footprintflow — actions (*-footprintFlow)
• flow — functions (*-flow)
• customtype — interfaces / enums (*-customType)
• footprintdatasource — Footprint-tier OData datasources
• datasource — cloud-tier datasources (OData or flow-backed)
• selector, storage, grid, form, editor, hub, backendtest

A config whose type doesn't match the table is recorded as unknown component type and skipped (do not block the run on it).

3. Run the 5 checks

Run each check against the enumerated files. Order doesn't matter; do whichever is cheapest first. Collect findings as a structured list, never edit in-place.

4. Report

Compose the punch-list per the Output format section below. Findings are grouped by check type. End with a one-line summary (total files checked, passes, warnings, failures). Do not propose fixes beyond a one-line pointer.

The 5 Checks

1. Description Validation (descriptions)

Scans: every component file (all suffixes above).

Rule (from datex-studio-conventions/defaults.md and file-format.md):

• description must not be null.
• description must not be "" (empty string).
• description must be ≤ 100 characters. This is a hard SQL column cap on the Footprint side — imports fail with a SQL truncation error when exceeded.

Severity:

• null or "" description → fail.
• > 100 chars description → fail (not a warning — imports break).
• Description present and within cap → pass.

Output line:

[pass] i_awi_configuration-customType.json — "Allocation config interface" (35 chars)
[FAIL] my_action-footprintFlow.json — description is null
[FAIL] orders_grid-grid.json — description is 137 chars (cap is 100)

2. Schema-Code Alignment (schema)

Scans: action files (*-footprintFlow.json) and function files (*-flow.json).

What it checks: the declared inParams / outParams JSON declaration vs. the embedded TypeScript code that lives at nodes[0].stepConfig.executeCodeConfig.code (per the pattern documented in codebase-research — flow code lives inside the JSON, not on top).

Procedure:

1. Parse inParams[] and outParams[] from the JSON.
2. Extract the embedded code string (and iterate nodes[*] for multi-step flows).
3. Heuristic match each declared inParam.id against $flow.inParams.<id> references in the code.
4. Heuristic match each declared outParam.id against $flow.outParams.<id> references in the code.
5. Look for $flow.inParams.<name> or $flow.outParams.<name> references in code that have no matching declaration.

Severity:

• Declared inParam not referenced in code → warning (may be deliberate — kept for back-compat, future use, or external wiring).
• Declared outParam never assigned in code → warning.
• Code references $flow.inParams.<name> / $flow.outParams.<name> that has no matching declaration → fail (runtime error or silent undefined).

Caveat: this is a heuristic string match, not a TypeScript compiler. False positives are acceptable when surfaced as warnings — the caller decides whether each warning is real. Do not escalate a warning to a fail without source-code grounded evidence.

Output line:

[warn] plan_inventory_consumption_action — inParam 'unused_param' declared but not referenced in code
[FAIL] commit_allocation_plan_action — code references $flow.inParams.foo but 'foo' is not declared in inParams

3. Type Resolution (types)

Scans: every component file. Looks for "objectType": "<Package>.<TypeName>" values anywhere in the JSON (commonly inside inParams[*].objectType, outParams[*].objectType, objectTypeDef.properties[*].objectType, and nested datasource shapes).

Rule: every referenced <Package>.<TypeName> must resolve to either:

• A <TypeName> customType config owned by the current package on the branch (a customtype/<TypeName>-customType.* entry in the temp export, equivalently dxs source explore configs --branch <id> --type customtype --search <TypeName>), or
• A type owned by another package the project depends on (treat unknown packages as "out of scope, do not report" unless the caller explicitly asked to chase cross-package references).

Procedure:

1. Determine the current package (read from one of the package's component files; cross-check via folder convention).
2. Collect every objectType string across all scanned component files.
3. For each in-package reference, verify a matching <TypeName> customType config exists on the branch (in the temp export's customtype/ folder). Fast resolution shortcut: pull the branch's nomenclature registry once — dxs configuration nomenclature -b <branchId> returns a flat <Package>.<Type> catalog (with enum members in constantValues) to membership-test every objectType against in one pass, instead of a per-type dxs source explore lookup. See ../datex-studio-shared/context-navigation.md#discovering-custom-types-and-enum-members.
4. Report unresolved references.

Severity:

• Reference to a type in the current package with no matching customType config on the branch → fail.
• Reference whose package is unknown to the project → warning (may be a typo, may be a legitimate external package).

Output line:

[FAIL] orders_grid-grid.json — references `Allocations.i_unknown_type`, no i_unknown_type-customType.json found
[warn] import_orders_action-footprintFlow.json — references `ExternalPkg.i_thing`; ExternalPkg is unknown to this project

4. OData Schema Pre-Flight (metadata)

Scans: OData datasource files — *-footprintDatasource.json, and *-datasource.json files whose type is "oDataQuery". Skips flow-backed datasources.

Procedure:

1. Resolve the connection. Each datasource references a connection (a connection ID or a connection name). Determine it from the file. If ambiguous, ask the caller which connection to validate against.
2. Delegate to schema-explorer for every entity / property / navigation lookup. Do not load raw OData metadata documents into the parent context — schema-explorer returns concise structured answers and handles connection resolution and FootPrintApi special cases.
3. For each OData datasource:
   • Confirm the entitySet in paths[0].entitySet exists in the OData schema.
   • Confirm every property in queryOptions.selects exists on the entity type.
   • Confirm every property referenced in queryOptions.filters (filter-expression operands) exists on the entity type.
   • Confirm every navigation property in queryOptions.expands exists on the entity type.
4. Report mismatches.

Severity:

• Missing entity set → fail.
• Missing select/filter property → fail.
• Missing navigation in expand → fail.
• Schema lookup failed (connection unreachable, schema not loaded) → warning with a note that the check could not run for this file. Do not fail the entire run on a single unreachable connection — record the warning and continue.

Output line:

[FAIL] fpds_get_material-footprintDatasource.json — entitySet 'Materials' not found in schema (did you mean 'Material'?)
[FAIL] ds_orders_grid-datasource.json — selects: property 'CustomeName' not on entity 'Orders' (typo?)
[warn] ds_legacy_thing-datasource.json — could not reach connection 'LegacyProd'; check skipped

5. Result-Shape Sync (result-shapes)

Scans: all datasource files (both *-datasource.json and *-footprintDatasource.json, both OData and flow-backed).

Rule: the datasource's query-side shape (queryOptionsObjectTypeDef) and its consumer-facing shape (outParams[0].objectTypeDef) must agree. Each property on one side should have a matching entry on the other with the same id and the same type. Drift between these two declarations is the canonical "datasource works in Studio preview but breaks consumers" failure mode.

Procedure:

1. Read queryOptionsObjectTypeDef.properties[] from the file.
2. Read outParams[0].objectTypeDef.properties[] from the file.
3. Pair properties by id.
4. Flag any property on one side without a counterpart on the other, or any id pair whose type differs.

Severity:

• Property present on one side, missing on the other → fail.
• Property pair with mismatched type → fail.
• Property pair with matching id and type but different ordering / metadata → nit.

Output line:

[FAIL] ds_open_orders-datasource.json — `queryOptionsObjectTypeDef.OrderId` is `int32`, `outParams[0].objectTypeDef.OrderId` is `string`
[FAIL] fpds_lots-footprintDatasource.json — `outParams[0].objectTypeDef` declares property `LotCode`, missing from `queryOptionsObjectTypeDef`

Output Format

Group findings by check type, in the order of the five checks above. Within each group, list failures first, then warnings, then nits. Pass-lines are optional — include them when the caller asked for a verbose run, omit them when the run is the default lint summary. Always end with a one-line summary.

## 1. Description Validation
  [FAIL] my_action-footprintFlow.json — description is null
  [FAIL] orders_grid-grid.json — description is 137 chars (cap is 100)
  [pass] i_awi_configuration-customType.json — "Allocation config interface" (35 chars)
  ...

## 2. Schema-Code Alignment
  [FAIL] commit_allocation_plan_action — code references $flow.inParams.foo but 'foo' is not declared in inParams
  [warn] plan_inventory_consumption_action — inParam 'unused_param' declared but not referenced

## 3. Type Resolution
  [FAIL] orders_grid-grid.json — references `Allocations.i_unknown_type`, no i_unknown_type-customType.json found

## 4. OData Schema Pre-Flight
  [FAIL] fpds_get_material-footprintDatasource.json — entitySet 'Materials' not found (did you mean 'Material'?)
  [warn] ds_legacy_thing-datasource.json — could not reach connection 'LegacyProd'; check skipped

## 5. Result-Shape Sync
  [FAIL] ds_open_orders-datasource.json — `OrderId` type drift: query=int32, outParams=string

## Summary
  files checked: 142
  passes: 128
  warnings: 7
  failures: 7
  scope: all

If a check ran with no findings, write (no issues) under that heading rather than omitting it — explicit emptiness is more legible than silent absence.

Rules

• Read-only. Do not modify any files. Do not auto-fix. Do not run mutating dxs commands. The validator's job is to report; the parent (or the user) decides what to do.
• Punch-list, not rewrite. Findings are one-line citations with file path and a brief evidence line. Do not include long code suggestions or proposed JSON. If a fix is non-obvious, name the matching creator skill that owns the fix (e.g. "route to datasource-creator"), not the fix itself.
• Delegate OData schema to schema-explorer. Never load raw OData metadata into the parent context. This is the single biggest context-poisoning anti-pattern in Datex Studio work.
• Heuristic checks may warn, not fail. Schema-code alignment in particular is a string-match lint, not a compiler. Use warning for "may be real" and fail only when the evidence is unambiguous.
• Scope discipline. When the caller scopes to a check name, run only that check. When they scope to a subtree, walk only that subtree. Do not expand scope on your own initiative.
• Don't speculate about intent. If a violation could be deliberate (a kept-around inParam for external wiring, an outParams declared wider than the query for a future-proofing reason), flag it as a warning with a note — not as a failure.
• One run per invocation. Don't loop the validator until "clean." Surface the punch-list and let the parent decide whether to iterate.
• Branch is the source of truth. Enumerate and export configs from the branch via dxs source explore configs / dxs source document build. Never read a local src/ checkout as authoritative.
• No writes to the branch, no fix patches. The only local artifact is the throwaway dxs source document build temp export, which the checks read and which you delete when done. The report itself is returned in the response body — no references/, log, or patch files.