feat: Update JSON Schema for expression component

[TomasEng]

Description

This pull request updates the JSON Schema used in the expression editor in Studio with the new list, object and jmespath functions.

Current:

This pull request:

Verification

• Related issues:
  • Support lists in expressions app-frontend-react#4189
  • Support objects in expressions app-frontend-react#4190
  • Add JMESPath expression app-frontend-react#4196
• Your code builds clean without any errors or warnings
• Manual testing done (required)
• No need to add tests; schema validation is already covered

Summary by CodeRabbit

Release Notes

• New Features
  • Enhanced expression language support by expanding allowed expression types, including component/data model lookups and JMESPath function references
  • Extended JMESPath results handling across additional expression contexts (string, boolean, numeric, list, and object)
  • Added support for new expression function forms, including list/object variants and a two-argument jmespath form (data to query plus query string)

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 3881e4ea-7acb-42ed-84e8-d5a76220d3a0

📥 Commits

Reviewing files that changed from the base of the PR and between 7992c4d and 04c9571.

📒 Files selected for processing (1)

• src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json

🚧 Files skipped from review as they are similar to previous changes (1)

• src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json

---

📝 Walkthrough

Walkthrough

The expression JSON schema is updated to extend type union definitions (any, strict-string, strict-boolean, strict-number, strict-list, strict-object) to accept func-jmespath, func-list, func-object, and func-countDataElements. New definitions entries for func-list, func-object, and func-jmespath are added, specifying their array forms and argument constraints.

Changes

Expression Schema Extensions

Layer / File(s)	Summary
Type union expansions for jmespath and countDataElements src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json	definitions.any.anyOf gains func-component, func-dataModel, and func-jmespath; strict-string and strict-boolean gain func-jmespath; strict-number gains func-countDataElements and func-jmespath; strict-list and strict-object each gain func-jmespath alongside their existing constructors.
New func-list, func-object, and func-jmespath definitions src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json	Adds definitions.func-list, definitions.func-object, and definitions.func-jmespath, specifying expected array formats, argument shapes, and the two-argument structure required by jmespath (data argument and query string argument).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Altinn/altinn-studio#18974: Extends the expression JSON schema's list-related function support, overlapping on the same func-list and list-expression surface area modified here.
• Altinn/altinn-studio#19028: Introduces and wires func-jmespath in the expression JSON schema, targeting the same JMESPath support in the expression language.

Suggested labels

area/studio-components

Suggested reviewers

• olemartinorg

Poem

🐇 Hop, hop through the schema tree,
JMESPath joins the family!
func-list and func-object find their place,
Each union grows with newfound grace.
The rabbit stamps the JSON done —
More expressions for everyone! 🎉

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarises the main change: updating the JSON Schema file for the expression component, which directly aligns with the changeset.
Description check	✅ Passed	The description covers all required template sections: detailed description of changes, verification checklist completed with related issues linked, build confirmation, and manual testing confirmation.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch update-json-schema-for-expression-component

---

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[coderabbitai]

Actionable comments posted: 1

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json (1)

37-46: ⚠️ Potential issue | 🟠 Major | ⚡ Quick win

any currently excludes list/object expressions, which blocks new function composition

Line 37-46 defines #/definitions/any without #/definitions/strict-list and #/definitions/strict-object. That prevents func-list/func-object outputs from being used in positions typed as any (including Line 679 in func-jmespath, and existing func-if/func-equals arguments).

Suggested fix

     "any": {
       "title": "Any expression",
       "anyOf": [
         { "type": "null", "title": "Null/missing value" },
         { "$ref": "`#/definitions/strict-string`" },
         { "$ref": "`#/definitions/strict-boolean`" },
         { "$ref": "`#/definitions/strict-number`" },
+        { "$ref": "`#/definitions/strict-list`" },
+        { "$ref": "`#/definitions/strict-object`" },
         { "$ref": "`#/definitions/func-if`" },
         { "$ref": "`#/definitions/func-component`" },
         { "$ref": "`#/definitions/func-dataModel`" },
         { "$ref": "`#/definitions/func-jmespath`" }
       ]
     },

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In
`@src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json`
around lines 37 - 46, The anyOf array in the `#/definitions/any` section is
missing references to strict-list and strict-object type definitions, which
prevents func-list and func-object outputs from being used in positions typed as
any. Add two new items to the anyOf array: a reference to
`#/definitions/strict-list` and a reference to `#/definitions/strict-object`,
alongside the existing references to strict-string, strict-boolean,
strict-number, and the function definitions.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In
`@src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json`:
- Around line 673-683: The func-jmespath schema definition is missing a minItems
constraint that enforces the required 2-argument (plus function name) structure.
The schema currently has items defined as a tuple array with additionalItems set
to false, but this allows fewer than the required 3 items. Add "minItems": 3 to
the func-jmespath schema object to ensure that invocations must include the
function name, data argument, and query string argument, rejecting malformed
calls that lack required parameters.

---

Outside diff comments:
In
`@src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json`:
- Around line 37-46: The anyOf array in the `#/definitions/any` section is missing
references to strict-list and strict-object type definitions, which prevents
func-list and func-object outputs from being used in positions typed as any. Add
two new items to the anyOf array: a reference to `#/definitions/strict-list` and a
reference to `#/definitions/strict-object`, alongside the existing references to
strict-string, strict-boolean, strict-number, and the function definitions.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: c513f8d4-54ab-4083-8a4f-ca1c0bdf8fd4

📥 Commits

Reviewing files that changed from the base of the PR and between bdbaff4 and 7992c4d.

📒 Files selected for processing (1)

• src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.88%. Comparing base (070c7ab) to head (535626f).
⚠️ Report is 166 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #19254      +/-   ##
==========================================
+ Coverage   95.84%   95.88%   +0.03%     
==========================================
  Files        3028     3035       +7     
  Lines       39819    39763      -56     
  Branches     4910     4901       -9     
==========================================
- Hits        38166    38128      -38     
+ Misses       1235     1222      -13     
+ Partials      418      413       -5     

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