fix(datamapper): disable copy-of on leaf fields and hide for JSON target by tplevko · Pull Request #4228 · KaotoIO/kaoto

tplevko · 2026-10-21T13:54:17Z

Closes #4118

Summary by CodeRabbit

Bug Fixes
- Copy-of selector actions are unavailable for nodes in JSON Schema documents and for field nodes without children. The action remains available on container fields, and other node types retain their existing availability behavior.

coderabbitai · 2026-10-21T13:54:24Z

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packages/ui/src/services/visualization/mapping-action-registry.service.ts

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📝 Walkthrough

The CopyOfSelector action is unavailable for JSON Schema documents. For field nodes without children, the action is disabled. Tests cover a container field, leaf fields, and a JSON target document.

Changes: Copy-of eligibility

Layer / File(s)	Summary
Copy-of action eligibility `packages/ui/src/services/visualization/mapping-action-registry.service.ts`, `packages/ui/src/services/visualization/mapping-action.service.test.ts`	The registry hides CopyOfSelector for JSON Schema documents and disables it for field nodes without children. Tests cover container and leaf fields, and verify that the action is absent for a JSON target document.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix · Severity of issue fixed: Low

Suggested reviewers: igarashitm

Merge Risk: ⚪ Minimal · up to daeb0

No actionable merge-blocking risk was identified in the reviewed changes.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main changes: disabling Copy-of for leaf fields and hiding it for JSON targets.
Linked Issues check		Issue `#4118` has two coding requirements. (1) Disable `Add copy selector (copy-of)` on leaf fields. At head, `MappingActionRegistryService.ACTION_REGISTRY` sets `CopyOfSelector.isDisabled` to `Visualiz…
Out of Scope Changes check		The production change is limited to the `CopyOfSelector` entry in `mapping-action-registry.service.ts`. It adds a JSON Schema check to `isAllowed` and the `DocumentDefinitionType` import. The test cha…
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…

Full details: Linked Issues check

Explanation

Issue #4118 has two coding requirements. (1) Disable Add copy selector (copy-of) on leaf fields. At head, MappingActionRegistryService.ACTION_REGISTRY sets CopyOfSelector.isDisabled to VisualizationUtilService.isFieldNode(n) && !DocumentService.hasChildren(n.field), so leaf field nodes are disabled. Tests cover a disabled leaf (OrderId, OrderPerson) and an enabled container (ShipTo). (2) Hide copy-of for JSON target documents. At head, CopyOfSelector.isAllowed returns false when n.mappingTree?.documentDefinitionType === DocumentDefinitionType.JSON_SCHEMA, which removes the action from the menu. A test asserts the action is absent for JSON targets. The whole-PR diff could not be read because changed blobs are missing from the checkout. The head file content and the supplied change summary establish the behavior, so this verdict relies on head content and the summary.

Full details: Out of Scope Changes check

Explanation

The production change is limited to the CopyOfSelector entry in mapping-action-registry.service.ts. It adds a JSON Schema check to isAllowed and the DocumentDefinitionType import. The test changes in mapping-action.service.test.ts cover the leaf, container, and JSON target behavior required by #4118. The whole-PR diff could not be read, so the base-to-head delta is taken from the supplied summary (+3/-0 in the registry file, +43/-1 in the test file). No unrelated change is shown.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2 files.

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_{A rabbit checks the menu with care,
JSON targets find no copy there.
Leaf fields rest; containers stay,
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Actionable comments posted: 1

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Inline comments:
Review comments at
@packages/ui/src/services/visualization/mapping-action-registry.service.ts:
- Around line 172-175: Update the isDisabled predicate in the mapping-action
registry to use DocumentService.hasChildren for both TargetFieldNodeData and
FieldItemNodeData, disabling copy-of only when the field has no children,
including children referenced through namedTypeFragmentRefs.

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packages/ui/src/services/visualization/mapping-action-registry.service.ts
packages/ui/src/services/visualization/mapping-action.service.test.ts

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shivamG640 · 2026-10-22T10:33:09Z

Changes look good in the UI: In the XML doc, the copy-of is disabled and completely hidden in the JSON doc for the leaf node.

shivamG640 · 2026-10-22T10:38:16Z

It takes into account the FieldItemNodeData as well:

mmelko · 2026-10-23T07:37:12Z

+      isDisabled: (n) => {
+        if (n instanceof TargetFieldNodeData) return !DocumentService.hasChildren(n.field);
+        if (n instanceof FieldItemNodeData) return !DocumentService.hasChildren(n.field);
+        return false;


isFieldNode() already covers both instanceof checks here — this could be one line:

isDisabled: (n) => VisualizationUtilService.isFieldNode(n) && !DocumentService.hasChildren(n.field),

Thanks @mmelko, updated

Closes KaotoIO#4118

sonarqubecloud · 2026-10-23T12:48:50Z

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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0.0% Coverage on New Code
0.0% Duplication on New Code

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tplevko force-pushed the fix/issue-4118-disable-copy-of-on-leaf-fields branch 2 times, most recently from ae7031b to d7f5b22 Compare October 22, 2026 08:25

tplevko marked this pull request as ready for review October 22, 2026 08:46

coderabbitai Bot reviewed Oct 22, 2026

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Comment thread packages/ui/src/services/visualization/mapping-action-registry.service.ts Outdated

tplevko force-pushed the fix/issue-4118-disable-copy-of-on-leaf-fields branch from d7f5b22 to 83390af Compare October 22, 2026 09:49

shivamG640 previously approved these changes Oct 22, 2026

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tplevko dismissed shivamG640’s stale review via 229b8e7 October 22, 2026 12:35

tplevko force-pushed the fix/issue-4118-disable-copy-of-on-leaf-fields branch from 83390af to 229b8e7 Compare October 22, 2026 12:35

tplevko requested a review from shivamG640 October 22, 2026 13:01

mmelko requested changes Oct 23, 2026

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fix(datamapper): disable copy-of on leaf fields and hide for JSON target

daeb0a0

Closes KaotoIO#4118

tplevko force-pushed the fix/issue-4118-disable-copy-of-on-leaf-fields branch from 229b8e7 to daeb0a0 Compare October 23, 2026 12:46

mmelko approved these changes Oct 23, 2026

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tplevko merged commit 978c5c7 into KaotoIO:main Oct 23, 2026
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fix(datamapper): disable copy-of on leaf fields and hide for JSON target - #4228

fix(datamapper): disable copy-of on leaf fields and hide for JSON target#4228
tplevko merged 1 commit into
KaotoIO:mainfrom
tplevko:fix/issue-4118-disable-copy-of-on-leaf-fields

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