fix: json patch throw error when remove null property

[vietnguyen]

https://dhis2.atlassian.net/browse/DHIS2-16299

Issue

Problem in JsonPatchManager:
The JsonPatchManager relies on the presence of properties within a JsonNode to validate patch paths. However, our Jackson ObjectMapper does not serialize properties with null values into JsonNode. This leads to an issue where patch paths referencing null properties are incorrectly deemed invalid, despite these properties existing in the original object.

Fix

• Validate the patch path in JsonpPatchManager before applying the patch operators.
• Remove the path validation in RemoveOperation and related tests.

Test

Validation Procedure:

1. Initial Setup:
   Begin by creating a new UserGroup instance where the code property is intentionally set to null.

2. Patch Request:
   Execute a JSON patch request to update the code property. Use the following curl command:

curl -X PATCH -v http://localhost:9090/api/userGroups/vAvEltyXGbD
-H "Content-Type: application/json-patch+json"
-d '[{ "op": "replace", "path": "/code", "value": "bonthe" }]'
-u admin:district

3. Outcome Verification:
   Confirm that the code property is correctly updated to "bonthe".

[codecov]

Codecov Report

Merging #15904 (9e4fcc4) into master (905ccae) will increase coverage by 36.02%.
Report is 4 commits behind head on master.
The diff coverage is 100.00%.

Additional details and impacted files

@@              Coverage Diff              @@
##             master   #15904       +/-   ##
=============================================
+ Coverage     30.38%   66.41%   +36.02%     
- Complexity    14192    31510    +17318     
=============================================
  Files          3497     3497               
  Lines        130353   130370       +17     
  Branches      15208    15209        +1     
=============================================
+ Hits          39605    86579    +46974     
+ Misses        87182    36695    -50487     
- Partials       3566     7096     +3530     

Flag	Coverage Δ
integration	50.37% <100.00%> (?)
integration-h2	32.31% <88.88%> (?)
unit	30.37% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...java/org/hisp/dhis/jsonpatch/JsonPatchManager.java	93.02% <100.00%> (+93.02%)	⬆️
.../jackson/jsonpatch/operations/RemoveOperation.java	80.00% <100.00%> (ø)

... and 2178 files with indirect coverage changes

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[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[david-mackessy]

lovely