Return xml inside JSON status

[wangf1122]

After batch editing several records, the history is the status in the database is stored as JSON and XML embedded.

When trying to view the previous and current version from UI:

The API specify the format as XML

core-geonetwork/services/src/main/java/org/fao/geonet/api/records/MetadataWorkflowApi.java

Line 814 in da294f7

MediaType.APPLICATION_XML_VALUE

core-geonetwork/services/src/main/java/org/fao/geonet/api/records/MetadataWorkflowApi.java

Line 844 in da294f7

MediaType.APPLICATION_XML_VALUE

So the browser cannot render the text:

The JSON format is not very compactible to the API. I am adding a JSON conversion to XML to render the API properly.

Checklist

• I have read the contribution guidelines
• Pull request provided for main branch, backports managed with label
• Good housekeeping of code, cleaning up comments, tests, and documentation
• Clean commit history broken into understandable chucks, avoiding big commits with hundreds of files, cautious of reformatting and whitespace changes
• Clean commit messages, longer verbose messages are encouraged
• API Changes are identified in commit messages
• Testing provided for features or enhancements using automatic tests
• User documentation provided for new features or enhancements in manual
• Build documentation provided for development instructions in README.md files
• Library management using pom.xml dependency management. Update build documentation with intended library use and library tutorials or documentation

[CLAassistant]

All committers have signed the CLA.

[josegar74]

I works, but at the same time is not very consistent to store in the same field sometimes xml content and another times json content.

It would be better to store always JSON and with the updated XML and some additional information with the context of the changes: batch editor (as it is now), metadata editor, etc. But this is out of the scope for this pull request.