Storage: Add extend_json Tag for Enhanced JSON Field Handling in bulk_update Operations
#6659
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In #6587, it was determined that when performing
bulk_updateoperations on JSON fields likeextra, the existing JSON should be extended rather than overwritten. To address this, this PR introduces a new tag,extend_json, that controls howbulk_updatehandles JSON fields. By default,extend_jsonis set toFalse, ensuring backward compatibility. When explicitly enabled,bulk_updatemerges the provided JSON with the existing JSON field, following to the RFC 7386 - JSON Merge Patch standard. This feature supports both SQLite and PostgreSQL backend.Note:
attributesandextraare JSON fields of interest, and few additional JSON fields will be introduced. As a result, automatic detection of JSON fields is not implemented.bulk_updatelogic for the SQLite DOS backend currently resides inPsqlDosBackend. A dirty workaround has to be added inPsqlDosBackendto address the differences between SQLite and PostgreSQL. This is also stated in a comment block in the code.