You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
One specific use case may be reducing data in the database and thus converting certain values to null - with the intention of them not being written. With the provided examples above however, this does not appear to be the case.
With the release of spring-boot 3.2.0 a change to the deserialization was noted, which was addressed in a previous issue: #4571
The change itself makes sense, as the serialized null value should be respected. The analysis surprisingly led to a different issue as null-values are being serialized despite the defaulting setting of not writing null-values as specified here: https://docs.spring.io/spring-data/mongodb/docs/current/api/org/springframework/data/mongodb/core/mapping/Field.html#write()
However, that check appears to only apply to unconverted values, as seen in:
spring-data-mongodb/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/MappingMongoConverter.java
Line 906 in 286404d
One specific use case may be reducing data in the database and thus converting certain values to null - with the intention of them not being written. With the provided examples above however, this does not appear to be the case.
Additionally it is interesting, that the Converter Javadoc specifies that the source may never be null (https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/core/convert/converter/Converter.html#convert(S)) - even though this can occur when converting a value to null during serialization and then deserializing said value with the corresponding ReadingConverter.
An example project verifying the issue can be found at https://github.com/CybAtax/null-serialization-demo/tree/main
Any assistance in how to resolve this will be greatly appreciated.
The text was updated successfully, but these errors were encountered: