Redis client filters the null values with the mget command

[Plawn]

Describe the bug

In the redis documentation, here : https://redis.io/commands/mget/

The missing values should be returned as null, it enables to detect in an efficient way, which keys are missing or have been deleted due to timeout policies.

However, the implementation of the ReactiveRedisClient uses the io.quarkus.redis.runtime.datasource.Marshaller which filters this values with the method #decodeAsOrderedMap.

The null values should not be filtered and the user should do it, if necessary.

Expected behavior

More compliance with the redis documentation, and non filtered null values.

Actual behavior

The null values are filtered by default.

How to Reproduce?

1. Create a quarkus app with version 2.12.2.Final
2. Create a ReactiveRedisDatasource
3. use the mget command to fetch non existing values
4. Recover an empty map

Output of uname -a or ver

No response

Output of java -version

No response

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.12.2.Final

Build tool (ie. output of mvnw --version or gradlew --version)

maven

Additional information

No response

[quarkus-bot]

/cc @cescoffier, @gsmet, @machi1990

[cescoffier]

One solution would be to have the entries in the map (key -> null). Would that work for you?

[Plawn]

Yes thats perfect !, we just have to remove the null check, it should not be breaking anything as the filter was not stated in the documentation

[cescoffier]

@Plawn See #28056.