org.mongojack.JacksonDBCollection has 2 serialization/deserialization features that should be configurable in MongoItemReader and MongoItemWriter:

org.mongojack.JacksonDBCollection.Feature#USE_STREAM_DESERIALIZATION
org.mongojack.JacksonDBCollection.Feature#USE_STREAM_SERIALIZATION

In addition, we should also be able to configure jackson ObjectMapper, supporting all the jackson usual configuration options/features.

If the MongoItemReader or MongoItemWriter don't have any configuration options for jackson ObjectMapper, then we should use the default ObjectMapper in org.mongojack.JacksonDBCollection (calling org.mongojack.JacksonDBCollection#wrap(com.mongodb.DBCollection, java.lang.Class<T>, java.lang.Class<K>)

Otherwise, we should instantiate jackson ObjectMapper with jackson ObjectMapper features and options, and pass that to org.mongojack.JacksonDBCollection (use org.mongojack.JacksonDBCollection#wrap(com.mongodb.DBCollection, java.lang.Class<T>, java.lang.Class<K>, com.fasterxml.jackson.databind.ObjectMapper)