In moving from Jackson 2.7.6 to 2.8.3, we are now getting compiler warnings with regards to our use of the SerializationFeature.WRITE_EMPTY_JSON_ARRAYS. From what I can tell, the recommendation is to replace this with JsonInclude.Include.NON_EMPTY.

Our code previously looked like this:

public static ObjectMapper getJacksonObjectMapper() {
    ObjectMapper mapper = new ObjectMapper();
    mapper.configure(SerializationFeature.INDENT_OUTPUT, true);
    mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
    mapper.configure(SerializationFeature.WRITE_EMPTY_JSON_ARRAYS, false);
    mapper.setSerializationInclusion(JsonInclude.Include.NON_EMPTY);
    return mapper;
}

and when serializing JSON, empty arrays are omitted.

If I comment out the deprecated WRITE_EMPTY_JSON_ARRAYS line, and write the exact same object, the JSON has empty array elements within it.

Here is a simple test case, just unzip and run mvn package and look at the test output and you will see something that looks like the following:

Running test.EmptyArraysTest

Printing object with WRITE_EMPTY_JSON_ARRAYS set to false:

{
"id" : "123"
}

Printing object without WRITE_EMPTY_JSON_ARRAYS:

{
"id" : "123",
"databases" : [ ]
}

What am I missing?
jackson-empty-arrays-test.zip