convertValue not working correctly with antpathfilter

[larjohn]

The following does not work correctly:

            ObjectMapper mapper = buildObjectMapper();

            String[] includedFieldNames = { "id", "judgementNo", "judgementDate" ,"courthouse","courthouse.name", "@loaded"};
            mapper.addMixIn(Object.class, AntPathFilterMixin.class);


            com.fasterxml.jackson.databind.type.CollectionType collectionType =  mapper.getTypeFactory().constructCollectionType(List.class, Object.class);

// Create map

            FilterProvider filterProvider = new SimpleFilterProvider().addFilter("antPathFilter", new AntPathPropertyFilter(includedFieldNames));
            mapper.setFilterProvider(filterProvider);
            List<Object> map = mapper.convertValue(judgements, collectionType);

It does not serialize court properties, so it comes empty in the map. It seems that it does not guess the path correctly in this.include(writer, jgen).

I am out of time currently, so can't provide more details right now, in case you needed them.

[larjohn]

Writing as string works fine

[Antibrumm]

I have never used the filter for anything else than serialization. Could you please provide me with the implementation of judgements. Ideally with a unittest? ;) I will take a look at it once I got some time.

[larjohn]

judgements is a List where Judgement is a class that has a field courthouse, of type Courthouse (fields "name" etc)

I will try to test it myself when I get some time as well, I just reported it in case you had any idea immediately.

[Antibrumm]

I took a little look into the issue and i found out that the WriteContexts are created differently within Jackson for writeAsString and convert. This results in an issue during the evaluation of the pathToTest. I will have to dig deeper into the code to see whats happening exactly.

Here's a printout of the two approaches:

Write to String

id
judgementNo
judgementDate
courthouse
courthouse.id
courthouse.name
id
judgementNo
judgementDate
courthouse
courthouse.id
courthouse.name

[{"id":1,"judgementNo":"1","judgementDate":1443856979489,"courthouse":{"name":"Courthouse 1"}},{"id":2,"judgementNo":"2","judgementDate":1443856979491,"courthouse":{"name":"Courthouse 2"}}]

Convert value

id
judgementNo
judgementDate
courthouse
id.id <-- here the parent context contains "id" instead of "courthouse"
id.name
id
judgementNo
judgementDate
courthouse
id.id
id.name

[{id=1, judgementNo=1, judgementDate=1443856979489, courthouse={}}, {id=2, judgementNo=2, judgementDate=1443856979491, courthouse={}}]

[Antibrumm]

Jackson fixes the issue in version 2.6.4
FasterXML/jackson-databind#984