Using Jongo only for Object Mapping

[Christian F]

Hello,

I am using the official java mongodb driver with some minimalistic inhouse framework. Sadly I cannot use jongo for accessing the mongodb. But I would like to use Jongo for mapping Objects into DBObjects and back.

Do you know, if that is possible?

I only need methods like 

DBObject writeDBObject(Object) 

and 

Object readDBObject(DBObject)

I tried to use jackson. But then I have to write some custom mapping for Dates and Ids and so on. 

Thank you very much,

Chris

[Christian F]

Hello,

I am doing this now:

private static final Mapper JONGO_MAPPER = new JacksonMapper.Builder().build();

public static <T> Document encode(final T pojo) {
  // TODO: when jongo adds mongo 3.0 support adjust this statement - can be much shorter
  return Document.parse(JSON.serialize(JONGO_MAPPER.getMarshaller().marshall(pojo).toDBObject()));
}

public static <T> T decode(final Document document, final Class<T> clazz) {
  // TODO: when jongo adds mongo 3.0 support adjust this statement - can be much shorter
  return JONGO_MAPPER.getUnmarshaller().unmarshall(Bson.createDocument((DBObject) JSON.parse(document.toJson())), clazz);
}

Now I can transform a pojo into a mongodb Document.

Sadly Jongo currently does not support Documents, only the old DBObjects. So I needed to transform the DBObject to json and then into a document.

If there is a better solution, it would be very nice to know.

Thank you,

Chris

[Benoît Guérout]

Hello,

Jongo 1.4 is pending since few months but this version should allow Jongo to deal with native mongo driver : 

https://github.com/bguerout/jongo/issues/302

Let me know if this is what you need.

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