Examples of com.mongodb.DBRef.fetch()

com.mongodb.DBRef.fetch()
fetches a referenced object from the database @param db the database @param ref the reference @return


    DBObject mapValDBObject = new BasicDBObject();
    mapValDBObject.put("_id", BigInteger.ONE);


    DBRef dbRef = mock(DBRef.class);
    when(dbRef.fetch()).thenReturn(mapValDBObject);


    ((DBObject) dbObject.get("map")).put("test", dbRef);


    MapDBRef read = converter.read(MapDBRef.class, dbObject);

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  @Test
  @SuppressWarnings({ "rawtypes", "unchecked" })
  public void resolvesDBRefMapValue() {


    DBRef dbRef = mock(DBRef.class);
    when(dbRef.fetch()).thenReturn(new BasicDBObject());


    BasicDBObject refMap = new BasicDBObject("foo", dbRef);
    DBObject dbObject = new BasicDBObject("personMap", refMap);


    DBRefWrapper result = converter.read(DBRefWrapper.class, dbObject);

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        if (cached != null) {
            return cached;
        }


        //TODO: if _db is null, set it?
        final DBObject refDbObject = idOnly ? ds.getCollection(key.getKindClass()).findOne(ref) : dbRef.fetch();


        if (refDbObject != null) {
            Object refObj = mapper.getOptions().getObjectFactory().createInstance(mapper, mf, refDbObject);
            refObj = mapper.fromDb(refDbObject, refObj, cache);
            cache.putEntity(key, refObj);

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