mongodb怎么多表联查？

LookupOperation lookupOperation=LookupOperation.newLookup().

                    from("DYNC_EXT_TestInstanceItem").  //关联从表名

                    localField("partVersion").     //主表关联字段

                    foreignField("partVersion").//从表关联的字段

                    as("result");   //查询结果名

AggregationOperation match = Aggregation.match(criteria);

Aggregation aggregation=Aggregation.newAggregation(match, lookupOperation); //多条件

List<Map> results = mongoTemplate.aggregate(aggregation,"DYNC_EXT_TestInstance",

 Map.class).getMappedResults();

//上面的DYNC_EXT_TestInstance必须是查询的主表名

System.out.println(JSON.toJSONString(results));