从过滤器mongodb springdata获取字段数（在mongodb springdata中按过滤器数组分组）

Question

我的文档结构如下：

{
    "userId":"A",
    "empId": "123",
    "subId":"1",
    "type":"Error"
    "fieldChange":[
        {
            "changeFieldCategoryName":"Permanent Addr",
            "changeFieldName":"Street Addr 1"
        },
        {
            "changeFieldCategoryName":"Permanent Addr",
            "changeFieldName":"Street Addr 2"
        },
        {
            "changeFieldCategoryName":"Mailing Addr",
            "changeFieldName":"Street Addr 1"
        },
        {
            "changeFieldCategoryName":"Mailing Addr",
            "changeFieldName":"Street Addr 1"
        }
    ]
 },
  {
    "userId":"A",
    "empId": "123",
    "subId":"2",
    "type":"Success",
    "fields":[
        {
            "changeFieldCategoryName":"Permanent Addr",
            "changeFieldName":"Street Addr 1"
        },
        {
            "changeFieldCategoryName":"Permanent Addr",
            "changeFieldName":"Street Addr 2"
        },
        {
            "changeFieldCategoryName":"Mailing Addr",
            "changeFieldName":"Street Addr 1"
        },
        {
            "changeFieldCategoryName":"Mailing Addr",
            "changeFieldName":"Street Addr 2"
        }
    ]
 }

我需要获得输出为 “成功”和“错误”是“类型”字段。

 [
     {
     "value of "Type field":{
        "Permanent Addr": {
         "Street Addr 1": 2,
         "Street Addr 2": 2,
        },
        "Mailing Addr": {
         "Street Addr 1": 2,
         "Street Addr 2": 2,
        }
     },
     "value of "Type field":{
     "Permanent Addr": {
         "Street Addr 1": 2,
         "Street Addr 2": 2,
        }
        ,
        "Mailing Addr": {
         "Street Addr 1": 2,
         "Street Addr 2": 2,
        }
     }
 ]

我是聚合新手，可以，有人帮助过我，我已经尝试过 这样的人可以帮我吗，我尝试了不同的方法。没有得到 这个

Criteria criteria = new Criteria();
criteria.and("userId").is(userId);
criteria.and("subId").is(subId);
MatchOperation matchOperation = Aggregation.match(criteria);
//AggregationOperation unWindOperation = Aggregation.unwind("fieldChange", true);
GroupOperation groupOperations = Aggregation.group("fieldChange.changeFieldCategoryName", 
        "fieldChange.changechangeFieldName")
        .count().as("errorCount")
        //.addToSet("_id").as("ids")
        ;
//AggregationOperation projectOperation = Aggregation.project()
//.and("fieldChange.changeFieldCategoryName").as("fieldType")
//.and("fieldChange.changechangeFieldName").as("dataField");

List<AggregationOperation> operations = new ArrayList<>();
operations.add(matchOperation);
//operations.add(unWindOperation);
//operations.add(projectOperation);
operations.add(groupOperations);
Aggregation aggregation = Aggregation.newAggregation(operations);

AggregationResults results = mongoTemplate.aggregate(aggregation, Collection.class, String.class);