java – Spring Mongo如何从Aggregation获取列表AggregationOperations

我有一个函数接收聚合聚合作为参数.

我想从聚合中获取所有AggregationOperation.有什么办法吗？

public Aggregation newCustomAggregation(Aggregation aggregation,Criteria c) {
    // How to get list operation aggregation there?
    listOperation.push(Aggregation.match(c));
    return Aggregation
            .newAggregation(listOperations);
}

我的目的是使用我的自定义MatchAggregation新另一个聚合.

解决方法

就像是

public class CustomAggregation extends Aggregation {
      List<AggregationOperation> getAggregationOperations() {
      return operations;
   }
}

public Aggregation newCustomAggregation(Aggregation aggregation,Criteria c) {
     CustomAggregation customAggregation = (CustomAggregation) aggregation;
     List<AggregationOperation> listOperations = customAggregation.getAggregationOperations();
     listOperations.add(Aggregation.match(c));
     return Aggregation .newAggregation(listOperations);
 }

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