data:
{
"_id" : ObjectId("57bd128452cb261e9c676a13"),
"_class" : "com.hunterplus.server.position.red_dot.RedDot",
"positionId" : "576b47f4e698010f7c5da670",
"userId" : "5600c0d10cf21f8a9384543b",
"noticeId" : "57bd128252cb261e9c676a12",
"type" : NumberInt(1)
}
{
"_id" : ObjectId("57bd128b52cb261e9c676a15"),
"_class" : "com.hunterplus.server.position.red_dot.RedDot",
"positionId" : "576b47f4e698010f7c5da670",
"userId" : "5600c0d10cf21f8a9384543b",
"noticeId" : "57bd128b52cb261e9c676a14",
"type" : NumberInt(1)
}
{
"_id" : ObjectId("57bd12d752cb260abc53127e"),
"_class" : "com.hunterplus.server.position.red_dot.RedDot",
"positionId" : "576b47f4e698010f7c5da672",
"userId" : "5600c0d10cf21f8a9384543b",
"noticeId" : "57bd128b52cb261e9c676a14",
"type" : NumberInt(1)
}
{
"_id" : ObjectId("57bd39fc52cb261a0c4462cc"),
"_class" : "com.hunterplus.server.position.red_dot.RedDot",
"positionId" : "576b47f4e698010f7c5da670",
"userId" : "5600c0d10cf21f8a9384543b",
"noticeId" : "57bd39fa52cb261a0c4462cb",
"type" : NumberInt(1)
}
Target dto:
public class RedDotDto {
private String positionId;
private List<String> noticeIdList;
}
Aggregate 1:
Aggregation aggregation =newAggregation(
match(Criteria.where(RedDot.USER_ID).is(userId)),
project(RedDot.POSITION_ID,RedDot.NOTICE_ID).andExclude(Fields.UNDERSCORE_ID),
group(Fields.UNDERSCORE_ID,RedDot.POSITION_ID).push(RedDot.NOTICE_ID).as(RedDotDto.NOTICE_ID_LIST)
);
result 1 :
Aggregate 2
Aggregation aggregation =newAggregation(
match(Criteria.where(RedDot.USER_ID).is(userId)),
project(RedDot.POSITION_ID,RedDot.NOTICE_ID),
group( RedDot.POSITION_ID).push(RedDot.NOTICE_ID).as(RedDotDto.NOTICE_ID_LIST)
);
result 2:
