How to use Spring Data Mongo distinct method with query and limit
Looking at the following code:
mongoOps.getCollection("FooBar")
.distinct("_id", query(where("foo").is("bar")).limit(10).getQueryObject());
I would expect this to return only the first 10 distinct _ids of collection FooBar.
But unfortunately, running this against a Collection having more than 10 documents matching the criteria, it returns all of them ignoring the limit(10) specified here.
_id is an ObjectId.
How can I achieve this?
Is it a bug in Spring Data?
I'm already aware how I can achieve this using an aggregate but I'm trying to simplify the code if possible since using an aggregate takes many more lines of code.
FYI: I'm using Spring Data Mongodb 1.10.10 and unfortunately, updating is currently not an option.
java mongodb spring-data
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Looking at the following code:
mongoOps.getCollection("FooBar")
.distinct("_id", query(where("foo").is("bar")).limit(10).getQueryObject());
I would expect this to return only the first 10 distinct _ids of collection FooBar.
But unfortunately, running this against a Collection having more than 10 documents matching the criteria, it returns all of them ignoring the limit(10) specified here.
_id is an ObjectId.
How can I achieve this?
Is it a bug in Spring Data?
I'm already aware how I can achieve this using an aggregate but I'm trying to simplify the code if possible since using an aggregate takes many more lines of code.
FYI: I'm using Spring Data Mongodb 1.10.10 and unfortunately, updating is currently not an option.
java mongodb spring-data
add a comment |
Looking at the following code:
mongoOps.getCollection("FooBar")
.distinct("_id", query(where("foo").is("bar")).limit(10).getQueryObject());
I would expect this to return only the first 10 distinct _ids of collection FooBar.
But unfortunately, running this against a Collection having more than 10 documents matching the criteria, it returns all of them ignoring the limit(10) specified here.
_id is an ObjectId.
How can I achieve this?
Is it a bug in Spring Data?
I'm already aware how I can achieve this using an aggregate but I'm trying to simplify the code if possible since using an aggregate takes many more lines of code.
FYI: I'm using Spring Data Mongodb 1.10.10 and unfortunately, updating is currently not an option.
java mongodb spring-data
Looking at the following code:
mongoOps.getCollection("FooBar")
.distinct("_id", query(where("foo").is("bar")).limit(10).getQueryObject());
I would expect this to return only the first 10 distinct _ids of collection FooBar.
But unfortunately, running this against a Collection having more than 10 documents matching the criteria, it returns all of them ignoring the limit(10) specified here.
_id is an ObjectId.
How can I achieve this?
Is it a bug in Spring Data?
I'm already aware how I can achieve this using an aggregate but I'm trying to simplify the code if possible since using an aggregate takes many more lines of code.
FYI: I'm using Spring Data Mongodb 1.10.10 and unfortunately, updating is currently not an option.
java mongodb spring-data
java mongodb spring-data
asked Nov 28 '18 at 0:21
Jeep87cJeep87c
369522
369522
add a comment |
add a comment |
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