How to use spring data mongo @CompoundIndex with sub collections?

Question

Assume that I have such entities like the following:

@Document(collection = \"doc_a\")
public class A {    
  @Field(\"id\")
  private Integer id;

  @Field(         


        

Answer 1

I had the same problem, for me the Miguel's solution worked but I had to wrap the @CompoundIndex inside a @CompoundIndexes otherwise it didn't work (I'm using Spring Roo).

@CompoundIndexes({
    @CompoundIndex(name = "aid_bid_idx", def = "{'id' : 1, 'b.id' : 1}")
})
@Document(collection = "doc_a")
public class A {...}