annotation to filter results of a @OneToMany association

Question

I have parent/child relationship between two tables, and the corresponding mapping in my Java classes. The tables roughly look like that:

A (ref number, stuf         


        

Answer 1

If I am understanding the question right, there is a way to do this with javax.persistence annotations (I used this on a ManyToOne myself, and tailored the answer from here):

@JoinColumns({
    @JoinColumn(name = "A_REF", referencedColumnName = "REF"),
    @JoinColumn(name = "B_TABLE_NAME.OTHER", referencedColumnName = "'123'")})
@OneToMany
private Set bs;

Note the single quotes in the referencedColumnName, this is the value you are looking for.

More information here.