EJB entity relations onetomany

Using @OneToMany and @ManyToOne entity relationship might sound little difficult and confusing in the beginning but actually it is very easy. I recently used it in one of my projects and it worked great.

Here is how the code in your entities should look like...

Assuming table 1 and table 2 have one to many relationship...then...

in the table 1 entity...you have...

...
    @OneToMany(mappedBy="table2mapping")
    private Collection table2list;
   ..associated getter and setter...

in the table2 entity..you have...

@JoinColumn(name = "table2ID", referencedColumnName = "table1ID", insertable=false, updatable=false)
    @ManyToOne
    private table1 table2mapping;

@JoinColumn should be changed depending upon your requirements...
Let me know if you have any questions...