hibernate one to many using a join table, and hibernate annotations

Question

I want do a one-to-many relationship between two tables using a join table.

This is why I want to use a join table:

• Hibernate unidirectional one to many as

Answer 1

Don't look for examples. Read the official documentation:

@Entity
public class Product {

    private String serialNumber;
    private Set<Part> parts = new HashSet<Part>();

    @Id
    public String getSerialNumber() { return serialNumber; }
    void setSerialNumber(String sn) { serialNumber = sn; }

    @OneToMany
    @JoinTable(
            name="PRODUCT_PARTS",
            joinColumns = @JoinColumn( name="PRODUCT_ID"),
            inverseJoinColumns = @JoinColumn( name="PART_ID")
    )
    public Set<Part> getParts() { return parts; }
    void setParts(Set parts) { this.parts = parts; }
}


@Entity
public class Part {
   ...
}

Also, note that this is the default for unidirectional one-to-many associations. So you don't even have to provide the @JoinTable annotation if the default table and column names suit you.