Re: AssertionFailure null id in entry

Ok, shortened, this is what my mapping class looks like:

@Entity (access=AccessType.PROPERTY)
@Table(name= "MYTABLE", catalog= "MYCATALOG",
        uniqueConstraints=
{...@javax.persistence.UniqueConstraint(columnNames=
{"MYROW1", "MYROW2", "MYROW3"})}
)
public class MYOBJECT implements Serializable{

    private Integer id;
    private String MYROW1;
    private String MYROW2;
    private String MYROW3;

    @Id (generate=GeneratorType.AUTO)
    public Integer getId() {
        return this.id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getMYROW1() {
        return this.MYROW1;
    }

    @Column (insertable=true, updatable=true, name="MYROW1")
    public void setMYROW1(String MYROW1) {
        this.MYROW1 = MYROW1;
    }

    public String getMYROW2() {
        return this.MYROW2;
    }

    @Column (insertable=true, updatable=true, name="MYROW2")
    public void setMYROW2(String MYROW2) {
        this.MYROW2 = MYROW2;
    }

    public String getMYROW3() {
        return this.MYROW3;
    }

    @Column (insertable=true, updatable=true, name="MYROW3")
    public void setMYROW3(String MYROW3) {
        this.MYROW3 = MYROW3;
    }

                public boolean equals(Object o) {
                        if (this == o) return true;
                        return false;
                }

                public int hashCode(){
                        return -1;

                }

                public String toString(){
                        return "";
        }

}

However, as stated before, when I have a duplicate unique key, it
throws the weird error ("dont flush the session...") I stated above.
Now deleted the id autoincrement field from my mapping class and used
the unique key as a primary key, so I used an aditional mapping class
just for this unique key - hmmmm makes me thinking - maybe the problem
was that you ALWAYS need a separate mapping class for key - be it a
primary, foreign or unique key - could this be the reason?!

Thanks in advance,

Stefanie