Re: AssertionFailure null id in entry

Stefanie Ertheld <>
Wed, 23 Jan 2008 09:23:25 -0800 (PST)
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 DomainRegistration implements Serializable{

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

    @Id (generate=GeneratorType.AUTO)
    public Integer getId() {

    public void setId(Integer 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,


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