EJBQL Exception

Question

Hi,
I'm a Java Persistence newbie having a massive problem spotting the error that is triggering an Unknown state or association field exception.
I have created a Persistence Entity based on the PetStore 2.0 Reference App with the following excerpted code, plus the necessary get/set methods:
@Entity
public class Seller implements java.io.Serializable {
private String sellerID;
private String selcatID;
private String name;
public Seller() { }
public Seller(String sellerID, String selcatID, String name)
this.sellerID = sellerID;
this.selcatID = selcatID;
this.name = name;
In another Java file, I have a method that references the selcatID attribute of the Seller entity:
@SuppressWarnings("unchecked")
public List<Seller> getSellersBySelCatVLH(String selCatID, int start,
int chunkSize){
EntityManager em = emf.createEntityManager();
Query query = em.createQuery("SELECT s FROM Seller s, SelCat t WHERE " +
"s.selcatID = t.selcatID AND t.selcatID = :selcatID AND s.disabled = 0" +
" ORDER BY s.name");
List<Seller> sellers = query.setParameter("selcatID",selCatID).setFirstResult(start).setMaxResults(chunkSize).getResultList();
em.close();
return sellers;
Note that the case usage in the selcatID call in the method matches the case used in the Entity definition code. Yet I continue to get this exception:
Exception [TOPLINK-8030] (Oracle TopLink Essentials - 2006.8 (Build 060830)): oracle.toplink.essentials.exceptions.EJBQLException
Exception Description: Unknown state or association field [selcatID] of class [...Seller].
I have been through the server log stack trace and confirmed that this is the only method cited in the trace that references this attribute.
Can anyone spot what I am missing?
Thanks in advance for any guidance.

Answer 1

Hi Doug,
I meet the same exception on my project, but not know where my problem lies. Please help. Thank you.
Exception Description: Unknown state or association field [projectNoSub] of class [database.SfcWip].
@Entity
@Table(name = "SFC_WIP")
@NamedQueries( {
@NamedQuery(name = "SfcWip.findByProjectNoSub", query = "SELECT s FROM SfcWip s WHERE s.sfcWipPK.projectNoSub = :projectNoSub"),
@NamedQuery(name = "SfcWip.findByPcbPartNo", query = "SELECT s FROM SfcWip s WHERE s.sfcWipPK.pcbPartNo = :pcbPartNo"),
@NamedQuery(name = "SfcWip.findByPcbQty", query = "SELECT s FROM SfcWip s WHERE s.pcbQty = :pcbQty"),
@NamedQuery(name = "SfcWip.findByFlowId", query = "SELECT s FROM SfcWip s WHERE s.flowId = :flowId"),
@NamedQuery(name = "SfcWip.findByStatus", query = "SELECT s FROM SfcWip s WHERE s.status = :status"),
@NamedQuery(name = "SfcWip.findByRemarks", query = "SELECT s FROM SfcWip s WHERE s.remarks = :remarks")
public class SfcWip implements Serializable {
* EmbeddedId primary key field
@EmbeddedId
protected SfcWipPK sfcWipPK;
@Column(name = "PCB_QTY")
private BigDecimal pcbQty;
@Column(name = "FLOW_ID")
private String flowId;
@Column(name = "STATUS")
private String status;
@Column(name = "REMARKS")
private String remarks;
@OneToMany(cascade = CascadeType.ALL, mappedBy = "sfcWip")
private Collection<SfcWiptran> sfcWiptranCollection;
/** Creates a new instance of SfcWip */
public SfcWip() {
public SfcWip(SfcWipPK sfcWipPK) {
this.sfcWipPK = sfcWipPK;
public SfcWip(String pcbPartNo, String projectNoSub) {
this.sfcWipPK = new SfcWipPK(pcbPartNo, projectNoSub);
public SfcWipPK getSfcWipPK() {
return this.sfcWipPK;
public void setSfcWipPK(SfcWipPK sfcWipPK) {
this.sfcWipPK = sfcWipPK;
public BigDecimal getPcbQty() {
return this.pcbQty;
public void setPcbQty(BigDecimal pcbQty) {
this.pcbQty = pcbQty;
public String getFlowId() {
return this.flowId;
public void setFlowId(String flowId) {
this.flowId = flowId;
public String getStatus() {
return this.status;
public void setStatus(String status) {
this.status = status;
public String getRemarks() {
return this.remarks;
public void setRemarks(String remarks) {
this.remarks = remarks;
public Collection<SfcWiptran> getSfcWiptranCollection() {
return this.sfcWiptranCollection;
public void setSfcWiptranCollection(Collection<SfcWiptran> sfcWiptranCollection) {
this.sfcWiptranCollection = sfcWiptranCollection;
@Override
public int hashCode() {
int hash = 0;
hash += (this.sfcWipPK != null ? this.sfcWipPK.hashCode() : 0);
return hash;
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof SfcWip)) {
return false;
SfcWip other = (SfcWip)object;
if (this.sfcWipPK != other.sfcWipPK && (this.sfcWipPK == null || !this.sfcWipPK.equals(other.sfcWipPK))) return false;
return true;
@Override
public String toString() {
return "database.SfcWip[sfcWipPK=" + sfcWipPK + "]";
@Embeddable
public class SfcWipPK implements Serializable {
@Column(name = "PROJECT_NO_SUB", nullable = false)
private String projectNoSub;
@Column(name = "PCB_PART_NO", nullable = false)
private String pcbPartNo;
/** Creates a new instance of SfcWipPK */
public SfcWipPK() {
public SfcWipPK(String pcbPartNo, String projectNoSub) {
this.pcbPartNo = pcbPartNo;
this.projectNoSub = projectNoSub;
public String getProjectNoSub() {
return this.projectNoSub;
public void setProjectNoSub(String projectNoSub) {
this.projectNoSub = projectNoSub;
public String getPcbPartNo() {
return this.pcbPartNo;
public void setPcbPartNo(String pcbPartNo) {
this.pcbPartNo = pcbPartNo;
@Override
public int hashCode() {
int hash = 0;
hash += (this.pcbPartNo != null ? this.pcbPartNo.hashCode() : 0);
hash += (this.projectNoSub != null ? this.projectNoSub.hashCode() : 0);
return hash;
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof SfcWipPK)) {
return false;
SfcWipPK other = (SfcWipPK)object;
if (this.pcbPartNo != other.pcbPartNo && (this.pcbPartNo == null || !this.pcbPartNo.equals(other.pcbPartNo))) return false;
if (this.projectNoSub != other.projectNoSub && (this.projectNoSub == null || !this.projectNoSub.equals(other.projectNoSub))) return false;
return true;
@Override
public String toString() {
return "database.SfcWipPK[pcbPartNo=" + pcbPartNo + ", projectNoSub=" + projectNoSub + "]";
}