EJBQLException, Entity Class, NetBeansv6, TopLink

Question

Hello I'm new to java and having difficulty with Persistence EntityManager, within persistence.xml I've unselected the 'Include all entity classes' and added the entity class "ImageSpec" to the list provided, and the Entity Class is on the same class path but I still have the following exception. I've researched orm.xml but that looks like it's for deployment scinario's? and not required for development? Any help would be greatly appreciated thank you.
Exception
Caused by: Exception [TOPLINK-8034] (Oracle TopLink Essentials - 2.0 (Build b58g-fcs (09/07/2007))): oracle.toplink.essentials.exceptions.EJBQLException
Exception Description: Error compiling the query [select object(o) from Images o]. Unknown abstract schema type [Images].
        at oracle.toplink.essentials.exceptions.EJBQLException.unknownAbstractSchemaType(EJBQLException.java:494)
Entity Class
package org.comp.app.ds.ajax;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import org.json.JSONArray;
@Entity
@Table(name="Images")
public class ImageSpec implements Serializable {
  private Long imgId;
  private String imgDescription;
  private Long imgFileSize;    
  private String imgFilePath;
  private String imgFileType;
  public ImageSpec() { }
  public JSONArray toJSON() {
     JSONArray thisJSON = new JSONArray();
     thisJSON.put(this.getImgId());
     thisJSON.put(this.getImgDescription());
     thisJSON.put(this.getImgFileSize());
     thisJSON.put(this.getImgFilePath());
     thisJSON.put(this.getImgFileType());
     return thisJSON;
  @Id
  public Long getImgId() {
    return imgId;
  public String getImgDescription() {
    return imgDescription;
  public Long getImgFileSize() {
    return imgFileSize;
  public String getImgFilePath() {
    return imgFilePath;
  public String getImgFileType() {
    return imgFileType;
  public void setImgId(Long imgId) {
    this.imgId = imgId;
  public void setImgDescription(String imgDescription) {
    this.imgDescription = imgDescription;
  public void setImgFileSize(Long imgFileSize) {
    this.imgFileSize = imgFileSize;
  public void setImgFilePath(String imgFilePath) {
    this.imgFilePath = imgFilePath;
  public void setImgFileType(String imgFileType) {
    this.imgFileType = imgFileType;
persistence.xml
<persistence-unit name="AppPU" transaction-type="JTA">
    <provider>oracle.toplink.essentials.PersistenceProvider</provider>
    <jta-data-source>jdbc/appDB</jta-data-source>
    <class>org.comp.app.ds.ajax.ImageSpec</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
    </properties>
  </persistence-unit>

Answer 1

By finding a resource on EJB QL, my Query syntax was wrong. Here's an explanation for anybody with the same problem.
SQL Query Example
SELECT * FROM TableName
EJB QL Example
SELECT OBJECT(i) FROM ImageSpec i
OBJECT = * (+Select All+)
i = A made up identifying character (Rule of thumb: use the first character of Entity Class Name)
ImageSpec = The Entity Class Name (+Not the Database Column Name+)
See the link URL below for more information:
http://edocs.bea.com/workshop/docs81/doc/en/core/index.html
Edited by: Jodda on Feb 22, 2008 7:41 AM - Marked as answered.