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Hi there,

I trying to use an annotatoin field @version but when updating the record i
don't see any version in the database.

Also,
Element class:

package entities;

import java.io.Serializable;
import java.util.Set;

import javax.annotation.Generated;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Version;

import org.apache.openjpa.persistence.jdbc.ForeignKey;

/**
 * @author Ken
 */
@Entity
@NamedQueries({
    @NamedQuery(name="roots.Element", 
        query="Select e From Element e" +
              " where e.parentElement is null"),
    @NamedQuery(name="one.Element",
        query="Select e From Element e" +
              " where e.dbID = :id")
})
@Table(name="Element")
public class Element implements ElementInterface, Serializable {

  private static final long serialVersionUID = 4627343050926103812L;

  private String dbID;
  private String internID;
  private String name;
  private String description;
  private long   version;
  
  private Set<Property>        properties;
  private Element              parentElement;
  private Set<Element> childElements;
  
  /**
   * This is the default constructor.
   */
  public Element() {
  }

  /**
   * @see entities.ElementInterface#setDbID(java.lang.String)
   */
  public void setDbID(String dbID) {
    this.dbID = dbID;
  }
  
  /**
   * @see entities.ElementInterface#getDbID()
   */
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO, generator="uuid-hex")
  public String getDbID() {
    return this.dbID;
  }

  /**
   * @see entities.ElementInterface#setInternID(java.lang.String)
   */
  public void setInternID(String internID) {
    this.internID = internID;
  }
  
  /**
   * @see entities.ElementInterface#getInternID()
   */
  public String getInternID() {
    return this.internID;
  }


  /**
   * @see entities.ElementInterface#getName()
   */
  public String getName() {
    return this.name;
  }

  /**
   * @see entities.ElementInterface#setName(java.lang.String)
   */
  public void setName(String name) {
    this.name = name;
  }
  
  /**
   * @see entities.ElementInterface#setDescription(java.lang.String)
   */
  public void setDescription(String description) {
    this.description = description;
  }
  
  /**
   * @see entities.ElementInterface#getDescription()
   */
  public String getDescription() {
    return this.description;
  }  
  
  /**
   * @see entities.ElementInterface#setVersion(java.util.Date)
   */
  private void setVersion(int version) {
    this.version = version;
  }
  
  /**
   * @see entities.ElementInterface#getVersion()
   */
  @Version
  @GeneratedValue(strategy=GenerationType.AUTO)
  public long getVersion() {
    return this.version;
  }
  
  /**
   * Set the element properties.
   * 
   * @param Set<Property> properties
   */
  public void setProperties(Set<Property> properties) {
    this.properties = properties;
  }
  
  /**
   * Get the element properties.
   * 
   * @return Set<Property>
   */
  @OneToMany(cascade=CascadeType.ALL, fetch=FetchType.EAGER,
mappedBy="element")
  public Set<Property> getProperties() {
    return properties;
  }
  
  /**
   * Set the element parent.
   * 
   * @param Element parentElement
   */
  public void setParentElement(Element parentElement) {
    this.parentElement = parentElement;
  }
  
  /**
   * Get the element parent.
   * 
   * @return Element
   */
  @ManyToOne(optional=true, fetch=FetchType.LAZY)
  @ForeignKey(name="FK_parent_element")
  @JoinColumn(name="parent_element", referencedColumnName="dbID")
  public Element getParentElement() {
    return parentElement;
  }
  
  /**
   * Set the element children.
   * 
   * @param Set<Element> childElements
   */
  public void setChildElements(Set<Element> childElements) {
    this.childElements = childElements;
  }
  
  /**
   * Get the element children.
   * 
   * @return Set<Element>
   */
  @OneToMany(cascade=CascadeType.ALL, mappedBy="parentElement",
fetch=FetchType.EAGER)
  public Set<Element> getChildElements() {
    return childElements;
  }
  
}

Class Property:


package entities;

import java.io.Serializable;
import javax.persistence.*;
import org.apache.openjpa.persistence.jdbc.ForeignKey;

/**
 * @author Ken
 */
@Entity
@NamedQueries({
  @NamedQuery(name="all.properties",
      query="Select p From Property p"),
  @NamedQuery(name="elementTemplate.properties",
      query="Select p From Property p" +
            " where p.elementTemplate = :owner"),
  @NamedQuery(name="one.property",
      query="Select p From Property p" +
            " where p.dbID = :id")
})
@Table(name="Property")
public class Property implements Serializable {

  private static final long serialVersionUID = -6988886476498387460L;
  
  private String          dbID;
  private String          property;
  private String          value;
  private Element         element;
  private ElementTemplate elementTemplate;

  /**
   * This is the default constructor.
   */
  public Property() {    
  }
  
  /**
   * Set the property dbID.
   * 
   * @param String dbID
   */
  public void setDbID(String dbID) {
    this.dbID = dbID;
  }
  
  /**
   * Get the property dbID.
   * 
   * @return 
   */
  @Id
  @GeneratedValue(strategy=GenerationType.AUTO, generator="uuid-hex")
  public String getDbID() {
    return this.dbID;
  }

  /**
   * Set the property property
   *  
   * @param String property
   */
  public void setProperty(String property) {
    this.property = property;
  }
  
  /**
   * Get the property property.
   * 
   * @return String
   */
  public String getProperty() {
    return property;
  }
  
  /**
   * Set the property value.
   * 
   * @param String value
   */
  public void setValue(String value) {
    this.value = value;
  } 
 
  /**
   * Get the property value.
   * 
   * @return String
   */
  public String getValue() {
    return value;
  }

  /**
   * Set property element.
   * 
   * @param Element element
   */
  public void setElement(Element element) {
    this.element = element;
  }
  
  /**
   * Get the property element.
   * 
   * @return Element
   */
  @ManyToOne(fetch=FetchType.LAZY)
  @ForeignKey(name="FK_property_element")
  @JoinColumn(name="element")
  public Element getElement() {
    return element;
  }

  /**
   * Set the property elementTemplate.
   * 
   * @param ElementTemplate elementTemplate
   */
  public void setElementTemplate(ElementTemplate elementTemplate) {
    this.elementTemplate = elementTemplate;
  }  

  /**
   * Get the property elementTemplate.
   * 
   * @return ElementTemplate
   */
  @ManyToOne(fetch=FetchType.LAZY)
  @ForeignKey(name="FK_property_elementTemplate")
  @JoinColumn(name="elementTemplate")
  public ElementTemplate getElementTemplate() {
    return elementTemplate;
  }

}

to update the element I do this:
Element element = em.find(Element.class, elementID);

//Add changements to the element


// update the element.
 em.persist(element);

The update worked but I don't see any version number in my database field.

Please help :)


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