how to convert mysql query to JPQL

Question

How to convert MYSQL Query to JPQL Query? Instead of converting is it possible to use same query to update entity in Java swing Program?

mysql query select * from project.newproject; update newproject set pedate = date_add(psdate, interval duration day) select * from project.newproject; update newproject set pedate = date_add(psdate, interval duration day)

My Entity class is showing below

@Entity
@Table(name = "newproject")
@XmlRootElement

@Transient
 private PropertyChangeSupport changeSupport = new PropertyChangeSupport(this);

    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @Column(name = "pid")
    private Integer pid;
    @Basic(optional = false)
    @Column(name = "pname")
    private String pname;
    @Basic(optional = false)
    @Column(name = "psdate")
    @Temporal(TemporalType.DATE)
    private Date psdate;
    @Basic(optional = false)
    @Column(name = "duration")
    private int duration;
    @Column(name = "pedate")
    @Temporal(TemporalType.DATE)
    private Date pedate;

Answer 1

I changed MYSQL Query as below to update selected row

`update newproject 
set pedate = date_add(psdate, interval duration day)
where pid = newproject.pid;`

and used createnativeQuery in Java to update selected row

Newproject_1 p = ProjectPUEntityManager.find(Newproject_1.class, 1);

ProjectPUEntityManager.getTransaction().begin();
Query query = ProjectPUEntityManager.createNativeQuery("update newproject \n" +
"set pedate = date_add(psdate, interval duration day)\n" +
"where pid = newproject.pid;");
int count = query.executeUpdate();
ProjectPUEntityManager.merge(p);
ProjectPUEntityManager.getTransaction().commit();

JOptionPane.showMessageDialog(rootPane, "Update End Date");