[مخالف - عنوان غير مناسب :]طلب مساعدة

hello! i like to join many of ejb entities to obtain my request with EJBQL but i'm using jdeveloper !!! and i dont knew how to write a request who return a result from two or three entity bean:

import java.io.Serializable;

import java.util.List;

import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.Id;

import javax.persistence.JoinColumn;

import javax.persistence.ManyToOne;

import javax.persistence.NamedQueries;

import javax.persistence.NamedQuery;

import javax.persistence.OneToMany;

//SELECT photo.identification , retouche.contraste FROM Photo AS photo JOIN photo.retouche AS retouche

@Entity

@NamedQuery(name = "Ligne.findAll", query = "select o from Ligne o"),

public class Ligne implements Serializable {

@Column(name="DAT_CR", nullable = false)

private String datCr;

@Id

@Column(nullable = false)

private String nligne;

@Column(nullable = false)

private String type;

@OneToMany(mappedBy = "ligne")

private List<Adsl> adslList;

@ManyToOne

@JoinColumn(name = "NCOMPTE", referencedColumnName = "NCOMPTE")

private Client client;

public Ligne() {

}

public String getDatCr() {

return datCr;

}

public void setDatCr(String datCr) {

this.datCr = datCr;

}

public String getNligne() {

return nligne;

}

public void setNligne(String nligne) {

this.nligne = nligne;

}

public String getType() {

return type;

}

public void setType(String type) {

this.type = type;

}

public List<Adsl> getAdslList() {

return adslList;

}

public void setAdslList(List<Adsl> adslList) {

this.adslList = adslList;

}

public Adsl addAdsl(Adsl adsl) {

getAdslList().add(adsl);

adsl.setLigne(this);

return adsl;

}

public Adsl removeAdsl(Adsl adsl) {

getAdslList().remove(adsl);

adsl.setLigne(null);

return adsl;

}

public Client getClient() {

return client;

}

public void setClient(Client client) {

this.client = client;

}

}