问题
I'm using eclipselink in my web application (i use vaadin with oracle as DATABASE) but i'm facing a problem with the Id values.
I have this simple schema :
encaiss (@MappedSuperclass contains just Id)
|
|
Encaissement (it extends encaiss so as to have the ID)
/ \
/ \
Encaissement_Technique (extends Encaissement) Encaissement_espece
/ \
/ \
Encaissement_Cheque Encaissement_Virement (both extend Encaissement_Technique to have the ID)
When i create an instance of Encaissement_virement for example, the Id generated is random eventhough i set allocationSize = 1, initialValue = 1.
Those are the entities :
====================Entity encaiss (contains just the ID)==============
@MappedSuperclass
public abstract class encaiss {
@Id
@GeneratedValue(strategy=GenerationType.AUTO, generator="encaiss_seq_gen")
@SequenceGenerator(name="encaiss_seq_gen", sequenceName="ENCAISSEMENT_SEQ", allocationSize = 1, initialValue = 1)
protected long id_encaissement;
public long getId_encaissement() {
return id_encaissement;
}
public void setId_encaissement(long id_encaissement) {
this.id_encaissement = id_encaissement;
}
}
============================entity Encaissement=======================
@Entity
@Inheritance(strategy=InheritanceType.JOINED)
@DiscriminatorColumn(name="ENCAISS_TYPE")
@Table(name="ENCAISSEMENT")
public class Encaissement extends encaiss implements Serializable{
@Column(name="LIBELLE")
protected String libelle;
@Column(name="PIECE_JOINTE")
protected String piece_jointe;
@Temporal(TemporalType.DATE)
@Column(name="DATE_ENCAISSEMENT")
protected Date date_encaissement;
@Embedded
protected Avis_Recette avis_recette;
public Encaissement(String libelle, String piece_jointe, Date date_encaissement){
this.libelle=libelle;
this.piece_jointe=piece_jointe;
this.date_encaissement=date_encaissement;
}
public Encaissement(){
}
}
====================entity Encaissement_Technique======================
@Entity
@DiscriminatorValue("Technique")
@Inheritance(strategy=InheritanceType.JOINED)
@DiscriminatorColumn(name="ENCAISS_TECHNIQUE_TYPE")
@Table(name="ENCAISSEMENT_TECHNIQUE")
public class Encaissement_Technique extends Encaissement implements Serializable{
public Encaissement_Technique(){
}
}
====================entity Encaissement_Cheque========================
@Entity
@DiscriminatorValue("C")
@Table(name="ENCAISSEMENT_CHEQUE")
public class Encaissement_Cheque extends Encaissement_Technique{
@Column(name="ETAT_AVISCREDIT")
private String etat_avisCredit;
@Embedded
private Cheque cheque;
public Encaissement_Cheque(String etat_avisCredit, Date date_encaissement){
this.etat_avisCredit=etat_avisCredit;
this.date_encaissement=date_encaissement;
}
public Encaissement_Cheque(){
}
}
====================entity Encaissement_Virement=======================
@Entity
@DiscriminatorValue("V")
@Table(name="ENCAISSEMENT_VIREMENT")
public class Encaissement_Virement extends Encaissement_Technique{
@Temporal(TemporalType.DATE)
@Column(name="DATE_VIREMENT")
private Date date_virement;
public Encaissement_Virement(Date date_virement, String libelle, String piece_jointe, Float primCoass, Date date_encaissement){
this.date_virement=date_virement;
this.primeCoass=primCoass;
this.piece_jointe=piece_jointe;
this.libelle=libelle;
this.date_encaissement=date_encaissement;
}
public Encaissement_Virement(){
}
}
I created from eclipse an instance of Encaissement_virement, the generated id is 71 then when i create another it gives it 75, after that it jumps to 91 !!! then it's adding 3 after each insertion (i mean id=103 then 106 then 109) !!!!!
PS : When i excute
Encaissement_virement ev=new Encaissement_virement();
//ev.getters and setters
ev.getId_Encaissement(); doesn't return the real Id instead it returns 0 whether it is called before or after the commit.
This problem is driving me crazy and i can't figure out the problem. (i think that the inheritance id or the id type (which is long) are not working).
I would appreciate your help. Thanks.
Edit :
After using sql developer i'm convinced that the problem is in the inheritance.
This is what i get when i try to insert an Encaissement_virement (which is logical because it extends another entity) :
Can anyone help me fix the inheritance problem in jpa eclipselikn. Thanks again.
Edit2
I create a new instance of Encaissement_virement using this code :
JPAContainer<Encaissement_Espece> ee=JPAContainerFactory.make(Encaissement_Espece.class, PERSISTANCE_UNIT);
Encaissement_Espece encaissEspece;
JPAContainer<Encaissement_Cheque> ec=JPAContainerFactory.make(Encaissement_Cheque.class, PERSISTANCE_UNIT);
Encaissement_Cheque encaissCheque;
JPAContainer<Encaissement_Virement> ev=JPAContainerFactory.make(Encaissement_Virement.class, PERSISTANCE_UNIT);
Encaissement_Virement encaissVirement;
//Some code here.
switch (typeEncaissement) {
case 0:
encaissEspece=new Encaissement_Espece();
encaissEspece.setCaisse(caisseEnc);
encaissEspece.setDate_encaissement(dateEnc);
encaissEspece.setLibelle(libelleEnc);
encaissEspece.setMontant(montantEncEspece);
encaissEspece.setPiece_jointe(pieceJointesEnc);
encaissEspece.setClient(clientEnc);
//UUID uuid = (UUID)ee.addEntity(encaissEspece);
//EntityItem<Encaissement_Espece> eeEntityItem = ee.getItem(uuid);
IdEnc=(Long)ee.addEntity(encaissEspece);
ee.commit();
break;
case 1:
encaissCheque=new Encaissement_Cheque();
encaissCheque.setBanque(banqueEnc);
encaissCheque.setCheque(chequeEnc);
encaissCheque.setClient(clientEnc);
encaissCheque.setDate_encaissement(dateEnc);
encaissCheque.setLibelle(libelleEnc);
encaissCheque.setPiece_jointe(pieceJointesEnc);
encaissCheque.setPrimeCoass(primeCoassEnc);
IdEnc=(Long)ec.addEntity(encaissCheque);
ec.commit();
break;
case 2:
encaissVirement=new Encaissement_Virement();
encaissVirement.setBanque(banqueEnc);
encaissVirement.setClient(clientEnc);
encaissVirement.setDate_encaissement(dateEnc);
encaissVirement.setLibelle(libelleEnc);
encaissVirement.setPiece_jointe(pieceJointesEnc);
encaissVirement.setPrimeCoass(primeCoassEnc);
encaissVirement.setDate_virement(dateVir);
IdEnc=(Long)ev.addEntity(encaissVirement);
ev.commit();
break;
default:
break;
this is the result (a new anstance with 66 as id) : [EL Fine]: sql: 2015-04-01 17:25:45.301--ServerSession(5981709)--Connection(27335918)--Thread(Thread[http-bio-8080-exec-5,5,main])--SELECT ENCAISSEMENT_SEQ.NEXTVAL FROM DUAL
[EL Fine]: sql: 2015-04-01 17:25:45.316--ClientSession(26722029)--Connection(27335918)--Thread(Thread[http-bio-8080-exec-5,5,main])--INSERT INTO ENCAISSEMENT (ID_ENCAISSEMENT, DATE_ENCAISSEMENT, LIBELLE, PIECE_JOINTE, AGENCE, DATE_AVIS_RECETTE, ENDROIT, PROVENANCE, UNITE, ID_CLIENT, ENCAISS_TYPE) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) bind => [66, 2015-04-01, titre, jointes, null, null, null, null, null, 2, V]
[EL Fine]: sql: 2015-04-01 17:25:45.795--ClientSession(26722029)--Connection(27335918)--Thread(Thread[http-bio-8080-exec-5,5,main])--INSERT INTO ENCAISSEMENT_TECHNIQUE (PRIMECOASS, ID_BANQUE, ID_ENCAISSEMENT) VALUES (?, ?, ?) bind => [123.0, 1, 66]
[EL Fine]: sql: 2015-04-01 17:25:45.936--ClientSession(26722029)--Connection(27335918)--Thread(Thread[http-bio-8080-exec-5,5,main])--INSERT INTO ENCAISSEMENT_VIREMENT (DATE_VIREMENT, ID_ENCAISSEMENT) VALUES (?, ?) bind => [2015-04-01, 66]
Then i drop this row and create another instance with the same code, and i get :
[EL Fine]: sql: 2015-04-01 17:30:42.119--ServerSession(27444543)--Connection(6011948)--Thread(Thread[http-bio-8080-exec-15,5,main])--SELECT ENCAISSEMENT_SEQ.NEXTVAL FROM DUAL
[EL Fine]: sql: 2015-04-01 17:30:42.13--ClientSession(1011455)--Connection(6011948)--Thread(Thread[http-bio-8080-exec-15,5,main])--INSERT INTO ENCAISSEMENT (ID_ENCAISSEMENT, DATE_ENCAISSEMENT, LIBELLE, PIECE_JOINTE, AGENCE, DATE_AVIS_RECETTE, ENDROIT, PROVENANCE, UNITE, ID_CLIENT, ENCAISS_TYPE) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) bind => [69, 2015-04-01, titre, j, null, null, null, null, null, 4, V]
[EL Fine]: sql: 2015-04-01 17:30:42.195--ClientSession(1011455)--Connection(6011948)--Thread(Thread[http-bio-8080-exec-15,5,main])--INSERT INTO ENCAISSEMENT_TECHNIQUE (PRIMECOASS, ID_BANQUE, ID_ENCAISSEMENT) VALUES (?, ?, ?) bind => [123.0, 1, 69]
[EL Fine]: sql: 2015-04-01 17:30:42.211--ClientSession(1011455)--Connection(6011948)--Thread(Thread[http-bio-8080-exec-15,5,main])--INSERT INTO ENCAISSEMENT_VIREMENT (DATE_VIREMENT, ID_ENCAISSEMENT) VALUES (?, ?) bind => [2015-04-01, 69]
You can notice that instead of getting 67 as Id i get 69 ??
来源：https://stackoverflow.com/questions/29372233/id-generator-in-jpa-eclipselink-inheritance-return-random-values