Entity Bean

Nyakoi znae li kakyv tip ( razbirai class ) tryabva da mi e Primary Key obekta pri systaven Primary key v tablicata ot bazata ( systoyast se ot dve int poleta)

ima6 biinove v baza danni i iska6 da indexira6 po tqh li? /*ne mi stana syvsem qsen vyprosa? */





дао дъ дзин

primary key class-a e systaven - naprimer ako v tablicata ima6 coloni
ID - number
ISOCODE - varchar
koito sa primary key togava clasa ti triabva da e
....
public class TblPrimaryKey implements java.io.Serializable {
public int id;
public String isocode;
public TblPrimaryKey (int id, String isocode)
{
this.id=id;
this.isocode=isocode;
}

.....
setter & getter method - ako iska6 de ....
.....
}

P.S. imaj predvid 4e makar i minimalni ima razliki pri razli4nite AppServeri - osobenno akosi imat sobstveni IDE-ta.....

da tochno taka, samo che primary key mi e ot dve int poleta v tablicata .

10x ste go probvam

probvai i tova - codeto e za Weblogic 5.1
---------------
public class DvaStringaPk implements java.io.Serializable {

public String a;
public String b;

public DvaStringaPK() {}

public int hashCode() {
return a.hashCode() ^ b.hashCode();
}

public boolean equals(Object o) {

if (o == this) return true;

if (o instanceof DvaStringaPK) {
DvaStringaPK dvapk = (DvaStringaPK) o;

return dvapk.a.equals(a) && dvapk.b.equals(b);
}
}


Objects contain the possibility of all situations.