Hi,

we have an existing java application which is persisting data to a oracle database using jdbc. I am working on converting the application to use hibernate. application has class structure similar to sample below

class A {
private String id;
private int version;
private String dataA1;
private D d;
.....
}

class B {
private String dataB1;
.......
}

class C extends B {
private String dataC1;
.......
}

class D extends C {
private String dataD1;
private String dataD2;
private String dataD3;
........
}


This has to be mapped to existing tables below

TABLE_A
id (from Class A)
version (from Class A)
dataA1 (from Class A)
dataB1 (from Class B)
dataC1 (from Class C)

TABLE_B
id (from Class A )
version (from Class A )
dataD1 (from Class D)
dataD2 (from Class D)
dataD3 (from Class D)

Table_B and TABLE_B has primary key as version,id. It is difficult
to get data model changed now. Is it possible to map this structure using Hibernate? We are using Hibernate version 3.3.

Thanks in Advance

It is possible in Hibernate. You can get more idea for this at http://www.hibernate.org/hib_docs/v3/re ... rwork.html