Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
430 views
in Technique[技术] by (71.8m points)

java - Lazy mapping with hibernate tools?

I have two tables A and B in my database. I the table B I have a reference to the table A by an Integer idA. (idA is a foreign key for B) When I do reverse engineering using hibernate-tools, I generate two Java objects.

public class A{
  int id;
} 

and

public class B{
  int id;
  A a;
} 

But I want to have

public class B{
  int id;
  int idA;
}  

How can I do this?

Thanks,

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

So I found a solution: create a custom ReverseEngineeringStrategy and change the return of excludeForeignKeyAsManytoOne method to true.

public class MyReverseEngineeringStrategy extends DelegatingReverseEngineeringStrategy {

    public MyReverseEngineeringStrategy(ReverseEngineeringStrategy delegate) {
        super(delegate);
    }

    @Override
    public boolean excludeForeignKeyAsManytoOne(String keyname, TableIdentifier fromTable, List fromColumns, TableIdentifier referencedTable, List referencedColumns) {
        return true;
                }

}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...