Question

I am trying to write an adapter. I have almost 50 attributes which I’m trying to adapt from one class to another.

My code looks like:

public static Type2 getType2(Type1 type1)
{
...

  if(!StringUtils.isEmpty(type1.getAttribute1()) {
     type2.setAttribute1( type1.getAttribute1() );
  }
  // and so on for all the 50 attributes
...
}

Is there a better way to write this adapter method?

Answer 1

You could use a generic way to copy attributes from one instance to antoher:

public static <T> T copy(T source, T target) throws IllegalArgumentException, IllegalAccessException {
    for ( Field f : target.getClass().getDeclaredFields() ) {
        f.setAccessible( true );
        Object o = f.get( source );
        f.set( target, o);
    }
    return target;
}