我有两个非常相似的类(它们共享许多变量),我想将一个转换为另一个。简化如下:
class ClassForJacksonDatabind
{
public boolean a;
public int b;
/* ... */
public float z;
/* ... */
public HashMap<String,Double> different;
}
class Preferred
{
protected boolean a;
protected int b;
/* ... */
protected float z;
/* ... */
protected HashMap<Integer,Double> different;
/* getters and setters */
}
因为我想避免手动复制每一个共享变量,所以我提出了这个想法:
abstract class AbstractPreferred
{
public boolean a;
public int b;
/* ... */
public float z;
/* ... */
/* getters and setters */
}
class ClassForJacksonDatabind extends AbstractPreferred
{
public HashMap<String,Double> different;
/* getter and setter for different */
public Preferred toPreferred()
{
Preferred p = (AbstractPreferred) this;
p->convertDifferent(this.different);
return p;
}
}
class Preferred extends AbstractPreferred
{
protected HashMap<Integer,Double> different;
/* getters and setters */
public void convertDifferent(HashMap<String,Double> d)
{
/* conversion */
}
}
但显然这不起作用。它有可能吗?我的主要目标是避免做这样的事情:
public Preferred toPreferred()
{
Preferred p = new Preffered();
p.setA(this.a);
p.setB(this.b);
/* ... */
p.setZ(this.z);
p.setAa(this.aa);
/* ... */
p.setZz(this.zz);
p.convertDifferent(this.different);
}
或
public Preferred toPreferred()
{
Preferred p = new Preferred(this);
p.convertDifferent(this.different);
}
/* ... */
Preferred(AbstractPreferred other)
{
this.a = other.a;
this.b = other.b;
/* ... */
this.zz = other.zz;
}
ClassForJacksonDatabind
的结构是从外部JSON文件派生的,所以我无法改变它(据我所知,无论如何)。