java ComboBoxViewerCellEditor在对象列表中显示字符串

Question

问题陈述：获取在另一个类中声明为集合的类的getter和setter

数据模型

Public Class Person{
 String firstName;
 String lastName;
 Collection<Address> allAddresses = new ArrayList<Address>();
 getFirstName(){..}
 getLastName{..}
 getContacts{....}
}

Public Class Address{
 String Street;
 String City;
 getCity(){..};
 getStreet(){..};
}

TableViewer内容

personTableViewer.setInput(//lsit of Persons from Database)
columViewer.setLabelProvider{...
...
}
DropDownInTable dot = new DropDownInTable(valcol.getViewer());
columnViewe.setEditingSupport(dot)

DropDownClass

private ComboBoxViewerCellEditor cellEditor=null;
potected CellEditor getCellEditor(Object element) {
  //element here is person Object.I need setINput as getAddress().getCity()
  //if there was way to make element as address Object It would be great
    cellEditor.setInput(element.getAddress)
    return cellEditor;
}

若有办法强制元素成为地址对象或检索地址，那个就太好了，任何建议都值得赞赏

Answer 1

使用setLabelProvider调用设置标签提供程序，该提供程序获取集合中每个对象的字符串。标签提供程序类似于：

class CollectionLabelProvider extends LabelProvider
{
  @Override
  public String getText(Object element)
  {
    // 'element' is an object from the collection

    CollectionEntry entry = (CollectionEntry)element;

    return entry.getString();
  }
}

将“CollectionEntry”替换为集合中的类