GWT编辑器框架ListEditor

首先。我的行为是这样，我会忽略代码，试图更好地解释：

public class ProgramaEditor extends Composite implements Editor<ProgramaProxy> { 
    /*edits a ProgramaProxy just fine*/   
    /* a EditorList to edit BitacoraProxy */ 
    @UiField BitacoraListEditor bitacoras; 

} 

    public class BitacoraListEditor extends Composite implements IsEditor<ListEditor<BitacoraProxy, BitacoraEditor>>, HasRequestContext<List<BitacoraProxy>>{ 
/* edit a list of BitacoraProxy just fine */ 
protected class BitacoraEditorSource extends EditorSource<BitacoraEditor>{ 
     /* the editor source that vends Editors of BitacoraProxy*/ 
     public BitacoraEditor create(int index) { 
       final BitacoraEditor editor = new BitacoraEditor(); 
         editor.setIndex(index); 

       /*more code*/ 

         editor.addDeleteEditorHanlder(new EditorDeleteHandler() { 
         /* ... handler to remove a Editor from the list */ 
         subeditors.getList().remove(event.getIndex()); 
         } 
     } 
    } 

private ListEditor<BitacoraProxy, BitacoraEditor> subeditors = ListEditor.of(new BitacoraEditorSource()); 
}

在服务器端：

@Entity 
public class Bitacora extends EntityBase { 
    @NotNull(message="La fecha no puede ser nulo") 
    private Date fecha;  
}

所以一切运作良好的正常工作流程编辑ProgramaProxy再加入BitacoraProxys和然后保存，我可以使用ListEditor保存ProgramaProxy和它的@OneToMany BitacoraProxy。

问题是，当我从EditorList与删除BitacoraProxy：

subeditors.getList().remove(event.getIndex()); 
    /*Please note the @NotNull on the Many side on the property fecha.*/

当我保存整个对象，我得到constrait侵犯财产：

@NotNull(message="La fecha no puede ser nulo") 
    private Date fecha;

为什么？我只是debugued我的代码和ListEditor其同步我的意思是：

Add a BitacoraProxy -> ListEditor.getList() - size = 1 
Then I remove a BitacoraProxy from the ListEditor.getList() - size = 0

没有BitacoraProxy在ListEditor的GetList（），然后保存按钮：

driver.flush().fire(new Receiver<Void>() { 
      @Override 
      public void onSuccess(Void response) { 

      } 
      @Override 
      public void onConstraintViolation(Set<ConstraintViolation<?>> violations) { 
       DialogHandler handler = DialogHandler.getInstance(); 
       ErrorDialog errDlg = handler.createErrorDialog();    

       for(ConstraintViolation<?> violation:violations){ 
        errDlg.addDetail(violation.getMessage()); 
       } 
       /* more code */ 
     });

为什么我'歌厅违反约束在ListEditor.getList（）中不存在的Proxys。

任何帮助将是apreciated。

谢谢。

来源

2012-04-20 ics_mauricio