去掉无用返回值

designer/src/com/fr/design/report/ReportExportAttrPane.java

@@ -82,10 +82,7 @@ public class ReportExportAttrPane extends BasicPane {
         }
 
         for (AbstractExportPane exportPane : paneList) {
-            ReportExportAttr exportAttr = exportPane.update(reportExportAttr, ReportExportAttr.class);
-            if (exportAttr != null) {
-                reportExportAttr = exportAttr;
-            }
+            exportPane.update(reportExportAttr);
         }
         return reportExportAttr;
     }

designer_base/src/com/fr/design/fun/AbstractExportPane.java

@@ -9,16 +9,5 @@ public abstract class AbstractExportPane extends BasicPane {
 
     public abstract void populate(Object t);
 
-    public abstract Object update(Object t);
-
-    public <T> T update(Object t,Class<? extends T> clazz){
-        Object object = this.update(t);
-        if(object == null){
-            return null;
-        }
-        if(object.getClass().isAssignableFrom(clazz)){
-            return clazz.cast(object);
-        }
-        return null;
-    }
+    public abstract void update(Object t);
 }