订单修改数量控制，修改数量必须小于原订单数量

src/apps/saorderdetail/saorderdetail.java

@@ -99,7 +99,7 @@ public class saorderdetail extends PaoCust {
                             setFieldFlag(new String[]{"fprice", "famount", "frateprice", "frateamount"}, REQUIRED, true);
                         }
                         if ("提交".equals(fstatus)) {
-                            setFieldFlag(new String[]{"fplandate","fnotes"}, READONLY, false);
+                            setFieldFlag(new String[]{"fplandate", "fnotes"}, READONLY, false);
                         }
                         if ("审核".equals(fstatus) || "关闭".equals(fstatus)) {
                             double frateprice = getDouble("frateprice");//订单单价
@@ -306,8 +306,12 @@ public class saorderdetail extends PaoCust {
         if ("FCHANGEQTY".equals(fieldname)) {
             double fundeliqty = getDouble("fundeliqty");
             double fqty = getDouble("fqty");
+            double foldqty = getPaoField("fqty").getPreviousValue().asDouble();
+            if (fqty >= foldqty) {
+                throw new P2AppException("", "修改数量必须小于原订单数量" + Math.sub(fqty, fundeliqty));
+            }
             if (getDouble(fieldname) < Math.sub(fqty, fundeliqty)) {
-                throw new P2AppException("", "数量不可小于已发货数量" + Math.sub(fqty, fundeliqty));
+                throw new P2AppException("", "修改数量必须大于等于已发货数量" + Math.sub(fqty, fundeliqty));
             }
             if (getDouble(fieldname) < 0) {
                 throw new P2AppException("", "修改数量不可小于0");