如下代码是单据转换插件中的

 for (ExtendedDataEntity entry : extendedDataEntities) {
            DynamicObject bill = entry.getDataEntity();
            //目标单数据
            DynamicObjectCollection recordchange = bill.getDynamicObjectCollection("yfsw_method_relation1");
            // 源单数据
            List<DynamicObject> convertSource = (List<DynamicObject>) entry.getValue("ConvertSource");
            for (DynamicObject dynamicObject : convertSource) {
                // 获取源单id，通过源单id获取源单的信息
                long sourceId = dynamicObject.getLong("id");
                DynamicObject yuandan = BusinessDataServiceHelper.loadSingle(sourceId, "yfsw_dcxys_change_record");
                DynamicObjectCollection dcxy_recordchange = yuandan.getDynamicObjectCollection("yfsw_method_relation");
                bill.set("yfsw_mothername", yuandan.get("yfsw_mo"));
                bill.set("yfsw_fathername", yuandan.get("yfsw_fa"));
                bill.set("yfsw_agreementid", yuandan.get("yfsw_textfield"));
                for(DynamicObject dcxy : dcxy_recordchange){
                    DynamicObject recordchange_newcol = recordchange.addNew();
                    recordchange_newcol.set("yfsw_before_type", dcxy.get("yfsw_before_type"));
                    recordchange_newcol.set("yfsw_beforemethod", dcxy.get("yfsw_beforemethod"));
                    recordchange_newcol.set("yfsw_perferamt", dcxy.get("yfsw_perferamt"));
                    recordchange_newcol.set("yfsw_actualamt", dcxy.get("yfsw_actualamt"));
                    recordchange_newcol.set("yfsw_after_type", dcxy.get("yfsw_after_type"));
                    recordchange_newcol.set("yfsw_aftermethod", dcxy.get("yfsw_aftermethod"));
                    recordchange_newcol.set("yfsw_afterpreferamt", dcxy.get("yfsw_afterpreferamt"));
                    recordchange_newcol.set("yfsw_amountfield", dcxy.get("yfsw_amountfield"));
                    recordchange_newcol.set("yfsw_afteractulamt", dcxy.get("yfsw_afteractulamt"));
                    DynamicObject objet = recordchange_newcol.getDynamicObject("yfsw_beforemethod");
                    DynamicObject object1 = recordchange_newcol.getDynamicObject("yfsw_aftermethod");
                    String way = objet.getString("yfsw_combofield");
                    String way1 = object1.getString("yfsw_combofield");
                    if (way.equals("0")) {way = "趸交";}if (way.equals("1")) {way = "分次交";}if (way.equals("2")) {way = "分年交";}if (way.equals("3")) {way = "免费";} if (way.equals("4")){ way = "特殊";}
                    if (way1.equals("0")) {way1 = "趸交";}if (way1.equals("1")) {way1 = "分次交";}if (way1.equals("2")) {way1 = "分年交";}if (way1.equals("3")) {way1 = "免费";} if (way1.equals("4")){ way1 = "特殊";}
                    recordchange_newcol.set("yfsw_beforepaytype", way);
                    recordchange_newcol.set("yfsw_afterpaytype", way1);
                    BigDecimal temp = new BigDecimal("0");
                    temp = recordchange_newcol.getBigDecimal("yfsw_afteractulamt").subtract(recordchange_newcol.getBigDecimal("yfsw_actualamt"));
                    all = all.add(temp);
                }
            }