[dev] add balance import for children balance impl

atms-api/src/main/java/pwc/taxtech/atms/dto/vatdto/BalanceAccountDto.java

+package pwc.taxtech.atms.dto.vatdto;
+
+import java.math.BigDecimal;
+
+public class BalanceAccountDto {
+    public String BalanceId ;
+    public Integer PeriodId ;
+    public String AcctCode ;
+    public String CustomerCode ;
+    public BigDecimal BegDebitBal ;
+    public BigDecimal BegCreditBal ;
+    public BigDecimal BegBal ;
+    public BigDecimal EndBal ;
+    public BigDecimal EndDebitBal ;
+    public BigDecimal EndCreditBal ;
+    public BigDecimal DebitBal ;
+    public BigDecimal CreditBal ;
+    public Integer MonthId ;
+    public String ParentCode ;
+    public Integer AcctLevel ;
+    public String StdCode ;
+    public String AccountName ;
+    public Integer Direction ;
+    public Integer IsDummy ;
+
+    public String getAcctCode() {
+        return AcctCode;
+    }
+
+    public Integer getAcctLevel() {
+        return AcctLevel;
+    }
+}

atms-api/src/main/java/pwc/taxtech/atms/vat/dao/DataImportServiceMapper.java

@@ -23,4 +23,8 @@ public interface DataImportServiceMapper extends MyVatMapper {
             "        AND v.AcctCode = e.AcctCode " +
             "GROUP BY AcctCode")
     public List<DataImportServiceImpl.ImportBalanceCount> resultBalance(@Param("period") int period, @Param("code") int code);
+
+    @Select(" select max(PeriodId) from balance")
+    Integer maxBalancePeriod();
+
 }