[bugfix] assert for null dbName for specialed period

atms-api/src/main/java/pwc/taxtech/atms/common/util/MyAsserts.java

@@ -27,6 +27,10 @@ public class MyAsserts {
         if (obj == null || obj.isEmpty()) throw exception;
     }
 
+    public static void assertNotEmpty(String obj, FormulaException exception) {
+        if (obj == null || obj.isEmpty()) throw exception;
+    }
+
     public static void assertNotEmpty(Collection obj, ApiException exception) {
         if (obj == null || obj.isEmpty()) throw exception;
     }

atms-api/src/main/java/pwc/taxtech/atms/exception/Exceptions.java

@@ -5,4 +5,5 @@ public class Exceptions {
    public static final FormulaException BB_REPORT_NULL = new FormulaException("cell report is null");
    public static final FormulaException BB_CELL_DATA_NULL = new FormulaException("cell data is null");
    public static final FormulaException BB_CELL_DATA_EMPTY = new FormulaException("cell data is empty");
+   public static final FormulaException BB_EMPTY = new FormulaException("db name is empty");
  }

atms-api/src/main/java/pwc/taxtech/atms/vat/service/impl/report/functions/BB.java

@@ -84,6 +84,7 @@ public class BB extends FunctionBase implements FreeRefFunction {
             String dbName = agent.getPastProjectDbName(curPeriod.getCurYear(),
                     formulaContext.getOrganizationID());
 
+            MyAsserts.assertNotEmpty(dbName, Exceptions.BB_EMPTY);
             String currentProjectDb = ShardingContextHolder.getDataSourceKey();
             CellData cellData = null;
             if (currentProjectDb.equals(dbName)) {