Started implementing the correct dates into kwh function

src/main/java/com/application/DB/DB.java

@@ -48,9 +48,9 @@ public class DB {
     }
 
     public static void main(String[] args) throws Exception {
-        //getKwh();
+        getKwh();
         //getName();
-        getZeroPointDate();
+        //getZeroPointDate();
     }
 
 
@@ -107,21 +107,38 @@ public class DB {
      */
     public static Map<String, Number> getKwh() throws Exception {
 
+        /*
+        for (Map.Entry<String, String> entry : getZeroPointDate().entrySet()) {
+            //System.out.printf("Intid: \t%s\t\t\tOuttid: \t%s\n",entry.getKey(),entry.getValue());
+
+            // Preparing a query statement
+            final String sqlStatement = "SELECT TimeStamp, VariantValue " +
+                    "FROM sf-drying-optimization.124.int_sd_winccsensordata " +
+                    "WHERE TimeStamp BETWEEN " + entry.getKey() + " AND " + entry.getValue() +
+                    "ORDER BY TimeStamp ASC";// Preparing a query statement
+
+        }
+
+         */
+
         // Initializing the data map to store the results
         Map<String, Number> data = new HashMap<>();
 
-        // Preparing a query statement
+
+
         final String sqlStatement = "SELECT TimeStamp, VariantValue " +
                 "FROM sf-drying-optimization.124.int_sd_winccsensordata " +
                 "WHERE TimeStamp BETWEEN \"2021-01-30 08:51:03\" " +
                 "AND \"2021-02-15 11:10:09\" ORDER BY TimeStamp ASC";
 
+
+
         // Creates a job configuration
         queryJob = getJob(QueryJobConfiguration.newBuilder(sqlStatement).build());
 
         // Iterating through the results
         TableResult result = queryJob.getQueryResults();
-        System.out.println("InTidTork \t UtTidTork");
+        System.out.println("Timestamp \t KWh");
         for (FieldValueList row : result.iterateAll()) {
 
             // Kwh
@@ -136,8 +153,11 @@ public class DB {
             data.put(formatedTimeStamp, variantValue);
         }
 
-        //NavigableMap<String, Number> sortedData = new TreeMap<>(data);
-            return data;
+        for (Map.Entry<String, Number> entry : data.entrySet()) {
+            System.out.printf("Timestamp: \t%s\t\t\tKWh: \t%s\n",entry.getKey(),entry.getValue());
+        }
+
+        return data;
     }
 
     /**
@@ -183,6 +203,18 @@ public class DB {
         //return data;
     }
 
+    /**
+     * This function retrieves the intidtork and uttidtork dates from the database.
+     * This variables are not sorted and thus this function iterates through the data in order to
+     * find the last intidtork date and the corresponding uttidtork data.
+     * These values will be used to reset the kwh.
+     *
+     * A possible extention of this function could be to limit the number of dring periodes.
+     * This could be done with counting the number of entries in
+     *
+     * @return A hashmap containing the correct intidtork and outtidtork dates
+     * @throws Exception Throws exception if an error occurs
+     */
     private static Map<String, String> getZeroPointDate() throws Exception{
 
         // Initializing a date format in the data type DateTimeFormatter
@@ -232,10 +264,12 @@ public class DB {
                 formatedUtTidTork = "";
             }
 
+            // Checks if intidtork or outtidtork is empty, if so they are ignored and not added to the list
+            if (!formatedInTidTork.equals("") && !formatedUtTidTork.equals("")){
+                // Adds the data to the dates map
+                dates.put(formatedInTidTork,formatedUtTidTork);
+            }
             //System.out.printf("%s\t\t\t%s\n",formatedInTidTork,formatedUtTidTork);
-
-            // Adds the data to the dates map
-            dates.put(formatedInTidTork,formatedUtTidTork);
         }
 
         // Defining a treemap to sort through the data
@@ -265,7 +299,7 @@ public class DB {
                 // if so the current date is the last intidtork date and
                 // is the one we will use in order to reset the kwh.
                 if(next.compareTo(formatedDateNowPlus) > 0){
-                    // Storing the dates that will be used for resetting kwh's.
+                    // Storing the dates that will be used for resetting kwh.
                     sortedDates.put(inTid,utTid);
                 }
             } catch (NullPointerException e){