fix formatting for Cell.NUMERIC when integer.

Author: Robin Duda

src/main/java/com/codingchili/excelastic/model/DataTypes.java

@@ -43,4 +43,16 @@ public static Object parseString(String value) {
             return value;
         }
     }
+
+    /**
+     * @param numericCellValue parameter to convert to either double or int.
+     * @return an integer or float object, depending on if the given param has decimal value > 0.
+     */
+    public static Object parseNumeric(Double numericCellValue) {
+        if (numericCellValue - numericCellValue.intValue() > 0.0f) {
+            return numericCellValue;
+        } else {
+            return numericCellValue.intValue();
+        }
+    }
 }

src/main/java/com/codingchili/excelastic/model/ExcelParser.java

@@ -244,7 +244,7 @@ private JsonObject getRow(String[] titles, Row row, boolean dryRun) {
                         if (DateUtil.isCellDateFormatted(cell)) {
                             value = cell.getDateCellValue().toInstant().toString();
                         } else {
-                            value = cell.getNumericCellValue();
+                            value = DataTypes.parseNumeric(cell.getNumericCellValue());
                         }
                         break;
                 }

src/test/java/com/codingchili/TestDataType.java

@@ -32,6 +32,16 @@ public void parseString() {
         Assert.assertEquals(TestDataType.<String>bytes("meow"), "meow");
     }
 
+    @Test
+    public void numericAsFloat() {
+        Assert.assertEquals(DataTypes.parseNumeric(3.14), 3.14d);
+    }
+
+    @Test
+    public void numericAsInt() {
+        Assert.assertEquals(DataTypes.parseNumeric(3.0), 3);
+    }
+
     @SuppressWarnings("unchecked")
     private static <T> T bytes(String string) {
         return (T) DataTypes.parseBytes(string.getBytes(StandardCharsets.UTF_8));