diff --git a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/PeriodDataType.java b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/PeriodDataType.java
deleted file mode 100644
index f004427..0000000
--- a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/PeriodDataType.java
+++ /dev/null
@@ -1,119 +0,0 @@
-package org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column;
-
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-
-/**
- *
- * @author "Giancarlo Panichi" g.panichi@isti.cnr.it
- *
- */
-public enum PeriodDataType {
- DAY("Day"),
- MONTH("Month"),
- QUARTER("Quarter_of_year"),
- YEAR("Year"),
- DECADE("Decade"),
- CENTURY("Century");
-
- private static Map> hierarchicalRelation = new HashMap>();
-
- static {
- hierarchicalRelation.put(DAY, Arrays.asList(MONTH, QUARTER, YEAR, DECADE, CENTURY));
- hierarchicalRelation.put(MONTH, Arrays.asList(QUARTER, YEAR, DECADE, CENTURY));
- hierarchicalRelation.put(QUARTER, Arrays.asList(YEAR, DECADE, CENTURY));
- hierarchicalRelation.put(YEAR, Arrays.asList(DECADE, CENTURY));
- hierarchicalRelation.put(DECADE, Arrays.asList(CENTURY));
- }
-
-
-
- private static final int START_YEAR = 1700;
-
- private static final int END_YEAR = 2300;
-
- /**
- * @param text
- */
- private PeriodDataType(final String id) {
- this.id = id;
- }
-
- private final String id;
-
- @Override
- public String toString() {
- return id;
- }
-
- public List getHierarchicalRelationOfPeriodDataType(PeriodDataType periodDataType){
- return hierarchicalRelation.get(periodDataType);
- }
-
- public Map> getHierarchicalRelation(){
- return hierarchicalRelation;
- }
-
- public String getPeriodDataTypeLabel() {
- switch (this) {
- case DAY:
- return "Day";
- case MONTH:
- return "Month";
- case QUARTER:
- return "Quarter of year";
- case YEAR:
- return "Year";
- case DECADE:
- return "Decade";
- case CENTURY:
- return "Century";
- default:
- return null;
- }
-
- }
-
- public static int getStartYear(){
- return START_YEAR;
- }
-
- public static int getEndYear(){
- return END_YEAR;
- }
-
-
- public static PeriodDataType getPeriodFromString(String period){
- if(period.compareToIgnoreCase(PeriodDataType.DAY.toString())==0){
- return PeriodDataType.DAY;
- } else {
- if(period.compareToIgnoreCase(PeriodDataType.MONTH.toString())==0){
- return PeriodDataType.MONTH;
- } else {
- if(period.compareToIgnoreCase(PeriodDataType.QUARTER.toString())==0){
- return PeriodDataType.QUARTER;
- } else {
- if(period.compareToIgnoreCase(PeriodDataType.YEAR.toString())==0){
- return PeriodDataType.YEAR;
- } else {
- if(period.compareToIgnoreCase(PeriodDataType.DECADE.toString())==0){
- return PeriodDataType.DECADE;
- } else {
- if(period.compareToIgnoreCase(PeriodDataType.CENTURY.toString())==0){
- return PeriodDataType.CENTURY;
- } else {
- return null;
- }
- }
- }
- }
- }
- }
- }
-
-
-}
diff --git a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/PeriodDataTypeMap.java b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/PeriodDataTypeMap.java
deleted file mode 100644
index 8c81e8f..0000000
--- a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/PeriodDataTypeMap.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column;
-
-/**
- *
- * @author "Giancarlo Panichi" g.panichi@isti.cnr.it
- *
- */
-public class PeriodDataTypeMap {
-
- public static PeriodDataType map(String id) {
- if (id.compareTo(PeriodDataType.DAY.toString()) == 0) {
- return PeriodDataType.DAY;
- } else {
- if (id.compareTo(PeriodDataType.MONTH.toString()) == 0) {
- return PeriodDataType.MONTH;
- } else {
- if (id.compareTo(PeriodDataType.QUARTER.toString()) == 0) {
- return PeriodDataType.QUARTER;
- } else {
- if (id.compareTo(PeriodDataType.YEAR.toString()) == 0) {
- return PeriodDataType.YEAR;
- } else {
- return null;
-
- }
- }
-
- }
- }
- }
-
-}