Iqss/4977 - Reorder Publication Year Facet Chronologically

src/main/java/edu/harvard/iq/dataverse/search/FacetLabel.java

@@ -3,7 +3,7 @@
 import javax.inject.Named;
 
 @Named
-public class FacetLabel {
+public class FacetLabel implements Comparable<FacetLabel>{
 
     private String name;
     private Long count;
@@ -46,4 +46,12 @@ public void setFilterQuery(String filterQuery) {
         this.filterQuery = filterQuery;
     }
 
+    @Override
+    public int compareTo(FacetLabel otherFacetLabel) {
+        // This is used to 'chronologically' order entries in the Publication Year facet
+        // display. That should work for 4 digit years (until 10K AD), but this could be
+        // changed to do a real numberical comparison instead.
+        return name.compareTo(otherFacetLabel.getName());
+    }
+
 }

src/main/java/edu/harvard/iq/dataverse/search/SearchIncludeFragment.java

@@ -33,6 +33,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Base64;
+import java.util.Collections;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -450,6 +451,14 @@ public void search(boolean onlyDataRelatedToMe) {
 
             setDisplayCardValues();
 
+            //Sort Pub Year Chronologically (alphabetically descending - works until 10000 AD)
+            for(FacetCategory fc: facetCategoryList) {
+                if(fc.getName().equals(SearchFields.PUBLICATION_YEAR)) {
+                    Collections.sort(fc.getFacetLabel(), Collections.reverseOrder());     
+                }
+            }
+
+
             dataversePage.setQuery(query);
             dataversePage.setFacetCategoryList(facetCategoryList);
             dataversePage.setFilterQueries(filterQueriesFinal);