Paginated results: special sorting for timespans

src/server/sparql/FacetConfigs.js

@@ -33,7 +33,8 @@ export const facetConfigs = {
     productionTimespan: {
       id: 'productionTimespan',
       facetValueFilter: '',
-      labelPath: '^crm:P108_has_produced/crm:P4_has_time-span/crm:P82a_begin_of_the_begin',
+      sortByAscPredicate: '^crm:P108_has_produced/crm:P4_has_time-span/crm:P82a_begin_of_the_begin',
+      sortByDescPredicate: '^crm:P108_has_produced/crm:P4_has_time-span/crm:P82b_end_of_the_end',
       predicate: '^crm:P108_has_produced/crm:P4_has_time-span',
       startProperty: 'crm:P82a_begin_of_the_begin',
       endProperty: 'crm:P82b_end_of_the_end',

src/server/sparql/FacetResults.js

@@ -167,7 +167,14 @@ const getPaginatedData = ({
       facetID: null}));
   }
   q = q.replace('<FACET_CLASS>', facetConfig.facetClass);
-  q = q.replace('<ORDER_BY_PREDICATE>', facetConfig[sortBy].labelPath);
+  if (sortBy.endsWith('Timespan')) {
+    q = q.replace('<ORDER_BY_PREDICATE>',
+      sortDirection === 'asc'
+        ? facetConfig[sortBy].sortByAscPredicate
+        : facetConfig[sortBy].sortByDescPredicate);
+  } else {
+    q = q.replace('<ORDER_BY_PREDICATE>', facetConfig[sortBy].labelPath);
+  }
   q = q.replace('<SORT_DIRECTION>', sortDirection);
   q = q.replace('<PAGE>', `LIMIT ${pagesize} OFFSET ${page * pagesize}`);
   let resultSetProperties;