Add filter term to dh query

oaipmh-core/src/main/java/info/textgrid/middleware/SetDeliverer.java

@@ -123,6 +123,7 @@ public class SetDeliverer {
       AggregationBuilder filterCollections = AggregationBuilders.filter("collectionFilter",
           QueryBuilders.boolQuery().must(QueryBuilders.matchPhraseQuery(
               "descriptiveMetada.dc:format", TextGridMimetypes.DARIAH_COLLECTION)));
+      AggregationBuilder filterTerm = AggregationBuilders.terms("collectionTerm").size(1000);
 
       searchSourceBuilder.aggregation(filterCollections);
     }
@@ -214,7 +215,7 @@ public class SetDeliverer {
             // Filter trytry = getRecordListItems.getAggregations().get("projectsPublic");
             // Terms trytry2 = trytry.getAggregations().get("projects");
             Filter filterCollection = getRecordListItems.getAggregations().get("collectionFilter");
-            Terms collectionTerms = filterCollection.getAggregations().get("collectionFilter");
+            Terms collectionTerms = filterCollection.getAggregations().get("collectionTerm");
             for (Bucket b : collectionTerms.getBuckets()) {
 
               System.out.println("  ##  ID  -->  " + b.getKeyAsString());