remove sort order in all cases where not needed

source/net/yacy/cora/federate/solr/connector/AbstractSolrConnector.java

@@ -61,6 +61,7 @@ public abstract class AbstractSolrConnector implements SolrConnector {
         //catchSuccessQuery.setQuery("-" + CollectionSchema.failreason_t.getSolrFieldName() + ":[* TO *]");
         catchSuccessQuery.setQuery("*:*"); // failreason_t is only available for core collection1
         catchSuccessQuery.setFields(CollectionSchema.id.getSolrFieldName());
+        catchSuccessQuery.clearSorts();
         catchSuccessQuery.setRows(0);
         catchSuccessQuery.setStart(0);
     }
@@ -186,6 +187,7 @@ public abstract class AbstractSolrConnector implements SolrConnector {
         params.setRows(count);
         params.setStart(offset);
         params.setFacet(false);
+        params.clearSorts();
         //params.addSortField( "price", SolrQuery.ORDER.asc );
 
         if (fields.length > 0) params.setFields(fields);
@@ -206,6 +208,7 @@ public abstract class AbstractSolrConnector implements SolrConnector {
         params.setRows(0);
         params.setStart(0);
         params.setFacet(false);
+        params.clearSorts();
         params.setFields(CollectionSchema.id.getSolrFieldName());
 
         // query the server
@@ -229,6 +232,7 @@ public abstract class AbstractSolrConnector implements SolrConnector {
         params.setRows(0);
         params.setStart(0);
         params.setFacet(false);
+        params.clearSorts();
         params.setFields(CollectionSchema.id.getSolrFieldName());
 
         // query the server
@@ -257,6 +261,7 @@ public abstract class AbstractSolrConnector implements SolrConnector {
         params.setFacetLimit(maxresults);
         params.setFacetSort(FacetParams.FACET_SORT_COUNT);
         params.setFields(fields);
+        params.clearSorts();
         for (String field: fields) params.addFacetField(field);
         
         // query the server
@@ -279,6 +284,7 @@ public abstract class AbstractSolrConnector implements SolrConnector {
         assert key.length() == 12;
         // construct query
         query.setQuery("{!raw f=" + CollectionSchema.id.getSolrFieldName() + "}" + key);
+        query.clearSorts();
         query.setRows(1);
         query.setStart(0);
         if (fields.length > 0) query.setFields(fields);