Do not sort query for any object

Kitodo/src/main/java/org/kitodo/production/services/data/BeanQuery.java

@@ -18,6 +18,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Map.Entry;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -328,6 +329,16 @@ public void defineSorting(String sortField, SortOrder sortOrder) {
         sorting = Pair.of(varName + '.' + sortField, SortOrder.DESCENDING.equals(sortOrder) ? "DESC" : "ASC");
     }
 
+    /**
+     * Disables the sort order of the query. This can speed up the check whether
+     * there is <i>any</i> object for a specific search query. However, you no
+     * longer have a reliable order when navigating the result list, and should
+     * therefore only be used in special cases.
+     */
+    public void setUnordered() {
+        sorting = null;
+    }
+
     /**
      * Forms and returns a query to count all objects.
      * 
@@ -351,7 +362,9 @@ public String formQueryForAll() {
             query.append("SELECT ").append(varName).append(' ');
         }
         innerFormQuery(query);
-        query.append(" ORDER BY ").append(sorting.getKey()).append(' ').append(sorting.getValue());
+        if (Objects.nonNull(sorting)) {
+            query.append(" ORDER BY ").append(sorting.getKey()).append(' ').append(sorting.getValue());
+        }
         return query.toString();
     }
 

Kitodo/src/main/java/org/kitodo/production/services/data/ProcessService.java

@@ -635,6 +635,7 @@ public Collection<?> findByDocket(int docketId) throws DAOException {
     public Collection<?> findByTemplate(int templateId) throws DAOException {
         BeanQuery query = new BeanQuery(Process.class);
         query.addIntegerRestriction("template.id", templateId);
+        query.setUnordered();
         return getByQuery(query.formQueryForAll(), query.getQueryParameters(), 0, 1);
     }