text: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.nifi.controller.state;
  
  import org.apache.nifi.web.api.dto.StateEntryDTO;
  
  import java.text.Collator;
  import java.util.Comparator;
  import java.util.Locale;
  
  public class SortedStateUtils {
  
      /**
       * The maximum number of state entries to return to a client
       */
      public static final int MAX_COMPONENT_STATE_ENTRIES = 500;
  
      /**
       * Gets a comparator for comparing state entry keys.
       *
       * @return comparator for comparing state entry keys
       */
      public static Comparator<String> getKeyComparator() {
          final Collator collator = Collator.getInstance(Locale.US);
          return new Comparator<String>() {
              @Override
              public int compare(String s1, String s2) {
                  return collator.compare(s1, s2);
              }
          };
      }
  
      /**
       * Gets a comparator for comparing state entry keys.
       *
       * @return comparator for comparing state entry keys
       */
      public static Comparator<StateEntryDTO> getEntryDtoComparator() {
          final Collator collator = Collator.getInstance(Locale.US);
          return new Comparator<StateEntryDTO>() {
              @Override
              public int compare(StateEntryDTO o1, StateEntryDTO o2) {
                  return collator.compare(o1.getKey(), o2.getKey());
              }
          };
      }
  }
  