code: /*
   * citygml-tools - Collection of tools for processing CityGML files
   * https://github.com/citygml4j/citygml-tools
   *
   * citygml-tools is part of the citygml4j project
   *
   * Copyright 2018-2023 Claus Nagel <claus.nagel@gmail.com>
   *
   * Licensed 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.citygml4j.tools.util;
  
  import org.citygml4j.core.model.core.AbstractFeature;
  import org.xmlobjects.gml.model.base.AbstractGML;
  import org.xmlobjects.gml.util.id.DefaultIdCreator;
  
  public class CityObjects {
  
      private CityObjects() {
      }
  
      public static String getObjectSignature(AbstractGML object) {
          return object.getClass().getSimpleName()
                  + " '" + (object.getId() != null ? object.getId() : "unknown ID") + "'";
      }
  
      public static String getIdFromReference(String reference) {
          int index = reference.lastIndexOf("#");
          return index != -1 ? reference.substring(index + 1) : reference;
      }
  
      public static String getOrCreateId(AbstractFeature feature) {
          if (feature.getId() == null) {
              feature.setId(DefaultIdCreator.getInstance().createId());
          }
  
          return feature.getId();
      }
  }
  