content: /*
   *  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.causeway.viewer.restfulobjects.viewer.util;
  
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import org.apache.causeway.viewer.restfulobjects.applib.JsonRepresentation;
  
  public final class UrlParserUtils {
  
      private UrlParserUtils(){}
  
      private static final Pattern DOMAIN_TYPE = Pattern.compile(".*domain-types\\/([^/]+).*");
  
      public static final String domainTypeFrom(final JsonRepresentation link) {
          return domainTypeFrom(link.getString("href"));
      }
  
      public static String domainTypeFrom(final String href) {
          final Matcher matcher = DOMAIN_TYPE.matcher(href);
          if (!matcher.matches()) {
              return null;
          }
          return matcher.group(1);
      }
  
  }
  