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.kafka.streams.kstream.internals;
  
  import org.apache.kafka.streams.kstream.Named;
  
  public class NamedInternal extends Named {
  
      public static NamedInternal empty() {
          return new NamedInternal((String) null);
      }
  
      public static NamedInternal with(final String name) {
          return new NamedInternal(name);
      }
  
      /**
       * Creates a new {@link NamedInternal} instance.
       *
       * @param internal  the internal name.
       */
      NamedInternal(final Named internal) {
          super(internal);
      }
  
      /**
       * Creates a new {@link NamedInternal} instance.
       *
       * @param internal the internal name.
       */
      NamedInternal(final String internal) {
          super(internal);
      }
  
      /**
       * @return a string name.
       */
      public String name() {
          return name;
      }
  
      @Override
      public NamedInternal withName(final String name) {
          return new NamedInternal(name);
      }
      
      String suffixWithOrElseGet(final String suffix, final String other) {
          if (name != null) {
              return name + suffix;
          } else {
              return other;
          }
      }
  
      String suffixWithOrElseGet(final String suffix, final InternalNameProvider provider, final String prefix) {
          // We actually do not need to generate processor names for operation if a name is specified.
          // But before returning, we still need to burn index for the operation to keep topology backward compatibility.
          if (name != null) {
              provider.newProcessorName(prefix);
  
              final String suffixed = name + suffix;
              // Re-validate generated name as suffixed string could be too large.
              Named.validate(suffixed);
  
              return suffixed;
          } else {
              return provider.newProcessorName(prefix);
          }
      }
  
      String orElseGenerateWithPrefix(final InternalNameProvider provider, final String prefix) {
          // We actually do not need to generate processor names for operation if a name is specified.
          // But before returning, we still need to burn index for the operation to keep topology backward compatibility.
          if (name != null) {
              provider.newProcessorName(prefix);
              return name;
          }  else {
              return provider.newProcessorName(prefix);
          }
      }
  
  }
  