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.flink.streaming.connectors.pinot.segment.name;
  
  import javax.annotation.Nullable;
  
  import static org.apache.flink.util.Preconditions.checkNotNull;
  
  /**
   * Adapted from {@link org.apache.pinot.core.segment.name.SimpleSegmentNameGenerator}.
   * <p>
   * Simple segment name generator which does not perform time conversion.
   * <p>
   * The segment name is simply joining the following fields with '_' but ignoring all the {@code null}s.
   * <ul>
   *   <li>Table name</li>
   *   <li>Minimum time value</li>
   *   <li>Maximum time value</li>
   *   <li>Segment name postfix</li>
   *   <li>Sequence id</li>
   * </ul>
   */
  public class SimpleSegmentNameGenerator implements PinotSinkSegmentNameGenerator {
  
      private final String tableName;
      private final String segmentNamePostfix;
  
      public SimpleSegmentNameGenerator(String tableName, String segmentNamePostfix) {
          this.tableName = checkNotNull(tableName);
          this.segmentNamePostfix = checkNotNull(segmentNamePostfix);
      }
  
      @Override
      public String generateSegmentName(int sequenceId, @Nullable Object minTimeValue, @Nullable Object maxTimeValue) {
          return JOINER
                  .join(tableName, minTimeValue, maxTimeValue, segmentNamePostfix, sequenceId >= 0 ? sequenceId : null);
      }
  
      @Override
      public String toString() {
          StringBuilder stringBuilder = new StringBuilder("SimpleSegmentNameGenerator: tableName=").append(tableName);
          if (segmentNamePostfix != null) {
              stringBuilder.append(", segmentNamePostfix=").append(segmentNamePostfix);
          }
          return stringBuilder.toString();
      }
  }
  