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.distributedlog.selector;
  
  import org.apache.distributedlog.LogRecordWithDLSN;
  
  /**
   * Save the first record with transaction id not less than the provided transaction id.
   * If all records' transaction id is less than provided transaction id, save the last record.
   */
  public class FirstTxIdNotLessThanSelector implements LogRecordSelector {
  
      LogRecordWithDLSN result;
      final long txId;
      boolean found = false;
  
      public FirstTxIdNotLessThanSelector(long txId) {
          this.txId = txId;
      }
  
      @Override
      public void process(LogRecordWithDLSN record) {
          if (found) {
              return;
          }
          this.result = record;
          if (record.getTransactionId() >= txId) {
              found = true;
          }
      }
  
      @Override
      public LogRecordWithDLSN result() {
          return this.result;
      }
  }
  