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
   * <p/>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p/>
   * 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 storm.trident.windowing;
  
  import storm.trident.state.State;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * {@code State} implementation for windowing operation. This is mainly used to get callback of commit txId of batches
   * in which triggers are emitted.
   */
  public class WindowsState implements State {
      private static final Logger LOG = LoggerFactory.getLogger(WindowsState.class);
  
      private Long currentTxId;
  
      public WindowsState() {
      }
  
      @Override
      public void beginCommit(Long txId) {
          currentTxId = txId;
          LOG.debug(" WindowsState.beginCommit:: [{}] ", txId);
      }
  
      @Override
      public void commit(Long txId) {
          LOG.debug("WindowsState.commit :: [{}]", txId);
      }
  
      public Long getCurrentTxId() {
          return currentTxId;
      }
  }
  