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 com.alibaba.jstorm.common.metric.old.window;
  
  import com.alibaba.jstorm.common.metric.old.operator.Sampling;
  import com.alibaba.jstorm.common.metric.old.operator.StartTime;
  import com.alibaba.jstorm.common.metric.old.operator.merger.Merger;
  import com.alibaba.jstorm.common.metric.old.operator.updater.Updater;
  
  import java.util.ArrayList;
  
  public class AllWindow<V> implements Sampling<V>, StartTime {
  
      private static final long serialVersionUID = -8523514907315740812L;
  
      protected V unflushed;
      protected V defaultValue;
  
      protected Updater<V> updater;
      protected Merger<V> merger;
      protected long startTime;
  
      AllWindow(V defaultValue, Updater<V> updater, Merger<V> merger) {
  
          this.updater = updater;
          this.merger = merger;
  
          this.defaultValue = defaultValue;
          this.startTime = System.currentTimeMillis();
      }
  
      @Override
      public void update(Number obj) {
          // TODO Auto-generated method stub
          synchronized (this) {
              unflushed = updater.update(obj, unflushed);
          }
      }
  
      public void updateBatch(V batch) {
          synchronized (this) {
              unflushed = updater.updateBatch(batch, unflushed);
          }
      }
  
      @Override
      public V getSnapshot() {
          // TODO Auto-generated method stub
          V ret = merger.merge(new ArrayList<V>(), unflushed, this);
          if (ret == null) {
              return defaultValue;
          } else {
              return ret;
          }
      }
  
      @Override
      public long getStartTime() {
          // TODO Auto-generated method stub
          return startTime;
      }
  
  }
  