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.activemq.tool.reports;
  
  import java.util.Iterator;
  import java.util.List;
  
  public final class PerformanceStatisticsUtil {
      private PerformanceStatisticsUtil() {
      }
  
      public static long getSum(List numList) {
          long sum = 0;
          if (numList != null) {
              for (Iterator i = numList.iterator(); i.hasNext();) {
                  sum += (Long) i.next();
              }
          } else {
              sum = -1;
          }
          return sum;
      }
  
      public static long getMin(List numList) {
          long min = Long.MAX_VALUE;
          if (numList != null) {
              for (Iterator i = numList.iterator(); i.hasNext();) {
                  min = Math.min((Long) i.next(), min);
              }
          } else {
              min = -1;
          }
          return min;
      }
  
      public static long getMax(List numList) {
          long max = Long.MIN_VALUE;
          if (numList != null) {
              for (Iterator i = numList.iterator(); i.hasNext();) {
                  max = Math.max((Long) i.next(), max);
              }
          } else {
              max = -1;
          }
          return max;
      }
  
      public static double getAve(List numList) {
          double ave;
          if (numList != null) {
              int sampleCount = 0;
              long totalTP = 0;
              for (Iterator i = numList.iterator(); i.hasNext();) {
                  sampleCount++;
                  totalTP += (Long) i.next();
              }
              return (double)totalTP / (double)sampleCount;
          } else {
              ave = -1;
          }
          return ave;
      }
  
      public static double getAveEx(List numList) {
          double ave;
          long minTP = getMin(numList);
          long maxTP = getMax(numList);
          if (numList != null) {
              int sampleCount = 0;
              long totalTP = 0;
              long sampleTP;
              for (Iterator i = numList.iterator(); i.hasNext();) {
                  sampleCount++;
                  sampleTP = (Long) i.next();
                  if (sampleTP != minTP && sampleTP != maxTP) {
                      totalTP += sampleTP;
                  }
              }
              return (double)totalTP / (double)sampleCount;
          } else {
              ave = -1;
          }
          return ave;
      }
  
  }
  