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Lucene example source code file (TestRunData.java)

This example Lucene source code file (TestRunData.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

collection, iterator, linkedhashmap, linkedhashmap, memusage, string, string, stringbuilder, testrundata, timedata, timedata, total, util, vector, vector

The Lucene TestRunData.java source code

package org.apache.lucene.benchmark.stats;
/**
 * Copyright 2005 The Apache Software Foundation
 *
 * Licensed 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.
 */


import java.util.LinkedHashMap;
import java.util.Vector;
import java.util.Collection;
import java.util.Iterator;

/**
 * This class holds series of TimeData related to a single test run. TimeData
 * values may contribute to different measurements, so this class provides also
 * some useful methods to separate them.
 *
 */
public class TestRunData {
  private String id;

  /** Start and end time of this test run. */
  private long start = 0L, end = 0L;

  private LinkedHashMap<String,Vector data = new LinkedHashMap>();

  public TestRunData() {}

  public TestRunData(String id) {
    this.id = id;
  }

    public LinkedHashMap<String,Vector getData()
    {
        return data;
    }

    public String getId()
    {
        return id;
    }

    public void setId(String id)
    {
        this.id = id;
    }

    public long getEnd()
    {
        return end;
    }

    public long getStart()
    {
        return start;
    }

    /** Mark the starting time of this test run. */
  public void startRun() {
    start = System.currentTimeMillis();
  }

  /** Mark the ending time of this test run. */
  public void endRun() {
    end = System.currentTimeMillis();
  }

  /** Add a data point. */
  public void addData(TimeData td) {
    td.recordMemUsage();
    Vector<TimeData> v = data.get(td.name);
    if (v == null) {
      v = new Vector<TimeData>();
      data.put(td.name, v);
    }
    v.add((TimeData)td.clone());
  }

  /** Get a list of all available types of data points. */
  public Collection<String> getLabels() {
    return data.keySet();
  }

  /** Get total values from all data points of a given type. */
  public TimeData getTotals(String label) {
    Vector<TimeData> v = data.get(label);
      if (v == null)
      {
          return null;
      }
    TimeData res = new TimeData("TOTAL " + label);
    for (int i = 0; i < v.size(); i++) {
      TimeData td = v.get(i);
      res.count += td.count;
      res.elapsed += td.elapsed;
    }
    return res;
  }

  /** Get total values from all data points of all types.
   * @return a list of TimeData values for all types.
   */
  public Vector<TimeData> getTotals() {
    Collection<String> labels = getLabels();
    Vector<TimeData> v = new Vector();
    Iterator<String> it = labels.iterator();
    while (it.hasNext()) {
      TimeData td = getTotals(it.next());
      v.add(td);
    }
    return v;
  }

  /** Get memory usage stats for a given data type. */
  public MemUsage getMemUsage(String label) {
    Vector<TimeData> v = data.get(label);
      if (v == null)
      {
          return null;
      }
    MemUsage res = new MemUsage();
    res.minFree = Long.MAX_VALUE;
    res.minTotal = Long.MAX_VALUE;
    long avgFree = 0L, avgTotal = 0L;
    for (int i = 0; i < v.size(); i++) {
      TimeData td = v.get(i);
        if (res.maxFree < td.freeMem)
        {
            res.maxFree = td.freeMem;
        }
        if (res.maxTotal < td.totalMem)
        {
            res.maxTotal = td.totalMem;
        }
        if (res.minFree > td.freeMem)
        {
            res.minFree = td.freeMem;
        }
        if (res.minTotal > td.totalMem)
        {
            res.minTotal = td.totalMem;
        }
      avgFree += td.freeMem;
      avgTotal += td.totalMem;
    }
    res.avgFree = avgFree / v.size();
    res.avgTotal = avgTotal / v.size();
    return res;
  }

  /** Return a string representation. */
  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    for (final String label : getLabels()) {
        sb.append(id).append("-").append(label).append(" ").append(getTotals(label).toString(false)).append(" ");
        sb.append(getMemUsage(label).toScaledString(1024 * 1024, "MB")).append("\n");
    }
    return sb.toString();
  }
}

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