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Lucene example source code file (RepSumByPrefTask.java)

This example Lucene source code file (RepSumByPrefTask.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

clonenotsupportedexception, exception, linkedhashmap, override, report, report, reporttask, repsumbypreftask, repsumbypreftask, runtimeexception, string, string, taskstats, taskstats, util

The Lucene RepSumByPrefTask.java source code

package org.apache.lucene.benchmark.byTask.tasks;

/**
 * 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.
 */

import org.apache.lucene.benchmark.byTask.PerfRunData;
import org.apache.lucene.benchmark.byTask.stats.Report;
import org.apache.lucene.benchmark.byTask.stats.TaskStats;

import java.util.LinkedHashMap;
import java.util.List;

/**
 * Report by-name-prefix statistics aggregated by name.
 * <br>Other side effects: None.
 */
public class RepSumByPrefTask extends ReportTask {

  public RepSumByPrefTask(PerfRunData runData) {
    super(runData);
  }

  protected String prefix;

  @Override
  public int doLogic() throws Exception {
    Report rp = reportSumByPrefix(getRunData().getPoints().taskStats());
    
    System.out.println();
    System.out.println("------------> Report Sum By Prefix ("+prefix+") ("+
        rp.getSize()+" about "+rp.getReported()+" out of "+rp.getOutOf()+")");
    System.out.println(rp.getText());
    System.out.println();

    return 0;
  }

  protected Report reportSumByPrefix (List<TaskStats> taskStats) {
    // aggregate by task name
    int reported = 0;
    LinkedHashMap<String,TaskStats> p2 = new LinkedHashMap();
    for (final TaskStats stat1 : taskStats) {
      if (stat1.getElapsed()>=0 && stat1.getTask().getName().startsWith(prefix)) { // only ended tasks with proper name
        reported++;
        String name = stat1.getTask().getName();
        TaskStats stat2 = p2.get(name);
        if (stat2 == null) {
          try {
            stat2 = (TaskStats) stat1.clone();
          } catch (CloneNotSupportedException e) {
            throw new RuntimeException(e);
          }
          p2.put(name,stat2);
        } else {
          stat2.add(stat1);
        }
      }
    }
    // now generate report from secondary list p2    
    return genPartialReport(reported, p2, taskStats.size());
  }
  

  public void setPrefix(String prefix) {
    this.prefix = prefix;
  }

  /* (non-Javadoc)
   * @see PerfTask#toString()
   */
  @Override
  public String toString() {
    return super.toString()+" "+prefix;
  }

}

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