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Lucene example source code file (Judge.java)

This example Lucene source code file (Judge.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

io, judge, judge, printwriter, printwriter, qualityquery, qualityquery

The Lucene Judge.java source code

/**
 * 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.lucene.benchmark.quality;

import java.io.PrintWriter;

/**
 * Judge if a document is relevant for a quality query.
 */
public interface Judge {

  /**
   * Judge if document <code>docName is relevant for the given quality query.
   * @param docName name of doc tested for relevancy.
   * @param query tested quality query. 
   * @return true if relevant, false if not.
   */
  public boolean isRelevant(String docName, QualityQuery query);

  /**
   * Validate that queries and this Judge match each other.
   * To be perfectly valid, this Judge must have some data for each and every 
   * input quality query, and must not have any data on any other quality query.  
   * <b>Note: the quality benchmark run would not fail in case of imperfect
   * validity, just a warning message would be logged.  
   * @param qq quality queries to be validated.
   * @param logger if not null, validation issues are logged.
   * @return true if perfectly valid, false if not.
   */
  public boolean validateData (QualityQuery qq[], PrintWriter logger);
  
  /**
   * Return the maximal recall for the input quality query. 
   * It is the number of relevant docs this Judge "knows" for the query. 
   * @param query the query whose maximal recall is needed.
   */
  public int maxRecall (QualityQuery query);

}

Other Lucene examples (source code examples)

Here is a short list of links related to this Lucene Judge.java source code file:



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