org.apache.lucene.benchmark.byTask.feeds.ReutersQueryMaker Maven / Gradle / Ivy

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Apache Lucene (module: benchmark)
There is a newer version: 9.11.1
package org.apache.lucene.benchmark.byTask.feeds;

/*
 * 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.analysis.Analyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryparser.classic.QueryParser;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.WildcardQuery;
import org.apache.lucene.search.spans.SpanFirstQuery;
import org.apache.lucene.search.spans.SpanNearQuery;
import org.apache.lucene.search.spans.SpanQuery;
import org.apache.lucene.search.spans.SpanTermQuery;
import org.apache.lucene.benchmark.byTask.tasks.NewAnalyzerTask;
import org.apache.lucene.util.Version;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;


/**
 * A QueryMaker that makes queries devised manually (by Grant Ingersoll) for
 * searching in the Reuters collection.
 */
public class ReutersQueryMaker extends AbstractQueryMaker implements QueryMaker {

  private static String [] STANDARD_QUERIES = {
    //Start with some short queries
    "Salomon", "Comex", "night trading", "Japan Sony",
    //Try some Phrase Queries
    "\"Sony Japan\"", "\"food needs\"~3",
    "\"World Bank\"^2 AND Nigeria", "\"World Bank\" -Nigeria",
    "\"Ford Credit\"~5",
    //Try some longer queries
    "airline Europe Canada destination",
    "Long term pressure by trade " +
    "ministers is necessary if the current Uruguay round of talks on " +
    "the General Agreement on Trade and Tariffs (GATT) is to " +
    "succeed"
  };
  
  private static Query[] getPrebuiltQueries(String field) {
    //  be wary of unanalyzed text
    return new Query[] {
        new SpanFirstQuery(new SpanTermQuery(new Term(field, "ford")), 5),
        new SpanNearQuery(new SpanQuery[]{new SpanTermQuery(new Term(field, "night")), new SpanTermQuery(new Term(field, "trading"))}, 4, false),
        new SpanNearQuery(new SpanQuery[]{new SpanFirstQuery(new SpanTermQuery(new Term(field, "ford")), 10), new SpanTermQuery(new Term(field, "credit"))}, 10, false),
        new WildcardQuery(new Term(field, "fo*")),
    };
  }
  
  /**
   * Parse the strings containing Lucene queries.
   *
   * @param qs array of strings containing query expressions
   * @param a  analyzer to use when parsing queries
   * @return array of Lucene queries
   */
  private static Query[] createQueries(List