aos.lucene.search.ext.queryparser.NumericQueryParserTest.java Source code

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Here is the source code for aos.lucene.search.ext.queryparser.NumericQueryParserTest.java

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package aos.lucene.search.ext.queryparser;

import junit.framework.TestCase;

import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.Query;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.TermRangeQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.document.DateTools;
import org.apache.lucene.util.Version;

import io.aos.lucene.util.TestUtil;

import java.util.Locale;

// From chapter 6
public class NumericQueryParserTest extends TestCase {
    private Analyzer analyzer;
    private IndexSearcher searcher;
    private Directory dir;

    protected void setUp() throws Exception {
        analyzer = new WhitespaceAnalyzer(Version.LUCENE_46);
        dir = TestUtil.getBookIndexDirectory();
        searcher = new IndexSearcher(dir, true);
    }

    protected void tearDown() throws Exception {
        searcher.close();
        dir.close();
    }

    static class NumericRangeQueryParser extends QueryParser {
        public NumericRangeQueryParser(Version matchVersion, String field, Analyzer a) {
            super(matchVersion, field, a);
        }

        public Query getRangeQuery(String field, String part1, String part2, boolean inclusive)
                throws ParseException {
            TermRangeQuery query = (TermRangeQuery) super.getRangeQuery(field, part1, part2, inclusive);
            if ("price".equals(field)) {
                return NumericRangeQuery.newDoubleRange("price", Double.parseDouble(query.getLowerTerm()),
                        Double.parseDouble(query.getUpperTerm()), query.includesLower(), query.includesUpper());
            } else {
                return query;
            }
        }
    }

    /*
      #A Get super()'s default TermRangeQuery
      #B Create matching NumericRangeQuery
      #C Return default TermRangeQuery
    */

    public void testNumericRangeQuery() throws Exception {
        String expression = "price:[10 TO 20]";

        QueryParser parser = new NumericRangeQueryParser(Version.LUCENE_46, "subject", analyzer);

        Query query = parser.parse(expression);
        LOGGER.info(expression + " parsed to " + query);
    }

    public static class NumericDateRangeQueryParser extends QueryParser {
        public NumericDateRangeQueryParser(Version matchVersion, String field, Analyzer a) {
            super(matchVersion, field, a);
        }

        public Query getRangeQuery(String field, String part1, String part2, boolean inclusive)
                throws ParseException {
            TermRangeQuery query = (TermRangeQuery) super.getRangeQuery(field, part1, part2, inclusive);

            if ("pubmonth".equals(field)) {
                return NumericRangeQuery.newIntRange("pubmonth", Integer.parseInt(query.getLowerTerm()),
                        Integer.parseInt(query.getUpperTerm()), query.includesLower(), query.includesUpper());
            } else {
                return query;
            }
        }
    }

    public void testDefaultDateRangeQuery() throws Exception {
        QueryParser parser = new QueryParser(Version.LUCENE_46, "subject", analyzer);
        Query query = parser.parse("pubmonth:[1/1/04 TO 12/31/04]");
        LOGGER.info("default date parsing: " + query);
    }

    public void testDateRangeQuery() throws Exception {
        String expression = "pubmonth:[01/01/2010 TO 06/01/2010]";

        QueryParser parser = new NumericDateRangeQueryParser(Version.LUCENE_46, "subject", analyzer);

        parser.setDateResolution("pubmonth", DateTools.Resolution.MONTH);
        parser.setLocale(Locale.US);

        Query query = parser.parse(expression);
        LOGGER.info(expression + " parsed to " + query);

        TopDocs matches = searcher.search(query, 10);
        assertTrue("expecting at least one result !", matches.totalHits > 0);
    }
    /*
      1 Tell QueryParser date resolution
    */
}