aos.lucene.analysis.positional.PositionalPorterStopAnalyzerTest.java Source code

Introduction

Here is the source code for aos.lucene.analysis.positional.PositionalPorterStopAnalyzerTest.java

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package aos.lucene.analysis.positional;

import junit.framework.TestCase;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.Version;

import io.aos.lucene.util.TestUtil;

// From chapter 4
public class PositionalPorterStopAnalyzerTest extends TestCase {
    private static PositionalPorterStopAnalyzer porterAnalyzer = new PositionalPorterStopAnalyzer();

    private IndexSearcher searcher;
    private QueryParser parser;

    public void setUp() throws Exception {

        RAMDirectory directory = new RAMDirectory();

        IndexWriter writer = new IndexWriter(directory, porterAnalyzer, IndexWriter.MaxFieldLength.UNLIMITED);

        Document doc = new Document();
        doc.add(new Field("contents", "The quick brown fox jumps over the lazy dog", Field.Store.YES,
                Field.Index.ANALYZED));
        writer.addDocument(doc);
        writer.close();
        searcher = new IndexSearcher(directory, true);
        parser = new QueryParser(Version.LUCENE_46, "contents", porterAnalyzer);
    }

    public void testWithSlop() throws Exception {
        parser.setPhraseSlop(1);

        Query query = parser.parse("\"over the lazy\"");

        assertEquals("hole accounted for", 1, TestUtil.hitCount(searcher, query));
    }

    public void testStems() throws Exception {
        Query query = new QueryParser(Version.LUCENE_46, "contents", porterAnalyzer).parse("laziness");
        assertEquals("lazi", 1, TestUtil.hitCount(searcher, query));

        query = parser.parse("\"fox jumped\"");
        assertEquals("jump jumps jumped jumping", 1, TestUtil.hitCount(searcher, query));
    }

}