com.github.le11.nls.lucene.UIMABaseAnalyzerTest.java Source code

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/*
 * 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 com.github.le11.nls.lucene;

import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.Version;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.io.StringReader;

import static org.junit.Assert.*;

public class UIMABaseAnalyzerTest {

    private Directory dir;

    private UIMABaseAnalyzer analyzer;

    private IndexWriter writer;

    @Before
    public void setUp() throws Exception {
        dir = new RAMDirectory();
        analyzer = new UIMABaseAnalyzer("/WhitespaceTokenizer.xml", "org.apache.uima.TokenAnnotation");
        writer = new IndexWriter(dir, new IndexWriterConfig(Version.LUCENE_32, analyzer));
    }

    @After
    public void tearDown() throws Exception {
        writer.close();
    }

    @Test
    public void baseUIMAAnalyzerStreamTest() {
        try {
            TokenStream ts = analyzer.tokenStream("text", new StringReader("the big brown fox jumped on the wood"));
            CharTermAttribute termAtt = ts.addAttribute(CharTermAttribute.class);
            OffsetAttribute offsetAtt = ts.addAttribute(OffsetAttribute.class);
            while (ts.incrementToken()) {
                assertNotNull(offsetAtt);
                assertNotNull(termAtt);
                System.out.println("token '" + termAtt.toString() + "' has offset " + offsetAtt.startOffset() + ","
                        + offsetAtt.endOffset());
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getLocalizedMessage());
        }
    }

    @Test
    public void baseUIMAAnalyzerIntegrationTest() {
        try {
            // add the first doc
            Document doc = new Document();
            doc.add(new Field("title", "this is a dummy title ", Field.Store.YES, Field.Index.ANALYZED));
            doc.add(new Field("contents", "there is some content written here", Field.Store.YES,
                    Field.Index.ANALYZED));
            writer.addDocument(doc, analyzer);
            writer.commit();

            // try the search over the first doc
            IndexSearcher indexSearcher = new IndexSearcher(writer.getReader());
            TopDocs result = indexSearcher.search(new MatchAllDocsQuery("contents"), 10);
            assertTrue(result.totalHits > 0);
            Document d = indexSearcher.doc(result.scoreDocs[0].doc);
            assertNotNull(d);
            assertNotNull(d.getFieldable("title"));
            assertNotNull(d.getFieldable("contents"));

            // add a second doc
            doc = new Document();
            doc.add(new Field("title", "il mio titolo", Field.Store.YES, Field.Index.ANALYZED));
            doc.add(new Field("contents", "che cosa e' scritto qui", Field.Store.YES, Field.Index.ANALYZED));
            writer.addDocument(doc, analyzer);
            writer.commit();

            // do a matchalldocs query to retrieve both docs
            indexSearcher = new IndexSearcher(writer.getReader());
            result = indexSearcher.search(new MatchAllDocsQuery("contents"), 10);
            assertTrue(result.totalHits > 0);
            for (ScoreDoc di : result.scoreDocs) {
                d = indexSearcher.doc(di.doc);
                assertNotNull(d);
                assertNotNull(d.getFieldable("title"));
                assertNotNull(d.getFieldable("contents"));
            }
        } catch (Exception e) {
            fail(e.getLocalizedMessage());
        }
    }
}