Example usage for org.apache.lucene.index DirectoryReader open

Introduction

In this page you can find the example usage for org.apache.lucene.index DirectoryReader open.

Prototype

public static DirectoryReader open(final IndexCommit commit) throws IOException 

Source Link

Document

Expert: returns an IndexReader reading the index in the given IndexCommit .

Usage

From source file:com.github.flaxsearch.resources.IndexResourceTestBase.java

License:Apache License

@BeforeClass
public static void setup() throws IOException {
    directory = Fixtures.openDirectory();
    reader = DirectoryReader.open(directory);
}

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From source file:com.github.flaxsearch.util.FSReaderManager.java

License:Apache License

public FSReaderManager(String indexPath) throws IOException {
    this.directory = FSDirectory.open(Paths.get(indexPath));
    this.reader = DirectoryReader.open(directory);
}

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From source file:com.github.jiloc.USTweetsAnalyzer.Analyzer_Index.java

public Analyzer_Index(Directory dir) throws IOException {
    ir = DirectoryReader.open(dir);
    searcher = new IndexSearcher(ir);
    // universe =  new HashMap<String, HashSet<String>>();

}

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From source file:com.github.lucene.store.database.DatabaseDirectoryITest.java

License:Apache License

@Test(expected = IndexNotFoundException.class)
public void whenIndexIsEmptyAndOpenIndexReader_shouldThrowIndexNotFoundException() throws IOException {
    DirectoryReader.open(directory);
}

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From source file:com.github.mosuka.apache.lucene.example.cmd.SearchCommand.java

License:Apache License

@Override
public void execute(Map<String, Object> attrs) {
    Map<String, Object> responseMap = new LinkedHashMap<String, Object>();

    String responseJSON = null;// w w w.j  a  va  2s  . c  o  m
    Directory indexDir = null;
    IndexReader reader = null;

    try {
        String index = (String) attrs.get("index");
        String queryStr = (String) attrs.get("query");

        indexDir = FSDirectory.open(new File(index).toPath());

        QueryParser queryParser = new QueryParser("text", new JapaneseAnalyzer());
        Query query = queryParser.parse(queryStr);

        reader = DirectoryReader.open(indexDir);
        IndexSearcher searcher = new IndexSearcher(reader);

        TopDocs topDocs = searcher.search(query, 10);

        List<Map<String, Object>> documentList = new LinkedList<Map<String, Object>>();
        for (ScoreDoc scoreDoc : topDocs.scoreDocs) {
            Document document = searcher.doc(scoreDoc.doc);

            Map<String, Object> documentMap = new LinkedHashMap<String, Object>();
            for (IndexableField f : document.getFields()) {
                documentMap.put(f.name(), f.stringValue());
            }
            documentMap.put("score", scoreDoc.score);
            documentList.add(documentMap);
        }

        responseMap.put("status", 0);
        responseMap.put("message", "OK");
        responseMap.put("totalHits", topDocs.totalHits);
        responseMap.put("maxScore", topDocs.getMaxScore());
        responseMap.put("result", documentList);
    } catch (IOException e) {
        responseMap.put("status", 1);
        responseMap.put("message", e.getMessage());
    } catch (ParseException e) {
        responseMap.put("status", 1);
        responseMap.put("message", e.getMessage());
    } finally {
        try {
            if (reader != null) {
                reader.close();
            }
        } catch (IOException e) {
            responseMap.put("status", 1);
            responseMap.put("message", e.getMessage());
        }
        try {
            if (indexDir != null) {
                indexDir.close();
            }
        } catch (IOException e) {
            responseMap.put("status", 1);
            responseMap.put("message", e.getMessage());
        }
    }

    try {
        ObjectMapper mapper = new ObjectMapper();
        responseJSON = mapper.writeValueAsString(responseMap);
    } catch (IOException e) {
        responseJSON = String.format("{\"status\":1, \"message\":\"%s\"}", e.getMessage());
    }
    System.out.println(responseJSON);
}

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From source file:com.github.msarhan.lucene.ArabicRootExtractorAnalyzerTests.java

License:Open Source License

@Test
public void testArabicRootIndex() throws IOException, ParseException, URISyntaxException {
    Directory index = new RAMDirectory();
    ArabicRootExtractorAnalyzer analyzer = new ArabicRootExtractorAnalyzer();
    IndexWriterConfig config = new IndexWriterConfig(analyzer);

    final AtomicInteger id = new AtomicInteger(0);
    IndexWriter w = new IndexWriter(index, config);
    URL url = ArabicRootExtractorStemmer.class.getClassLoader()
            .getResource("com/github/msarhan/lucene/fateha.txt");

    if (url == null) {
        fail("Not able to load data file!");
    }/*from  w w w  .  ja v a 2 s .c o m*/

    Files.lines(new File(url.toURI()).toPath())
            .forEach(line -> addDoc(w, line, String.valueOf(id.incrementAndGet())));
    w.close();

    String querystr = "";
    Query q = new QueryParser("title", analyzer).parse(querystr);

    int hitsPerPage = 10;
    IndexReader reader = DirectoryReader.open(index);
    IndexSearcher searcher = new IndexSearcher(reader);
    TopDocs docs = searcher.search(q, hitsPerPage);

    //print(searcher, docs);

    assertEquals(2, docs.scoreDocs.length);
}

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From source file:com.github.msarhan.lucene.ArabicRootExtractorAnalyzerTests.java

License:Open Source License

@Test
public void testInlineStemmer() throws IOException, ParseException {

    //Initialize the index
    Directory index = new RAMDirectory();
    Analyzer analyzer = new ArabicRootExtractorAnalyzer();
    IndexWriterConfig config = new IndexWriterConfig(analyzer);
    IndexWriter writer = new IndexWriter(index, config);

    Document doc = new Document();
    doc.add(new StringField("number", "1", Field.Store.YES));
    doc.add(new TextField("title", "?? ? ? ??",
            Field.Store.YES));//from w  w w. ja  va  2s . com
    writer.addDocument(doc);

    doc = new Document();
    doc.add(new StringField("number", "2", Field.Store.YES));
    doc.add(new TextField("title", "? ?? ? ?",
            Field.Store.YES));
    writer.addDocument(doc);

    doc = new Document();
    doc.add(new StringField("number", "3", Field.Store.YES));
    doc.add(new TextField("title", "? ??", Field.Store.YES));
    writer.addDocument(doc);
    writer.close();
    //~

    //Query the index
    String queryStr = "";
    Query query = new QueryParser("title", analyzer).parse(queryStr);

    int hitsPerPage = 5;
    IndexReader reader = DirectoryReader.open(index);
    IndexSearcher searcher = new IndexSearcher(reader);
    TopDocs docs = searcher.search(query, hitsPerPage, Sort.INDEXORDER);

    ScoreDoc[] hits = docs.scoreDocs;
    //~

    //Print results
    /*
    System.out.println("Found " + hits.length + " hits:");
    for (ScoreDoc hit : hits) {
       int docId = hit.doc;
       Document d = searcher.doc(docId);
       System.out.printf("\t(%s): %s\n", d.get("number"), d.get("title"));
    }
    */
    //~

}

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From source file:com.github.s4ke.moar.lucene.query.test.BaseLuceneTest.java

License:Open Source License

public void assertHits(Query query, int hitCount) throws IOException {
    try (IndexReader ir = DirectoryReader.open(d)) {
        IndexSearcher searcher = new IndexSearcher(ir);
        TopDocs td = searcher.search(query, 10);
        assertEquals("hitCount didn't match expected hit count", hitCount, td.totalHits);
    }/*  ww  w . j a va2s. com*/
}

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From source file:com.github.s4ke.moar.lucene.query.test.MoarQueryPerfTest.java

License:Open Source License

@Test
public void testComparison() throws IOException {
    this.setupComparisonData();

    try (IndexReader ir = DirectoryReader.open(d)) {
        IndexSearcher is = new IndexSearcher(ir);
        Perf perf = new Perf(true);

        for (int i = 0; i < 1000; ++i) {
            String wordOfChoice = WORDS.get(this.random.nextInt(WORDS.size()));
            wordOfChoice = wordOfChoice.substring(0, this.random.nextInt(wordOfChoice.length() - 1) + 1);
            wordOfChoice += ".*";
            System.out.println(wordOfChoice);
            {/*w ww  . j av  a 2s .  c  om*/
                perf.pre();
                MoaPattern pattern = MoaPattern.compile(wordOfChoice);
                MoarQuery tq = new MoarQuery("tag", pattern);

                TopDocs td = is.search(tq, 10);
                System.out.println(td.totalHits + " moar query hits");
                perf.after();
                perf.report("searching with moar");
            }

            {
                RegexpQuery regexpQuery = new RegexpQuery(new Term("tag", wordOfChoice));
                perf.pre();
                TopDocs td = is.search(regexpQuery, 10);
                System.out.println(td.totalHits + " regexp query hits");
                perf.after();
                perf.report("searching with regexp");
            }
        }
    }
}

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From source file:com.github.tteofili.apacheconeu14.oak.search.nls.IndexUtils.java

License:Apache License

public static IndexSearcher getSearcher() {
    if (directory == null) {
        directory = openDir();/*from w w w.  j av  a2s.c om*/
    }
    try {
        return new IndexSearcher(DirectoryReader.open(directory));
    } catch (Exception e) {
        log.error("could not create index searcher", e);
    }
    return null;
}

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