Example usage for org.apache.lucene.index IndexReader close

List of usage examples for org.apache.lucene.index IndexReader close

  1. HOME
  2. Java
  3. org.apache.lucene
  4. org.apache.lucene.index.*
  5. IndexReader
  6. close

Introduction

In this page you can find the example usage for org.apache.lucene.index IndexReader close.

Prototype

@Override
public final synchronized void close() throws IOException

Source Link

Document

Closes files associated with this index.

Usage

From source file:aos.lucene.search.msc.BasicSearchingTest.java

License:Apache License

public void testTerm() throws Exception {

    Directory dir = FSDirectory.open(new File("target/index"));
    IndexReader reader = DirectoryReader.open(dir);
    IndexSearcher searcher = new IndexSearcher(reader);

    Term t = new Term("subject", "ant");
    Query query = new TermQuery(t);
    TopDocs docs = searcher.search(query, 10);
    assertEquals("Ant in Action", 1, docs.totalHits);

    t = new Term("subject", "junit");
    docs = searcher.search(new TermQuery(t), 10);
    assertEquals("Ant in Action, " + "JUnit in Action, Second Edition", 2, docs.totalHits);

    reader.close();
    dir.close();//  w w  w  . j a v a  2  s . c  o  m
}

From source file:aos.lucene.search.msc.Fragments.java

License:Apache License

public void nrtReader() throws Exception {
    IndexReader reader = null;
    IndexSearcher searcher;//from   w  w  w  .ja va2s .c  om

    IndexReader newReader = reader.reopen();
    if (reader != newReader) {
        reader.close();
        reader = newReader;
        searcher = new IndexSearcher(reader);
    }

}

From source file:aos.lucene.search.msc.NearRealTimeTest.java

License:Apache License

public void testNearRealTime() throws Exception {
    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(Version.LUCENE_46),
            IndexWriter.MaxFieldLength.UNLIMITED);
    for (int i = 0; i < 10; i++) {
        Document doc = new Document();
        doc.add(new Field("id", "" + i, Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS));
        doc.add(new Field("text", "aaa", Field.Store.NO, Field.Index.ANALYZED));
        writer.addDocument(doc);// www  . j  a  v  a2s.  c om
    }
    IndexReader reader = writer.getReader();
    IndexSearcher searcher = new IndexSearcher(reader);

    Query query = new TermQuery(new Term("text", "aaa"));
    TopDocs docs = searcher.search(query, 1);
    assertEquals(10, docs.totalHits);

    writer.deleteDocuments(new Term("id", "7"));

    Document doc = new Document();
    doc.add(new Field("id", "11", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS));
    doc.add(new Field("text", "bbb", Field.Store.NO, Field.Index.ANALYZED));
    writer.addDocument(doc);

    IndexReader newReader = reader.reopen();
    assertFalse(reader == newReader);
    reader.close();
    searcher = new IndexSearcher(newReader);

    TopDocs hits = searcher.search(query, 10);
    assertEquals(9, hits.totalHits);

    query = new TermQuery(new Term("text", "bbb"));
    hits = searcher.search(query, 1);
    assertEquals(1, hits.totalHits);

    newReader.close();
    writer.close();
}

From source file:aos.lucene.tools.BooksMoreLikeThis.java

License:Apache License

public static void main(String[] args) throws Throwable {

    String indexDir = System.getProperty("index.dir");
    FSDirectory directory = FSDirectory.open(new File(indexDir));
    IndexReader reader = DirectoryReader.open(directory);

    IndexSearcher searcher = new IndexSearcher(reader);

    int numDocs = reader.maxDoc();

    MoreLikeThis mlt = new MoreLikeThis(reader);
    mlt.setFieldNames(new String[] { "title", "author" });
    mlt.setMinTermFreq(1);//from w  w w .j ava2s.  co  m
    mlt.setMinDocFreq(1);

    for (int docID = 0; docID < numDocs; docID++) {
        LOGGER.info();
        Document doc = reader.document(docID);
        LOGGER.info(doc.get("title"));

        Query query = mlt.like(docID);
        LOGGER.info("  query=" + query);

        TopDocs similarDocs = searcher.search(query, 10);
        if (similarDocs.totalHits == 0)
            LOGGER.info("  None like this");
        for (int i = 0; i < similarDocs.scoreDocs.length; i++) {
            if (similarDocs.scoreDocs[i].doc != docID) {
                doc = reader.document(similarDocs.scoreDocs[i].doc);
                LOGGER.info("  -> " + doc.getField("title").stringValue());
            }
        }
    }

    reader.close();
    directory.close();
}

From source file:aos.lucene.tools.CreateSpellCheckerIndex.java

License:Apache License

public static void main(String[] args) throws IOException {

    if (args.length != 3) {
        LOGGER.info("Usage: java lia.tools.SpellCheckerTest SpellCheckerIndexDir IndexDir IndexField");
        System.exit(1);/*from  ww w  . ja va2 s  .  c om*/
    }

    String spellCheckDir = args[0];
    String indexDir = args[1];
    String indexField = args[2];

    LOGGER.info("Now build SpellChecker index...");
    Directory dir = FSDirectory.open(new File(spellCheckDir));
    SpellChecker spell = new SpellChecker(dir); //#A
    long startTime = System.currentTimeMillis();

    Directory dir2 = FSDirectory.open(new File(indexDir));
    IndexReader r = DirectoryReader.open(dir2); //#B
    try {
        spell.indexDictionary(new LuceneDictionary(r, indexField)); //#C
    } finally {
        r.close();
    }
    dir.close();
    dir2.close();
    long endTime = System.currentTimeMillis();
    LOGGER.info("  took " + (endTime - startTime) + " milliseconds");
}

From source file:aplicacion.sistema.indexer.test.DeleteFiles.java

License:Apache License

/** Deletes documents from an index that do not contain a term. */
public static void main(String[] args) {
    String usage = "java org.apache.lucene.demo.DeleteFiles <unique_term>";
    if (args.length == 0) {
        System.err.println("Usage: " + usage);
        System.exit(1);//ww  w. ja  va 2  s  .  c om
    }
    try {
        Directory directory = FSDirectory.open(new File("index"));
        IndexReader reader = IndexReader.open(directory, false); // we don't want read-only because we are about to delete

        Term term = new Term("path", args[0]);
        int deleted = reader.deleteDocuments(term);

        System.out.println("deleted " + deleted + " documents containing " + term);

        // one can also delete documents by their internal id:
        /*
        for (int i = 0; i < reader.maxDoc(); i++) {
          System.out.println("Deleting document with id " + i);
          reader.delete(i);
        }*/

        reader.close();
        directory.close();

    } catch (Exception e) {
        System.out.println(" caught a " + e.getClass() + "\n with message: " + e.getMessage());
    }
}

From source file:aplicacion.sistema.indexer.test.SearchFiles.java

License:Apache License

/** Simple command-line based search demo. */
public static void main(String[] args) throws Exception {
    String usage = "Usage:\tjava org.apache.lucene.demo.SearchFiles [-index dir] [-field f] [-repeat n] [-queries file] [-raw] [-norms field] [-paging hitsPerPage]";
    usage += "\n\tSpecify 'false' for hitsPerPage to use streaming instead of paging search.";
    if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) {
        System.out.println(usage);
        System.exit(0);/*from   w  ww . j  av a  2s . c o  m*/
    }

    String index = "e:/index";
    String field = "contents";
    String queries = null;
    int repeat = 0;
    boolean raw = false;
    String normsField = null;
    boolean paging = true;
    int hitsPerPage = 10;

    for (int i = 0; i < args.length; i++) {
        if ("-index".equals(args[i])) {
            index = args[i + 1];
            i++;
        } else if ("-field".equals(args[i])) {
            field = args[i + 1];
            i++;
        } else if ("-queries".equals(args[i])) {
            queries = args[i + 1];
            i++;
        } else if ("-repeat".equals(args[i])) {
            repeat = Integer.parseInt(args[i + 1]);
            i++;
        } else if ("-raw".equals(args[i])) {
            raw = true;
        } else if ("-norms".equals(args[i])) {
            normsField = args[i + 1];
            i++;
        } else if ("-paging".equals(args[i])) {
            if (args[i + 1].equals("false")) {
                paging = false;
            } else {
                hitsPerPage = Integer.parseInt(args[i + 1]);
                if (hitsPerPage == 0) {
                    paging = false;
                }
            }
            i++;
        }
    }

    IndexReader reader = IndexReader.open(FSDirectory.open(new File(index)), true); // only searching, so read-only=true

    if (normsField != null)
        reader = new OneNormsReader(reader, normsField);

    Searcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT);

    BufferedReader in = null;
    if (queries != null) {
        in = new BufferedReader(new FileReader(queries));
    } else {
        in = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
    }
    QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, field, analyzer);
    while (true) {
        if (queries == null) // prompt the user
            System.out.println("Enter query: ");

        String line = in.readLine();

        if (line == null || line.length() == -1)
            break;

        line = line.trim();
        if (line.length() == 0)
            break;

        Query query = parser.parse(line);
        System.out.println("Searching for: " + query.toString(field));

        if (repeat > 0) { // repeat & time as benchmark
            Date start = new Date();
            for (int i = 0; i < repeat; i++) {
                searcher.search(query, null, 100);
            }
            Date end = new Date();
            System.out.println("Time: " + (end.getTime() - start.getTime()) + "ms");
        }

        if (paging) {
            doPagingSearch(in, searcher, query, hitsPerPage, raw, queries == null);
        } else {
            doStreamingSearch(searcher, query);
        }
    }
    reader.close();
}

From source file:app.finder.topicsource.service.SearchFiles.java

License:Apache License

public List<TopicSource> getTopicSources(String queryString) throws IOException, ParseException {
    String field = "contents";
    String queries = null;/*from   w ww .  jav  a  2  s .  c  o m*/
    int repeat = 0;
    boolean raw = false;

    int hitsPerPage = SEARCH_MAX_SIZE; // 100;
    IndexReader reader = DirectoryReader.open(FSDirectory.open(Paths.get(indexDir)));
    IndexSearcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer();

    BufferedReader in = null;
    QueryParser parser = new QueryParser(field, analyzer);

    Query query = parser.parse(queryString);

    //System.out.println("Searching for: " + query.toString(field));
    searcher.search(query, null, SEARCH_MAX_SIZE);

    List<String> list = doSearch(in, searcher, query, hitsPerPage, raw, queries == null && queryString == null);

    reader.close();

    List<TopicSource> topicSourceList = new ArrayList<TopicSource>();
    TopicSource topicSource = null;
    int counter = 0;
    for (String fileName : list) {
        topicSource = new TopicSource();
        File file = new File(fileName);

        topicSource.setFileName("" + (++counter) + ". " + file.getName());
        topicSource.setPath(file.getCanonicalPath());
        topicSource.setText(readFile(file));
        topicSourceList.add(topicSource);
    }

    return topicSourceList;
}

From source file:app.SearchFiles.java

License:Apache License

/** Simple command-line based search demo. */
public static void main(String[] args) throws Exception {
    String usage = "Usage:\tjava org.apache.lucene.demo.SearchFiles [-index dir] [-field f] [-repeat n] [-queries file] [-query string] [-raw] [-paging hitsPerPage]\n\nSee http://lucene.apache.org/core/4_1_0/demo/ for details.";
    if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) {
        System.out.println(usage);
        System.exit(0);/*from  ww w  .j a v  a  2s .  co m*/
    }

    String index = "index";
    String field = "contents";
    String queries = null;
    int repeat = 0;
    boolean raw = true;
    String queryString = null;
    int hitsPerPage = 10;

    for (int i = 0; i < args.length; i++) {
        if ("-index".equals(args[i])) {
            index = args[i + 1];
            i++;
        } else if ("-field".equals(args[i])) {
            field = args[i + 1];
            i++;
        } else if ("-queries".equals(args[i])) {
            queries = args[i + 1];
            i++;
        } else if ("-query".equals(args[i])) {
            queryString = args[i + 1];
            i++;
        } else if ("-repeat".equals(args[i])) {
            repeat = Integer.parseInt(args[i + 1]);
            i++;
        } else if ("-raw".equals(args[i])) {
            raw = true;
        } else if ("-paging".equals(args[i])) {
            hitsPerPage = Integer.parseInt(args[i + 1]);
            if (hitsPerPage <= 0) {
                System.err.println("There must be at least 1 hit per page.");
                System.exit(1);
            }
            i++;
        }
    }

    IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_40);

    BufferedReader in = null;
    if (queries != null) {
        in = new BufferedReader(new InputStreamReader(new FileInputStream(queries), "UTF-8"));
    } else {
        in = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
    }
    QueryParser parser = new QueryParser(Version.LUCENE_40, field, analyzer);
    while (true) {
        if (queries == null && queryString == null) { // prompt the user
            System.out.println("Enter query: ");
        }

        String line = queryString != null ? queryString : in.readLine();

        if (line == null || line.length() == -1) {
            break;
        }

        line = line.trim();
        if (line.length() == 0) {
            break;
        }

        Query query = parser.parse(line);
        System.out.println("Searching for: " + query.toString(field));

        if (repeat > 0) { // repeat & time as benchmark
            Date start = new Date();
            for (int i = 0; i < repeat; i++) {
                searcher.search(query, null, 100);
            }
            Date end = new Date();
            System.out.println("Time: " + (end.getTime() - start.getTime()) + "ms");
        }

        doPagingSearch(in, searcher, query, hitsPerPage, raw, queries == null && queryString == null);

        if (queryString != null) {
            break;
        }
    }
    reader.close();
}

From source file:Application.mediaIndexer.java

public static void SearchFiles(String index, String queryString, String selected, TextArea results)
        throws IOException, ParseException {
    IndexReader reader = DirectoryReader.open(FSDirectory.open(Paths.get(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer();
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in, StandardCharsets.UTF_8));
    QueryParser parser = new QueryParser(selected, analyzer);
    String line = queryString != null ? queryString : in.readLine();
    line = line.trim();//from ww w .j a v a2  s  .  c om
    Query query = parser.parse(line);
    int maxHits = 100;
    TopDocs docsResults = searcher.search(query, maxHits);
    ScoreDoc[] hits = docsResults.scoreDocs;
    for (int i = 0; i < hits.length; i++) {
        Document doc = searcher.doc(hits[i].doc);
        results.appendText("Title: " + doc.get("title") + "\n");
        results.appendText("Artists: " + doc.get("xmpDM:artist") + "\n");
        results.appendText("Genre: " + doc.get("xmpDM:genre") + "\n");
        results.appendText("Year: " + doc.get("xmpDM:releaseDate") + "\n");
    }
    // Playlist.
    playlist.clear();
    for (int i = 0; i < hits.length; i++) {
        Document doc = searcher.doc(hits[i].doc);
        String path = doc.get("path");
        if (path != null)
            playlist.add(new File(path));
    }
    reader.close();
}