Example usage for org.apache.lucene.store RAMDirectory RAMDirectory

Introduction

In this page you can find the example usage for org.apache.lucene.store RAMDirectory RAMDirectory.

Prototype

public RAMDirectory() 

Source Link

Document

Constructs an empty Directory .

Usage

From source file:com.leavesfly.lia.analysis.UsingAnalyzersExample.java

License:Apache License

/**
 * This method doesn't do anything, except compile correctly.
 * This is used to show snippets of how Analyzers are used.
 *///from w  ww  . j av  a 2 s .c o  m
public void someMethod() throws IOException, ParseException {
    RAMDirectory directory = new RAMDirectory();

    Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);
    IndexWriter writer = new IndexWriter(directory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);

    Document doc = new Document();
    doc.add(new Field("title", "This is the title", Field.Store.YES, Field.Index.ANALYZED));
    doc.add(new Field("contents", "...document contents...", Field.Store.NO, Field.Index.ANALYZED));
    writer.addDocument(doc);

    writer.addDocument(doc, analyzer);

    String expression = "some query";

    Query query = new QueryParser(Version.LUCENE_30, "contents", analyzer).parse(expression);

    QueryParser parser = new QueryParser(Version.LUCENE_30, "contents", analyzer);
    query = parser.parse(expression);
}

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From source file:com.leavesfly.lia.extsearch.sorting.DistanceSortingTest.java

License:Apache License

protected void setUp() throws Exception {
    directory = new RAMDirectory();
    IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(),
            IndexWriter.MaxFieldLength.UNLIMITED);
    addPoint(writer, "El Charro", "restaurant", 1, 2);
    addPoint(writer, "Cafe Poca Cosa", "restaurant", 5, 9);
    addPoint(writer, "Los Betos", "restaurant", 9, 6);
    addPoint(writer, "Nico's Taco Shop", "restaurant", 3, 8);

    writer.close();//from  w  w w  . j  a  va 2s.c o m

    searcher = new IndexSearcher(directory);

    query = new TermQuery(new Term("type", "restaurant"));
}

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From source file:com.leavesfly.lia.searching.NearRealTimeTest.java

License:Apache License

public void testNearRealTime() throws Exception {
    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(Version.LUCENE_30),
            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);/*from  w  ww  .  ja  va  2s . c  om*/
    }
    IndexReader reader = writer.getReader(); // #1
    IndexSearcher searcher = new IndexSearcher(reader); // #A

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

    writer.deleteDocuments(new Term("id", "7")); // #2

    Document doc = new Document(); // #3
    doc.add(new Field("id", // #3
            "11", // #3
            Field.Store.NO, // #3
            Field.Index.NOT_ANALYZED_NO_NORMS)); // #3
    doc.add(new Field("text", // #3
            "bbb", // #3
            Field.Store.NO, // #3
            Field.Index.ANALYZED)); // #3
    writer.addDocument(doc); // #3

    IndexReader newReader = reader.reopen(); // #4
    assertFalse(reader == newReader); // #5
    reader.close(); // #6
    searcher = new IndexSearcher(newReader);

    TopDocs hits = searcher.search(query, 10); // #7
    assertEquals(9, hits.totalHits); // #7

    query = new TermQuery(new Term("text", "bbb")); // #8
    hits = searcher.search(query, 1); // #8
    assertEquals(1, hits.totalHits); // #8

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

---

From source file:com.leavesfly.lia.searching.PhraseQueryTest.java

License:Apache License

protected void setUp() throws IOException {
    dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    doc.add(new Field("field", // 1
            "the quick brown fox jumped over the lazy dog", // 1
            Field.Store.YES, // 1
            Field.Index.ANALYZED)); // 1
    writer.addDocument(doc);/*w w w  .  j  a  va 2s .  co m*/
    writer.close();

    searcher = new IndexSearcher(dir);
}

---

From source file:com.leavesfly.lia.tool.ChainedFilterTest.java

License:Apache License

public void setUp() throws Exception {
    directory = new RAMDirectory();
    IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(),
            IndexWriter.MaxFieldLength.UNLIMITED);

    Calendar cal = Calendar.getInstance();
    cal.set(2009, 1, 1, 0, 0); // A

    for (int i = 0; i < MAX; i++) {
        Document doc = new Document();
        doc.add(new Field("key", "" + (i + 1), Field.Store.YES, Field.Index.NOT_ANALYZED));
        doc.add(new Field("owner", (i < MAX / 2) ? "bob" : "sue", Field.Store.YES, Field.Index.NOT_ANALYZED));
        doc.add(new Field("date", DateTools.timeToString(cal.getTimeInMillis(), DateTools.Resolution.DAY),
                Field.Store.YES, Field.Index.NOT_ANALYZED));
        writer.addDocument(doc);/* w w  w.  jav a 2  s  . co m*/

        cal.add(Calendar.DATE, 1);
    }

    writer.close();

    searcher = new IndexSearcher(directory);

    BooleanQuery bq = new BooleanQuery(); // B
    bq.add(new TermQuery(new Term("owner", "bob")), // B
            BooleanClause.Occur.SHOULD); // B
    bq.add(new TermQuery(new Term("owner", "sue")), // B
            BooleanClause.Occur.SHOULD); // B
    query = bq;

    cal.set(2099, 1, 1, 0, 0);
    dateFilter = TermRangeFilter.Less("date", // C
            DateTools.timeToString( // C
                    cal.getTimeInMillis(), // C
                    DateTools.Resolution.DAY));// C

    bobFilter = new CachingWrapperFilter( // D
            new QueryWrapperFilter( // D
                    new TermQuery(new Term("owner", "bob")))); // D

    sueFilter = new CachingWrapperFilter( // E
            new QueryWrapperFilter( // E
                    new TermQuery(new Term("owner", "sue")))); // E
}

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From source file:com.leavesfly.lia.tool.SpatialLuceneExample.java

License:Apache License

SpatialLuceneExample() throws IOException {
    directory = new RAMDirectory();
    writer = new IndexWriter(directory, new WhitespaceAnalyzer(), MaxFieldLength.UNLIMITED);
}

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From source file:com.liferay.portal.search.lucene.dump.DumpIndexDeletionPolicyTest.java

License:Open Source License

@Override
public void setUp() throws Exception {
    _sourceDirectory = new RAMDirectory();
    _dumpIndexDeletionPolicy = new DumpIndexDeletionPolicy();

    _indexWriter = new IndexWriter(_sourceDirectory, new StandardAnalyzer(Version.LUCENE_30),
            _dumpIndexDeletionPolicy, IndexWriter.MaxFieldLength.UNLIMITED);
}

---

From source file:com.liferay.portal.search.lucene.dump.DumpIndexDeletionPolicyTest.java

License:Open Source License

private Directory _dumpToTargetDirectory(IndexWriter indexWriter) throws Exception {

    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

    _dumpIndexDeletionPolicy.dump(byteArrayOutputStream, indexWriter, new ReentrantLock());

    byte[] bytes = byteArrayOutputStream.toByteArray();

    Directory targetDirectory = new RAMDirectory();

    IndexCommitSerializationUtil.deserializeIndex(new ByteArrayInputStream(bytes), targetDirectory);

    return targetDirectory;
}

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From source file:com.liferay.portal.search.lucene.IndexAccessorImpl.java

License:Open Source License

private Directory _getLuceneDirRam() {
    String path = _getPath();// www  .  j  a v  a 2s  . c o m

    Directory directory = _ramDirectories.get(path);

    if (directory == null) {
        directory = new RAMDirectory();

        _ramDirectories.put(path, directory);
    }

    return directory;
}

---

From source file:com.lin.studytest.lucene.IndexFiles.java

License:Apache License

/** Index all text files under a directory. */
public static void main(String[] args) {
    //      String usage = "java org.apache.lucene.demo.IndexFiles"
    //            + " [-index INDEX_PATH] [-docs DOCS_PATH] [-update]\n\n"
    //            + "This indexes the documents in DOCS_PATH, creating a Lucene index"
    //            + "in INDEX_PATH that can be searched with SearchFiles";
    String indexPath = "D:\\software\\lucene\\testdata\\indexpath";
    String docsPath = "D:\\software\\lucene\\testdata\\docpath";
    RAMDirectory ramDirectory = new RAMDirectory();

    boolean create = false;
    //      for(int i=0;i<args.length;i++) {
    //         if ("-index".equals(args[i])) {
    //            indexPath = args[i+1];
    //            i++;
    //         } else if ("-docs".equals(args[i])) {
    //            docsPath = args[i+1];
    //            i++;
    //         } else if ("-update".equals(args[i])) {
    //            create = false;
    //         }/* ww  w.  j av  a2  s  .c  o  m*/
    //      }

    //      if (docsPath == null) {
    //         System.err.println("Usage: " + usage);
    //         System.exit(1);
    //      }

    final Path docDir = Paths.get(docsPath);
    if (!Files.isReadable(docDir)) {
        System.out.println("Document directory '" + docDir.toAbsolutePath()
                + "' does not exist or is not readable, please check the path");
        System.exit(1);
    }

    Date start = new Date();
    try {
        System.out.println("Indexing to directory '" + indexPath + "'...");

        Directory dir = FSDirectory.open(Paths.get(indexPath));
        Analyzer analyzer = new SmartChineseAnalyzer();
        IndexWriterConfig iwc = new IndexWriterConfig(analyzer);

        if (create) {
            // Create a new index in the directory, removing any
            // previously indexed documents:
            iwc.setOpenMode(OpenMode.CREATE);
        } else {
            // Add new documents to an existing index:
            iwc.setOpenMode(OpenMode.CREATE_OR_APPEND);
        }

        // Optional: for better indexing performance, if you
        // are indexing many documents, increase the RAM
        // buffer.  But if you do this, increase the max heap
        // size to the JVM (eg add -Xmx512m or -Xmx1g):
        //
        // iwc.setRAMBufferSizeMB(256.0);

        IndexWriter writer = new IndexWriter(dir, iwc);
        indexDocs(writer, docDir);

        // NOTE: if you want to maximize search performance,
        // you can optionally call forceMerge here.  This can be
        // a terribly costly operation, so generally it's only
        // worth it when your index is relatively static (ie
        // you're done adding documents to it):
        //
        // writer.forceMerge(1);

        writer.close();

        Date end = new Date();
        System.out.println(end.getTime() - start.getTime() + " total milliseconds");

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

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