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:GUIFrame.java

public Directory InitializeIndex(Directory Index, PorterStemAnalyzer Analyzer) throws IOException {
    // Create the index
    Index = new RAMDirectory();
    IndexWriterConfig myConfig = new IndexWriterConfig(Version.LATEST, Analyzer);
    try (IndexWriter indoWriter = new IndexWriter(Index, myConfig)) {
        BufferedReader buffR = new BufferedReader(new FileReader("npl\\doc-text"));
        String currLine;/*from   www . j a va 2 s.c o m*/
        StringBuilder idDoc = new StringBuilder();
        StringBuilder sumDoc = new StringBuilder();
        currLine = buffR.readLine();

        while (currLine != null) {
            if (currLine.matches(".*\\d+.*")) { // Check if current line contains a document's id
                // Capture the document's id and summary
                idDoc.append(currLine);
                currLine = buffR.readLine();

                // While the reader holds line of summary
                while (!(currLine.contains("/"))) {
                    sumDoc.append(currLine).append(" ");
                    currLine = buffR.readLine();
                }

                // Add the new document to the index
                AddDocument(indoWriter, idDoc.toString(), sumDoc.toString());

                //System.out.println(idDoc.toString());
                //System.out.println(sumDoc.toString());

                // Clear the string builders
                idDoc.delete(0, idDoc.length());
                sumDoc.delete(0, sumDoc.length());

                // Continue to next line
                currLine = buffR.readLine();
            } else {
                // Continue to next line
                currLine = buffR.readLine();
            }
        }

    }

    return Index;
}

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From source file:MyServlet.java

public void init() throws ServletException {
    try {//from ww w .  j a va2  s  .  c  om
        //   Specify the analyzer for tokenizing text.
        //   The same analyzer should be used for indexing and searching
        analyzer = new StandardAnalyzer();
        //   Code to create the index
        index = new RAMDirectory();
        config = new IndexWriterConfig(analyzer);
        w = new IndexWriter(index, config);
        addDoc(w, " Software Engineering 2", "CMPE 133", "Mon.", "Computer Engineering");
        addDoc(w, " Software Engineering 1", "CMPE 131", "Mon.", "Computer Engineering");
        addDoc(w, " Object Oriented Design", "CS 151", "Mon.", "Computer Science");
        addDoc(w, " Advance Data Structures with Java ", "CS 146:", "Mon.", "Computer Science");
        addDoc(w, " System Security with Java", "CS 166:", "Mon.", "Computer Science");
        addDoc(w, "Liner math", "ME 123", "Mon.", "Math");
        w.close();
        log = new searchHistory();
        for (int i = 1; i <= 10; i++) {
            Student std = new Student();
            std.setUserName("std" + i);
            std.setPassword("123");
            stds.add(std);
            Teacher tch = new Teacher();
            tch.setUserName("tch" + i);
            tch.setPassword("123");
            tchs.add(tch);
        }
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }
    System.out.println("init");

}

---

From source file:DocIndexer.java

License:Apache License

private RAMDirectory index() throws IOException, UnsupportedEncodingException, FileNotFoundException {
    RAMDirectory directory = new RAMDirectory();
    IndexWriterConfig config = new IndexWriterConfig(new StandardAnalyzer(CharArraySet.EMPTY_SET));
    config.setOpenMode(OpenMode.CREATE);
    config.setCommitOnClose(true);//from   ww w .  j a  va2 s. c o m
    try (IndexWriter iwriter = new IndexWriter(directory, config)) {
        for (String inputFile : inputFiles) {
            File file = new File(inputFile);
            if (file.length() == 0) {
                continue;
            }

            String title;
            try (BufferedReader titleReader = new BufferedReader(
                    new InputStreamReader(new FileInputStream(file), "UTF-8"))) {
                title = titleReader.readLine();
                if (title != null && title.startsWith("[[")) {
                    // Generally the first line of the txt is the title. In a few cases the
                    // first line is a "[[tag]]" and the second line is the title.
                    title = titleReader.readLine();
                }
            }
            Matcher matcher = SECTION_HEADER.matcher(title);
            if (matcher.matches()) {
                title = matcher.group(1);
            }

            String outputFile = AsciiDoctor.mapInFileToOutFile(inputFile, inExt, outExt);
            try (FileReader reader = new FileReader(file)) {
                Document doc = new Document();
                doc.add(new TextField(Constants.DOC_FIELD, reader));
                doc.add(new StringField(Constants.URL_FIELD, prefix + outputFile, Field.Store.YES));
                doc.add(new TextField(Constants.TITLE_FIELD, title, Field.Store.YES));
                iwriter.addDocument(doc);
            }
        }
    }
    return directory;
}

---

From source file:action.indexing.Fragments.java

License:Apache License

public void ramDirExample() throws Exception {
    Analyzer analyzer = new WhitespaceAnalyzer();
    // START//from  w w w.  j  a  va2  s.c  om
    Directory ramDir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(ramDir, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);
    // END
}

---

From source file:action.indexing.Fragments.java

License:Apache License

public void docBoostMethod() throws IOException {

    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(Version.LUCENE_30),
            IndexWriter.MaxFieldLength.UNLIMITED);

    // START/*  ww w  .j  ava2s. c  o  m*/
    Document doc = new Document();
    String senderEmail = getSenderEmail();
    String senderName = getSenderName();
    String subject = getSubject();
    String body = getBody();
    doc.add(new Field("senderEmail", senderEmail, Field.Store.YES, Field.Index.NOT_ANALYZED));
    doc.add(new Field("senderName", senderName, Field.Store.YES, Field.Index.ANALYZED));
    doc.add(new Field("subject", subject, Field.Store.YES, Field.Index.ANALYZED));
    doc.add(new Field("body", body, Field.Store.NO, Field.Index.ANALYZED));
    String lowerDomain = getSenderDomain().toLowerCase();
    if (isImportant(lowerDomain)) {
        doc.setBoost(1.5F); //1
    } else if (isUnimportant(lowerDomain)) {
        doc.setBoost(0.1F); //2 
    }
    writer.addDocument(doc);
    // END
    writer.close();

    /*
      #1 Good domain boost factor: 1.5
      #2 Bad domain boost factor: 0.1
    */
}

---

From source file:action.indexing.IndexingTest.java

License:Apache License

protected void setUp() throws Exception { //1
    directory = new RAMDirectory();

    IndexWriter writer = getWriter(); //2

    for (int i = 0; i < ids.length; i++) { //3
        Document doc = new Document();
        doc.add(new Field("id", ids[i], Field.Store.YES, Field.Index.NOT_ANALYZED));
        doc.add(new Field("country", unindexed[i], Field.Store.YES, Field.Index.NO));
        doc.add(new Field("contents", unstored[i], Field.Store.NO, Field.Index.ANALYZED));
        doc.add(new Field("city", text[i], Field.Store.YES, Field.Index.ANALYZED));
        writer.addDocument(doc);//from ww  w  .j  a  v  a  2s  .co  m
    }
    writer.close();
}

---

From source file:action.indexing.VerboseIndexing.java

License:Apache License

private void index() throws IOException {

    Directory dir = new RAMDirectory();

    IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);

    writer.setInfoStream(System.out);

    for (int i = 0; i < 100; i++) {
        Document doc = new Document();
        doc.add(new Field("keyword", "goober", Field.Store.YES, Field.Index.NOT_ANALYZED));
        writer.addDocument(doc);//from  w  ww  .j av  a  2 s .  c o  m
    }
    writer.optimize();
    writer.close();
}

---

From source file:analysis.SynonymAnalyzerTest.java

License:Apache License

public void setUp() throws Exception {
    RAMDirectory directory = new RAMDirectory();

    IndexWriter writer = new IndexWriter(directory, synonymAnalyzer, //#1  
            IndexWriter.MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", Field.Store.YES,
            Field.Index.ANALYZED)); //#2
    writer.addDocument(doc);// w w  w  . j av a2  s .  com

    writer.close();

    searcher = new IndexSearcher(directory, true);
}

---

From source file:aos.lucene.analysis.codec.MetaphoneAnalyzerTest.java

License:Apache License

public void testKoolKat() throws Exception {

    RAMDirectory directory = new RAMDirectory();
    Analyzer analyzer = new MetaphoneReplacementAnalyzer();

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

    Document doc = new Document();
    doc.add(new Field("contents", "cool cat", Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);/*from   www  .  j a  va  2  s.co m*/
    writer.close();

    IndexSearcher searcher = new IndexSearcher(directory);

    Query query = new QueryParser(Version.LUCENE_46, "contents", analyzer).parse("kool kat");

    TopDocs hits = searcher.search(query, 1);
    assertEquals(1, hits.totalHits);
    int docID = hits.scoreDocs[0].doc;
    Document storedDoc = searcher.doc(docID);
    assertEquals("cool cat", storedDoc.get("contents"));

    searcher.close();
}

---

From source file:aos.lucene.analysis.keyword.KeywordAnalyzerTest.java

License:Apache License

public void setUp() throws Exception {
    Directory directory = new RAMDirectory();

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

    Document doc = new Document();
    doc.add(new Field("partnum", "Q36", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS)); //A
    doc.add(new Field("description", "Illidium Space Modulator", Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);/*from w ww  .  j a  v a2  s. c  om*/

    writer.close();

    searcher = new IndexSearcher(directory);
}

---

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