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

Introduction

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

Prototype

@Override
public void close()

Source Link

Document

Closes the store to future operations, releasing associated memory.

Usage

From source file:simseer.cosine.CosineSimilarity.java

License:Open Source License

/**
 * Calculates the cosine similarity between two documents.
 * @param d1 the first document//from  w ww.  ja va  2s . c  o m
 * @param d2 the second document
 * @return the cosine similarity
 * @throws IOException
 */
private double getCosineSimilarity(String d1, String d2) throws IOException {

    RAMDirectory ramDir = new RAMDirectory();

    //Index the full text of both documents
    IndexWriter writer = new IndexWriter(ramDir, new StandardAnalyzer(Version.LUCENE_36), true,
            IndexWriter.MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    doc.add(new Field("text", FileUtils.readFileToString(new File(d1), "UTF-8"), Field.Store.NO,
            Field.Index.ANALYZED, Field.TermVector.YES));
    writer.addDocument(doc);
    doc = new Document();
    doc.add(new Field("text", FileUtils.readFileToString(new File(d2), "UTF-8"), Field.Store.NO,
            Field.Index.ANALYZED, Field.TermVector.YES));
    writer.addDocument(doc);
    writer.close();

    //Build a term vector for each document
    IndexReader RAMreader = IndexReader.open(ramDir);
    TermFreqVector doc1FreqVector = RAMreader.getTermFreqVector(0, "text");
    TermFreqVector doc2FreqVector = RAMreader.getTermFreqVector(1, "text");
    RAMreader.close();
    ramDir.close();

    //Return the cosine similarity of the term vectors
    return cosineSimilarity(doc1FreqVector, doc2FreqVector);

}

From source file:spell.SpellIndex.java

License:Apache License

/**
 * Index a Dictionary from either a file or another Lucene index.
 * @param dict the dictionary to index//w  w w  .j  a v a 2 s  .  co  m
 * @throws IOException
 */
public void indexDictionary(Dictionary dict) throws IOException {
    RAMDirectory ramdir = new RAMDirectory();
    IndexWriter ramwriter = new IndexWriter(ramdir, s_analyzer, true);
    ramwriter.mergeFactor = 10000;

    Iterator iter = dict.getWordsIterator();
    while (iter.hasNext()) {
        String word = (String) iter.next();

        // Don't add existing words
        if (this.exist(word)) {
            // if the word already exist in the gramindex
            continue;
        }

        // add the word and index it if it's long enough
        Document doc = createDocument(word);
        ramwriter.addDocument(doc);
    }

    ramwriter.optimize();

    IndexReader.unlock(spellindex);

    IndexWriter writer = new IndexWriter(spellindex, s_analyzer, false);

    writer.addIndexes(new Directory[] { ramdir });
    writer.optimize();
    writer.close();

    ramwriter.close();
    ramdir.close();
}

From source file:test.ad.date.Datetest.java

License:Open Source License

public static void main(String[] args) throws Exception {
    RAMDirectory dir = new RAMDirectory();
    //      FSDirectory dir =  FSDirectory.open(new File("lt/"));
    IndexWriter writer = new IndexWriter(dir, new KeywordAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);

    List<Day> days = new ArrayList<Day>();
    days.add(Day.All);// w w w.jav  a  2s  .  co m
    List<State> states = new ArrayList<State>();
    states.add(State.All);
    writer.addDocument(getDoc("b1", "0600", "0800", "all", "all", days, states));
    writer.addDocument(getDoc("b2", "all", "all", "all", "all", days, states));
    writer.addDocument(getDoc("b3", "0600", "0700", "all", "all", days, states));
    writer.addDocument(getDoc("b4", "0500", "0700", "all", "all", days, states));
    writer.addDocument(getDoc("b5", "0630", "0700", "all", "all", days, states));
    writer.addDocument(getDoc("b6", "0800", "0900", "all", "all", days, states));

    writer.optimize();
    writer.close();

    searcher = new IndexSearcher(dir);

    System.out.println("\n6Uhr");
    searchTest("0600", "20101221", Day.All, 4);

    System.out.println("\n6:30Uhr");
    searchTest("0630", null, Day.All, 5);

    System.out.println("\n5Uhr");
    searchTest("0500", null, Day.All, 2);

    System.out.println("\n8:30Uhr");
    searchTest("0830", null, Day.All, 2);

    dir.close();
}