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, Map<String, String> readerAttributes)
        throws IOException 

Source Link

Document

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

Usage

From source file:api.reader.LuceneIndexReader.java

License:Open Source License

public boolean initializeIndexReader(IndexWriter writer) {
    try {/* w  ww .  ja  v a  2s . co  m*/
        READER = DirectoryReader.open(writer, true);
    } catch (IOException e) {
        READER = null;
        log.error("Failed to instantiate index reader from writer");
    }
    return isInitialized();
}

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From source file:at.ac.univie.mminf.luceneSKOS.queryparser.flexible.standard.SKOSStandardQueryParserTest.java

License:Apache License

@Test
public void queryParserSearch() throws IOException, QueryNodeException {

    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", TextField.TYPE_STORED));

    writer.addDocument(doc);/*from ww  w . jav  a  2s .  com*/

    searcher = new IndexSearcher(DirectoryReader.open(writer, false));

    Query query = new SKOSStandardQueryParser(skosAnalyzer).parse("\"fox jumps\"", "content");

    Assert.assertEquals(1, TestUtil.hitCount(searcher, query));

    Assert.assertEquals("content:\"fox (jumps hops leaps)\"", query.toString());
    Assert.assertEquals("org.apache.lucene.search.MultiPhraseQuery", query.getClass().getName());

    query = new StandardQueryParser(new StandardAnalyzer(matchVersion)).parse("\"fox jumps\"", "content");
    Assert.assertEquals(1, TestUtil.hitCount(searcher, query));

    Assert.assertEquals("content:\"fox jumps\"", query.toString());
    Assert.assertEquals("org.apache.lucene.search.PhraseQuery", query.getClass().getName());

}

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From source file:at.ac.univie.mminf.luceneSKOS.queryparser.flexible.standard.SKOSStandardQueryParserTest.java

License:Apache License

@Test
public void queryParserSearchWithBoosts() throws IOException, QueryNodeException {

    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", TextField.TYPE_STORED));

    writer.addDocument(doc);//ww w  .  jav  a 2  s . c om

    searcher = new IndexSearcher(DirectoryReader.open(writer, false));

    SKOSStandardQueryParser parser = new SKOSStandardQueryParser(skosAnalyzer);
    parser.setBoost(SKOSType.ALT, 0.5f);

    Query query = parser.parse("\"fox jumps\"", "content");

    Assert.assertEquals(1, TestUtil.hitCount(searcher, query));

    // boosts do not work in phrase queries
    Assert.assertEquals("content:\"fox (jumps hops leaps)\"", query.toString());
    Assert.assertEquals("org.apache.lucene.search.MultiPhraseQuery", query.getClass().getName());

    query = parser.parse("fox jumps", "content");

    Assert.assertEquals(1, TestUtil.hitCount(searcher, query));

    Assert.assertEquals("content:fox (content:jumps content:hops^0.5 content:leaps^0.5)", query.toString());
    Assert.assertEquals("org.apache.lucene.search.BooleanQuery", query.getClass().getName());

    query = new SKOSStandardQueryParser(new StandardAnalyzer(matchVersion)).parse("fox jumps", "content");
    Assert.assertEquals(1, TestUtil.hitCount(searcher, query));

    Assert.assertEquals("content:fox content:jumps", query.toString());
    Assert.assertEquals("org.apache.lucene.search.BooleanQuery", query.getClass().getName());

}

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From source file:at.ac.univie.mminf.luceneSKOS.test.SKOSLabelFilterTest.java

License:Apache License

@Test
public void termQuerySearch() throws IOException {
    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", TextField.TYPE_STORED));
    writer.addDocument(doc);//  www  . j a  v  a 2 s  .  c  om
    searcher = new IndexSearcher(DirectoryReader.open(writer, false));
    TermQuery tq = new TermQuery(new Term("content", "hops"));
    assertEquals(1, searcher.search(tq, 1).totalHits);
}

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From source file:at.ac.univie.mminf.luceneSKOS.test.SKOSLabelFilterTest.java

License:Apache License

@Test
public void phraseQuerySearch() throws IOException {
    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", TextField.TYPE_STORED));
    writer.addDocument(doc);/*from www. ja v a  2s.  com*/
    searcher = new IndexSearcher(DirectoryReader.open(writer, false));
    PhraseQuery.Builder builder = new PhraseQuery.Builder();
    builder.add(new Term("content", "fox")).add(new Term("content", "hops"));
    assertEquals(1, searcher.search(builder.build(), 1).totalHits);
}

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From source file:at.ac.univie.mminf.luceneSKOS.test.SKOSLabelFilterTest.java

License:Apache License

@Test
public void queryParserSearch() throws IOException, QueryNodeException {
    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", TextField.TYPE_STORED));
    writer.addDocument(doc);/*from www. ja va2s .com*/
    searcher = new IndexSearcher(DirectoryReader.open(writer, false));
    Query query = new StandardQueryParser(skosAnalyzer).parse("\"fox jumps\"", "content");
    assertEquals(1, searcher.search(query, 1).totalHits);
    assertEquals("content:\"fox (jumps hops leaps)\"", query.toString());
    assertEquals("org.apache.lucene.search.MultiPhraseQuery", query.getClass().getName());
    query = new StandardQueryParser(new StandardAnalyzer()).parse("\"fox jumps\"", "content");
    assertEquals(1, searcher.search(query, 1).totalHits);
    assertEquals("content:\"fox jumps\"", query.toString());
    assertEquals("org.apache.lucene.search.PhraseQuery", query.getClass().getName());
}

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From source file:at.ac.univie.mminf.luceneSKOS.test.SKOSLabelFilterTest.java

License:Apache License

@Test
public void testTermQuery() throws IOException, QueryNodeException {
    Document doc = new Document();
    doc.add(new Field("content", "I work for the united nations", TextField.TYPE_STORED));
    writer.addDocument(doc);/*w ww  .ja v a2  s  . c  o m*/
    searcher = new IndexSearcher(DirectoryReader.open(writer, false));
    StandardQueryParser parser = new StandardQueryParser(new SimpleAnalyzer());
    Query query = parser.parse("united nations", "content");
    assertEquals(1, searcher.search(query, 1).totalHits);
}

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From source file:at.ac.univie.mminf.luceneSKOS.test.SKOSStandardQueryParserTest.java

License:Apache License

@Test
public void queryParserSearch() throws IOException, QueryNodeException {

    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", TextField.TYPE_STORED));

    writer.addDocument(doc);/*from   w w  w.  j  av  a 2  s.  co m*/

    searcher = new IndexSearcher(DirectoryReader.open(writer, false));

    Query query = new SKOSStandardQueryParser(skosAnalyzer).parse("\"fox jumps\"", "content");

    assertEquals(1, searcher.search(query, 1).totalHits);

    assertEquals("content:\"fox (jumps hops leaps)\"", query.toString());
    assertEquals("org.apache.lucene.search.MultiPhraseQuery", query.getClass().getName());

    query = new StandardQueryParser(new StandardAnalyzer()).parse("\"fox jumps\"", "content");
    assertEquals(1, searcher.search(query, 1).totalHits);

    assertEquals("content:\"fox jumps\"", query.toString());
    assertEquals("org.apache.lucene.search.PhraseQuery", query.getClass().getName());

}

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From source file:at.ac.univie.mminf.luceneSKOS.test.SKOSStandardQueryParserTest.java

License:Apache License

@Test
public void queryParserSearchWithBoosts() throws IOException, QueryNodeException {

    Document doc = new Document();
    doc.add(new Field("content", "The quick brown fox jumps over the lazy dog", TextField.TYPE_STORED));

    writer.addDocument(doc);/*  w w  w  . ja va 2  s  .  c om*/

    searcher = new IndexSearcher(DirectoryReader.open(writer, false));

    SKOSStandardQueryParser parser = new SKOSStandardQueryParser(skosAnalyzer);
    parser.setBoost(SKOSType.ALT, 0.5f);

    Query query = parser.parse("\"fox jumps\"", "content");

    assertEquals(1, searcher.search(query, 1).totalHits);

    // boosts do not work in phrase queries
    assertEquals("content:\"fox (jumps hops leaps)\"", query.toString());
    assertEquals("org.apache.lucene.search.MultiPhraseQuery", query.getClass().getName());

    query = parser.parse("fox jumps", "content");

    assertEquals(1, searcher.search(query, 1).totalHits);

    assertEquals("content:fox (content:jumps content:hops^0.5 content:leaps^0.5)", query.toString());
    assertEquals("org.apache.lucene.search.BooleanQuery", query.getClass().getName());

    query = new SKOSStandardQueryParser(new StandardAnalyzer()).parse("fox jumps", "content");
    assertEquals(1, searcher.search(query, 1).totalHits);

    assertEquals("content:fox content:jumps", query.toString());
    assertEquals("org.apache.lucene.search.BooleanQuery", query.getClass().getName());

}

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From source file:at.ac.univie.mminf.luceneSKOS.test.SKOSURIFilterTest.java

License:Apache License

@Test
public void singleUriExpansionWithStoredField() throws IOException {
    Document doc = new Document();
    doc.add(new Field("subject", "http://example.com/concept/1", TextField.TYPE_STORED));
    writer.addDocument(doc);//  ww w  .jav  a 2  s  .  c o m
    searcher = new IndexSearcher(DirectoryReader.open(writer, false));
    Query query = new TermQuery(new Term("subject", "leaps"));
    TopDocs results = searcher.search(query, 10);
    assertEquals(1, results.totalHits);

    Document indexDoc = searcher.doc(results.scoreDocs[0].doc);
    String[] fieldValues = indexDoc.getValues("subject");
    assertEquals(1, fieldValues.length);
    assertEquals(fieldValues[0], "http://example.com/concept/1");
}

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