Examples of org.apache.lucene.index.AtomicReader.termPositionsEnum()

Class org.apache.lucene.index.AtomicReader

Examples of org.apache.lucene.index.AtomicReader.termPositionsEnum()

org.apache.lucene.index.AtomicReader.termPositionsEnum()
Returns {@link DocsAndPositionsEnum} for the specifiedterm. This will return null if the field or term does not exist or positions weren't indexed. @see TermsEnum#docsAndPositions(Bits,DocsAndPositionsEnum)

    mindex.addField("field", "the quick brown fox", mockAnalyzer);
    AtomicReader reader = (AtomicReader) mindex.createSearcher().getIndexReader();
    assertNull(reader.getNumericDocValues("not-in-index"));
    assertNull(reader.getNormValues("not-in-index"));
    assertNull(reader.termDocsEnum(new Term("not-in-index", "foo")));
    assertNull(reader.termPositionsEnum(new Term("not-in-index", "foo")));
    assertNull(reader.terms("not-in-index"));
  }
  
  public void testDuellMemIndex() throws IOException {
    LineFileDocs lineFileDocs = new LineFileDocs(random());

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    MemoryIndex memory = new MemoryIndex(true,  random().nextInt(50) * 1024 * 1024);
    for (int i = 0; i < numIters; i++) { // check reuse
      memory.addField("foo", "bar", analyzer);
      AtomicReader reader = (AtomicReader) memory.createSearcher().getIndexReader();
      assertEquals(1, reader.terms("foo").getSumTotalTermFreq());
      DocsAndPositionsEnum disi = reader.termPositionsEnum(new Term("foo", "bar"));
      int docid = disi.docID();
      assertEquals(-1, docid);
      assertTrue(disi.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
      assertEquals(0, disi.nextPosition());
      assertEquals(0, disi.startOffset());

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    mindex.addField("field", "the quick brown fox", mockAnalyzer);
    AtomicReader reader = (AtomicReader) mindex.createSearcher().getIndexReader();
    assertNull(reader.getNumericDocValues("not-in-index"));
    assertNull(reader.getNormValues("not-in-index"));
    assertNull(reader.termDocsEnum(new Term("not-in-index", "foo")));
    assertNull(reader.termPositionsEnum(new Term("not-in-index", "foo")));
    assertNull(reader.terms("not-in-index"));
  }
  
  public void testDuellMemIndex() throws IOException {
    LineFileDocs lineFileDocs = new LineFileDocs(random());

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    writer.addDocument(doc);


    final IndexReader readerFromWriter = writer.getReader();
    AtomicReader r = SlowCompositeReaderWrapper.wrap(readerFromWriter);


    DocsAndPositionsEnum tp = r.termPositionsEnum(new Term("content", "a"));
    
    int count = 0;
    assertTrue(tp.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    // "a" occurs 4 times
    assertEquals(4, tp.freq());

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    MemoryIndex memory = new MemoryIndex(true,  random().nextInt(50) * 1024 * 1024);
    for (int i = 0; i < numIters; i++) { // check reuse
      memory.addField("foo", "bar", analyzer);
      AtomicReader reader = (AtomicReader) memory.createSearcher().getIndexReader();
      assertEquals(1, reader.terms("foo").getSumTotalTermFreq());
      DocsAndPositionsEnum disi = reader.termPositionsEnum(new Term("foo", "bar"));
      int docid = disi.docID();
      assertEquals(-1, docid);
      assertTrue(disi.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
      assertEquals(0, disi.nextPosition());
      assertEquals(0, disi.startOffset());

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    mindex.addField("field", "the quick brown fox", mockAnalyzer);
    AtomicReader reader = (AtomicReader) mindex.createSearcher().getIndexReader();
    assertNull(reader.getNumericDocValues("not-in-index"));
    assertNull(reader.getNormValues("not-in-index"));
    assertNull(reader.termDocsEnum(new Term("not-in-index", "foo")));
    assertNull(reader.termPositionsEnum(new Term("not-in-index", "foo")));
    assertNull(reader.terms("not-in-index"));
  }
  
  public void testDuellMemIndex() throws IOException {
    LineFileDocs lineFileDocs = new LineFileDocs(random());

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