Examples of org.apache.lucene.index.TermsEnum.docsAndPositions()

org.apache.lucene.index.TermsEnum.docsAndPositions()
Get {@link DocsAndPositionsEnum} for the current term.Do not call this when the enum is unpositioned. This method will return null if positions were not indexed. @param liveDocs unset bits are documents that should notbe returned @param reuse pass a prior DocsAndPositionsEnum for possible reuse @see #docsAndPositions(Bits,DocsAndPositionsEnum,int)

    assertEquals(1, vector.size());
    TermsEnum termsEnum = vector.iterator(null);
    assertNotNull(termsEnum.next());
    assertEquals("one", termsEnum.term().utf8ToString());
    assertEquals(5, termsEnum.totalTermFreq());
    DocsAndPositionsEnum dpEnum = termsEnum.docsAndPositions(null, null);
    assertNotNull(dpEnum);
    assertTrue(dpEnum.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    assertEquals(5, dpEnum.freq());
    for(int i=0;i<5;i++) {
      assertEquals(i, dpEnum.nextPosition());

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    assertEquals(5, dpEnum.freq());
    for(int i=0;i<5;i++) {
      assertEquals(i, dpEnum.nextPosition());
    }


    dpEnum = termsEnum.docsAndPositions(null, dpEnum);
    assertNotNull(dpEnum);
    assertTrue(dpEnum.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    assertEquals(5, dpEnum.freq());
    for(int i=0;i<5;i++) {
      dpEnum.nextPosition();

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          while(iwTermsIter.next() != null) {
            assertNotNull(memTermsIter.next());
            assertEquals(iwTermsIter.term(), memTermsIter.term());
            DocsAndPositionsEnum iwDocsAndPos = iwTermsIter.docsAndPositions(null, null);
            DocsAndPositionsEnum memDocsAndPos = memTermsIter.docsAndPositions(null, null);
            while(iwDocsAndPos.nextDoc() != DocsAndPositionsEnum.NO_MORE_DOCS) {
              assertEquals(iwDocsAndPos.docID(), memDocsAndPos.nextDoc());
              assertEquals(iwDocsAndPos.freq(), memDocsAndPos.freq());
              for (int i = 0; i < iwDocsAndPos.freq(); i++) {
                assertEquals("term: " + iwTermsIter.term().utf8ToString(), iwDocsAndPos.nextPosition(), memDocsAndPos.nextPosition());

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      assertEquals(3, disi.endOffset());
      
      // now reuse and check again
      TermsEnum te = reader.terms("foo").iterator(null);
      assertTrue(te.seekExact(new BytesRef("bar")));
      disi = te.docsAndPositions(null, disi);
      docid = disi.docID();
      assertEquals(-1, docid);
      assertTrue(disi.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
      reader.close();
      memory.reset();

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    while (termEnum.next() != null) {
      assertNotNull(memTermEnum.next());
      assertThat(termEnum.totalTermFreq(), equalTo(memTermEnum.totalTermFreq()));


      DocsAndPositionsEnum docsPosEnum = termEnum.docsAndPositions(null, null, 0);
      DocsAndPositionsEnum memDocsPosEnum = memTermEnum.docsAndPositions(null, null, 0);
      String currentTerm = termEnum.term().utf8ToString();


      assertThat("Token mismatch for field: " + field_name, currentTerm, equalTo(memTermEnum.term().utf8ToString()));


      docsPosEnum.nextDoc();

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      String docTerm = term.utf8ToString();


      if (matchedTokens.contains(docTerm) || docTerm.startsWith(prefixToken)) {


        DocsAndPositionsEnum docPosEnum = it.docsAndPositions(null, null, DocsAndPositionsEnum.FLAG_OFFSETS);
        docPosEnum.nextDoc();


        // use the first occurrence of the term
        int p = docPosEnum.nextPosition();
        if (p < position) {

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      Terms tvs = tvFields.terms(field);
      assertNotNull(tvs);
      assertEquals(2, tvs.size());
      TermsEnum tvsEnum = tvs.iterator(null);
      assertEquals(new BytesRef("abc"), tvsEnum.next());
      final DocsAndPositionsEnum dpEnum = tvsEnum.docsAndPositions(null, null);
      if (field.equals("tv")) {
        assertNull(dpEnum);
      } else {
        assertNotNull(dpEnum);
      }

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    final AtomicReader reader = getOnlySegmentReader(writer.getReader());
    final Fields fields = reader.getTermVectors(0);
    final Terms terms = fields.terms("f");
    final TermsEnum te = terms.iterator(null);
    assertEquals(new BytesRef("a"), te.next());
    final DocsAndPositionsEnum dpe = te.docsAndPositions(null, null);
    assertEquals(0, dpe.nextDoc());
    assertEquals(2, dpe.freq());
    assertEquals(0, dpe.nextPosition());
    assertEquals(0, dpe.startOffset());
    final int endOffset = dpe.endOffset();

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    Terms vector = r.getTermVectors(0).terms("field");
    assertEquals(1, vector.size());
    TermsEnum termsEnum = vector.iterator(null);
    termsEnum.next();
    assertEquals(2, termsEnum.totalTermFreq());
    DocsAndPositionsEnum positions = termsEnum.docsAndPositions(null, null);
    assertTrue(positions.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    assertEquals(2, positions.freq());
    positions.nextPosition();
    assertEquals(0, positions.startOffset());
    assertEquals(4, positions.endOffset());

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                assertThat("expected ttf of " + string, numDocs * 2, equalTo((int) iterator.totalTermFreq()));
            } else {
                assertThat("expected ttf of " + string, numDocs, equalTo((int) iterator.totalTermFreq()));
            }


            DocsAndPositionsEnum docsAndPositions = iterator.docsAndPositions(null, null);
            assertThat(docsAndPositions.nextDoc(), equalTo(0));
            assertThat(freq[j], equalTo(docsAndPositions.freq()));
            assertThat(iterator.docFreq(), equalTo(numDocs));
            int[] termPos = pos[j];
            int[] termStartOffset = startOffset[j];

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