Examples of org.apache.lucene.index.DocsAndPositionsEnum.nextPosition()

Class org.apache.lucene.index.DocsAndPositionsEnum

Examples of org.apache.lucene.index.DocsAndPositionsEnum.nextPosition()

org.apache.lucene.index.DocsAndPositionsEnum.nextPosition()
Returns the next position. You should only call this up to {@link DocsEnum#freq()} times elsethe behavior is not defined. If positions were not indexed this will return -1; this only happens if offsets were indexed and you passed needsOffset=true when pulling the enum.

                  payloads[upto] = new byte[freq][];
                }
                positions[upto] = new int[mult*freq];
                int posUpto = 0;
                for(int pos=0;pos<freq;pos++) {
                  positions[upto][posUpto] = docsAndPositionsEnum.nextPosition();
                  if (hasPayloads) {
                    BytesRef payload = docsAndPositionsEnum.getPayload();
                    if (payload != null) {
                      byte[] payloadBytes = new byte[payload.length];
                      System.arraycopy(payload.bytes, payload.offset, payloadBytes, 0, payload.length);

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                                                                MultiFields.getLiveDocs(searcher.getIndexReader()),
                                                                "field",
                                                                new BytesRef("1"));
    pos.nextDoc();
    // first token should be at position 0
    assertEquals(0, pos.nextPosition());
    
    pos = MultiFields.getTermPositionsEnum(searcher.getIndexReader(),
                                           MultiFields.getLiveDocs(searcher.getIndexReader()),
                                           "field",
                                           new BytesRef("2"));

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                                           MultiFields.getLiveDocs(searcher.getIndexReader()),
                                           "field",
                                           new BytesRef("2"));
    pos.nextDoc();
    // second token should be at position 2
    assertEquals(2, pos.nextPosition());
    
    PhraseQuery q;
    ScoreDoc[] hits;


    q = new PhraseQuery();

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    int count = 0;
    assertTrue(tp.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    // "a" occurs 4 times
    assertEquals(4, tp.freq());
    assertEquals(0, tp.nextPosition());
    assertEquals(1, tp.nextPosition());
    assertEquals(3, tp.nextPosition());
    assertEquals(6, tp.nextPosition());


    // only one doc has "a"

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    int count = 0;
    assertTrue(tp.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    // "a" occurs 4 times
    assertEquals(4, tp.freq());
    assertEquals(0, tp.nextPosition());
    assertEquals(1, tp.nextPosition());
    assertEquals(3, tp.nextPosition());
    assertEquals(6, tp.nextPosition());


    // only one doc has "a"
    assertEquals(DocIdSetIterator.NO_MORE_DOCS, tp.nextDoc());

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    assertTrue(tp.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    // "a" occurs 4 times
    assertEquals(4, tp.freq());
    assertEquals(0, tp.nextPosition());
    assertEquals(1, tp.nextPosition());
    assertEquals(3, tp.nextPosition());
    assertEquals(6, tp.nextPosition());


    // only one doc has "a"
    assertEquals(DocIdSetIterator.NO_MORE_DOCS, tp.nextDoc());

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    // "a" occurs 4 times
    assertEquals(4, tp.freq());
    assertEquals(0, tp.nextPosition());
    assertEquals(1, tp.nextPosition());
    assertEquals(3, tp.nextPosition());
    assertEquals(6, tp.nextPosition());


    // only one doc has "a"
    assertEquals(DocIdSetIterator.NO_MORE_DOCS, tp.nextDoc());


    IndexSearcher is = newSearcher(readerFromWriter);

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    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();
    assertEquals(1 + positionGap, dpe.nextPosition());
    assertEquals(1 + endOffset + offsetGap, dpe.endOffset());
    assertEquals(null, te.next());

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    assertEquals(0, dpe.nextDoc());
    assertEquals(2, dpe.freq());
    assertEquals(0, dpe.nextPosition());
    assertEquals(0, dpe.startOffset());
    final int endOffset = dpe.endOffset();
    assertEquals(1 + positionGap, dpe.nextPosition());
    assertEquals(1 + endOffset + offsetGap, dpe.endOffset());
    assertEquals(null, te.next());
    reader.close();
    writer.close();
    writer.w.getDirectory().close();

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            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());
                if (offsets) {
                  assertEquals(iwDocsAndPos.startOffset(), memDocsAndPos.startOffset());
                  assertEquals(iwDocsAndPos.endOffset(), memDocsAndPos.endOffset());
                }
              }

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