Examples of org.apache.lucene.index.TermDocs.skipTo()

org.apache.lucene.index.TermDocs.skipTo()
Skips entries to the first beyond the current whose document number is greater than or equal to target.
Returns true iff there is such an entry.
Behaves as if written:
```
 boolean skipTo(int target) { do { if (!next()) return false; } while (target > doc()); return true; } 
```
Some implementations are considerably more efficient than that.

            return docID;
          }


          @Override
          public int advance(int target) throws IOException {
            if (td.skipTo(target)) {
              docID = td.doc();
            } else {
              docID = NO_MORE_DOCS;
            }
            return docID;

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                // filter out documents that do not match the name test
                if (nameTest != null) {
                    TermDocs tDocs = reader.termDocs(new Term(FieldNames.LABEL, nameTest));
                    try {
                        for (int i = hits.nextSetBit(0); i >= 0; i = hits.nextSetBit(i + 1)) {
                            if (!tDocs.skipTo(i)) {
                                hits.clear(i);
                            }
                        }
                    } finally {
                        tDocs.close();

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            return doc;
          }
          
          @Override
          public int advance(int target) throws IOException {
            if (!termDocs.skipTo(target))
              return doc = NO_MORE_DOCS;
            while (!matchDoc(doc = termDocs.doc())) { 
              if (!termDocs.next())
                return doc = NO_MORE_DOCS;
            }

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      Explanation tfExplanation = new Explanation();
      int tf = 0;
      TermDocs termDocs = reader.termDocs(term);
      if (termDocs != null) {
        try {
          if (termDocs.skipTo(doc) && termDocs.doc() == doc) {
            tf = termDocs.freq();
          }
        } finally {
          termDocs.close();
        }

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    assertEquals(aprioriTermDocs.next(), testTermDocs.next());
    assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
    assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());


    if (aprioriTermDocs.skipTo(4)) {
      assertTrue(testTermDocs.skipTo(4));
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
      assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());
    } else {
      assertFalse(testTermDocs.skipTo(4));
    }

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    if (aprioriTermDocs.skipTo(4)) {
      assertTrue(testTermDocs.skipTo(4));
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
      assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());
    } else {
      assertFalse(testTermDocs.skipTo(4));
    }


    if (aprioriTermDocs.next()) {
      assertTrue(testTermDocs.next());
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());

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    // beyond this point all next and skipto will return false


    if (aprioriTermDocs.skipTo(100)) {
      assertTrue(testTermDocs.skipTo(100));
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
      assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());
    } else {
      assertFalse(testTermDocs.skipTo(100));
    }

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    if (aprioriTermDocs.skipTo(100)) {
      assertTrue(testTermDocs.skipTo(100));
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
      assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());
    } else {
      assertFalse(testTermDocs.skipTo(100));
    }




    if (aprioriTermDocs.next()) {
      assertTrue(testTermDocs.next());

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    } else {
      assertFalse(testTermDocs.next());
    }


    if (aprioriTermDocs.skipTo(110)) {
      assertTrue(testTermDocs.skipTo(110));
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
      assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());
    } else {
      assertFalse(testTermDocs.skipTo(110));
    }

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    if (aprioriTermDocs.skipTo(110)) {
      assertTrue(testTermDocs.skipTo(110));
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
      assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());
    } else {
      assertFalse(testTermDocs.skipTo(110));
    }


    if (aprioriTermDocs.skipTo(10)) {
      assertTrue(testTermDocs.skipTo(10));
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());

View Full Code Here

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