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

Class org.apache.lucene.index.AtomicReader

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

org.apache.lucene.index.AtomicReader.terms()
This may return null if the field does not exist.

      assertTerms(leafReader.terms("field1docs"), leafReader.terms("field2freqs"), true);
      assertTerms(leafReader.terms("field3positions"), leafReader.terms("field4offsets"), true);
      assertTerms(leafReader.terms("field4offsets"), leafReader.terms("field5payloadsFixed"), true);
      assertTerms(leafReader.terms("field5payloadsFixed"), leafReader.terms("field6payloadsVariable"), true);
      assertTerms(leafReader.terms("field6payloadsVariable"), leafReader.terms("field7payloadsFixedOffsets"), true);
      assertTerms(leafReader.terms("field7payloadsFixedOffsets"), leafReader.terms("field8payloadsVariableOffsets"), true);
    }
    ir.close();
  }
  
  // following code is almost an exact dup of code from TestDuelingCodecs: sorry!

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    iw.close();
    
    AtomicReader segment = getOnlySegmentReader(ir);
    DocsEnum reuse = null;
    Map<DocsEnum,Boolean> allEnums = new IdentityHashMap<DocsEnum,Boolean>();
    TermsEnum te = segment.terms("foo").iterator(null);
    while (te.next() != null) {
      reuse = te.docs(null, reuse, DocsEnum.FLAG_NONE);
      allEnums.put(reuse, true);
    }

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    assertEquals(2, allEnums.size());
    
    allEnums.clear();
    DocsAndPositionsEnum posReuse = null;
    te = segment.terms("foo").iterator(null);
    while (te.next() != null) {
      posReuse = te.docsAndPositions(null, posReuse);
      allEnums.put(posReuse, true);
    }

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    iw.close();
    
    AtomicReader segment = getOnlySegmentReader(ir);
    DocsEnum reuse = null;
    Map<DocsEnum,Boolean> allEnums = new IdentityHashMap<DocsEnum,Boolean>();
    TermsEnum te = segment.terms("foo").iterator(null);
    while (te.next() != null) {
      reuse = te.docs(null, reuse, DocsEnum.FLAG_NONE);
      allEnums.put(reuse, true);
    }

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    assertEquals(4, allEnums.size());
    
    allEnums.clear();
    DocsAndPositionsEnum posReuse = null;
    te = segment.terms("foo").iterator(null);
    while (te.next() != null) {
      posReuse = te.docsAndPositions(null, posReuse);
      allEnums.put(posReuse, true);
    }

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      final Map<Integer, JoinScore> docToJoinScore = new HashMap<Integer, JoinScore>();
      if (multipleValuesPerDocument) {
        if (scoreDocsInOrder) {
          AtomicReader slowCompositeReader = SlowCompositeReaderWrapper.wrap(toSearcher.getIndexReader());
          Terms terms = slowCompositeReader.terms(toField);
          if (terms != null) {
            DocsEnum docsEnum = null;
            TermsEnum termsEnum = null;
            SortedSet<BytesRef> joinValues = new TreeSet<BytesRef>(BytesRef.getUTF8SortedAsUnicodeComparator());
            joinValues.addAll(joinValueToJoinScores.keySet());

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      assert !terms.isEmpty();
      final AtomicReader reader = context.reader();
      final Bits liveDocs = acceptDocs;
      PostingsAndFreq[] postingsFreqs = new PostingsAndFreq[terms.size()];


      final Terms fieldTerms = reader.terms(field);
      if (fieldTerms == null) {
        return null;
      }


      // Reuse single TermsEnum below:

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    int docid = disi.docID();
    assertEquals(-1, docid);
    assertTrue(disi.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);
    
    // now reuse and check again
    TermsEnum te = reader.terms("foo").iterator(null);
    assertTrue(te.seekExact(new BytesRef("bar")));
    disi = te.docs(null, disi, DocsEnum.FLAG_NONE);
    docid = disi.docID();
    assertEquals(-1, docid);
    assertTrue(disi.nextDoc() != DocIdSetIterator.NO_MORE_DOCS);

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    int numIters = atLeast(3);
    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());

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      assertEquals(0, disi.nextPosition());
      assertEquals(0, disi.startOffset());
      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);

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