Examples of org.apache.lucene.index.IndexReader.docFreq()

Class org.apache.lucene.index.IndexReader

Examples of org.apache.lucene.index.IndexReader.docFreq()

org.apache.lucene.index.IndexReader.docFreq()
Returns the number of documents containing the term t. @throws IOException if there is a low-level IO error


        IndexReader reader = IndexReader.open(dir);
        Term aaa = new Term("content", "aaa");
        Term bbb = new Term("content", "bbb");
        Term ccc = new Term("content", "ccc");
        assertEquals(37, reader.docFreq(ccc));
        reader.deleteDocument(0);
        assertEquals(37, reader.docFreq(aaa));
        dir.tweakBufferSizes();
        reader.deleteDocument(4);
        assertEquals(reader.docFreq(bbb), 37);

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        Term aaa = new Term("content", "aaa");
        Term bbb = new Term("content", "bbb");
        Term ccc = new Term("content", "ccc");
        assertEquals(37, reader.docFreq(ccc));
        reader.deleteDocument(0);
        assertEquals(37, reader.docFreq(aaa));
        dir.tweakBufferSizes();
        reader.deleteDocument(4);
        assertEquals(reader.docFreq(bbb), 37);
        dir.tweakBufferSizes();

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        assertEquals(37, reader.docFreq(ccc));
        reader.deleteDocument(0);
        assertEquals(37, reader.docFreq(aaa));
        dir.tweakBufferSizes();
        reader.deleteDocument(4);
        assertEquals(reader.docFreq(bbb), 37);
        dir.tweakBufferSizes();


        IndexSearcher searcher = new IndexSearcher(reader);
        ScoreDoc[] hits = searcher.search(new TermQuery(bbb), null, 1000).scoreDocs;
        dir.tweakBufferSizes();

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      writer.addDocument(doc);
      writer.close();
      
      IndexReader reader = DirectoryReader.open(dir);
      Term t = new Term("field", "x");
      assertEquals(1, reader.docFreq(t));
      t = new Term("field", "z");
      assertEquals(0, reader.docFreq(t));
      reader.close();
      dir.close();
    }

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      IndexReader reader = DirectoryReader.open(dir);
      Term t = new Term("field", "x");
      assertEquals(1, reader.docFreq(t));
      t = new Term("field", "z");
      assertEquals(0, reader.docFreq(t));
      reader.close();
      dir.close();
    }
  }

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    writer.close();


    IndexReader reader = IndexReader.open(dir);


    // Make sure all terms < max size were indexed
    assertEquals(2, reader.docFreq(new Term("content", "abc")));
    assertEquals(1, reader.docFreq(new Term("content", "bbb")));
    assertEquals(1, reader.docFreq(new Term("content", "term")));
    assertEquals(1, reader.docFreq(new Term("content", "another")));


    // Make sure position is still incremented when

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    IndexReader reader = IndexReader.open(dir);


    // Make sure all terms < max size were indexed
    assertEquals(2, reader.docFreq(new Term("content", "abc")));
    assertEquals(1, reader.docFreq(new Term("content", "bbb")));
    assertEquals(1, reader.docFreq(new Term("content", "term")));
    assertEquals(1, reader.docFreq(new Term("content", "another")));


    // Make sure position is still incremented when
    // massive term is skipped:

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    IndexReader reader = IndexReader.open(dir);


    // Make sure all terms < max size were indexed
    assertEquals(2, reader.docFreq(new Term("content", "abc")));
    assertEquals(1, reader.docFreq(new Term("content", "bbb")));
    assertEquals(1, reader.docFreq(new Term("content", "term")));
    assertEquals(1, reader.docFreq(new Term("content", "another")));


    // Make sure position is still incremented when
    // massive term is skipped:
    DocsAndPositionsEnum tps = MultiFields.getTermPositionsEnum(reader,

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    // Make sure all terms < max size were indexed
    assertEquals(2, reader.docFreq(new Term("content", "abc")));
    assertEquals(1, reader.docFreq(new Term("content", "bbb")));
    assertEquals(1, reader.docFreq(new Term("content", "term")));
    assertEquals(1, reader.docFreq(new Term("content", "another")));


    // Make sure position is still incremented when
    // massive term is skipped:
    DocsAndPositionsEnum tps = MultiFields.getTermPositionsEnum(reader,
                                                                MultiFields.getLiveDocs(reader),

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    sa.setMaxTokenLength(100000);
    writer  = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, sa));
    writer.addDocument(doc);
    writer.close();
    reader = IndexReader.open(dir);
    assertEquals(1, reader.docFreq(new Term("content", bigTerm)));
    reader.close();


    dir.close();
  }

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