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

Class org.apache.lucene.index.IndexReader

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

org.apache.lucene.index.IndexReader.document()
Returns the stored fields of the n^th Document in this index.
NOTE: for performance reasons, this method does not check if the requested document is deleted, and therefore asking for a deleted document may yield unspecified results. Usually this is not required, however you can call {@link #isDeleted(int)} with the requested document ID to verifythe document is not deleted. @throws CorruptIndexException if the index is corrupt @throws IOException if there is a low-level IO error

    for (int i = 0; i < reader.maxDoc(); i++) {
      if (reader.isDeleted(i)) {
        System.out.println("-doc " + i + " deleted");
        continue;
      }
      Document doc = reader.document(i);
      // make sure we got the right one
      assertEquals("check hash", hash.toString(), doc.get("digest"));
      System.out.println(doc);
    }
    reader.close();

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    // assert with norms scoring turned off


    hits = is.search(new MatchAllDocsQuery(), null, 1000).scoreDocs;
    assertEquals(3, hits.length);
    assertEquals("one", ir.document(hits[0].doc).get("key"));
    assertEquals("two", ir.document(hits[1].doc).get("key"));
    assertEquals("three four", ir.document(hits[2].doc).get("key"));


    // assert with norms scoring turned on

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    // assert with norms scoring turned off


    hits = is.search(new MatchAllDocsQuery(), null, 1000).scoreDocs;
    assertEquals(3, hits.length);
    assertEquals("one", ir.document(hits[0].doc).get("key"));
    assertEquals("two", ir.document(hits[1].doc).get("key"));
    assertEquals("three four", ir.document(hits[2].doc).get("key"));


    // assert with norms scoring turned on


    MatchAllDocsQuery normsQuery = new MatchAllDocsQuery("key");

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    hits = is.search(new MatchAllDocsQuery(), null, 1000).scoreDocs;
    assertEquals(3, hits.length);
    assertEquals("one", ir.document(hits[0].doc).get("key"));
    assertEquals("two", ir.document(hits[1].doc).get("key"));
    assertEquals("three four", ir.document(hits[2].doc).get("key"));


    // assert with norms scoring turned on


    MatchAllDocsQuery normsQuery = new MatchAllDocsQuery("key");
    hits = is.search(normsQuery, null, 1000).scoreDocs;

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    MatchAllDocsQuery normsQuery = new MatchAllDocsQuery("key");
    hits = is.search(normsQuery, null, 1000).scoreDocs;
    assertEquals(3, hits.length);


    assertEquals("three four", ir.document(hits[0].doc).get("key"));    
    assertEquals("two", ir.document(hits[1].doc).get("key"));
    assertEquals("one", ir.document(hits[2].doc).get("key"));


    // change norm & retest
    ir.setNorm(0, "key", 400f);

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    MatchAllDocsQuery normsQuery = new MatchAllDocsQuery("key");
    hits = is.search(normsQuery, null, 1000).scoreDocs;
    assertEquals(3, hits.length);


    assertEquals("three four", ir.document(hits[0].doc).get("key"));    
    assertEquals("two", ir.document(hits[1].doc).get("key"));
    assertEquals("one", ir.document(hits[2].doc).get("key"));


    // change norm & retest
    ir.setNorm(0, "key", 400f);
    normsQuery = new MatchAllDocsQuery("key");

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    hits = is.search(normsQuery, null, 1000).scoreDocs;
    assertEquals(3, hits.length);


    assertEquals("three four", ir.document(hits[0].doc).get("key"));    
    assertEquals("two", ir.document(hits[1].doc).get("key"));
    assertEquals("one", ir.document(hits[2].doc).get("key"));


    // change norm & retest
    ir.setNorm(0, "key", 400f);
    normsQuery = new MatchAllDocsQuery("key");
    hits = is.search(normsQuery, null, 1000).scoreDocs;

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    ir.setNorm(0, "key", 400f);
    normsQuery = new MatchAllDocsQuery("key");
    hits = is.search(normsQuery, null, 1000).scoreDocs;
    assertEquals(3, hits.length);


    assertEquals("one", ir.document(hits[0].doc).get("key"));
    assertEquals("three four", ir.document(hits[1].doc).get("key"));    
    assertEquals("two", ir.document(hits[2].doc).get("key"));
    
    // some artificial queries to trigger the use of skipTo():

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    normsQuery = new MatchAllDocsQuery("key");
    hits = is.search(normsQuery, null, 1000).scoreDocs;
    assertEquals(3, hits.length);


    assertEquals("one", ir.document(hits[0].doc).get("key"));
    assertEquals("three four", ir.document(hits[1].doc).get("key"));    
    assertEquals("two", ir.document(hits[2].doc).get("key"));
    
    // some artificial queries to trigger the use of skipTo():
    
    BooleanQuery bq = new BooleanQuery();

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    hits = is.search(normsQuery, null, 1000).scoreDocs;
    assertEquals(3, hits.length);


    assertEquals("one", ir.document(hits[0].doc).get("key"));
    assertEquals("three four", ir.document(hits[1].doc).get("key"));    
    assertEquals("two", ir.document(hits[2].doc).get("key"));
    
    // some artificial queries to trigger the use of skipTo():
    
    BooleanQuery bq = new BooleanQuery();
    bq.add(new MatchAllDocsQuery(), BooleanClause.Occur.MUST);

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