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

      assertEquals(search.totalHits, 2);
      assertEquals(
          new HashSet<String>(Arrays.asList("0", "2")),
          new HashSet<String>(Arrays.asList(
              r.document(search.scoreDocs[0].doc).get("id"),
              r.document(search.scoreDocs[1].doc).get("id"))));
    }
    r.close();
    w.close();
    dir.close();
  }

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    IndexSearcher is = newSearcher(ir);
    
    SortField sortField = new SortField("collated", SortField.Type.STRING);
    
    TopDocs td = is.search(new MatchAllDocsQuery(), 5, new Sort(sortField));
    assertEquals("abc", ir.document(td.scoreDocs[0].doc).get("field"));
    assertEquals("ABC", ir.document(td.scoreDocs[1].doc).get("field"));
    ir.close();
    dir.close();
  }

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    SortField sortField = new SortField("collated", SortField.Type.STRING);
    
    TopDocs td = is.search(new MatchAllDocsQuery(), 5, new Sort(sortField));
    assertEquals("abc", ir.document(td.scoreDocs[0].doc).get("field"));
    assertEquals("ABC", ir.document(td.scoreDocs[1].doc).get("field"));
    ir.close();
    dir.close();
  }
  
  public void testRanges() throws Exception {

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    HashMap<String, CategoryHits> categoryHash 
      = new HashMap<String, CategoryHits>();
    
    for (ScoreDoc sd: results.scoreDocs) { //<co id="mlt.collect"/>
      Document d = indexReader.document(sd.doc);
      Fieldable f = d.getFieldable(categoryFieldName);
      String cat = f.stringValue();
      CategoryHits ch = categoryHash.get(cat);
      if (ch == null) {
        ch = new CategoryHits();

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    // Read the document from the index
    if( docId != null ) {
      Document doc = null;
      try {
        doc = reader.document( docId );
      }
      catch( Exception ex ) {}
      if( doc == null ) {
        throw new SolrException( SolrException.ErrorCode.NOT_FOUND, "Can't find document: "+docId );
      }

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      NamedList<Object> docNL = new NamedList<Object>();
      mapper.docNL = docNL;
      termVectors.add("doc-" + docId, docNL);


      if (keyField != null) {
        Document document = reader.document(docId, fieldSelector);
        Fieldable uniqId = document.getFieldable(uniqFieldName);
        String uniqVal = null;
        if (uniqId != null) {
          uniqVal = keyField.getType().storedToReadable(uniqId);          
        }

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    Directory dir = FSDirectory.open(indexDir);
    IndexReader reader = IndexReader.open(dir, true);
    int max = reader.maxDoc();
    for (int i=0; i < max; i++) {
      if (!reader.isDeleted(i)) {
        Document d = reader.document(i);
        for (Field f: d.getFields(field)) {
          if (f.isStored() && !f.isBinary()) {
            String value = f.stringValue();
            if (value != null) {
              out.printf("%s\n", value);

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    StringBuilder buf = new StringBuilder();
    
    for (int i=0; i < max; i++) {
      if (!reader.isDeleted(i)) {
        Document d = reader.document(i);
        String category = null;
        
        // determine whether any of the fields in this document contain a 
        // category in the category list
        fields: for (String field: categoryFields) {

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    FuzzyQuery query = new FuzzyQuery(new Term("field", "Lucene"));
    query.setRewriteMethod(new MultiTermQuery.TopTermsBoostOnlyBooleanQueryRewrite(50));
    ScoreDoc[] hits = searcher.search(query, null, 1000).scoreDocs;
    assertEquals(3, hits.length);
    // normally, 'Lucenne' would be the first result as IDF will skew the score.
    assertEquals("Lucene", reader.document(hits[0].doc).get("field"));
    assertEquals("Lucene", reader.document(hits[1].doc).get("field"));
    assertEquals("Lucenne", reader.document(hits[2].doc).get("field"));
    searcher.close();
    reader.close();
    directory.close();

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    query.setRewriteMethod(new MultiTermQuery.TopTermsBoostOnlyBooleanQueryRewrite(50));
    ScoreDoc[] hits = searcher.search(query, null, 1000).scoreDocs;
    assertEquals(3, hits.length);
    // normally, 'Lucenne' would be the first result as IDF will skew the score.
    assertEquals("Lucene", reader.document(hits[0].doc).get("field"));
    assertEquals("Lucene", reader.document(hits[1].doc).get("field"));
    assertEquals("Lucenne", reader.document(hits[2].doc).get("field"));
    searcher.close();
    reader.close();
    directory.close();
  }

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