Examples of org.apache.lucene.index.IndexWriter.addDocument()

Class org.apache.lucene.index.IndexWriter

Examples of org.apache.lucene.index.IndexWriter.addDocument()

org.apache.lucene.index.IndexWriter.addDocument()
Adds a document to this index. If the document contains more than {@link #setMaxFieldLength(int)} terms for a given field, the remainder arediscarded.
Note that if an Exception is hit (for example disk full) then the index will be consistent, but this document may not have been added. Furthermore, it's possible the index will have one segment in non-compound format even when using compound files (when a merge has partially succeeded).

This method periodically flushes pending documents to the Directory (see above), and also periodically triggers segment merges in the index according to the {@link MergePolicy} in use.
Merges temporarily consume space in the directory. The amount of space required is up to 1X the size of all segments being merged, when no readers/searchers are open against the index, and up to 2X the size of all segments being merged when readers/searchers are open against the index (see {@link #optimize()} for details). The sequence ofprimitive merge operations performed is governed by the merge policy.
Note that each term in the document can be no longer than 16383 characters, otherwise an IllegalArgumentException will be thrown.

Note that it's possible to create an invalid Unicode string in java if a UTF16 surrogate pair is malformed. In this case, the invalid characters are silently replaced with the Unicode replacement character U+FFFD.

NOTE: if this method hits an OutOfMemoryError you should immediately close the writer. See above for details.
@throws CorruptIndexException if the index is corrupt @throws IOException if there is a low-level IO error

    Document doc = new Document();
    doc.add(new Field("partnum", "Q36", Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);
    doc = new Document();
    doc.add(new Field("partnum", "Q37", Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);
    writer.close();


    IndexReader reader = IndexReader.open(dir, true);
    TermDocs td = reader.termDocs(new Term("partnum", "Q36"));
    assertTrue(td.next());

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    stream.reset();  
    checkTokens(stream);
    
    // 2) now add the document to the index and verify if all tokens are indexed
    //    don't reset the stream here, the DocumentWriter should do that implicitly
    writer.addDocument(doc);
    writer.close();
    
    IndexReader reader = IndexReader.open(dir, true);
    TermPositions termPositions = reader.termPositions(new Term("preanalyzed", "term1"));
    assertTrue(termPositions.next());

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                    // Add the last modified date of the file a field named "modified".  Use a
                    // Keyword field, so that it's searchable, but so that no attempt is made
                    // to tokenize the field into words.
                    doc.add(new Field("modified", DateTools.timeToString(file.lastModified(), DateTools.Resolution.MILLISECOND), Field.Store.YES, Field.Index.NOT_ANALYZED));


                    writer.addDocument(doc);
                    totalIndexed++;
                  }
                } catch (DocumentHandlerException e) {
                  throw new BuildException(e);
                }

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    IndexWriter iw = new IndexWriter(ramDir, analyzer, true,
        IndexWriter.MaxFieldLength.LIMITED);
    Document doc = new Document();
    doc.add(new Field("body", "blah the footest blah", Field.Store.NO,
        Field.Index.ANALYZED));
    iw.addDocument(doc);
    iw.close();


    StandardQueryParser mfqp = new StandardQueryParser();


    mfqp.setMultiFields(new String[] { "body" });

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    RAMDirectory directory = new RAMDirectory();
    IndexWriter writer= new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
    for (int i = 0; i < docFields.length; i++) {
      Document doc = new Document();
      doc.add(new Field(field, docFields[i], Field.Store.NO, Field.Index.ANALYZED));
      writer.addDocument(doc);
    }
    writer.close();
    searcher = new IndexSearcher(directory, true);


    // Make big index

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    IndexWriter w = new IndexWriter(dir2, new WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    doc.add(new Field("field2", "xxx", Field.Store.NO, Field.Index.ANALYZED));
    for(int i=0;i<NUM_EXTRA_DOCS/2;i++) {
      w.addDocument(doc);
    }
    doc = new Document();
    doc.add(new Field("field2", "big bad bug", Field.Store.NO, Field.Index.ANALYZED));
    for(int i=0;i<NUM_EXTRA_DOCS/2;i++) {
      w.addDocument(doc);

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      w.addDocument(doc);
    }
    doc = new Document();
    doc.add(new Field("field2", "big bad bug", Field.Store.NO, Field.Index.ANALYZED));
    for(int i=0;i<NUM_EXTRA_DOCS/2;i++) {
      w.addDocument(doc);
    }
    // optimize to 1 segment
    w.optimize();
    reader = w.getReader();
    w.close();

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    try {
      IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
      for (int i = 0; i < values.length; i++) {
        Document doc = new Document();
        doc.add(new Field(FIELD, values[i], Field.Store.YES, Field.Index.NOT_ANALYZED));
        writer.addDocument(doc);
      }
      writer.close();


      BooleanQuery booleanQuery1 = new BooleanQuery();
      booleanQuery1.add(new TermQuery(new Term(FIELD, "1")), BooleanClause.Occur.SHOULD);

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    IndexWriter iw = new IndexWriter(ramDir, analyzer, true,
        IndexWriter.MaxFieldLength.LIMITED);
    Document doc = new Document();
    doc.add(new Field("body", "blah the footest blah", Field.Store.NO,
        Field.Index.ANALYZED));
    iw.addDocument(doc);
    iw.close();


    MultiFieldQueryParserWrapper mfqp = new MultiFieldQueryParserWrapper(
        new String[] { "body" }, analyzer);
    mfqp.setDefaultOperator(QueryParserWrapper.Operator.AND);

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      Document doc = new Document();
      doc.add(new Field("name", docsContent[i].name, Field.Store.YES,
          Field.Index.ANALYZED));
      doc.add(new Field("id", docsContent[i].id, Field.Store.YES,
          Field.Index.ANALYZED));
      w.addDocument(doc);
    }
    w.close();
    searcher = new IndexSearcher(rd, true);
  }

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