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

Class org.apache.lucene.index.IndexWriter

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

org.apache.lucene.index.IndexWriter.deleteDocuments()
Deletes the document(s) containing term.
NOTE: if this method hits an OutOfMemoryError you should immediately close the writer. See above for details.
@param term the term to identify the documents to be deleted @throws CorruptIndexException if the index is corrupt @throws IOException if there is a low-level IO error

    writer.close();
  }
  
  private void deleteDocument() throws IOException {
    IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random, MockTokenizer.WHITESPACE, false)).setOpenMode(OpenMode.APPEND));
    writer.deleteDocuments( new Term( "t_text1", "del" ) );
    // To see negative idf, keep comment the following line
    //writer.optimize();
    writer.close();
  }

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                                      MaxFieldLength.LIMITED);
      for (int i = 0; i < numDeletedDocs; i++) {
        w.addDocument(new Document());
      }
      w.commit();
      w.deleteDocuments( new MatchAllDocsQuery() );
      w.commit();


      if (0 < numDeletedDocs)
        Assert.assertTrue("writer has no deletions", w.hasDeletions());

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    ConstantScoreQuery constantScore = new ConstantScoreQuery(filter);
    docs = searcher.search(constantScore, 1);
    assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);


    // now delete the doc, refresh the reader, and see that it's not there
    writer.deleteDocuments(new Term("id", "1"));


    reader = refreshReader(reader);
    searcher = new IndexSearcher(reader);


    docs = searcher.search(new MatchAllDocsQuery(), filter, 1);

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    docs = searcher.search(constantScore, 1);
    assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);
    assertEquals(missCount, filter.missCount);


    // now delete the doc, refresh the reader, and see that it's not there
    writer.deleteDocuments(new Term("id", "1"));


    reader = refreshReader(reader);
    searcher = new IndexSearcher(reader);


    missCount = filter.missCount;

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    constantScore = new ConstantScoreQuery(filter);
    docs = searcher.search(constantScore, 1);
    assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);


    // now delete the doc, refresh the reader, and see that it's not there
    writer.deleteDocuments(new Term("id", "1"));


    reader = refreshReader(reader);
    searcher = new IndexSearcher(reader);


    docs = searcher.search(new MatchAllDocsQuery(), filter, 1);

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    writer.close();
  }
  
  private void deleteDocument() throws IOException {
    IndexWriter writer = new IndexWriter( dir, a, false, MaxFieldLength.LIMITED );
    writer.deleteDocuments( new Term( "t_text1", "del" ) );
    // To see negative idf, keep comment the following line
    //writer.optimize();
    writer.close();
  }

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    BoboMultiReader reader = null;
    try {
      Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_43);
      IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_43, analyzer);
      IndexWriter idxWriter = new IndexWriter(_indexDir, config);
      idxWriter.deleteDocuments(new Term("id", "1"));
      idxWriter.deleteDocuments(new Term("id", "2"));
      idxWriter.commit();
      reader = newIndexReader();


      br = new BrowseRequest();

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    try {
      Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_43);
      IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_43, analyzer);
      IndexWriter idxWriter = new IndexWriter(_indexDir, config);
      idxWriter.deleteDocuments(new Term("id", "1"));
      idxWriter.deleteDocuments(new Term("id", "2"));
      idxWriter.commit();
      reader = newIndexReader();


      br = new BrowseRequest();
      br.setCount(10);

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          Path dirPath = directory.getPath();
          if (isSuccess) {
            LOG.info("Add index [{0}] [{1}/{2}]", directory, shard, table);
            indexWriter.addIndexes(directory);
            LOG.info("Removing delete markers [{0}] on [{1}/{2}]", directory, shard, table);
            indexWriter.deleteDocuments(new Term(BlurConstants.DELETE_MARKER, BlurConstants.DELETE_MARKER_VALUE));
            LOG.info("Finishing import [{0}], commiting on [{1}/{2}]", directory, shard, table);
            indexWriter.commit();
            indexWriter.maybeMerge();
            LOG.info("Cleaning up old directory [{0}] for [{1}/{2}]", dirPath, shard, table);
            fileSystem.delete(dirPath, true);

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      doc.add(newField("body","body", Field.Store.NO, Field.Index.NOT_ANALYZED));
      writer.addDocument(doc);
    }
    
    writer.optimize();
    writer.deleteDocuments(new Term("id","0"));
    writer.close();


    IndexReader reader = IndexReader.open(dir, true);
    IndexSearcher search = newSearcher(reader);
    assertTrue(reader.hasDeletions());

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