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

    taxoWriter.commit();


    // delete the docs that were marked for deletion. note that the 'dummy'
    // category is not removed from the taxonomy, so must account for it when we
    // verify the migrated index.
    indexWriter.deleteDocuments(new Term("del", "key"));
    indexWriter.commit();
    
    IOUtils.close(indexWriter, taxoWriter);
    
    return expectedCounts;

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        Term bbb = new Term("content", "bbb");
        
        reader.close();
        
        dir.tweakBufferSizes();
        writer.deleteDocuments(new Term("id", "0"));
        reader = DirectoryReader.open(writer, true);
        IndexSearcher searcher = newSearcher(reader);
        ScoreDoc[] hits = searcher.search(new TermQuery(bbb), null, 1000).scoreDocs;
        dir.tweakBufferSizes();
        assertEquals(36, hits.length);

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        assertEquals(36, hits.length);
        
        reader.close();
        
        dir.tweakBufferSizes();
        writer.deleteDocuments(new Term("id", "4"));
        reader = DirectoryReader.open(writer, true);
        searcher = newSearcher(reader);


        hits = searcher.search(new TermQuery(bbb), null, 1000).scoreDocs;
        dir.tweakBufferSizes();

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    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.forceMerge(1);
    writer.close();
  }

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    * @param term
    */
   public static void removeByTerm(Directory dir, String term) throws IOException {
      IndexWriterConfig indexWriterConfig = new IndexWriterConfig(LuceneSettings.LUCENE_VERSION, LuceneSettings.analyzer);
      IndexWriter iw = new IndexWriter(dir, indexWriterConfig);
      iw.deleteDocuments(new Term("body", term));
      iw.commit();
      iw.close();
   }


   /**

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    * @param string
    */
   public static void removeByTerm(Directory dir, String term) throws IOException {
      IndexWriterConfig indexWriterConfig = new IndexWriterConfig(LuceneSettings.LUCENE_VERSION, LuceneSettings.analyzer);
      IndexWriter iw = new IndexWriter(dir, indexWriterConfig);
      iw.deleteDocuments(new Term("body", term));
      iw.commit();
      iw.close();
   }


   /**

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        reader = refreshReader(reader);
        IndexSearcher searcher = new IndexSearcher(reader);
        assertThat(Lucene.count(searcher, new ConstantScoreQuery(filterCache.cache(new TermFilter(new Term("id", "1")))), -1), equalTo(1l));
        assertThat(Lucene.count(searcher, new FilteredQuery(new MatchAllDocsQuery(), filterCache.cache(new TermFilter(new Term("id", "1")))), -1), equalTo(1l));


        indexWriter.deleteDocuments(new Term("id", "1"));
        reader = refreshReader(reader);
        searcher = new IndexSearcher(reader);
        TermFilter filter = new TermFilter(new Term("id", "1"));
        Filter cachedFilter = filterCache.cache(filter);
        long constantScoreCount = filter == cachedFilter ? 0 : 1;

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        writer.updateDocument(new Term("_uid", "1"), doc);
        reader = reader.reopen();
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(3l));
        assertThat(UidField.loadDocIdAndVersion(reader, new Term("_uid", "1")).version, equalTo(3l));


        writer.deleteDocuments(new Term("_uid", "1"));
        reader = reader.reopen();
        assertThat(UidField.loadVersion(reader, new Term("_uid", "1")), equalTo(-1l));
        assertThat(UidField.loadDocIdAndVersion(reader, new Term("_uid", "1")), nullValue());
    }
}

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            if (delete.aliasFilter() == null) {
                query = delete.query();
            } else {
                query = new FilteredQuery(delete.query(), delete.aliasFilter());
            }
            writer.deleteDocuments(query);
            translog.add(new Translog.DeleteByQuery(delete));
            dirty = true;
            possibleMergeNeeded = true;
            flushNeeded = true;
        } catch (IOException e) {

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    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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