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

        try
        {
            Directory luceneDir = new SimpleFSDirectory(new File(m_luceneDirectory), null);
            writer = getIndexWriter( luceneDir );
            Query query = new TermQuery( new Term( LUCENE_ID, page.getName() ) );
            writer.deleteDocuments( query );
        }
        catch ( Exception e )
        {
            log.error("Unable to remove page '" + page.getName() + "' from Lucene index", e);
        }

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        synchronized (directory) {
            if (ids != null && ids.length > 0) {
                IndexWriter writer = new IndexWriter(directory, new SimpleAnalyzer(), IndexWriter.MaxFieldLength.LIMITED);
                try {
                    for (int i = 0; i < ids.length; i++) {
                        writer.deleteDocuments(new Term(LuceneAuditor.FIELD_ID, ids[i]));
                    }
                    writer.commit();
                } finally {
                    writer.close();
                }

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        String path = concat(getPath(), name);


        try {
            IndexWriter writer = context.getWriter();
            // Remove all index entries in the removed subtree
            writer.deleteDocuments(newPathTerm(path));
            writer.deleteDocuments(new PrefixQuery(newPathTerm(path + "/")));
        } catch (IOException e) {
            throw new CommitFailedException(
                    "Lucene", 5, "Failed to remove the index entries of"
                    + " the removed subtree " + path, e);

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        try {
            IndexWriter writer = context.getWriter();
            // Remove all index entries in the removed subtree
            writer.deleteDocuments(newPathTerm(path));
            writer.deleteDocuments(new PrefixQuery(newPathTerm(path + "/")));
        } catch (IOException e) {
            throw new CommitFailedException(
                    "Lucene", 5, "Failed to remove the index entries of"
                    + " the removed subtree " + path, e);
        }

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          log.error("Error during clear index '{}'.", indexName, e);
        }
      } else if("deindex".equalsIgnoreCase(action)) {
        final String docId = request.getParameter("docId");
        try (IndexWriter w = new IndexWriter(directory, getIndexWriterConfig(LUCENE_VERSION, analyzer))){
          w.deleteDocuments(new Term("id", docId.intern()));
          request.setAttribute("info", "Successfully deindexed doc:'" + docId + "' in index:'" + indexName + "'.");
          request.setAttribute("muted", "Successfully deindexed doc:'" + docId + "' in index:'" + indexName + "'.");
        } catch (Exception e) {
          request.setAttribute("error", "Error during deindex doc:'" + docId + "' in index:' " + indexName + "' cause:"+ e.getMessage());
          log.error("Error during deindex doc:'" + docId + "' in index:'" + indexName + "'.", e);

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    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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    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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      }
    }
    if (VERBOSE) {
      System.out.println("TEST: now delete id=77");
    }
    w.deleteDocuments(new Term("id", "77"));


    IndexReader r = DirectoryReader.open(w, true);
    
    assertEquals(NUM_DOCS-1, r.numDocs());
    IndexSearcher s = newSearcher(r);

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    r.close();


    if (VERBOSE) {
      System.out.println("\nTEST: now delete 2nd doc");
    }
    w.deleteDocuments(new Term("id", "44"));


    if (VERBOSE) {
      System.out.println("\nTEST: now force merge");
    }
    w.forceMerge(1);

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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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