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

      }
    }
    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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        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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    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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                                      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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        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 + "/")));
            this.context.indexUpdate();
        } catch (IOException e) {
            throw new CommitFailedException(
                    "Lucene", 5, "Failed to remove the index entries of"

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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 + "/")));
            this.context.indexUpdate();
        } catch (IOException e) {
            throw new CommitFailedException(
                    "Lucene", 5, "Failed to remove the index entries of"
                    + " the removed subtree " + path, e);

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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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    * @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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