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

                                      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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      doc.add(new Field(ArtifactInfo.DELETED, uinfo, Field.Store.YES, Field.Index.NO));
      doc.add(new Field(ArtifactInfo.LAST_MODIFIED, //
          Long.toString(System.currentTimeMillis()), Field.Store.YES, Field.Index.NO));
      IndexWriter w = context.getIndexWriter();
      w.addDocument(doc);
      w.deleteDocuments(new Term(ArtifactInfo.UINFO, uinfo));
      return IndexOp.DELETED;
    }
    return IndexOp.NOOP;
  }

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    private void storeDescriptor()
        throws IOException
    {
        IndexWriter w = getIndexWriter();


        w.deleteDocuments( DESCRIPTOR_TERM );


        Document hdr = new Document();


        hdr.add( new Field( FLD_DESCRIPTOR, FLD_DESCRIPTOR_CONTENTS, Field.Store.YES, Field.Index.UN_TOKENIZED ) );

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    public void remove( IndexingContext context, ArtifactContext ac )
        throws IOException
    {
        IndexWriter w = context.getIndexWriter();
        
        w.deleteDocuments( getKeyTerm( ac ) );


        w.flush();
        
        context.updateTimestamp();
    }

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        final IndexWriter writer = new IndexWriter(new NIOFSDirectory(this.store), Configuration.WRITER_CFG);


        final QueryParser queryParser = new QueryParser(Configuration.VERSION, "", Configuration.ANALYZER);
        try {
            final Query validQuery = queryParser.parse(this.query);
            writer.deleteDocuments(validQuery);
        }
        catch (final ParseException e) {
            logger.error("Malformed lucene query: {}", e.getMessage());
            logger.trace("Stacktrace", e.fillInStackTrace());
        }

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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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    bq.add(new MatchAllDocsQuery(), BooleanClause.Occur.MUST);
    bq.add(new TermQuery(new Term("key", "three")), BooleanClause.Occur.MUST);
    hits = is.search(bq, null, 1000).scoreDocs;
    assertEquals(1, hits.length);


    iw.deleteDocuments(new Term("key", "one"));
    ir.close();
    ir = DirectoryReader.open(iw, true);
    is = newSearcher(ir);
    
    hits = is.search(new MatchAllDocsQuery(), null, 1000).scoreDocs;

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                  }
                }


                if (allIDs.size() > 0 && threadRandom.nextDouble() <= deleteChance) {
                  String randomID = allIDs.get(threadRandom.nextInt(allIDs.size()));
                  w.deleteDocuments(new Term("id", randomID));
                  rt.delete(randomID);
                  values.put(randomID, missing);
                }


                if (threadRandom.nextDouble() <= reopenChance || rt.size() > 10000) {

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      doc.add(newStringField("body", "body", Field.Store.NO));
      writer.addDocument(doc);
    }
    
    writer.forceMerge(1);
    writer.deleteDocuments(new Term("id","0"));
    writer.close();


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

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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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