update and search in parallel

[umamahesh bayireddya]

hi all

I have two question:
1) Is it possible to update and search a document in parallel ?
2) Is it possible to update and delete a document in parallel ?


my code for update:
public void updateIndexDoc(String url) throws Exception {
        PropertiesHandler ph;
       ph = new PropertiesHandler();
       indexdir = ph.getProperty("index");
       File f = new File(url);
       Directory directory = FSDirectory.getDirectory(indexdir, false);
       IndexReader reader = IndexReader.open(directory);

        int j =-1;
       for(int i =0; i<reader.numDocs();i++)
        {
            if(!reader.isDeleted(i))
            {
            Document d = reader.document(i);
            String url1 = d.get("url");
            if(url1.equals(url))
            {
          System.out.println(url1);
                j=i;
            }
            }
        }
         if(j!=-1)
       reader.delete(j);
       reader.close();
       directory.close();
       create = false;
       writer = new IndexWriter(indexdir, new StandardAnalyzer(), create);
       writer.maxFieldLength = 1000000;
       addIndexDoc(f);
      writer.optimize();
       writer.close();
   }

public void deleteIndexDoc(String url)
           throws IOException {
       PropertiesHandler ph;
       ph = new PropertiesHandler();
       indexdir = ph.getProperty("index");
       File f = new File(url);
       Directory directory = FSDirectory.getDirectory(indexdir, false);

       IndexReader reader = IndexReader.open(directory);

        int j =-1;
       for(int i =0; i<reader.numDocs();i++)
        {
            if(!reader.isDeleted(i))
            {
            Document d = reader.document(i);
            String url1 = d.get("url");
            if(url1.equals(url))
            {
          System.out.println(url1);
                j=i;
            }
            }
        }
             if(j!=-1)
       reader.delete(j);
       reader.close();
       directory.close();
   }



thanks

mahesh

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