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From David Miranda <david.b.mira...@gmail.com>
Subject Re: Lucene Concurrent Search
Date Thu, 05 Sep 2013 14:53:46 GMT
Hi,

I'm trying to implement my code with SearchManager to make  my app
thread-safe. I'm follow this post:
http://blog.mikemccandless.com/2011/09/lucenes-searchermanager-simplifies.html

There is a class that implements "SearchWarmer". I can't find this class in
the Lucene library, what class is that?

Thanks.


2013/9/5 Aditya <findbestopensource@gmail.com>

> Hi
>
> You want to use REST service for your search, then my advice would be to
> use Solr. As it has buitl-in functionality of REST API.
>
> If you want to use Lucene then below are my comments:
> 1. In do search function, you are creating reader object. If this call is
> invoked for every query then it would be very expensive. You need to create
> it once globally and re opon it, if the index is modified. Its better use
> SearchManager.
>
> Regards
> Aditya
> www.findbestopensource.com - Search from 1 Million open source projects.
>
>
>
> On Thu, Sep 5, 2013 at 6:46 AM, David Miranda <david.b.miranda@gmail.com
> >wrote:
>
> > Hi,
> >
> > I'm developing a web application, that contains a REST service in the
> > Tomcat, that receives several requests per second.
> > The REST requests do research in a Lucene index, to do this i use the
> > IndexSearch.
> >
> > My questions are:
> > - There are concurrency problems in multiple research?
> > - What the best design pattern to do this?
> >
> > public class IndexResearch(){
> > >   private static int MAX_HITS = 500;
> > >   private static String DIRECTORY = "indexdir";
> > >   private IndexSearcher searcher;
> > >   private StandardAnalyzer analyzer;
> > >
> >
> >
> >
> > >   public IndexResearch(){
> > >   }
> > >   public String doSearch(String text){
> > >      analyzer = new StandardAnalyzer(Version.LUCENE_43);
> > >      topic = QueryParser.escape(topic);
> > >      Query q = new QueryParser(Version.LUCENE_43, "field", analyzer
> > > ).parse(text);
> > >      File indexDirectory = new File(DIRECTORY);
> > >      IndexReader reader;
> > >      reader = DirectoryReader.open(FSDirectory.open(indexDirectory));
> > >      searcher = new IndexSearcher(reader);
> > >
> >         /*more code*/
> >
> > >    }
> > > }
> >
> >
> > Can I create, in the servlet, one object of this class per client request
> > (Is that the best design pattern)?
> >
> > Thanks in advance.
> >
>



-- 
Cumprimentos,
David Miranda

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