topic Re: Show search results with excerpts (like Google) in Alfresco Archive

Show search results with excerpts (like Google)

nicolasraoul — Mon, 10 May 2010 02:30:13 GMT

I am dreaming of a search UI that would show a text excerpt for each search result.Does this already exist in Alfresco?Or do I have to develop a specific Dialog that would call Lucene?Or maybe it is not even possible to do this with Lucene?Thanks a lot!NicolasNote:Because I am searching only text fi

Re: Show search results with excerpts (like Google)

zaizi — Mon, 10 May 2010 20:20:04 GMT

Yes this is doable. We've implemented this for a customer project. You can use Lucene for selecting best text excerpts and display it in Alfresco results.

DM me for details.
Ainga

Re: Show search results with excerpts (like Google)

nicolasraoul — Tue, 11 May 2010 01:22:54 GMT

I am actually asking this question because someone asked on the Japanese forum, and I did not know the answer so I asked on the English forum. Here is the original message: http://forums.alfresco.com/jp/viewtopic.php?f=4&t=530

Does it require development or is it just configuration/Spring?

Thanks a lot!
Nicolas

Re: Show search results with excerpts (like Google)

zaizi — Wed, 30 Jun 2010 08:38:17 GMT

Yes, it requires development. You can utilise Lucene to provide the hit highlighting functionality. See http://www.cocooncenter.org/articles/lucene.html.

However to enable to Lucene to do that you'll need to extend Alfresco through Java coding. For one Alfresco's lucene index does not store the complete text just the index. The text needs to be stored / generated so they can be displayed in the search results. This would depend on your specific requirements.

Ainga

Re: Show search results with excerpts (like Google)

nicolasraoul — Thu, 01 Jul 2010 03:01:00 GMT

Thanks a lot! 🙂

Nicolas

Re: Show search results with excerpts (like Google)

aymens — Tue, 22 Mar 2011 16:50:02 GMT

Hello,

I implemented it for Alfresco CE 3.4.d, wrote something about it and provided an svn patch for that.

If you're interested check this: http://aymen-s.blogspot.com/2011/03/implementing-search-hits-highlight-in.html

Regards,

Re: Show search results with excerpts (like Google)

nicolasraoul — Tue, 22 Mar 2011 17:03:07 GMT

Thanks aymens, that looks great!
Nicolas

Re: Show search results with excerpts (like Google)

zaizi — Tue, 22 Mar 2011 17:22:35 GMT

We tried this approach first and then changed it because the Lucene index was growing quite large in production. Instead we created a child association to the content and stored the text version in the repository. Similar to how renditions are stored.

Ainga

Re: Show search results with excerpts (like Google)

aymens — Wed, 23 Mar 2011 03:59:06 GMT

Hi Ainga,

That would require querying node service for each node to get content at LuceneResultSet level.

That may slow down search response time significantly, but if index size becomes too big to put up with, one should choose your solution for content storage.

Thanks,

Re: Show search results with excerpts (like Google)

aymens — Wed, 23 Mar 2011 04:00:39 GMT

Thanks aymens, that looks great!
Nicolas

You're welcome