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From "Hondros, Constantine" <Constantine.Hond...@nl.compuware.com>
Subject RE: Lucene as xml store
Date Fri, 22 Jul 2005 09:01:24 GMT
You are better off using an XML database like 

http://xml.apache.org/xindice/
or
http://exist.sourceforge.net/

... which will allow you to perform fast XPath queries on your XML data.

-----Original Message-----
From: Namrata Kumari [mailto:Nkumari@saba.com]
Sent: 22 July 2005 10:37
To: general@lucene.apache.org
Subject: RE: Lucene as xml store


Hey Erik,

Thanks for the info.

- Well, the application I want to develop is more like storing xml files and
with each of them having different structure. And then performing search on
them that in turn can depend on the structure of the xml doc and user's
requirement.

- Moreover, I did not exactly understood as to how I can store the xml
document. I mean, I went through the java doc and couldnot figure out the
api's that could be used for this purpose. Can you guide me in this?

- But the biggest question is: Is Lucene a good option [which now I doubt on
the basis of what I have read till now :-(]

Regards,
Namrata


-----Original Message-----
From: Erik Hatcher [mailto:erik@ehatchersolutions.com] 
Sent: Friday, July 22, 2005 2:11 PM
To: general@lucene.apache.org
Subject: Re: Lucene as xml store


On Jul 22, 2005, at 1:07 AM, Namrata Kumari wrote:

>
> hi,
>
> I am a beginner to lucene , So kindly excuse me if the questions 
> mentioned a bit naive.
> - Can I use lucene as an xml store + search engine?
> - What I understood is that if we want to perform search on xml doc. 
> we need to parse xml document, form indexes and on the basis of fields 
> perform search.
> - So, does this mean, that even if we use lucene as xml store (IF WE 
> CAN!!), we need to parse it to form indexes?

Lucene is a search engine and only deals with text (Strings essentially).
Lucene is also a flat document space and doing queries for things
hierarchical is not how it was designed, but it can be done to a limited
degree depending on how data is indexed.

Yes, Lucene can store text as well as make it searchable - so you could
store an XML document in it as well.

You have not provided any information on the types of queries you need to
support or what the user experience will be like.  There are many ways to
use Lucene and whether it is suitable solution to your  
application depends on that information.   Tell us more about what  
you're wanting to do and we can guide you further.

> Please reply to this as soon as possible

That's what they all say!   :)   No need to say such a thing - if you  
have well articulated questions that are straightforward enough to answer,
you'll get responses quickly here.

     Erik


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