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From paolo berto <>
Subject Re: webserverless search with lucene on offline HTML doc
Date Mon, 20 Feb 2006 12:48:48 GMT
On Feb 20, 2006, at 12:42 PM, Fabio Insaccanebbia wrote:

> Wouldn't this be a good case for the JarDirectory implementation
> somebody asked for?
> The index could then be statically written in a jar file downloaded
> with the applet (the original mail refers to static offline HTML
> files).
> It could even be a great idea for improving the Maven site-plugin :-)
> [I mean: when you create the Maven generated site a Lucene based
> plugin could index it, create the jar index and then add the "applet"
> to the Maven pages]

I have no idea what was asked since I just registered to this mailing  
but what I would like to end up is my HTML folder with our software  
documentation, then a search.jar file which contains all my index and  
then, with a simple java applet be able to query such file and  
provide results always in the applet page.


> On 2/20/06, Trieschnigg, R.B. (Dolf)  
> <> wrote:
>> Hi Paulo,
>> The main problem is that Lucene needs to store its index on a disk  
>> which under normal circumstances an applet may not read. The  
>> applet operates in a sandbox, which only allows "safe" operations.  
>> Reading and writing to disk is not allowed. An applet can only get  
>> resources from the host it came from.
>> As Lucene does not allow an IndexReader to be created for a URL, I  
>> guess it's not possible in a normal applet environment. Or you  
>> should dive into the IndexReader code an write your own  
>> IndexReader for remote indices.
>> What you can also do is sign your applet; if a user accepts your  
>> applet as safe you can run it as any other Java application  
>> (download the index from a webserver to a temporary location and  
>> query it for example).
>> But I am usually quite sceptic with accepting signed applets from  
>> unkown distributors; as it is like leaving your door open for  
>> complete strangers ("of course you may delete all my files on disk").
>> Are you going to put your applet on a website, or do you want to  
>> distribute it on e.g. a cd? If I would buy some software from you  
>> on a cd, I would more likely accept a signed applet than if I  
>> would visit some obscure homepage.
>> Regards,
>> Dolf
>>> -----Original Message-----
>>> From: paolo berto []
>>> Sent: maandag 20 februari 2006 11:44
>>> To:
>>> Subject: webserverless search with lucene on offline HTML doc
>>> Hello,
>>> I would like to figure out if it is possible to write a java
>>> applet able to search with lucene through an HTML
>>> documentation WITHOUT having a webserver installed on the
>>> system and on multiple platforms.
>>> So I have a set of static offline HTML files forming a
>>> software documentation, would like to index it and search
>>> through it from a browser without having to install a web
>>> server and on various platforms (osx/win32/linux) Is that
>>> possible at all?
>>> Thanks and sorry for the basic question,
>>> paolo
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