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From Erik Hatcher <e...@ehatchersolutions.com>
Subject Re: How I created a Struts search facility
Date Sat, 13 Sep 2003 07:58:41 GMT
Well done!


On Friday, September 12, 2003, at 10:16  PM, Marco Tedone wrote:

> Hi , I would like to share with you the solution I chose at the end to
> create a search facility for my Struts application. Basically, I 
> followed
> the Erik's suggestion to realize something independent from the actual
> Struts architectural choice (Tiles, <jsp:include>, and so on), and a 
> couple
> of Robert Taylor's email gave me the inspiration. Particularly, I 
> realized
> that if I could simulate in someway a request to a Struts Action and 
> write
> the response content to a file, well, I had a file ready to be indexed 
> by
> Lucene. I had a look at the Java Cookbook, and Darwin gave me the 
> solution:
>
> 1) I created a Struts Action which reads all the Actions in the
> configuration file which have a parameter forwarding to a jsp page and
> creates a collection with those information;
>
> 2) I created a Session bean which receives this collection as parameter
> (thus, a collection of Action mappings, like
> http://myserver/myapp/Login.do), reads the stream for each URL and 
> saves the
> content in a file. Here I had a good idea: to name the file with the 
> same
> name as the action, only replacing the protocol separator with '@' and 
> the
> folder separator with '_' (underscore). The result is a folder with 
> files
> containing the real HTML as we would see in the source after visiting a
> link, named http@__myserver_myapp_Login.do;
>
> 3) I run the real Lucene index, pointing to the folder where all the 
> above
> mentioned files are located;
>
> 4) I run a query
>
> 5) I convert back the returned paths replacing '@' with ':' and '_' 
> with
> '/'.
>
> Simple as that: I now have a collection of actions which the user can 
> click
> on, which will result in HTML page containing the content the user was
> interested in.
>
> This is only the beginning: obviously many optimization may be done: 
> for
> instance caching the results, giving the possibility to choose the
> separators (both for protocol and folder), organizing the configuration
> information in a XML configuration file and so on...
>
> Hope this will help,
>
> Marco
>
>
>
>
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