[jira] Commented: (SOLR-49) PATCH: XSLTServletFilter

["Hoss Man (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/SOLR-49?page=comments#action_12442978 ] 
            
Hoss Man commented on SOLR-49:
------------------------------

I'm going to try and review this again today.

> PATCH: XSLTServletFilter
> ------------------------
>
>                 Key: SOLR-49
>                 URL: http://issues.apache.org/jira/browse/SOLR-49
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>         Environment: Tested on macosx 10.4.7, JDK 1.5.0_06
>            Reporter: Bertrand Delacretaz
>         Assigned To: Hoss Man
>            Priority: Minor
>         Attachments: solr-XSLTResponseWriter-20060922.tar.gz, solr-XSLTResponseWriter-20061016.tar.gz, solr-XSLTResponseWriter-files.tar.gz, xslt-filter-files.tar.gz
>
>
> Patch that implements server-side XSLT transforms of query results.
> The filter is activated by using select/html instead of select/ to run queries, and optionally adding a transform parameter to specify the XSLT transform to use, for example:
>   http://localhost:8983/solr/select/html?q=usage&transform=my.xsl
> In which case my.xsl should be found in solr/conf/xslt/ with the example configuration. The default transform (solr/conf/xslt/query-to-html.xsl) outputs a simplistic HTML format.
> Performance is suboptimal, as the filter reparses the XML output generated by Solr. Modifying the XMLWriter to output to a ContentHandler would be more efficient, but I didn't have time to go that far.
> The TransformerProvider trivially caches the last Transformer used, could be improved using an LRU cache of several transformers, I haven't checked if Solr's infrastructure contains such an animal already.
> The patch is all new files, except for adding this in web.xml before the first <servlet>:
>   <filter>
>     <filter-name>xslt</filter-name>
>     <filter-class>org.apache.solr.xslt.XSLTServletFilter</filter-class>
>   </filter>
>   <!-- apply the XSLT filter when select/html is used to make queries -->  
>   <filter-mapping>
>     <filter-name>xslt</filter-name>
>     <url-pattern>/select/html/*</url-pattern>
>   </filter-mapping> 
> I've left the client-side XSLT stuff (stylesheet parameter) as is for the moment.

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