Would it be hard to alter this slightly to use a "script" style tag
my rationale is I would like to say something like
<script type="text/python">
def duplicate(doc):
return doc.doubleval("foo_pd") * 2
</script>
and I am sure others would like to say ruby, scala, clojure ..... etc
etc etc
-- Greg
On 14/11/11 17:50, Emmanuel Espina wrote:
I'm going to generate some controversy with this one.
I created a proof of concept to add javascript functions to Solr and
use them as function queries. The objective of all this is to provide
an easy way to extend the function queries and to simplify its syntax
and readability. I would appreciate your opinions, in particular,
regarding the possibility of creating a Jira ticket requesting this
functionality (not necessarily to add this POC, but to initiate a
discussion)
About the POC:
https://github.com/espinaemmanuel/ScriptFq
It is a ValueSource that gets a script from the solrconfig:
<valueSourceParser name="js"
class="org.apache.solr.scriptfq.ScriptValueSourceParser">
<str name="script"><![CDATA[
function duplicate(doc){
return doc.doubleVal("foo_pd")*2;
}
]]></str>
</valueSourceParser>
Where "doc" represents the current document
Then to use it you call something like:
http://localhost:8983:/solr/select?defType=edismax&q=*:*&*bf=js(duplicate)*
*
*
*Regarding the performance*, I've tested it with the standard engine
(Rhino) and, of course, it completely sucks. But in a recent post that
I published I show that using Google's V8 you can get incredible
performance boost of javascript:
http://www.lucidimagination.com/blog/2011/11/10/performance-of-googles-v8-javascript-engine-in-solr/
However, I tried my POC with V8 in the same way I tested DIH in the
post but I didn't succed. One of those horrible JNI errors that kills
the JVM arises and I could't track it. Probably its a bug with jav8
(the V8 wrapper that I used)
Thank you
*Emmanuel Espina | Lucid Imagination <http://www.lucidimagination.com/>
*T 1 650 353 4057 ext. 152
E emmanuel.espina @lucidimagination.com <http://lucidimagination.com>
