uncommented firstSearcher in solrconfig.xml, got exception

[Walter Ferrara]

(I don't know if this is a solr-user or solr-dev matter.)

By uncommenting firstSearcher event in solrconfig.xml in trunk
(downloaded from hudson  Sept.16), as in:

   <listener event="firstSearcher" class="solr.QuerySenderListener">
      <arr name="queries">
        <lst> <str name="q">fast_warm</str> <str name="start">0</str>
<str name="rows">10</str> </lst>
      </arr>
    </listener>

I got this exception:
20-set-2007 21.10.14 org.apache.solr.core.SolrCore parseListener
INFO: Searching for listeners: //[EMAIL PROTECTED]"firstSearcher"]
java.lang.InstantiationException: org.apache.solr.core.QuerySenderListener
        at java.lang.Class.newInstance0(Unknown Source)
        at java.lang.Class.newInstance(Unknown Source)
        at org.apache.solr.core.Config.newInstance(Config.java:304)
[...]

This issue is easily reproducible by using the example directory, just
uncomment firstSearcher and/or newSearcher event in the sorlconfig.xml,
and launch solr.

--
Walter