Configuring collapseComponent in apachesolr

I have applied the collapsecomponent patch to solr 3.1.0

My question is , how do 开发者_StackOverflowI configure it in solrconfig.xml?

What needs to be added.

Right now I have added the following and its giving me a classnotfound exception for the collapsecomponent class: http://pastebin.com/S6AQiVq1

Any ideas?

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Add the class to solrconfig:

<searchComponent name="collapse" class="org.apache.solr.handler.component.CollapseComponent">