Integration of Tomcat7 + JDK7 + Solr4 + Carrot2 - .XML files.

source-solr-attributes.xml

<attribute-sets default="overridden-attributes">
  <attribute-set id="overridden-attributes">
    <value-set>
      <label>overridden-attributes</label>
 
      <!--
 
      Below are some attributes of this component you can change. Please see
 
        http://download.carrot2.org/head/manual/#section.customizing.component-suites-and-attributes.component-attributes
 
      for tools that will help you to edit this file.
      -->
 
 
      <attribute key="SolrDocumentSource.serviceUrlBase">
        <value type="java.lang.String" value="http://localhost:8983/solr/clustering"/>
      </attribute>
      <attribute key="SolrDocumentSource.solrSummaryFieldName">
        <value type="java.lang.String" value="teaser"/>
      </attribute>
      <attribute key="SolrDocumentSource.solrTitleFieldName">
        <value type="java.lang.String" value="label"/>
      </attribute>
      <attribute key="SolrDocumentSource.solrUrlFieldName">
        <value type="java.lang.String" value="url"/>
      </attribute>
      <!-- Proxy clusters from Solr. Link on 'name' field. -->
      <attribute key="SolrDocumentSource.solrIdFieldName">
        <value type="java.lang.String" value="id"/>
      </attribute>
      <attribute key="SolrDocumentSource.readClusters">
        <value value="true"/>
      </attribute>
    </value-set>
  </attribute-set>
</attribute-sets>

cat /var/lib/tomcat7/webapps/carrot2/WEB-INF/suites/source-solr-attributes.xml