// set up the solr interface
final String solrurls = getConfig("federated.service.solr.indexing.url", "http://127.0.0.1:8983/solr");
final boolean usesolr = getConfigBool("federated.service.solr.indexing.enabled", false) & solrurls.length() > 0;
try {
this.solrConnector = (usesolr) ? new SolrChardingConnector(solrurls, workingScheme, SolrChardingSelection.Method.MODULO_HOST_MD5) : null;
} catch (final IOException e) {
Log.logException(e);
this.solrConnector = null;
}