content: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.solr.core;
  
  import org.apache.solr.search.SolrIndexSearcher;
  import org.apache.solr.search.DocList;
  import org.apache.solr.search.DocIterator;
  import org.apache.solr.common.params.CommonParams;
  import org.apache.solr.common.util.NamedList;
  import org.apache.solr.request.LocalSolrQueryRequest;
  import org.apache.solr.response.SolrQueryResponse;
  
  import java.util.List;
  
  /**
   * @version $Id: QuerySenderListener.java 1137045 2011-06-17 21:49:38Z erick $
   */
  class QuerySenderListener extends AbstractSolrEventListener {
    public QuerySenderListener(SolrCore core) {
      super(core);
    }
  
    @Override
    public void newSearcher(SolrIndexSearcher newSearcher, SolrIndexSearcher currentSearcher) {
      final SolrIndexSearcher searcher = newSearcher;
      log.info("QuerySenderListener sending requests to " + newSearcher);
      List<NamedList> allLists = (List<NamedList>)args.get("queries");
      if (allLists == null) return;
      for (NamedList nlst : allLists) {
        try {
          // bind the request to a particular searcher (the newSearcher)
          NamedList params = addEventParms(currentSearcher, nlst);
          LocalSolrQueryRequest req = new LocalSolrQueryRequest(core,params) {
            @Override public SolrIndexSearcher getSearcher() { return searcher; }
            @Override public void close() { }
          };
  
          SolrQueryResponse rsp = new SolrQueryResponse();
          core.execute(core.getRequestHandler(req.getParams().get(CommonParams.QT)), req, rsp);
  
          // Retrieve the Document instances (not just the ids) to warm
          // the OS disk cache, and any Solr document cache.  Only the top
          // level values in the NamedList are checked for DocLists.
          NamedList values = rsp.getValues();
          for (int i=0; i<values.size(); i++) {
            Object o = values.getVal(i);
            if (o instanceof DocList) {
              DocList docs = (DocList)o;
              for (DocIterator iter = docs.iterator(); iter.hasNext();) {
                newSearcher.doc(iter.nextDoc());
              }
            }
          }
  
          req.close();
  
        } catch (Exception e) {
          // do nothing... we want to continue with the other requests.
          // the failure should have already been logged.
        }
      }
      log.info("QuerySenderListener done.");
    }
  
  
  }
  