/**
  * conversion from a SolrQueryResponse (which is a solr-internal data format) to SolrDocumentList
  * (which is a solrj-format) The conversion is done inside the solrj api using the
  * BinaryResponseWriter and a very complex unfolding process via
  * org.apache.solr.common.util.JavaBinCodec.marshal.
  *
  * @param request
  * @param sqr
  * @return
  */
 public SolrDocumentList SolrQueryResponse2SolrDocumentList(
     final SolrQueryRequest req, final SolrQueryResponse rsp) {
   SolrDocumentList sdl = new SolrDocumentList();
   NamedList<?> nl = rsp.getValues();
   ResultContext resultContext = (ResultContext) nl.get("response");
   DocList response =
       resultContext == null
           ? new DocSlice(0, 0, new int[0], new float[0], 0, 0.0f)
           : resultContext.docs;
   sdl.setNumFound(response == null ? 0 : response.matches());
   sdl.setStart(response == null ? 0 : response.offset());
   String originalName = Thread.currentThread().getName();
   if (response != null) {
     try {
       SolrIndexSearcher searcher = req.getSearcher();
       final int responseCount = response.size();
       DocIterator iterator = response.iterator();
       for (int i = 0; i < responseCount; i++) {
         int docid = iterator.nextDoc();
         Thread.currentThread()
             .setName("EmbeddedSolrConnector.SolrQueryResponse2SolrDocumentList: " + docid);
         Document responsedoc = searcher.doc(docid, (Set<String>) null);
         SolrDocument sordoc = doc2SolrDoc(responsedoc);
         sdl.add(sordoc);
       }
     } catch (IOException e) {
       ConcurrentLog.logException(e);
     }
   }
   Thread.currentThread().setName(originalName);
   return sdl;
 }
  @Override
  public void writeDocList(String name, DocList ids, Set<String> fields, Map otherFields)
      throws IOException {
    boolean includeScore = false;
    if (fields != null) {
      includeScore = fields.contains("score");
      if (fields.size() == 0 || (fields.size() == 1 && includeScore) || fields.contains("*")) {
        fields = null; // null means return all stored fields
      }
    }

    int sz = ids.size();

    writeMapOpener(includeScore ? 4 : 3);
    incLevel();
    writeKey("numFound", false);
    writeInt(null, ids.matches());
    writeMapSeparator();
    writeKey("start", false);
    writeInt(null, ids.offset());

    if (includeScore) {
      writeMapSeparator();
      writeKey("maxScore", false);
      writeFloat(null, ids.maxScore());
    }
    writeMapSeparator();
    // indent();
    writeKey("docs", false);
    writeArrayOpener(sz);

    incLevel();
    boolean first = true;

    SolrIndexSearcher searcher = req.getSearcher();
    DocIterator iterator = ids.iterator();
    for (int i = 0; i < sz; i++) {
      int id = iterator.nextDoc();
      Document doc = searcher.doc(id, fields);

      if (first) {
        first = false;
      } else {
        writeArraySeparator();
      }
      indent();
      writeDoc(null, doc, fields, (includeScore ? iterator.score() : 0.0f), includeScore);
    }
    decLevel();
    writeArrayCloser();

    if (otherFields != null) {
      writeMap(null, otherFields, true, false);
    }

    decLevel();
    indent();
    writeMapCloser();
  }