fix GSA filter query assignment

- use more parameter constants

source/net/yacy/cora/federate/solr/responsewriter/GSAResponseWriter.java

@@ -40,6 +40,7 @@ import net.yacy.search.schema.CollectionSchema;
 
 import org.apache.lucene.document.Document;
 import org.apache.lucene.index.IndexableField;
+import org.apache.solr.common.params.CommonParams;
 import org.apache.solr.common.util.NamedList;
 import org.apache.solr.common.util.SimpleOrderedMap;
 import org.apache.solr.common.util.XML;
@@ -154,7 +155,7 @@ public class GSAResponseWriter implements QueryResponseWriter {
         // parse response header
         ResHead resHead = new ResHead();
         NamedList<?> val0 = (NamedList<?>) responseHeader.get("params");
-        resHead.rows = Integer.parseInt((String) val0.get("rows"));
+        resHead.rows = Integer.parseInt((String) val0.get(CommonParams.ROWS));
         resHead.offset = response.offset(); // equal to 'start'
         resHead.numFound = response.matches();
         //resHead.df = (String) val0.get("df");
@@ -200,14 +201,14 @@ public class GSAResponseWriter implements QueryResponseWriter {
             writer.write("<NB>");
             if (prevStart >= 0) {
                 writer.write("<PU>");
-                XML.escapeCharData("/gsa/search?q=" + request.getParams().get("q") + "&site=" + site +
+                XML.escapeCharData("/gsa/search?q=" + request.getParams().get(CommonParams.Q) + "&site=" + site +
                          "&lr=&ie=UTF-8&oe=UTF-8&output=xml_no_dtd&client=" + client + "&access=" + access +
                          "&sort=" + sort + "&start=" + prevStart + "&sa=N", writer); // a relative URL pointing to the NEXT results page.
                 writer.write("</PU>");
             }
             if (nextNum > 0) {
                 writer.write("<NU>");
-                XML.escapeCharData("/gsa/search?q=" + request.getParams().get("q") + "&site=" + site +
+                XML.escapeCharData("/gsa/search?q=" + request.getParams().get(CommonParams.Q) + "&site=" + site +
                          "&lr=&ie=UTF-8&oe=UTF-8&output=xml_no_dtd&client=" + client + "&access=" + access +
                          "&sort=" + sort + "&start=" + nextStart + "&num=" + nextNum + "&sa=N", writer); // a relative URL pointing to the NEXT results page.
                 writer.write("</NU>");

source/net/yacy/http/servlets/GSAsearchServlet.java

@@ -50,6 +50,7 @@ import net.yacy.server.serverObjects;
 import org.apache.solr.common.SolrDocumentList;
 import org.apache.solr.common.SolrException;
 import org.apache.solr.common.params.CommonParams;
+import org.apache.solr.common.params.DisMaxParams;
 import org.apache.solr.request.SolrQueryRequest;
 import org.apache.solr.request.SolrRequestInfo;
 import org.apache.solr.response.QueryResponseWriter;
@@ -107,7 +108,7 @@ public class GSAsearchServlet extends HttpServlet {
 
         // create post
         serverObjects post = new serverObjects();
-        post.put("q", ""); post.put("num", "0");
+        post.put(CommonParams.Q, ""); post.put("num", "0");
         // convert servletrequest parameter to old style serverObjects map
         Map<String, String[]> map = header.getParameterMap();
         Iterator<Map.Entry<String, String[]>> it = map.entrySet().iterator();
@@ -136,7 +137,7 @@ public class GSAsearchServlet extends HttpServlet {
         post.put(CommonParams.ROWS, Math.min(post.getInt(CommonParams.ROWS, 10), (authenticated) ? 100000000 : 100));
         
         // set ranking
-        if (post.containsKey("sort")) {
+        if (post.containsKey(CommonParams.SORT)) {
             // if a gsa-style sort attribute is given, use this to set the solr sort attribute
             GSAResponseWriter.Sort sort = new GSAResponseWriter.Sort(post.get(CommonParams.SORT, ""));
             String sorts = sort.toSolr();
@@ -151,8 +152,8 @@ public class GSAsearchServlet extends HttpServlet {
             String fq = ranking.getFilterQuery();
             String bq = ranking.getBoostQuery();
             String bf = ranking.getBoostFunction();
-            if (fq.length() > 0) post.put(CommonParams.FQ, bq);
+            if (fq.length() > 0) post.put(CommonParams.FQ, fq);
-            if (bq.length() > 0) post.put("bq", bq);
+            if (bq.length() > 0) post.put(DisMaxParams.BQ, bq);
             if (bf.length() > 0) post.put("boost", bf); // a boost function extension, see http://wiki.apache.org/solr/ExtendedDisMax#bf_.28Boost_Function.2C_additive.29
         }
         String daterange[] = post.remove("daterange");