Changeset 27085 for main/trunk

Timestamp:

2013-03-14T13:02:54+13:00 (11 years ago)

Author:

kjdon

Message:

added sortorder param to lucene searching

File:

• main/trunk/greenstone3/src/java/org/greenstone/gsdl3/service/GS2LuceneSearch.java (modified) (3 diffs)

main/trunk/greenstone3/src/java/org/greenstone/gsdl3/service/GS2LuceneSearch.java

@@ -38 +38 @@
 public class GS2LuceneSearch extends SharedSoleneGS2FieldSearch
 {
+
+  protected static final String SORT_ORDER_PARAM = "sortOrder";
+  protected static final String SORT_ORDER_DESCENDING = "1";
+  protected static final String SORT_ORDER_ASCENDING = "0";
+
     static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.GS2LuceneSearch.class.getName());
 
@@ -53 +58 @@
     }
 
+    /** add in the Lucene specific params to TextQuery */
+    protected void addCustomQueryParams(Element param_list, String lang)
+    {
+        super.addCustomQueryParams(param_list, lang);
+        /** Lucene's/Solr's rank param is based on index fields, not ranked/not */
+        createParameter(SORT_ORDER_PARAM, param_list, lang);
+    }
+  
+  /** create a param and add to the list */
+  protected void createParameter(String name, Element param_list, String lang)
+    {
+      Element param = null;
+      if (name.equals(SORT_ORDER_PARAM)) {
+        String[] vals = { SORT_ORDER_ASCENDING, SORT_ORDER_DESCENDING };
+        String[] vals_texts = { getTextString("param." + SORT_ORDER_PARAM + "." + SORT_ORDER_ASCENDING, lang), getTextString("param." + SORT_ORDER_PARAM + "." + SORT_ORDER_DESCENDING, lang) };
+
+        param = GSXML.createParameterDescription(this.doc, SORT_ORDER_PARAM, getTextString("param." + SORT_ORDER_PARAM, lang), GSXML.PARAM_TYPE_ENUM_SINGLE, SORT_ORDER_ASCENDING, vals, vals_texts);
+      }
+      
+      if (param != null)
+        {
+          param_list.appendChild(param);
+        }
+      else
+        {
+          super.createParameter(name, param_list, lang);
+        }
+    }
     /** methods to handle actually doing the query */
 
@@ -107 +140 @@
                 this.lucene_src.setSortField(value);
             }
+            else if (name.equals(SORT_ORDER_PARAM)) {
+                if (value.equals(SORT_ORDER_DESCENDING)) {
+                  this.lucene_src.setReverseSort();
+                }
+              }
             else if (name.equals(LEVEL_PARAM))
             {