SOLR-3542: add WeightedFragListBuilder

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1350436 13f79535-47bb-0310-9956-ffa450edef68

solr/CHANGES.txt

@@ -363,6 +363,9 @@ New Features
   to schema.xml's <copyField/> declaration but as an update processor that can 
   be combined with other processors in any order. (Jan Høydahl & hossman)
 
+* SOLR-3542: Add WeightedFragListBuilder for FVH and set it to default fragListBuilder
+  in example solrconfig.xml. (Sebastian Lutze, koji)
+
 Optimizations
 ----------------------
 

solr/core/src/java/org/apache/solr/highlight/WeightedFragListBuilder.java

@@ -0,0 +1,50 @@
+/**
+ * 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.highlight;
+
+import org.apache.lucene.search.vectorhighlight.FragListBuilder;
+import org.apache.solr.common.params.SolrParams;
+
+public class WeightedFragListBuilder extends HighlightingPluginBase implements 
+    SolrFragListBuilder {
+
+  @Override
+  public FragListBuilder getFragListBuilder(SolrParams params) {
+    // NOTE: This class (currently) makes no use of params
+    // If that ever changes, it should wrap them with defaults...
+    // params = SolrParams.wrapDefaults(params, defaults)
+    
+    numRequests++;
+    
+    return new org.apache.lucene.search.vectorhighlight.WeightedFragListBuilder();
+  }
+
+  ///////////////////////////////////////////////////////////////////////
+  //////////////////////// SolrInfoMBeans methods ///////////////////////
+  ///////////////////////////////////////////////////////////////////////
+
+  @Override
+  public String getDescription() {
+    return "WeightedFragListBuilder";
+  }
+
+  @Override
+  public String getSource() {
+    return "$URL: http://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x/solr/core/src/java/org/apache/solr/highlight/WeightedFragListBuilder.java $";
+  }
+}

solr/example/solr/conf/solrconfig.xml

@@ -1486,13 +1486,17 @@
 
       <!-- Configure the standard fragListBuilder -->
       <fragListBuilder name="simple" 
-                       default="true"
                        class="solr.highlight.SimpleFragListBuilder"/>
       
       <!-- Configure the single fragListBuilder -->
       <fragListBuilder name="single" 
                        class="solr.highlight.SingleFragListBuilder"/>
       
+      <!-- Configure the weighted fragListBuilder -->
+      <fragListBuilder name="weighted" 
+                       default="true"
+                       class="solr.highlight.WeightedFragListBuilder"/>
+      
       <!-- default tag FragmentsBuilder -->
       <fragmentsBuilder name="default" 
                         default="true"