pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / queryparser / src / java / org / apache / lucene / queryParser / standard / config / FieldBoostMapFCListener.java

diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/config/FieldBoostMapFCListener.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/config/FieldBoostMapFCListener.java
new file mode 100644 (file)
index 0000000..85b5226
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/config/FieldBoostMapFCListener.java
@@ -0,0 +1,66 @@
+package org.apache.lucene.queryParser.standard.config;
+
+/**
+ * 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.
+ */
+
+import java.util.Map;
+
+import org.apache.lucene.queryParser.core.config.FieldConfig;
+import org.apache.lucene.queryParser.core.config.FieldConfigListener;
+import org.apache.lucene.queryParser.core.config.QueryConfigHandler;
+import org.apache.lucene.queryParser.standard.config.StandardQueryConfigHandler.ConfigurationKeys;
+
+/**
+ * This listener listens for every field configuration request and assign a
+ * {@link ConfigurationKeys#BOOST} to the
+ * equivalent {@link FieldConfig} based on a defined map: fieldName -> boostValue stored in
+ * {@link ConfigurationKeys#FIELD_BOOST_MAP}.
+ * 
+ * @see ConfigurationKeys#FIELD_BOOST_MAP
+ * @see ConfigurationKeys#BOOST
+ * @see FieldConfig
+ * @see FieldConfigListener
+ */
+public class FieldBoostMapFCListener implements FieldConfigListener {
+
+  private static final long serialVersionUID = -5929802948798314067L;
+
+  private QueryConfigHandler config = null;
+  
+  public FieldBoostMapFCListener(QueryConfigHandler config) {
+    this.config = config;
+  }
+
+  public void buildFieldConfig(FieldConfig fieldConfig) {
+    Map<String, Float> fieldBoostMap = this.config.get(ConfigurationKeys.FIELD_BOOST_MAP);
+    
+    if (fieldBoostMap != null) {
+      Float boost = fieldBoostMap.get(fieldConfig.getField());
+
+      if (boost != null) {
+        
+        fieldConfig.addAttribute(BoostAttribute.class).setBoost(boost);
+        
+        // uncomment code below when deprecated query parser attributes are removed
+        // fieldConfig.set(ConfigurationKeys.BOOST, boost);
+        
+      }
+
+    }
+  }
+
+}