X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/BoostQueryNodeProcessor.java
diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/BoostQueryNodeProcessor.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/BoostQueryNodeProcessor.java
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+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/standard/processors/BoostQueryNodeProcessor.java
@@ -0,0 +1,88 @@
+package org.apache.lucene.queryParser.standard.processors;
+
+/**
+ * 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.List;
+
+import org.apache.lucene.queryParser.core.QueryNodeException;
+import org.apache.lucene.queryParser.core.config.FieldConfig;
+import org.apache.lucene.queryParser.core.config.QueryConfigHandler;
+import org.apache.lucene.queryParser.core.nodes.BoostQueryNode;
+import org.apache.lucene.queryParser.core.nodes.FieldableNode;
+import org.apache.lucene.queryParser.core.nodes.QueryNode;
+import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl;
+import org.apache.lucene.queryParser.core.util.StringUtils;
+import org.apache.lucene.queryParser.standard.config.StandardQueryConfigHandler.ConfigurationKeys;
+
+/**
+ * This processor iterates the query node tree looking for every
+ * {@link FieldableNode} that has {@link ConfigurationKeys#BOOST} in its
+ * config. If there is, the boost is applied to that {@link FieldableNode}.
+ *
+ * @see ConfigurationKeys#BOOST
+ * @see QueryConfigHandler
+ * @see FieldableNode
+ */
+public class BoostQueryNodeProcessor extends QueryNodeProcessorImpl {
+
+ @Override
+ protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
+
+ if (node instanceof FieldableNode &&
+ (node.getParent() == null || !(node.getParent() instanceof FieldableNode))) {
+
+ FieldableNode fieldNode = (FieldableNode) node;
+ QueryConfigHandler config = getQueryConfigHandler();
+
+ if (config != null) {
+ CharSequence field = fieldNode.getField();
+ FieldConfig fieldConfig = config.getFieldConfig(StringUtils.toString(field));
+
+ if (fieldConfig != null) {
+ Float boost = fieldConfig.get(ConfigurationKeys.BOOST);
+
+ if (boost != null) {
+ return new BoostQueryNode(node, boost);
+ }
+
+ }
+
+ }
+
+ }
+
+ return node;
+
+ }
+
+ @Override
+ protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
+
+ return node;
+
+ }
+
+ @Override
+ protected List setChildrenOrder(List children)
+ throws QueryNodeException {
+
+ return children;
+
+ }
+
+}