+++ /dev/null
-package org.apache.lucene.queryParser.spans;
-
-/**
- * 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.QueryConfigHandler;
-import org.apache.lucene.queryParser.core.nodes.FieldableNode;
-import org.apache.lucene.queryParser.core.nodes.QueryNode;
-import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl;
-
-/**
- * This processor changes every field name of each {@link FieldableNode} query
- * node contained in the query tree to the field name defined in the
- * {@link UniqueFieldAttribute}. So, the {@link UniqueFieldAttribute} must be
- * defined in the {@link QueryConfigHandler} object set in this processor,
- * otherwise it throws an exception.<br/>
- * <br/>
- *
- * @see UniqueFieldAttribute
- */
-public class UniqueFieldQueryNodeProcessor extends QueryNodeProcessorImpl {
-
- @Override
- protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
-
- return node;
-
- }
-
- @Override
- protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
-
- if (node instanceof FieldableNode) {
- FieldableNode fieldNode = (FieldableNode) node;
-
- QueryConfigHandler queryConfig = getQueryConfigHandler();
-
- if (queryConfig == null) {
- throw new IllegalArgumentException(
- "A config handler is expected by the processor UniqueFieldQueryNodeProcessor!");
- }
-
- if (!queryConfig.has(SpansQueryConfigHandler.UNIQUE_FIELD)) {
- throw new IllegalArgumentException(
- "UniqueFieldAttribute should be defined in the config handler!");
- }
-
- String uniqueField = queryConfig.get(SpansQueryConfigHandler.UNIQUE_FIELD);
- fieldNode.setField(uniqueField);
-
- }
-
- return node;
-
- }
-
- @Override
- protected List<QueryNode> setChildrenOrder(List<QueryNode> children)
- throws QueryNodeException {
-
- return children;
-
- }
-
-}