package org.apache.lucene.queryParser.standard.builders;
/**
* 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 org.apache.lucene.queryParser.core.QueryNodeException;
import org.apache.lucene.queryParser.core.builders.QueryTreeBuilder;
import org.apache.lucene.queryParser.core.nodes.QueryNode;
import org.apache.lucene.queryParser.core.nodes.SlopQueryNode;
import org.apache.lucene.search.MultiPhraseQuery;
import org.apache.lucene.search.PhraseQuery;
import org.apache.lucene.search.Query;
/**
* This builder basically reads the {@link Query} object set on the
* {@link SlopQueryNode} child using
* {@link QueryTreeBuilder#QUERY_TREE_BUILDER_TAGID} and applies the slop value
* defined in the {@link SlopQueryNode}.
*/
public class SlopQueryNodeBuilder implements StandardQueryBuilder {
public SlopQueryNodeBuilder() {
// empty constructor
}
public Query build(QueryNode queryNode) throws QueryNodeException {
SlopQueryNode phraseSlopNode = (SlopQueryNode) queryNode;
Query query = (Query) phraseSlopNode.getChild().getTag(
QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);
if (query instanceof PhraseQuery) {
((PhraseQuery) query).setSlop(phraseSlopNode.getValue());
} else {
((MultiPhraseQuery) query).setSlop(phraseSlopNode.getValue());
}
return query;
}
}