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 java.util.List;
import org.apache.lucene.queryParser.core.QueryNodeException;
import org.apache.lucene.queryParser.core.builders.QueryTreeBuilder;
import org.apache.lucene.queryParser.core.nodes.FieldQueryNode;
import org.apache.lucene.queryParser.core.nodes.QueryNode;
import org.apache.lucene.queryParser.core.nodes.TokenizedPhraseQueryNode;
import org.apache.lucene.search.PhraseQuery;
import org.apache.lucene.search.TermQuery;
/**
* Builds a {@link PhraseQuery} object from a {@link TokenizedPhraseQueryNode}
* object.
*/
public class PhraseQueryNodeBuilder implements StandardQueryBuilder {
public PhraseQueryNodeBuilder() {
// empty constructor
}
public PhraseQuery build(QueryNode queryNode) throws QueryNodeException {
TokenizedPhraseQueryNode phraseNode = (TokenizedPhraseQueryNode) queryNode;
PhraseQuery phraseQuery = new PhraseQuery();
List<QueryNode> children = phraseNode.getChildren();
if (children != null) {
for (QueryNode child : children) {
TermQuery termQuery = (TermQuery) child
.getTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);
FieldQueryNode termNode = (FieldQueryNode) child;
phraseQuery.add(termQuery.getTerm(), termNode.getPositionIncrement());
}
}
return phraseQuery;
}
}