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.index.Term;
import org.apache.lucene.queryParser.core.QueryNodeException;
import org.apache.lucene.queryParser.core.nodes.QueryNode;
import org.apache.lucene.queryParser.standard.config.MultiTermRewriteMethodAttribute;
import org.apache.lucene.queryParser.standard.nodes.PrefixWildcardQueryNode;
import org.apache.lucene.search.MultiTermQuery;
import org.apache.lucene.search.PrefixQuery;
/**
* Builds a {@link PrefixQuery} object from a {@link PrefixWildcardQueryNode}
* object.
*/
public class PrefixWildcardQueryNodeBuilder implements StandardQueryBuilder {
public PrefixWildcardQueryNodeBuilder() {
// empty constructor
}
public PrefixQuery build(QueryNode queryNode) throws QueryNodeException {
PrefixWildcardQueryNode wildcardNode = (PrefixWildcardQueryNode) queryNode;
String text = wildcardNode.getText().subSequence(0, wildcardNode.getText().length() - 1).toString();
PrefixQuery q = new PrefixQuery(new Term(wildcardNode.getFieldAsString(), text));
MultiTermQuery.RewriteMethod method = (MultiTermQuery.RewriteMethod)queryNode.getTag(MultiTermRewriteMethodAttribute.TAG_ID);
if (method != null) {
q.setRewriteMethod(method);
}
return q;
}
}