/**
* Copyright 2014 National University of Ireland, Galway.
*
* This file is part of the SIREn project. Project and contact information:
*
* https://github.com/rdelbru/SIREn
*
* Licensed 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.
*/
package org.sindice.siren.qparser.keyword.builders;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryparser.flexible.core.QueryNodeException;
import org.apache.lucene.queryparser.flexible.core.nodes.QueryNode;
import org.apache.lucene.queryparser.flexible.standard.builders.RegexpQueryNodeBuilder;
import org.apache.lucene.queryparser.flexible.standard.builders.StandardQueryBuilder;
import org.apache.lucene.queryparser.flexible.standard.nodes.RegexpQueryNode;
import org.sindice.siren.qparser.keyword.processors.MultiNodeTermRewriteMethodProcessor;
import org.sindice.siren.search.node.MultiNodeTermQuery;
import org.sindice.siren.search.node.NodeQuery;
import org.sindice.siren.search.node.NodeRegexpQuery;
/**
* Builds a {@link NodeRegexpQuery} object from a {@link RegexpQueryNode} object.
*
* <p>
*
* Code taken from {@link RegexpQueryNodeBuilder} and adapted for SIREn.
*/
public class NodeRegexpQueryNodeBuilder implements StandardQueryBuilder {
public NodeRegexpQueryNodeBuilder() {
// empty constructor
}
public NodeQuery build(final QueryNode queryNode) throws QueryNodeException {
final RegexpQueryNode regexpNode = (RegexpQueryNode) queryNode;
final NodeRegexpQuery q = new NodeRegexpQuery(new Term(regexpNode.getFieldAsString(),
regexpNode.textToBytesRef()));
final MultiNodeTermQuery.RewriteMethod method = (MultiNodeTermQuery.RewriteMethod) queryNode
.getTag(MultiNodeTermRewriteMethodProcessor.TAG_ID);
if (method != null) {
q.setRewriteMethod(method);
}
return q;
}
}