/**
* 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.PrefixWildcardQueryNodeBuilder;
import org.apache.lucene.queryparser.flexible.standard.nodes.PrefixWildcardQueryNode;
import org.sindice.siren.qparser.keyword.processors.MultiNodeTermRewriteMethodProcessor;
import org.sindice.siren.search.node.MultiNodeTermQuery;
import org.sindice.siren.search.node.NodePrefixQuery;
/**
* Builds a {@link NodePrefixQuery} object from a {@link PrefixWildcardQueryNode}
* object.
*
* <p>
*
* Code taken from {@link PrefixWildcardQueryNodeBuilder} and adapted to SIREn
*/
public class NodePrefixWildcardQueryNodeBuilder implements KeywordQueryBuilder {
public NodePrefixWildcardQueryNodeBuilder() {
// empty constructor
}
public NodePrefixQuery build(final QueryNode queryNode) throws QueryNodeException {
final PrefixWildcardQueryNode wildcardNode = (PrefixWildcardQueryNode) queryNode;
final String text = wildcardNode.getText().subSequence(0, wildcardNode.getText().length() - 1).toString();
final NodePrefixQuery q = new NodePrefixQuery(new Term(wildcardNode.getFieldAsString(), text));
final MultiNodeTermQuery.RewriteMethod method = (MultiNodeTermQuery.RewriteMethod)queryNode.getTag(MultiNodeTermRewriteMethodProcessor.TAG_ID);
if (method != null) {
q.setRewriteMethod(method);
}
return q;
}
}