/**
* 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.FuzzyQueryNode;
import org.apache.lucene.queryparser.flexible.core.nodes.QueryNode;
import org.apache.lucene.search.FuzzyQuery;
import org.sindice.siren.search.node.NodeFuzzyQuery;
/**
* Builds a {@link NodeFuzzyQuery} object from a {@link FuzzyQueryNode} object.
*/
public class NodeFuzzyQueryNodeBuilder implements KeywordQueryBuilder {
public NodeFuzzyQueryNodeBuilder() {
// empty constructor
}
public NodeFuzzyQuery build(QueryNode queryNode) throws QueryNodeException {
FuzzyQueryNode fuzzyNode = (FuzzyQueryNode) queryNode;
String text = fuzzyNode.getTextAsString();
int numEdits = FuzzyQuery.floatToEdits(fuzzyNode.getSimilarity(),
text.codePointCount(0, text.length()));
return new NodeFuzzyQuery(new Term(fuzzyNode.getFieldAsString(), fuzzyNode
.getTextAsString()), numEdits, fuzzyNode
.getPrefixLength());
}
}