/*
* Copyright 2012 SFB 632.
*
* 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 annis.ql.parser;
/**
* Transformer or optimizer for {@link QueryData}.
* @author Thomas Krause <krauseto@hu-berlin.de>
*/
public interface QueryDataTransformer
{
/**
* Transforms or optimizes a specific {@link QueryData}.
* The resulting opject might be a clone of the original one.
* @param data The data to transform.
* @return The (possably new object) with the transformation applied.
*/
public QueryData transform(QueryData data);
}