TupleFilter.java

package com.yahoo.glimmer.indexing.preprocessor;

/*
 * Copyright (c) 2012 Yahoo! Inc. All rights reserved.
 * 
 *  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.
 *  See accompanying LICENSE file.
 */

/** TupleRewriter filter out/rewrite tuples during preprocessing of RDF
 * 
 * @author tep
 */
public interface TupleFilter {
    /**
     * @param tuple Mutable Tuple as read from input. Note that the passed in tuple and it's elements are 're-used'.
     * @return true to keep the tuple or false to skip it.
     */
    public boolean filter(Tuple tuple);
}