001/**
002 * Copyright 2015 DuraSpace, Inc.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.fcrepo.kernel.utils.iterators;
017
018import com.google.common.util.concurrent.ListenableFuture;
019import org.fcrepo.kernel.exception.MalformedRdfException;
020
021/**
022 * Implemented by something that can consume an {@link java.util.Iterator}. The
023 * assumption is that a reference to the appropriate iterator is managed as part
024 * of the state of any implementation.
025 * 
026 * @author ajs6f
027 * @since Oct 24, 2013
028 * @param <E> E
029 * @param <T> T
030 */
031public interface IteratorConsumer<E, T> {
032
033    /**
034     * Synchronous consumption.
035     * @throws MalformedRdfException if malformed rdf exception occurred
036     */
037    void consume() throws MalformedRdfException;
038
039    /**
040     * Asynchronous consumption.
041     *
042     * @return ListenableFuture
043     */
044    ListenableFuture<T> consumeAsync();
045
046}