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.migration.foxml;
017
018import java.io.IOException;
019
020/**
021 * An interface whose implementations serve as a mechanism to
022 * resolve internal (to fedora/FOXML) IDs.
023 * @author mdurdin
024 */
025public interface InternalIDResolver {
026
027    /**
028     * Gets the datastream for an internal ID.
029     * @param id the internal id referenced within a FOXML file.
030     * @return the binary content for the datastream referenced by the internal id
031     */
032    public CachedContent resolveInternalID(String id);
033
034    /**
035     * Closes any open resources.
036     * @throws IOException
037     */
038    public void close() throws IOException;
039}