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.File;
019import java.io.FileFilter;
020import java.util.Iterator;
021import java.util.regex.Pattern;
022
023import org.apache.commons.io.filefilter.RegexFileFilter;
024import org.fcrepo.migration.FedoraObjectProcessor;
025import org.fcrepo.migration.ObjectSource;
026
027/**
028 * An ObjectSource implementation that exposes FOXML from a provided directory.
029 * @author mdurbin
030 */
031
032public class NativeFoxmlDirectoryObjectSource implements ObjectSource {
033
034    private InternalIDResolver resolver;
035
036    private URLFetcher fetcher;
037
038    private File root;
039
040    private String localFedoraServer;
041
042    /**
043     * Defaults to match any filename that doesn't begin with a "." character.
044     */
045    private FileFilter fileFilter = new RegexFileFilter(Pattern.compile("^[^\\.].*$"));
046
047    /**
048     * A constructor for use with the data storage directories that underly a
049     * fedora 3.x repository.  First, this constructor will build an index of
050     * all of the datastreams in the provided datastreamStore directory for use
051     * resolving internal id references within the foxml.
052     * @param objectStore a directory containing just directories and FOXML files
053     * @param resolver an InternalIDResolver implementation that can resolve
054     *                 references to internally managed datastreams.
055     * @param localFedoraServer the domain and port for the server that hosted the fedora objects in the format
056     *                          "localhost:8080".
057     */
058    public NativeFoxmlDirectoryObjectSource(final File objectStore,
059            final InternalIDResolver resolver, final String localFedoraServer) {
060        this.root = objectStore;
061        this.resolver = resolver;
062        this.fetcher = new HttpClientURLFetcher();
063        this.localFedoraServer = localFedoraServer;
064    }
065
066    /**
067     * set the fetcher.
068     * @param fetcher the fetcher
069     */
070    public void setFetcher(final URLFetcher fetcher) {
071        this.fetcher = fetcher;
072    }
073
074    /**
075     * Sets a FileFilter to determine which files will be considered as object
076     * files in the source directories.
077     * @param fileFilter a FileFilter implementation
078     */
079    public void setFileFilter(final FileFilter fileFilter) {
080        this.fileFilter = fileFilter;
081    }
082
083    @Override
084    public Iterator<FedoraObjectProcessor> iterator() {
085        return new FoxmlDirectoryDFSIterator(root, resolver, fetcher, localFedoraServer, fileFilter);
086    }
087
088}