001/**
002 * Copyright (c) 2011, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030package org.openimaj.tools.imagecollection.collection.webpage;
031
032import java.io.IOException;
033import java.net.URL;
034import java.util.Iterator;
035import java.util.Map;
036import java.util.Set;
037
038import org.openimaj.image.ImageUtilities;
039import org.openimaj.image.MBFImage;
040import org.openimaj.tools.imagecollection.collection.ImageCollectionEntry;
041import org.openimaj.tools.imagecollection.collection.ImageCollectionEntrySelection;
042import org.openimaj.util.pair.IndependentPair;
043
044public class URLImageIterator implements Iterator<ImageCollectionEntry<MBFImage>> {
045
046        private Iterator<IndependentPair<URL, Map<String, String>>> imageList;
047        private ImageCollectionEntrySelection<MBFImage> selection;
048
049        public URLImageIterator(Set<IndependentPair<URL, Map<String, String>>> imageList2, ImageCollectionEntrySelection<MBFImage> selection) {
050                this.imageList = imageList2.iterator();
051                this.selection = selection;
052        }
053
054        @Override
055        public boolean hasNext() {
056                return imageList.hasNext();
057        }
058
059        @Override
060        public ImageCollectionEntry<MBFImage> next() {
061                IndependentPair<URL, Map<String, String>> urlMeta = imageList.next();
062                URL u = urlMeta.firstObject();
063                try {
064                        MBFImage image = ImageUtilities.readMBF(u.openConnection().getInputStream());
065                        ImageCollectionEntry<MBFImage> entry = new ImageCollectionEntry<MBFImage>();
066                        entry.image = image;
067                        entry.meta = urlMeta.secondObject();
068                        entry.accepted = true;
069                        if(this.selection!=null) entry.accepted  = selection.acceptEntry(image);
070                        return entry;
071                } catch (IOException e) {
072                }
073                return null;
074        }
075
076        @Override
077        public void remove() {
078                this.imageList.remove();
079        }
080
081}