001/*
002 * (C) Copyright 2016 Nuxeo SA (http://nuxeo.com/) and others.
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 *
016 * Contributors:
017 *     Miguel Nixo
018 */
019package org.nuxeo.ecm.platform.picture.convert;
020
021import java.io.Serializable;
022import java.util.ArrayList;
023import java.util.List;
024import java.util.Map;
025
026import org.apache.commons.logging.Log;
027import org.apache.commons.logging.LogFactory;
028import org.nuxeo.ecm.core.api.Blob;
029import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
030import org.nuxeo.ecm.core.convert.api.ConversionException;
031import org.nuxeo.ecm.core.convert.cache.SimpleCachableBlobHolder;
032import org.nuxeo.ecm.core.convert.extension.Converter;
033import org.nuxeo.ecm.core.convert.extension.ConverterDescriptor;
034import org.nuxeo.ecm.platform.picture.api.ImagingService;
035import org.nuxeo.runtime.api.Framework;
036
037/**
038 * @since 8.4
039 */
040public class ConvertToPDFPictureConverter implements Converter {
041
042    private static final Log log = LogFactory.getLog(ConvertToPDFPictureConverter.class);
043
044    @Override
045    public BlobHolder convert(BlobHolder blobHolder, Map<String, Serializable> parameters) throws ConversionException {
046        ImagingService service = Framework.getService(ImagingService.class);
047        List<Blob> sources = blobHolder.getBlobs();
048        List<Blob> results = new ArrayList<>(sources.size());
049        sources.stream().filter(source -> source != null).forEach(source -> {
050            Blob result = service.convertToPDF(source);
051            if (result != null) {
052                results.add(result);
053            }
054        });
055        return new SimpleCachableBlobHolder(results);
056    }
057
058    @Override
059    public void init(ConverterDescriptor descriptor) {
060    }
061
062}