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/**
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* Copyright (C) 2021 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.api.service.media;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.http.HttpException;
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import org.springframework.stereotype.Component;
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import eu.etaxonomy.cdm.common.URI;
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import eu.etaxonomy.cdm.common.media.CdmImageInfo;
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/**
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* @author a.kohlbecker
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* @since May 5, 2021
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*/
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@Component
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public class MediaInfoFactory implements IMediaInfoFactory {
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/**
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* TODO needs to be managed in CDM PREFERENCES per service and version.
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*
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* ./MediaInfoService/1.0/ --> MediaUriTransformation
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*/
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private List<MediaUriTransformation> mediaInfoService_1_0_Transformations = new ArrayList<>();
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public MediaInfoFactory() {
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mediaInfoService_1_0_Transformations.addAll(DefaultMediaTransformations.bgbmMediaMetadataService());
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}
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/**
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* This method only exists due to performance issues for cases when
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* the {@link MediaInfoFileReader} to reduce the overhead imposed by reading
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* the image metadata from the file itself.
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*/
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@Override
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public CdmImageInfo cdmImageInfo(URI imageUri, boolean forceMetaData) throws IOException, HttpException {
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List<URI> metadataServiceURIs = applyURITransformations(imageUri);
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if(!metadataServiceURIs.isEmpty()) {
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// :-) Hooray, we can get the metadata from the web service, this is going to be snappy
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return new MediaInfoServiceReader(imageUri, metadataServiceURIs.get(0))
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.read()
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.getCdmImageInfo();
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} else {
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// :-( need to use the files reader
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MediaInfoFileReader mediaReader = new MediaInfoFileReader(imageUri)
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.readBaseInfo();
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AbstactMediaMetadataReader reader = forceMetaData ? mediaReader.readMetaData() : mediaReader;
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return reader.getCdmImageInfo();
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}
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}
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protected List<URI> applyURITransformations(URI imageUri) {
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MediaUriTransformationProcessor processor = new MediaUriTransformationProcessor();
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processor.addAll(mediaInfoService_1_0_Transformations);
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List<URI> metadataServiceURIs = processor.applyTo(imageUri);
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return metadataServiceURIs;
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}
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}
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