cdmlib-services/src/main/java/eu/etaxonomy/cdm/api/service/MediaServiceImpl.java

   1 // $Id$
   2 /**
   3  * Copyright (C) 2007 EDIT
   4  * European Distributed Institute of Taxonomy
   5  * http://www.e-taxonomy.eu
   6  *
   7  * The contents of this file are subject to the Mozilla Public License Version 1.1
   8  * See LICENSE.TXT at the top of this package for the full license terms.
   9  */
  10
  11 package eu.etaxonomy.cdm.api.service;
  12
  13 import java.io.IOException;
  14 import java.net.HttpURLConnection;
  15 import java.net.MalformedURLException;
  16 import java.net.URI;
  17 import java.net.URL;
  18 import java.util.ArrayList;
  19 import java.util.List;
  20 import java.util.Map;
  21 import java.util.Set;
  22
  23 import org.apache.http.HttpException;
  24 import org.springframework.beans.factory.annotation.Autowired;
  25 import org.springframework.stereotype.Service;
  26 import org.springframework.transaction.annotation.Propagation;
  27 import org.springframework.transaction.annotation.Transactional;
  28
  29 import eu.etaxonomy.cdm.api.service.pager.Pager;
  30 import eu.etaxonomy.cdm.api.service.pager.impl.DefaultPagerImpl;
  31 import eu.etaxonomy.cdm.common.IProgressMonitor;
  32 import eu.etaxonomy.cdm.common.mediaMetaData.ImageMetaData;
  33 import eu.etaxonomy.cdm.model.description.MediaKey;
  34 import eu.etaxonomy.cdm.model.location.NamedArea;
  35 import eu.etaxonomy.cdm.model.media.Media;
  36 import eu.etaxonomy.cdm.model.media.Rights;
  37 import eu.etaxonomy.cdm.model.name.TaxonNameBase;
  38 import eu.etaxonomy.cdm.model.taxon.Classification;
  39 import eu.etaxonomy.cdm.model.taxon.Taxon;
  40 import eu.etaxonomy.cdm.persistence.dao.media.IMediaDao;
  41 import eu.etaxonomy.cdm.strategy.cache.common.IIdentifiableEntityCacheStrategy;
  42 import eu.etaxonomy.cdm.strategy.cache.media.MediaDefaultCacheStrategy;
  43
  44 @Service
  45 @Transactional(readOnly=true, propagation = Propagation.SUPPORTS)
  46 public class MediaServiceImpl extends IdentifiableServiceBase<Media,IMediaDao> implements IMediaService {
  47
  48         @Autowired
  49         protected void setDao(IMediaDao dao) {
  50                 this.dao = dao;
  51         }
  52
  53         public Pager<MediaKey> getMediaKeys(Set<Taxon> taxonomicScope, Set<NamedArea> geoScopes, Integer pageSize, Integer pageNumber, List<String> propertyPaths) {
  54         Integer numberOfResults = dao.countMediaKeys(taxonomicScope, geoScopes);
  55
  56                 List<MediaKey> results = new ArrayList<MediaKey>();
  57                 if(numberOfResults > 0) { // no point checking again  //TODO use AbstractPagerImpl.hasResultsInRange(numberOfResults, pageNumber, pageSize)
  58                         results = dao.getMediaKeys(taxonomicScope, geoScopes, pageSize, pageNumber, propertyPaths);
  59                 }
  60
  61                 return new DefaultPagerImpl<MediaKey>(pageNumber, numberOfResults, pageSize, results);
  62         }
  63
  64         public Pager<Rights> getRights(Media t, Integer pageSize, Integer pageNumber, List<String> propertyPaths) {
  65         Integer numberOfResults = dao.countRights(t);
  66
  67                 List<Rights> results = new ArrayList<Rights>();
  68                 if(numberOfResults > 0) { // no point checking again  //TODO use AbstractPagerImpl.hasResultsInRange(numberOfResults, pageNumber, pageSize)
  69                         results = dao.getRights(t, pageSize, pageNumber,propertyPaths);
  70                 }
  71
  72                 return new DefaultPagerImpl<Rights>(pageNumber, numberOfResults, pageSize, results);
  73         }
  74
  75
  76         public ImageMetaData getImageInfo(URI imageUri, Integer timeOut) throws IOException, HttpException{
  77                 ImageMetaData imageMetaData = ImageMetaData.newInstance();
  78                 imageMetaData.readImageInfo(imageUri, timeOut);
  79                 imageMetaData.readMetaData(imageUri, timeOut);
  80
  81                 return imageMetaData;
  82         }
  83
  84         public Map<String,String> getImageMetaData(URI imageUri, Integer timeOut) throws IOException, HttpException{
  85
  86                 ImageMetaData imageMetaData = ImageMetaData.newInstance();
  87                 imageMetaData.readMetaData(imageUri, timeOut);
  88
  89
  90                 return imageMetaData.getMetaData();
  91         }
  92
  93         /*
  94          * (non-Javadoc)
  95          * @see eu.etaxonomy.cdm.api.service.IMediaService#getImageSize(java.net.URI, java.lang.Integer)
  96          */
  97         public Integer getImageSize(URI imageUri, Integer timeOut) {
  98                 try {
  99                         URL url = imageUri.toURL();
 100                         HttpURLConnection.setFollowRedirects(false);
 101
 102                         HttpURLConnection connection = (HttpURLConnection) url.openConnection();
 103
 104                         return connection.getContentLength();
 105
 106                 } catch (MalformedURLException e) {
 107                         logger.trace("MalformedURLException when trying to get filesize for: " +imageUri);
 108                 } catch (IOException e) {
 109                         logger.trace("IOException when trying to get filesize for: " +imageUri);
 110                 }
 111                 return null;
 112         }
 113
 114
 115         /* (non-Javadoc)
 116          * @see eu.etaxonomy.cdm.api.service.IIdentifiableEntityService#updateTitleCache(java.lang.Integer, eu.etaxonomy.cdm.strategy.cache.common.IIdentifiableEntityCacheStrategy)
 117          */
 118         @Override
 119         public void updateTitleCache(Class<? extends Media> clazz, Integer stepSize, IIdentifiableEntityCacheStrategy<Media> cacheStrategy, IProgressMonitor monitor) {
 120                 //IIdentifiableEntityCacheStrategy<Media> cacheStrategy = MediaDefaultCacheStrategy();
 121                 if (clazz == null){
 122                         clazz = Media.class;
 123                 }
 124                 super.updateTitleCacheImpl(clazz, stepSize, cacheStrategy, monitor);
 125         }
 126 }