cdmlib-ext/src/main/java/eu/etaxonomy/cdm/ext/openurl/OpenUrlReference.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2009 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 package eu.etaxonomy.cdm.ext.openurl;
  11
  12 import java.net.URI;
  13 import java.net.URISyntaxException;
  14
  15 import org.apache.log4j.Logger;
  16
  17 import eu.etaxonomy.cdm.ext.openurl.MobotOpenUrlServiceWrapper.ReferenceType;
  18 import eu.etaxonomy.cdm.model.reference.Reference;
  19 import eu.etaxonomy.cdm.strategy.cache.reference.IReferenceBaseCacheStrategy;
  20
  21 /**
  22  * @author a.kohlbecker
  23  * @date 16.12.2010
  24  *
  25  */
  26 public class OpenUrlReference<S extends IReferenceBaseCacheStrategy> extends Reference<S> {
  27
  28
  29         private static final String PAGETHUMB_BASE_URI = "http://www.biodiversitylibrary.org/pagethumb/";
  30
  31         public static final Logger logger = Logger.getLogger(OpenUrlReference.class);
  32
  33         private static final long serialVersionUID = 1L;
  34
  35         private URI itemUri;
  36
  37         private URI titleUri;
  38
  39         private ReferenceType referenceType = null;
  40
  41         /**
  42          * Links to the specific book or journal, that is to the front page
  43          *
  44          * @param itemUri the itemUri to set
  45          */
  46         public void setItemUri(URI itemUri) {
  47                 this.itemUri = itemUri;
  48         }
  49
  50         /**
  51          * Links to the according entry in the bibliography.
  52          *
  53          * @return the itemUri
  54          */
  55         public URI getItemUri() {
  56                 return itemUri;
  57         }
  58
  59         /**
  60          * @param titleUri the titleUri to set
  61          */
  62         public void setTitleUri(URI titleUri) {
  63                 this.titleUri = titleUri;
  64         }
  65
  66
  67         /**
  68          * @return the titleUri
  69          */
  70         public URI getTitleUri() {
  71                 return titleUri;
  72         }
  73
  74
  75         /**
  76          * Splits the id from the base ulr of the id urls used in bhl. For example the url string http://www.biodiversitylibrary.org/item/16772 will be split into
  77          * <ol>
  78          * <li>http://www.biodiversitylibrary.org/item</li>
  79          * <li>16772</li>
  80          * </ol>
  81          * @param uri
  82          * @return
  83          */
  84         private String[] splitPathAndId(URI uri) {
  85                 String[] tokens = new String[2];
  86                 if(uri != null){
  87                         String titleUriString = uri.toString();
  88                         tokens[1]  = titleUriString.substring(titleUriString.lastIndexOf('/') + 1);
  89                         tokens[0]  = titleUriString.substring(0, titleUriString.lastIndexOf('/'));
  90                         return tokens;
  91                 } else  {
  92                         return null;
  93                 }
  94         }
  95
  96         /**
  97          * @param referenceType the referenceType to set
  98          */
  99         public void setReferenceType(ReferenceType referenceType) {
 100                 this.referenceType = referenceType;
 101         }
 102
 103         /**
 104          * @return the referenceType
 105          */
 106         public ReferenceType getReferenceType() {
 107                 return referenceType;
 108         }
 109
 110         /**
 111          * This method will construct an URI pointing to a service which creates an
 112          * jpeg image. This may take a while. For more information please refer to
 113          * http://biodivlib.wikispaces.com/Developer+Tools+and+API. If the width or
 114          * height of the of the image given as parameter are null or 0 the BHL
 115          * service will respond with the default thumbnail which seems to be cached.
 116          * This is usually much faster than requesting for a custom imge
 117          * size.
 118          * <p>
 119          *
 120          * @param width
 121          *            width of the image, may be null or 0
 122          * @param height
 123          *            height of the image, may be null or 0
 124          * @return
 125          */
 126         public URI getJpegImage(Integer width, Integer height){
 127
 128                 URI imageURI = null;
 129                 try {
 130                         String sizeStr = "";
 131                         if(width != null && height != null && width > 0 && height > 0){
 132                                 sizeStr = "," + width + "," + height;
 133                         }
 134                         String[] tokens = splitPathAndId(getUri());
 135                         if(tokens.length == 2){
 136                                 imageURI = new URI(PAGETHUMB_BASE_URI + tokens[1] + sizeStr);
 137                         }
 138                 } catch (URISyntaxException e) {
 139                         // should never happen, but let's report it anyway
 140                         logger.error(e);
 141                 }
 142                 return imageURI;
 143         }
 144 }