/** * Returns canonical link to a bitstream in the item. * * @param item The DSpace Item that the bitstream is part of * @param bitstream The bitstream to link to * @returns a String link to the bitstream */ private String makeBitstreamLink(Item item, Bitstream bitstream) { String name = bitstream.getName(); StringBuilder result = new StringBuilder(contextPath); result.append("/bitstream/item/").append(String.valueOf(item.getID())); // append name although it isn't strictly necessary try { if (name != null) { result.append("/").append(Util.encodeBitstreamName(name, "UTF-8")); } } catch (UnsupportedEncodingException uee) { // just ignore it, we don't have to have a pretty // name on the end of the url because the sequence id will // locate it. However it means that links in this file might // not work.... } result.append("?sequence=").append(String.valueOf(bitstream.getSequenceID())); return result.toString(); }
/** * Generate a METS file element for a given bitstream. * * @param context * @param item If the bitstream is associated with an item, provide the item, otherwise leave * null. * @param bitstream The bitstream to build a file element for. * @param fileID The unique file id for this file. * @param groupID The group id for this file, if it is derived from another file then they should * share the same groupID. * @param admID The IDs of the administrative metadata sections which pertain to this file * @throws org.xml.sax.SAXException passed through. * @throws java.sql.SQLException passed through. */ protected final void renderFile( Context context, Item item, Bitstream bitstream, String fileID, String groupID, String admID) throws SAXException, SQLException { AttributeMap attributes; // ////////////////////////////// // Determine the file attributes BitstreamFormat format = bitstream.getFormat(context); String mimeType = null; if (format != null) { mimeType = format.getMIMEType(); } String checksumType = bitstream.getChecksumAlgorithm(); String checksum = bitstream.getChecksum(); long size = bitstream.getSize(); // //////////////////////////////// // Start the actual file attributes = new AttributeMap(); attributes.put("ID", fileID); attributes.put("GROUPID", groupID); if (admID != null && admID.length() > 0) { attributes.put("ADMID", admID); } if (mimeType != null && mimeType.length() > 0) { attributes.put("MIMETYPE", mimeType); } if (checksumType != null && checksum != null) { attributes.put("CHECKSUM", checksum); attributes.put("CHECKSUMTYPE", checksumType); } attributes.put("SIZE", String.valueOf(size)); startElement(METS, "file", attributes); // //////////////////////////////////// // Determine the file location attributes String name = bitstream.getName(); String description = bitstream.getDescription(); // If possible, reference this bitstream via a handle, however this may // be null if a handle has not yet been assigned. In this case reference the // item its internal id. In the last case where the bitstream is not associated // with an item (such as a community logo) then reference the bitstreamID directly. String identifier = null; if (item != null && item.getHandle() != null) { identifier = "handle/" + item.getHandle(); } else if (item != null) { identifier = "item/" + item.getID(); } else { identifier = "id/" + bitstream.getID(); } String url = contextPath + "/bitstream/" + identifier + "/"; // If we can, append the pretty name of the bitstream to the URL try { if (bitstream.getName() != null) { url += Util.encodeBitstreamName(bitstream.getName(), "UTF-8"); } } catch (UnsupportedEncodingException uee) { // just ignore it, we don't have to have a pretty // name at the end of the URL because the sequence id will // locate it. However it means that links in this file might // not work.... } url += "?sequence=" + bitstream.getSequenceID(); // ////////////////////// // Start the file location attributes = new AttributeMap(); AttributeMap attributesXLINK = new AttributeMap(); attributesXLINK.setNamespace(XLINK); attributes.put("LOCTYPE", "URL"); attributesXLINK.put("type", "locator"); attributesXLINK.put("title", name); if (description != null) { attributesXLINK.put("label", description); } attributesXLINK.put("href", url); startElement(METS, "FLocat", attributes, attributesXLINK); // /////////////////////// // End file location endElement(METS, "FLocate"); // //////////////////////////////// // End the file endElement(METS, "file"); }