private void populateTableRowFromItem(Item item, TableRow row) {
EPerson submitter = item.getSubmitter();
Collection owningCollection = item.getOwningCollection();
row.setColumn("item_id", item.getID());
row.setColumn("in_archive", item.isArchived());
row.setColumn("withdrawn", item.isWithdrawn());
row.setColumn("last_modified", item.getLastModified());
if (submitter != null) {
row.setColumn("submitter_id", submitter.getID());
}
if (owningCollection != null) {
row.setColumn("owning_collection", owningCollection.getID());
}
}
/**
* Show an item page
*
* @param context Context object
* @param request the HTTP request
* @param response the HTTP response
* @param item the item
* @param identifier a persistent identifier that belongs to the item
*/
private void displayItem(
Context context, HttpServletRequest request, HttpServletResponse response, Item item)
throws ServletException, IOException, SQLException, AuthorizeException {
// Tombstone?
if (item.isWithdrawn()) {
JSPManager.showJSP(request, response, "/tombstone.jsp");
return;
}
// Ensure the user has authorisation
AuthorizeManager.authorizeAction(context, item, Constants.READ);
log.info(
LogManager.getHeader(
context, "view_item", "uri=" + item.getIdentifier().getCanonicalForm()));
// show edit link
if (item.canEdit()) {
// set a variable to create an edit button
request.setAttribute("admin_button", new Boolean(true));
}
// Get the collections
Collection[] collections = (Collection[]) item.getCollections().toArray();
// For the breadcrumbs, get the first collection and the first community
// that is in. FIXME: Not multiple-inclusion friendly--should be
// smarter, context-sensitive
request.setAttribute("dspace.collection", item.getOwningCollection());
Collection collection = item.getOwningCollection();
if (collection != null) {
Community[] comms = (Community[]) collection.getCommunities().toArray();
if (comms.length > 0) {
request.setAttribute("dspace.community", comms[0]);
/*
* Find all the "parent" communities for the collection
*/
request.setAttribute("dspace.communities", getParents(comms[0], true));
}
}
// Full or simple display?
boolean displayAll = false;
String modeParam = request.getParameter("mode");
if ((modeParam != null) && modeParam.equalsIgnoreCase("full")) {
displayAll = true;
}
// Enable suggest link or not
boolean suggestEnable = false;
if (!ConfigurationManager.getBooleanProperty("webui.suggest.enable")) {
// do nothing, the suggestLink is allready set to false
} else {
// it is in general enabled
suggestEnable = true;
// check for the enable only for logged in users option
if (!ConfigurationManager.getBooleanProperty("webui.suggest.loggedinusers.only")) {
// do nothing, the suggestLink stays as it is
} else {
// check whether there is a logged in user
suggestEnable = (context.getCurrentUser() == null ? false : true);
}
}
// Set attributes and display
request.setAttribute("suggest.enable", new Boolean(suggestEnable));
request.setAttribute("display.all", new Boolean(displayAll));
request.setAttribute("item", item);
request.setAttribute("collections", collections);
JSPManager.showJSP(request, response, "/display-item.jsp");
}
@Override
protected void doDSGet(Context context, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, SQLException, AuthorizeException {
Item item = null;
Bitstream bitstream = null;
// Get the ID from the URL
String idString = request.getPathInfo();
String handle = "";
String sequenceText = "";
String filename = null;
int sequenceID;
// Parse 'handle' and 'sequence' (bitstream seq. number) out
// of remaining URL path, which is typically of the format:
// {handle}/{sequence}/{bitstream-name}
// But since the bitstream name MAY have any number of "/"s in
// it, and the handle is guaranteed to have one slash, we
// scan from the start to pick out handle and sequence:
// Remove leading slash if any:
if (idString.startsWith("/")) {
idString = idString.substring(1);
}
// skip first slash within handle
int slashIndex = idString.indexOf('/');
if (slashIndex != -1) {
slashIndex = idString.indexOf('/', slashIndex + 1);
if (slashIndex != -1) {
handle = idString.substring(0, slashIndex);
int slash2 = idString.indexOf('/', slashIndex + 1);
if (slash2 != -1) {
sequenceText = idString.substring(slashIndex + 1, slash2);
filename = idString.substring(slash2 + 1);
}
}
}
try {
sequenceID = Integer.parseInt(sequenceText);
} catch (NumberFormatException nfe) {
sequenceID = -1;
}
// Now try and retrieve the item
DSpaceObject dso = HandleManager.resolveToObject(context, handle);
// Make sure we have valid item and sequence number
if (dso != null && dso.getType() == Constants.ITEM && sequenceID >= 0) {
item = (Item) dso;
if (item.isWithdrawn()) {
log.info(
LogManager.getHeader(
context, "view_bitstream", "handle=" + handle + ",withdrawn=true"));
JSPManager.showJSP(request, response, "/tombstone.jsp");
return;
}
boolean found = false;
Bundle[] bundles = item.getBundles();
for (int i = 0; (i < bundles.length) && !found; i++) {
Bitstream[] bitstreams = bundles[i].getBitstreams();
for (int k = 0; (k < bitstreams.length) && !found; k++) {
if (sequenceID == bitstreams[k].getSequenceID()) {
bitstream = bitstreams[k];
found = true;
}
}
}
}
if (bitstream == null || filename == null || !filename.equals(bitstream.getName())) {
// No bitstream found or filename was wrong -- ID invalid
log.info(LogManager.getHeader(context, "invalid_id", "path=" + idString));
JSPManager.showInvalidIDError(request, response, idString, Constants.BITSTREAM);
return;
}
log.info(LogManager.getHeader(context, "view_bitstream", "bitstream_id=" + bitstream.getID()));
// Modification date
// Only use last-modified if this is an anonymous access
// - caching content that may be generated under authorisation
// is a security problem
if (context.getCurrentUser() == null) {
// TODO: Currently the date of the item, since we don't have dates
// for files
response.setDateHeader("Last-Modified", item.getLastModified().getTime());
// Check for if-modified-since header
long modSince = request.getDateHeader("If-Modified-Since");
if (modSince != -1 && item.getLastModified().getTime() < modSince) {
// Item has not been modified since requested date,
// hence bitstream has not; return 304
response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
return;
}
}
// Pipe the bits
InputStream is = bitstream.retrieve();
// Set the response MIME type
response.setContentType(bitstream.getFormat().getMIMEType());
// Response length
response.setHeader("Content-Length", String.valueOf(bitstream.getSize()));
if (threshold != -1 && bitstream.getSize() >= threshold) {
setBitstreamDisposition(bitstream.getName(), request, response);
}
Utils.bufferedCopy(is, response.getOutputStream());
is.close();
response.getOutputStream().flush();
}