public static URL getLocalURL(DSpaceObject dso) {
URL url = null;
ObjectIdentifier oid = dso.getIdentifier();
if (oid == null) {
return null;
}
url = IdentifierFactory.getURL(oid);
return url;
}
public static String getCanonicalForm(DSpaceObject dso) {
String cf = "";
String ns = ConfigurationManager.getProperty("identifier.url-scheme");
if (!"".equals(ns) && ns != null) {
ExternalIdentifierType type = ExternalIdentifierMint.getType(ns);
List<ExternalIdentifier> eids = dso.getExternalIdentifiers();
for (ExternalIdentifier eid : eids) {
if (eid.getType().equals(type)) {
cf = eid.getCanonicalForm();
}
}
}
if ("".equals(cf)) {
ObjectIdentifier oid = dso.getIdentifier();
if (oid == null) {
return cf;
}
cf = oid.getCanonicalForm();
}
return cf;
}
public static URL getURL(DSpaceObject dso) {
URL url = null;
String ns = ConfigurationManager.getProperty("identifier.url-scheme");
if (!"".equals(ns) && ns != null) {
ExternalIdentifierType type = ExternalIdentifierMint.getType(ns);
List<ExternalIdentifier> eids = dso.getExternalIdentifiers();
for (ExternalIdentifier eid : eids) {
if (eid.getType().equals(type)) {
url = IdentifierFactory.getURL(eid);
}
}
}
if (url == null) {
ObjectIdentifier oid = dso.getIdentifier();
if (oid == null) {
return null;
}
url = IdentifierFactory.getURL(oid);
}
return url;
}
public void processDSpaceObject(
Context context,
HttpServletRequest request,
HttpServletResponse response,
DSpaceObject dso,
String extraPathInfo)
throws ServletException, IOException, SQLException, AuthorizeException {
// OK, we have a valid URI. What is it?
if (dso.getType() == Constants.BITSTREAM) {
// FIXME: Check for if-modified-since header
Bitstream bitstream = (Bitstream) dso;
log.info(
LogManager.getHeader(context, "view_bitstream", "bitstream_id=" + bitstream.getID()));
// Pipe the bits
// InputStream is = bitstream.retrieve();
InputStream is = BitstreamStorageManager.retrieve(context, bitstream);
// Set the response MIME type
response.setContentType(bitstream.getFormat().getMIMEType());
response.setHeader("Content-Length", String.valueOf(bitstream.getSize()));
response.setHeader("Content-disposition", "attachment; filename=" + bitstream.getName());
Utils.bufferedCopy(is, response.getOutputStream());
is.close();
response.getOutputStream().flush();
} else if (dso.getType() == Constants.ITEM) {
Item item = (Item) dso;
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);
} else {
// Display the item page
displayItem(context, request, response, item);
}
} else if (dso.getType() == Constants.COLLECTION) {
Collection c = (Collection) dso;
// Store collection location in request
request.setAttribute("dspace.collection", c);
/*
* Find the "parent" community the collection, mainly for
* "breadcrumbs" FIXME: At the moment, just grab the first community
* the collection is in. This should probably be more context
* sensitive when we have multiple inclusion.
*/
Community[] parents = (Community[]) c.getCommunities().toArray();
request.setAttribute("dspace.community", parents[0]);
/*
* Find all the "parent" communities for the collection for
* "breadcrumbs"
*/
request.setAttribute("dspace.communities", getParents(parents[0], true));
// home page, or forward to another page?
if ((extraPathInfo == null) || (extraPathInfo.equals("/"))) {
collectionHome(context, request, response, parents[0], c);
} else {
// Forward to another servlet
request.getRequestDispatcher(extraPathInfo).forward(request, response);
}
} else if (dso.getType() == Constants.COMMUNITY) {
Community c = (Community) dso;
// Store collection location in request
request.setAttribute("dspace.community", c);
/*
* Find all the "parent" communities for the community
*/
request.setAttribute("dspace.communities", getParents(c, false));
// home page, or forward to another page?
if ((extraPathInfo == null) || (extraPathInfo.equals("/"))) {
communityHome(context, request, response, c);
} else {
// Forward to another servlet
request.getRequestDispatcher(extraPathInfo).forward(request, response);
}
} else {
// Shouldn't happen. Log and treat as invalid ID
log.info(
LogManager.getHeader(
context,
"URI not an item, collection or community",
"identifier=" + dso.getIdentifier().toString()));
JSPManager.showInvalidIDError(request, response, request.getPathInfo(), -1);
return;
}
}
