/**
* Match the URIs this subclass understands and return the corresponding resource. Since the
* "dso_" format can lead to several different resource types, handle it here.
*
* @param context the context
* @param request the request
* @param response the response
* @param pathElt the path elt
* @return the DAV resource
* @throws DAVStatusException the DAV status exception
* @throws SQLException the SQL exception
* @throws AuthorizeException the authorize exception
*/
protected static DAVResource matchResourceURI(
Context context, HttpServletRequest request, HttpServletResponse response, String pathElt[])
throws DAVStatusException, SQLException, AuthorizeException {
// Match /dso_<handle>{...} .. look for last "dso_" element
if (pathElt[0].startsWith("dso_")) {
int i = 1;
for (; i < pathElt.length && pathElt[i].startsWith("dso_"); ++i) {
// empty
}
--i;
String handle = decodeHandle(pathElt[i].substring(4));
// Replace substituted handle separator char with '/' to
// get back a normal handle: (inverse of getPathElt() above)
int sepIndex = handle.indexOf(handleSeparator);
if (sepIndex >= 0) {
char hc[] = handle.toCharArray();
hc[sepIndex] = '/';
handle = String.copyValueOf(hc);
}
DSpaceObject dso = HandleManager.resolveToObject(context, handle);
if (dso == null) {
throw new DAVStatusException(
HttpServletResponse.SC_NOT_FOUND, "Cannot resolve handle \"" + handle + "\"");
} else if (dso.getType() == Constants.ITEM) {
if (i + 1 < pathElt.length) {
if (pathElt[i + 1].startsWith("bitstream_")) {
Bitstream bs = DAVBitstream.findBitstream(context, (Item) dso, pathElt[i + 1]);
if (bs == null) {
throw new DAVStatusException(
HttpServletResponse.SC_NOT_FOUND,
"Bitstream \"" + pathElt[i + 1] + "\" not found in item: " + pathElt[i]);
}
return new DAVBitstream(context, request, response, pathElt, (Item) dso, bs);
} else {
throw new DAVStatusException(
HttpServletResponse.SC_NOT_FOUND,
"Illegal resource path, \""
+ pathElt[i + 1]
+ "\" is not a Bitstream identifier for item: "
+ pathElt[i]);
}
} else {
return new DAVItem(context, request, response, pathElt, (Item) dso);
}
} else if (dso.getType() == Constants.COLLECTION) {
return new DAVCollection(context, request, response, pathElt, (Collection) dso);
} else if (dso.getType() == Constants.COMMUNITY) {
return new DAVCommunity(context, request, response, pathElt, (Community) dso);
} else {
throw new DAVStatusException(
HttpServletResponse.SC_BAD_REQUEST,
"Unrecognized DSpace object type for handle=" + handle);
}
}
return null;
}
/**
* Match Item URIs that identify the item by a database ID. Handle URIs are matched by
* DAVDSpaceObject.
*
* @param context the context
* @param request the request
* @param response the response
* @param pathElt the path elt
* @return the DAV resource
* @throws DAVStatusException the DAV status exception
* @throws SQLException the SQL exception
*/
protected static DAVResource matchResourceURI(
Context context, HttpServletRequest request, HttpServletResponse response, String pathElt[])
throws DAVStatusException, SQLException {
int id = -1;
String bsElt = null;
try {
// The "/item_db_" element in last or next-to-last element
if (pathElt[pathElt.length - 1].startsWith("item_db_")) {
id = Integer.parseInt(pathElt[pathElt.length - 1].substring(8));
} else if (pathElt[pathElt.length - 1].startsWith("bitstream_")
&& pathElt.length > 1
&& pathElt[pathElt.length - 2].startsWith("item_db_")) {
id = Integer.parseInt(pathElt[pathElt.length - 2].substring(8));
bsElt = pathElt[pathElt.length - 1];
}
if (id >= 0) {
Item item = Item.find(context, id);
if (item == null) {
throw new DAVStatusException(
HttpServletResponse.SC_NOT_FOUND,
"Item with ID=" + String.valueOf(id) + " not found.");
}
if (bsElt != null) {
Bitstream bs = DAVBitstream.findBitstream(context, item, bsElt);
if (bs == null) {
throw new DAVStatusException(HttpServletResponse.SC_NOT_FOUND, "Bitstream not found.");
}
return new DAVBitstream(context, request, response, pathElt, item, bs);
} else {
return new DAVItem(context, request, response, pathElt, item);
}
}
return null;
} catch (NumberFormatException ne) {
throw new DAVStatusException(
HttpServletResponse.SC_BAD_REQUEST, "Error parsing number in request URI.");
}
}
