/**
* Remove a file from an item
*
* @param context current DSpace context
* @param item Item where file should be removed from
* @param bitstreamID The id of bitstream representing the file to remove
* @return Status or error flag which will be processed by UI-related code! (if STATUS_COMPLETE or
* 0 is returned, no errors occurred!)
*/
protected int processRemoveFile(Context context, Item item, int bitstreamID)
throws IOException, SQLException, AuthorizeException {
Bitstream bitstream;
// Try to find bitstream
try {
bitstream = Bitstream.find(context, bitstreamID);
} catch (NumberFormatException nfe) {
bitstream = null;
}
if (bitstream == null) {
// Invalid or mangled bitstream ID
// throw an error and return immediately
return STATUS_INTEGRITY_ERROR;
}
// remove bitstream from bundle..
// delete bundle if it's now empty
Bundle[] bundles = bitstream.getBundles();
bundles[0].removeBitstream(bitstream);
Bitstream[] bitstreams = bundles[0].getBitstreams();
// remove bundle if it's now empty
if (bitstreams.length < 1) {
item.removeBundle(bundles[0]);
item.update();
}
// no errors occurred
return STATUS_COMPLETE;
}
/*
If we created a new Bitstream but now realised there is a problem then remove it.
*/
private void backoutBitstream(SubmissionInfo subInfo, Bitstream b, Item item)
throws SQLException, AuthorizeException, IOException {
// remove bitstream from bundle..
// delete bundle if it's now empty
Bundle[] bnd = b.getBundles();
bnd[0].removeBitstream(b);
Bitstream[] bitstreams = bnd[0].getBitstreams();
// remove bundle if it's now empty
if (bitstreams.length < 1) {
item.removeBundle(bnd[0]);
item.update();
}
subInfo.setBitstream(null);
}