/**
* Stores uploaded file in database. If there are several files, they are compressed into zip
* archive (with filename = user_login.zip).
*
* @param user Owner of the attachment
* @param files List of uploaded files to be saved into database
* @return ID of attachment in the database or null if operation failed.
*/
@Override
public Attachment uploadFiles(User user, List<ReshakaUploadedFile> files, String tags) {
if (log.isTraceEnabled()) {
log.trace(">> uploadFiles(): " + files);
}
if (!checkUploadRights(user)) {
return null;
}
if (files.isEmpty()) {
if (log.isDebugEnabled()) {
log.debug("List of files is empty! Nothing to compress.");
}
return null;
}
try {
Attachment att = prepareAttachment(user, files, tags);
if (att.getSize() > MAX_ZIP_SIZE) {
if (log.isTraceEnabled()) {
log.trace("File too large!");
}
throw new IOException("File too large.");
}
em.persist(att);
Set<User> uset = new HashSet();
uset.add(user);
att.setUser(uset);
em.merge(att);
if (log.isTraceEnabled()) {
log.trace("<< uploadFiles(): " + att);
}
return att;
} catch (Exception ex) {
log.error("uploadFiles(): Failed to upload files. ", ex);
return null;
}
}
