/**
* Get an {@link OriginalFile} object based on its id. Returns null if the file does not exist or
* does not belong to this repo.
*
* @param id long, db id of original file.
* @return OriginalFile object.
*/
private CheckedPath checkId(final long id, final Ice.Current curr)
throws SecurityViolation, ValidationException {
// TODO: could getOriginalFile and getFile be reduced to a single call?
final FsFile file = this.repositoryDao.getFile(id, curr, this.repoUuid);
if (file == null) {
throw new SecurityViolation(null, null, "FileNotFound: " + id);
}
final OriginalFile originalFile = this.repositoryDao.getOriginalFile(id, curr);
if (originalFile == null) {
/* reachable even if file != null because getFile uses SQL,
* evading the filter on the HQL used here by getOriginalFile */
throw new SecurityViolation(null, null, "FileNotAccessible: " + id);
}
final CheckedPath checked =
new CheckedPath(
this.serverPaths, file.toString(), checksumProviderFactory, originalFile.getHasher());
checked.setId(id);
return checked;
}
protected OriginalFile findOrCreateInDb(
CheckedPath checked, String mode, String mimetype, Ice.Current curr) throws ServerError {
OriginalFile ofile = findInDb(checked, mode, curr);
if (ofile != null) {
return ofile;
}
if (checked.exists()) {
omero.grid.UnregisteredFileException ufe = new omero.grid.UnregisteredFileException();
ofile = (OriginalFile) new IceMapper().map(checked.asOriginalFile(mimetype));
ufe.file = ofile;
throw ufe;
}
ofile = repositoryDao.register(repoUuid, checked, null, curr);
final long originalFileId = ofile.getId().getValue();
setOriginalFileHasherToSHA1(originalFileId, curr);
checked.setId(originalFileId);
return ofile;
}
/**
* Find the given path in the DB or create.
*
* <p>"requiresWrite" is set to true unless the mode is "r". If requiresWrite is true, then the
* caller needs the file to be modifiable (both on disk and the DB). If this doesn't hold, then a
* SecurityViolation will be thrown.
*/
protected OriginalFile findInDb(CheckedPath checked, String mode, Ice.Current current)
throws ServerError {
final OriginalFile ofile = repositoryDao.findRepoFile(repoUuid, checked, null, current);
if (ofile == null) {
return null; // EARLY EXIT!
}
boolean requiresWrite = true;
if ("r".equals(mode)) {
requiresWrite = false;
}
checked.setId(ofile.getId().getValue());
boolean canUpdate = repositoryDao.canUpdate(ofile, current);
if (requiresWrite && !canUpdate) {
throw new omero.SecurityViolation(null, null, "requiresWrite is true but cannot modify");
}
return ofile;
}