@Override
public void updateGroup(PDPGroup group) throws PAPException {
if (group == null || group.getId() == null) {
throw new PAPException("Group or id is null");
}
if (group.getName() == null || group.getName().trim().length() == 0) {
throw new PAPException("New name for group cannot be null or blank");
}
StdPDPGroup existingGroup = (StdPDPGroup) getGroup(group.getId());
if (existingGroup == null) {
throw new PAPException("Update found no existing group with id '" + group.getId() + "'");
}
// We do dramatically different things when the Name changes
// because the Name is essentially the identity of the group (as the User knows it) so when the
// Identity changes we have to change the group ID.
if (group.getName().equals(existingGroup.getName())) {
// update the disk
try {
((StdPDPGroup) group).saveGroupConfiguration();
} catch (IOException e) {
throw new PAPException(
"Unable to save new configuration for '" + group.getName() + "': " + e.getMessage());
}
// update the group in the set by simply replacing the old instance with the new one
this.groups.remove(existingGroup);
this.groups.add((StdPDPGroup) group);
} else {
// the name/identity of the group has changed
// generate the new id
String newId = createNewPDPGroupId(group.getName());
// make sure no other group uses the new id
for (PDPGroup g : groups) {
if (g.getId().equals(newId)) {
throw new PAPException(
"Replacement name maps to ID '" + newId + "' which is already in use");
}
}
((StdPDPGroup) group).setId(newId);
// rename the existing directory to the new id
Path oldPath = existingGroup.getDirectory();
Path newPath = Paths.get(oldPath.getParent().toString(), newId);
((StdPDPGroup) group).setDirectory(newPath);
try {
boolean success = oldPath.toFile().renameTo(newPath.toFile());
if (!success) {
throw new PAPException("Unable to rename directory; reason unknown");
}
} catch (Exception e) {
logger.error("Move '" + oldPath + "' to '" + newPath + "': " + e.getMessage(), e);
throw new PAPException(
"Unable to move directory from '"
+ oldPath
+ "' to '"
+ newPath
+ "': "
+ e.getMessage());
}
// update the disk
try {
((StdPDPGroup) group).saveGroupConfiguration();
} catch (IOException e) {
throw new PAPException(
"Unable to save new configuration for '" + group.getName() + "': " + e.getMessage());
}
// save the new group into the Set
groups.remove(existingGroup);
groups.add((StdPDPGroup) group);
}
// perhaps only the group changed, but if the name/id changed it may look to a listener like
// more than
// one group
changed();
}
