private void purge(final Folder folder, final SearchFilter filter) throws Exception {
final int num = folder.getChildFolderCount();
if (includeSubfolders && num > 0) {
final FolderView folderView = new FolderView(num);
final FindFoldersResults children = folder.findFolders(folderView);
for (final Folder child : children) {
purge(child, filter);
final ItemView view = new ItemView(1);
if (child.findItems(view).getTotalCount() == 0) {
child.delete(DeleteMode.HardDelete);
}
}
}
while (deleteItems(folder, filter)) {}
}
private boolean deleteItems(final Folder folder, final SearchFilter filter) throws Exception {
final ItemView view = new ItemView(500);
view.setPropertySet(PropertySet.IdOnly);
final FindItemsResults<Item> items = folder.findItems(filter, view);
if (items.getTotalCount() > 0) {
final Iterable<ItemId> itemIds = Iterables.transform(items, ItemToItemId.INSTANCE);
folder
.getService()
.deleteItems(
itemIds,
deleteMode,
SendCancellationsMode.SendToNone,
AffectedTaskOccurrence.SpecifiedOccurrenceOnly);
}
return items.isMoreAvailable();
}