protected long deleteMatchingFromQueue(final WorkQueueFrontier frontier, final String match)
throws IOException {
try {
final BdbMultipleWorkQueues queues = ((BdbFrontier) frontier).getWorkQueues();
return queues.deleteMatchingFromQueue(match, classKey, new DatabaseEntry(origin));
} catch (DatabaseException e) {
throw IoUtils.wrapAsIOException(e);
}
}