public TransactionCommand beginTx() {
final DatabaseService graphDb = (DatabaseService) arguments.get("graphDb");
TransactionReference tx = transactions.get();
if (tx == null) {
// start new transaction
tx = new TransactionReference(graphDb.beginTx());
queues.set(new ModificationQueue());
buffers.set(new ErrorBuffer());
transactions.set(tx);
currentCommand.set(this);
}
// increase depth
tx.begin();
return this;
}
