public void open(WriteConfiguration config) {
graph = (StandardTitanGraph) TitanFactory.open(config);
features = graph.getConfiguration().getStoreFeatures();
tx = graph.newTransaction();
mgmt = graph.openManagement();
}
public void newTx() {
if (null != tx && tx.isOpen()) tx.commit();
// tx = graph.newThreadBoundTransaction();
tx = graph.newTransaction();
}