TX perf test

@Test
public class TxTest {
  public void testTx() {
  	OGlobalConfiguration.TX_COMMIT_SYNCH.setValue(true);

    int TOP_COUNTER = 0, BOTTOM_COUNTER = 0, LINK_COUNTER = 0;

		 OGraphDatabase database = new OGraphDatabase("plocal:D:/Temp/my_db_orient").create();
		long ts = System.currentTimeMillis();
    ODocument firstLayerVertex, secondLayerVertex;

    for (int i = 0; i < 1000; i++) {
      database.begin(OTransaction.TXTYPE.OPTIMISTIC);
      firstLayerVertex = database.createVertex().field("name", "first" + TOP_COUNTER).field("weight", TOP_COUNTER++);
			firstLayerVertex.save();

      for (int j = 0; j < 100; j++) {
        secondLayerVertex = database.createVertex().field("name", "second" + BOTTOM_COUNTER).field("weight", BOTTOM_COUNTER++);
				secondLayerVertex.save();

        database.createEdge(firstLayerVertex, secondLayerVertex).field("name", "link" + LINK_COUNTER++).save();
      }
      database.commit();
    }

		System.out.println(System.currentTimeMillis() - ts);

//    final Iterable<ODocument> gwList = database.browseVertices();
//    if (gwList != null) {
//      for (final ODocument gw : gwList) {
//        System.out.println(gw.toJSON());
//      }
//    }


		database.close();


  }