Examples of org.helidb.txn.Transaction.rollback()

org.helidb.txn.Transaction.rollback()
Roll back the transaction. This discards all changes made and ends it. Future calls to {@link #getCurrentTransactionOrNull()} by this threadwill return {@code null} until a new transaction is started. @throws IllegalStateException If this transaction has already beencommitted or rolled back.

        txn.commit();


        txn = Transaction.startTransaction(false);
        db.insert(3, 30L);
        db.insert(4, 40L);
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());

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        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        txn.commit();


        txn = Transaction.startTransaction(false);
        db.update(1, 100L);
        db.update(2, 200L);
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());

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        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        txn.commit();


        txn = Transaction.startTransaction(false);
        db.update(1, 100L);
        db.update(2, 200L);
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());

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        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        txn = Transaction.startTransaction(true);
        assertEquals(0, db.size());
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        txn.commit();


        txn = Transaction.startTransaction(false);
        db.clear();
        db.insert(1, 100L);
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());

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        assertEquals(20L, db.get(2).longValue());
        assertEquals(10L, db.get(1).longValue());
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        assertEquals(30L, db.get(3).longValue());
        assertEquals(20L, db.get(2).longValue());
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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