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.

        assertEquals("value 2", db.get("key 2"));
        assertEquals("value 1", db.get("key 1"));
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        txn.commit();


        txn = Transaction.startTransaction(false);
        db.update("key 1", "value 1p");
        db.update("key 2", "value 2p");
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals("value 2", db.get("key 2"));
        assertEquals("value 1", db.get("key 1"));

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        assertEquals("value 2", db.get("key 2"));
        assertEquals("value 1", db.get("key 1"));
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        txn.commit();


        txn = Transaction.startTransaction(false);
        db.update("key 1", "value 1p");
        db.update("key 2", "value 2p");
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals("value 2", db.get("key 2"));
        assertEquals("value 1", db.get("key 1"));

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        assertEquals("value 2", db.get("key 2"));
        assertEquals("value 1", db.get("key 1"));
      }
      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("key 1", "value 1p");
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals("value 2", db.get("key 2"));
        assertEquals("value 1", db.get("key 1"));

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        assertEquals("value 2", db.get("key 2"));
        assertEquals("value 1", db.get("key 1"));
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        assertEquals("value 3", db.get("key 3"));
        assertEquals("value 2", db.get("key 2"));
      }
      finally
      {
        txn.rollback();
      }
    }
    finally
    {
      tearDownDatabase(db);

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        db.insert("key 3", "value 3");
        txn.commit();


        txn = Transaction.startTransaction(false);
        db.compact();
        txn.rollback();


        txn = Transaction.startTransaction(true);
        assertEquals(2, db.size());
        assertEquals("value 3", db.get("key 3"));
        assertEquals("value 2", db.get("key 2"));

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