Examples of org.skife.jdbi.v2.tweak.TransactionHandler

org.skife.jdbi.v2.exceptions.TransactionException
Interface which defines callbacks to be used when transaction methods are called on a handle. Used by specifying on an IDBI instance. All Handle instances opened from that IDBI will use the handler specified.
The default implementation, ConnectionTransactionHandler, explicitely manages the transactions on the underlying JDBC Connection.

        {
            m = r.getMetaData();
        }
        catch (SQLException e)
        {
            throw new ResultSetException("Unable to obtain metadata from result set", e);
        }


        try
        {
            for (int i = 1; i <= m.getColumnCount(); i ++)
            {
                String key = m.getColumnName(i);
                String alias = m.getColumnLabel(i);
                Object value = r.getObject(i);
                row.put(alias != null ? alias : key, value);
            }
        }
        catch (SQLException e)
        {
            throw new ResultSetException("Unable to access specific metadata from " +
                                         "result set metadata", e);
        }
        return row;
    }

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            boolean initial = handle.getConnection().getAutoCommit();
            localStuff.put(handle, new LocalStuff(initial));
            handle.getConnection().setAutoCommit(false);
        }
        catch (SQLException e) {
            throw new TransactionException("Failed to start transaction", e);
        }
    }

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                handle.getConnection().setAutoCommit(stuff.getInitialAutocommit());
                stuff.getCheckpoints().clear();
            }
        }
        catch (SQLException e) {
            throw new TransactionException("Failed to commit transaction", e);
        }
        finally {
            // prevent memory leak if commit throws an exception
            if (localStuff.containsKey(handle)) {
                localStuff.remove(handle);

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                handle.getConnection().setAutoCommit(stuff.getInitialAutocommit());
                stuff.getCheckpoints().clear();
            }
        }
        catch (SQLException e) {
            throw new TransactionException("Failed to rollback transaction", e);
        }
        finally {
            // prevent memory leak if rollback throws an exception
            if (localStuff.containsKey(handle)) {
                localStuff.remove(handle);

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        try {
            final Savepoint savepoint = conn.setSavepoint(name);
            localStuff.get(handle).getCheckpoints().put(name, savepoint);
        }
        catch (SQLException e) {
            throw new TransactionException(String.format("Unable to create checkpoint %s", name), e);
        }
    }

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    {
        final Connection conn = handle.getConnection();
        try {
            final Savepoint savepoint = localStuff.get(handle).getCheckpoints().remove(name);
            if (savepoint == null) {
                throw new TransactionException(String.format("Attempt to rollback to non-existant savepoint, '%s'",
                                                             name));
            }
            conn.releaseSavepoint(savepoint);
        }
        catch (SQLException e) {
            throw new TransactionException(String.format("Unable to create checkpoint %s", name), e);
        }
    }

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    {
        final Connection conn = handle.getConnection();
        try {
            final Savepoint savepoint = localStuff.get(handle).getCheckpoints().remove(name);
            if (savepoint == null) {
                throw new TransactionException(String.format("Attempt to rollback to non-existant savepoint, '%s'",
                                                             name));
            }
            conn.rollback(savepoint);
        }
        catch (SQLException e) {
            throw new TransactionException(String.format("Unable to create checkpoint %s", name), e);
        }
    }

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    {
        try {
            return !handle.getConnection().getAutoCommit();
        }
        catch (SQLException e) {
            throw new TransactionException("Failed to test for transaction status", e);
        }
    }

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     * Called when a transaction is rolled back
     * Will throw a RuntimeException to force transactional rollback
     */
    public void rollback(Handle handle)
    {
        throw new TransactionException("Rollback called, this runtime exception thrown to halt the transaction");
    }

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        {
            return ! handle.getConnection().getAutoCommit();
        }
        catch (SQLException e)
        {
            throw new TransactionException("Failed to check status of transaction", e);
        }
    }

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