TransactionListener (cayenne-doc: Cayenne Documentation 4.2 API)

```
public interface TransactionListener
```
A callback that is notified as transaction progresses through stages. It can customize transaction isolation level, etc.

Since:

4.0

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default Connection`	`decorateConnection(Transaction tx, Connection connection)`	This method could be used to decorate or substitute new connection initiated inside a Cayenne transaction.
`void`	`willAddConnection(Transaction tx, String connectionName, Connection connection)`
`void`	`willCommit(Transaction tx)`
`void`	`willRollback(Transaction tx)`

Method Detail

willCommit
```
void willCommit(Transaction tx)
```

willRollback
```
void willRollback(Transaction tx)
```

willAddConnection

void willAddConnection(Transaction tx,
                       String connectionName,
                       Connection connection)

decorateConnection
```
default Connection decorateConnection(Transaction tx,
                                      Connection connection)
```
This method could be used to decorate or substitute new connection initiated inside a Cayenne transaction.
The default implementation returns the same connection.

Parameters:

tx - transaction that initiated connection

connection - connection (it could be decorated by other listeners)

Returns:

connection

Since:

4.2