TransactionCallback (Spring Framework 4.3.30.RELEASE API)

All Known Implementing Classes:
TransactionCallbackWithoutResult
```
public interface TransactionCallback<T>
```
Callback interface for transactional code. Used with TransactionTemplate's execute method, often as anonymous class within a method implementation.
Typically used to assemble various calls to transaction-unaware data access services into a higher-level service method with transaction demarcation. As an alternative, consider the use of declarative transaction demarcation (e.g. through Spring's Transactional annotation).
Since:
17.03.2003
Author:
Juergen Hoeller
See Also:
TransactionTemplate, CallbackPreferringPlatformTransactionManager

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`T`	`doInTransaction(TransactionStatus status)`	Gets called by `TransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback<T>)` within a transactional context.

- Method Detail
  - doInTransaction
```
T doInTransaction(TransactionStatus status)
```
    Gets called by TransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback<T>) within a transactional context. Does not need to care about transactions itself, although it can retrieve and influence the status of the current transaction via the given status object, e.g. setting rollback-only.
    Allows for returning a result object created within the transaction, i.e. a domain object or a collection of domain objects. A RuntimeException thrown by the callback is treated as application exception that enforces a rollback. Any such exception will be propagated to the caller of the template, unless there is a problem rolling back, in which case a TransactionException will be thrown.
    Parameters:
    status - associated transaction status
    Returns:
    a result object, or null
    See Also:
    TransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback<T>), CallbackPreferringPlatformTransactionManager.execute(org.springframework.transaction.TransactionDefinition, org.springframework.transaction.support.TransactionCallback<T>)