Spring Framework

org.springframework.transaction.support
Interface TransactionCallback<T>

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
 T doInTransaction(TransactionStatus status)
          Gets called by TransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback) within a transactional context.
 

Method Detail

doInTransaction

T doInTransaction(TransactionStatus status)
Gets called by TransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback) 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), CallbackPreferringPlatformTransactionManager.execute(org.springframework.transaction.TransactionDefinition, org.springframework.transaction.support.TransactionCallback)

Spring Framework