TransactionCallback (Spring Framework) - Spring Framework 1.2.9 API 文档英文版

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org.springframework.transaction.support
Interface TransactionCallback

All Known Implementing Classes:: TransactionCallbackWithoutResult

public interface TransactionCallback

Callback interface for transactional code. To be used with TransactionTemplate's execute method, assumably often as anonymous class within a method implementation.

Typically used to gather various calls to transaction-unaware low-level services into a higher-level method implementation with transaction demarcation.

Since:: 17.03.2003
Author:: Juergen Hoeller
See Also:: TransactionTemplate

Method Summary

Object doInTransaction(TransactionStatus status)
Gets called by TransactionTemplate.execute within a transactional context.

Method Summary
`Object`	`doInTransaction(TransactionStatus status)` Gets called by TransactionTemplate.execute within a transactional context.

Method Detail

doInTransaction

Object doInTransaction(TransactionStatus status)

Gets called by TransactionTemplate.execute 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. An exception gets propagated to the caller of the template.

Note when using JTA: JTA transactions only work with transactional JNDI resources, so implementations need to use such resources if they want transaction support.

Parameters:: status - associated transaction status
Returns:: a result object, or null
See Also:: TransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback)