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Spring Framework 2.0.5 API 文档英文版
UnitOfWorkCallback (Spring Framework API 2.0) - Spring Framework 2.0.5 API 文档英文版
org.springframework.orm.toplink
Class UnitOfWorkCallback
java.lang.Object
org.springframework.orm.toplink.UnitOfWorkCallback
- All Implemented Interfaces:
- TopLinkCallback
public abstract class UnitOfWorkCallback
- extends Object
- implements TopLinkCallback
Convenient abstract implementation of the TopLinkCallback interface,
exposing a UnitOfWork to perform write operations on.
The exposed UnitOfWork will either be be the active UnitOfWork of
the current transaction, if any, or a temporarily acquired UnitOfWork
that will be committed at the end of the operation.
- Since:
- 1.2
- Author:
- Juergen Hoeller
- See Also:
doInUnitOfWork(oracle.toplink.sessions.UnitOfWork)
,
Session.getActiveUnitOfWork()
Method Summary |
Object |
doInTopLink(oracle.toplink.sessions.Session session)
Determines the UnitOfWork to work on (either the active UnitOfWork or a
temporarily acquired UnitOfWork) and delegates to doInUnitOfWork . |
protected abstract Object |
doInUnitOfWork(oracle.toplink.sessions.UnitOfWork unitOfWork)
Called with a UnitOfWork to work on, either the active UnitOfWork or a
temporarily acquired UnitOfWork (as determined by the transaction status). |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
UnitOfWorkCallback
public UnitOfWorkCallback()
doInTopLink
public final Object doInTopLink(oracle.toplink.sessions.Session session)
throws oracle.toplink.exceptions.TopLinkException
- Determines the UnitOfWork to work on (either the active UnitOfWork or a
temporarily acquired UnitOfWork) and delegates to
doInUnitOfWork
.
- Specified by:
doInTopLink
in interface TopLinkCallback
- Parameters:
session
- active TopLink Session
- Returns:
- a result object, or
null
if none
- Throws:
oracle.toplink.exceptions.TopLinkException
- if thrown by the TopLink API- See Also:
doInUnitOfWork(oracle.toplink.sessions.UnitOfWork)
doInUnitOfWork
protected abstract Object doInUnitOfWork(oracle.toplink.sessions.UnitOfWork unitOfWork)
throws oracle.toplink.exceptions.TopLinkException
- Called with a UnitOfWork to work on, either the active UnitOfWork or a
temporarily acquired UnitOfWork (as determined by the transaction status).
- Parameters:
unitOfWork
- the TopLink UnitOfWork to perform write operations on
- Returns:
- a result object, or
null
if none
- Throws:
oracle.toplink.exceptions.TopLinkException
- in case of TopLink errors
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