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Allows an implementation to be notified when a Msg is about to be pushed.
Method Summary | |
void |
afterPush(StreamOutputStream anOut,
Msg aMsg,
Object anOpaque)
Notifies the implementation that a Msg has been pushed. |
Object |
beforePush(StreamOutputStream anOut,
Msg aMsg)
Notifies the implementation that a Msg is being pushed. |
Method Detail |
public Object beforePush(StreamOutputStream anOut, Msg aMsg) throws IOException
anOut
- Used to write information before the Msg itself.aMsg
- Msg being pushed.
IOException
- Indicates that an I/O error has occured.public void afterPush(StreamOutputStream anOut, Msg aMsg, Object anOpaque) throws IOException
anOut
- Used to write information after the Msg itself.aMsg
- Msg which has just been pushed.anOpaque
- Value returned by beforePush.
IOException
- Indicates that an I/O error has occured.
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