org.xmlBlaster.util.queue
Interface I_EntryFilter

public interface I_EntryFilter

Callback when entries are accessed from storage.

Method Summary

I_Entry

intercept(I_Entry entry, I_Storage storage) Invoked by the I_Map or I_Queue implementation when entries are read from the store.

Method Detail

intercept

I_Entry intercept(I_Entry entry,
                  I_Storage storage)

Invoked by the I_Map or I_Queue implementation when entries are read from the store. Your implementation may not throw any exception, the behavior in such a case is undefined. Note: Expect to receive same entry twice if the underlying implementation is a CACHE. There the RAM and the JDBC store may independently deliver the same entry if the entry is persistent and currently in the cache.

Parameters:

entry - The current entry read, is never null

storage - the method isTransient() allows to check the source of the event (RAM or JDBC) Is never null

Returns:

The entry to use, if null the given entry is filtered away. It can be a new, manipulated entry as well