org.apache.tapestry.annotations Annotation Type Retain
Marker annotation placed on fields whose value should be retained past the end of the request. This is most often associated with fields that are lazily loaded. By marking such fields with the Retain annotation, the fields will not be discarded at the end of the request.
This is quite different from Persist, because the value that's allowed to be retained is not stored persistently; it is simply not cleared out. A subsequent request, even from the same user, may be processed by a different instance of the page where the value is still null.
This annotation should only be used with lazily-evaluated objects that contain no client-specific information.
http://tapestry.apache.org/tapestry5/apidocs/org/apache/tapestry/annotations/Retain.html -Filip On 2008-04-08 23:08, DavidWei wrote:
I am using T5 for my current application. There are cases when I need to have a field's value retain after the request. I know using @Persist it will work, but I do not want to store so many values in session. I found there are some samples which use @Retain. By definition, it is said as "By marking such fields with the Retain annotation, the fields will not be discarded at the end of the request... This is quite different from Persist, because the value that's allowed to be retained is not stored persistently; it is simply not cleared out...". If it is not cleaned out after the request, when is it cleaned out? Thanks, David
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