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@Target(value=FIELD) @Documented @Retention(value=RUNTIME) @UseWith(value={COMPONENT,MIXIN,PAGE}) public @interface Persist
Identifies a field as persistent, meaning its value persists from one request to the next. Different strategies exist
for how this is accomplished, the most common being the default, "session", which stores the field's value in the
Session
.
In most cases, the value will be omitted and will default to the empty string. This forces a search for the correct
strategy. Starting with the component (or mixin) itself, a check is made for the meta data property
tapestry.persistence-strategy
. If a value is found, it is used, otherwise the search continues up the
inheritance hierarchy, towards the page. If not found, then the "session" strategy is used.
In this way, the session persistence strategy for a component and all of its sub-components can be controlled by the containing component.
MetaDataLocator
,
PersistenceConstants
,
ActivationRequestParameter
Optional Element Summary | |
---|---|
String |
value
The strategy used to persist the value. |
public abstract String value
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