org.apache.tapestry.services
Interface ApplicationStatePersistenceStrategy

All Known Implementing Classes:

SessionApplicationStatePersistenceStrategy

public interface ApplicationStatePersistenceStrategy

Used by ApplicationStateManager to manage a specific kind of ASO persistence. The stategy is responsible for managing ASO instances within its domain.

See Also:

ApplicationStatePersistenceStrategySource

Method Summary

<T> boolean	exists(Class<T> asoClass) Returns true if the ASO already exists, false if null.
<T> T	get(Class<T> asoClass, ApplicationStateCreator<T> creator) Gets the ASO from the domain.
<T> void	set(Class<T> asoClass, T aso) Stores a new ASO, possibly replacing the existing one.

Method Detail

get

<T> T get(Class<T> asoClass,
          ApplicationStateCreator<T> creator)

Gets the ASO from the domain. If the ASO does not already exist, it is created and stored, then returned.

set

<T> void set(Class<T> asoClass,
             T aso)

Stores a new ASO, possibly replacing the existing one.

Type Parameters:

T -

Parameters:

asoClass -

aso - instance to store, or null to delete existing

exists

<T> boolean exists(Class<T> asoClass)

Returns true if the ASO already exists, false if null.