org.apache.tapestry5.internal.services
Class ApplicationStateManagerImpl

java.lang.Object
  org.apache.tapestry5.internal.services.ApplicationStateManagerImpl

All Implemented Interfaces:

ApplicationStateManager

public class ApplicationStateManagerImpl
extends Object
implements ApplicationStateManager

Constructor Summary

ApplicationStateManagerImpl(Map<Class,ApplicationStateContribution> configuration, ApplicationStatePersistenceStrategySource source, ObjectLocator locator)

Method Summary

<T> boolean	exists(Class<T> ssoClass) Returns true if the SSO already exists, false if it has not yet been created.
<T> T	get(Class<T> ssoClass) For a given class, find the SSO for the class, creating it if necessary.
<T> T	getIfExists(Class<T> ssoClass) For a given class, find the SSO for the class.
<T> void	set(Class<T> ssoClass, T sso) Stores a new SSO, replacing the existing SSO (if any).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ApplicationStateManagerImpl

public ApplicationStateManagerImpl(Map<Class,ApplicationStateContribution> configuration,
                                   ApplicationStatePersistenceStrategySource source,
                                   ObjectLocator locator)

Method Detail

get

public <T> T get(Class<T> ssoClass)

Description copied from interface: ApplicationStateManager

For a given class, find the SSO for the class, creating it if necessary. The manager has a configuration that determines how an instance is stored and created as needed. A requested SSO not in the configuration is assumed to be created via a no-args constructor, and stored in the session.

Specified by:

get in interface ApplicationStateManager

Parameters:

ssoClass - identifies the SSO to access or create

Returns:

the SSO instance

getIfExists

public <T> T getIfExists(Class<T> ssoClass)

Description copied from interface: ApplicationStateManager

For a given class, find the SSO for the class. The manager has a configuration that determines how an instance is stored.

Specified by:

getIfExists in interface ApplicationStateManager

Parameters:

ssoClass - identifies the SSO to access or create

Returns:

the SSO instance or null if it does not already exist

set

public <T> void set(Class<T> ssoClass,
                    T sso)

Description copied from interface: ApplicationStateManager

Stores a new SSO, replacing the existing SSO (if any). Storing the value null will delete the SSO so that it may be re-created later.

Specified by:

set in interface ApplicationStateManager

Parameters:

ssoClass - the type of SSO

sso - the SSO instance

exists

public <T> boolean exists(Class<T> ssoClass)

Description copied from interface: ApplicationStateManager

Returns true if the SSO already exists, false if it has not yet been created.

Specified by:

exists in interface ApplicationStateManager

Parameters:

ssoClass - used to select the SSO

Returns:

true if SSO exists, false if null