uk.ac.ed.epcc.webapp.forms.result

Class ChainedTransitionResult<T,K>

java.lang.Object

uk.ac.ed.epcc.webapp.forms.result.ChainedTransitionResult<T,K>

Type Parameters:

T - Target type

K - Key type

All Implemented Interfaces:

FormResult

Direct Known Subclasses:

ConfirmTransitionResult, IndexTransitionResult, MailEditResult, ResponseTransitionProvider.ChainedResult, ViewTransitionResult

public class ChainedTransitionResult<T,K>
extends java.lang.Object
implements FormResult

A FormResult to recurse to a new transition after this one. Note that we can pass information to the next transition by caching it in the SessionService to construct a sequence of forms. Care needs to be taken to remove cached values to prevent unintended side effects.

Constructor Summary

Constructors

Constructor and Description
ChainedTransitionResult(AppContext conn, java.lang.Class<? extends TransitionFactory> template, java.lang.String tag, T target, K next) Alternate constructor that performs a lookup of the TransitionFactory This is preferable if an instance is not already available as it can utilise any cached copy.
ChainedTransitionResult(TransitionFactory<K,T> provider, T target, K next)

Method Summary

Modifier and Type	Method and Description
void	accept(FormResultVisitor vis)
boolean	equals(java.lang.Object obj)
TransitionFactory<K,T>	getProvider()
T	getTarget()
K	getTransition()
int	hashCode()
boolean	useURL() Is this a transition to a bookmarkable location.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChainedTransitionResult

public ChainedTransitionResult(TransitionFactory<K,T> provider,
                               T target,
                               K next)

ChainedTransitionResult

public ChainedTransitionResult(AppContext conn,
                               java.lang.Class<? extends TransitionFactory> template,
                               java.lang.String tag,
                               T target,
                               K next)

Alternate constructor that performs a lookup of the TransitionFactory This is preferable if an instance is not already available as it can utilise any cached copy.

Parameters:

conn -

template -

tag -

target -

next -

Method Detail

getTransition

public K getTransition()

getProvider

public TransitionFactory<K,T> getProvider()

getTarget

public T getTarget()

accept

public void accept(FormResultVisitor vis)
            throws java.lang.Exception

Specified by:

accept in interface FormResult

Throws:

java.lang.Exception

useURL

public boolean useURL()

Is this a transition to a bookmarkable location. In web implementations if this method returns true then we redirect to the URL instead of just forwarding to logic. This means the page is at a URL that can be bookmarked. It is also useful for results from state changing operations as this prevents the back button from re-submitting the operation.

Returns:

true if URL needed

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object