Package org.soulwing.prospecto.runtime.discriminator

Class ConcreteDiscriminatorEventService

java.lang.Object

org.soulwing.prospecto.runtime.discriminator.ConcreteDiscriminatorEventService

All Implemented Interfaces:

DiscriminatorEventService

public class ConcreteDiscriminatorEventService
extends Object
implements DiscriminatorEventService

A DiscriminatorEventService implementation.

Author:

Carl Harris

Field Summary

Fields

Modifier and Type	Field	Description
static ConcreteDiscriminatorEventService	INSTANCE

Fields inherited from interface org.soulwing.prospecto.runtime.discriminator.DiscriminatorEventService

DISCRIMINATOR_FLAG_KEY

Method Summary

Modifier and Type	Method	Description
View.Event	findDiscriminatorEvent(View.Event triggerEvent, Iterator<View.Event> events)	Finds the first discriminator event in the given event stream, skipping any structures encountered while searching.
DiscriminatorStrategy	findStrategy(ViewNode node, ScopedViewContext context)	Finds the appropriate discriminator strategy for the subject container node.
boolean	isDiscriminatorNeeded(ContainerNode node)	Tests whether a node requires a discriminator.
View.Event	newDiscriminatorEvent(ViewNode node, Class<?> subtype, ScopedViewContext context)	Creates a new discriminator event for the given node and subtype.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final ConcreteDiscriminatorEventService INSTANCE

Method Detail

isDiscriminatorNeeded

public boolean isDiscriminatorNeeded(ContainerNode node)

Description copied from interface: DiscriminatorEventService

Tests whether a node requires a discriminator.

Specified by:

isDiscriminatorNeeded in interface DiscriminatorEventService

Parameters:

node - the subject node

Returns:

true if node requires a discriminator

newDiscriminatorEvent

public View.Event newDiscriminatorEvent(ViewNode node,
                                        Class<?> subtype,
                                        ScopedViewContext context)

Description copied from interface: DiscriminatorEventService

Creates a new discriminator event for the given node and subtype.

Specified by:

newDiscriminatorEvent in interface DiscriminatorEventService

Parameters:

node - the subject node

subtype - subtype represented by the node

context - view context

Returns:

discriminator event

findDiscriminatorEvent

public View.Event findDiscriminatorEvent(View.Event triggerEvent,
                                         Iterator<View.Event> events)

Description copied from interface: DiscriminatorEventService

Finds the first discriminator event in the given event stream, skipping any structures encountered while searching.

Specified by:

findDiscriminatorEvent in interface DiscriminatorEventService

events - stream of events to search

Returns:

discriminator or null if not found

findStrategy

public DiscriminatorStrategy findStrategy(ViewNode node,
                                          ScopedViewContext context)

Description copied from interface: DiscriminatorEventService

Finds the appropriate discriminator strategy for the subject container node.

Specified by:

findStrategy in interface DiscriminatorEventService

Parameters:

node - subject node

context - view context

Returns:

discriminator strategy (never null)