i3.dragos.gm.core.event
Class GraphEntityClassHierachyEvent

java.lang.Object
  java.util.EventObject
      i3.dragos.core.services.events.DragosEvent
          i3.dragos.gm.core.event.DataEvent
              i3.dragos.gm.core.event.GraphEntityClassEvent
                  i3.dragos.gm.core.event.GraphEntityClassHierachyEvent

All Implemented Interfaces:

java.io.Serializable

public class GraphEntityClassHierachyEvent
extends GraphEntityClassEvent

A GraphEntityClassHierachyEvent is triggered when a super/sub relationship is declared or undeclared in the Schema. The source of this event will always be the super class.

Author:

Thorsten Hermes <thermes@i3.informatik.rwth-aachen.de>

See Also:

Serialized Form

Field Summary

static int	CREATE Event type constant: Identifies the creation of a super/sub relationship.
static int	DELETE Event type constant: Identifies the deletion of a super/sub relationship.

Fields inherited from class i3.dragos.gm.core.event.GraphEntityClassEvent

DECLARE, UNDECLARE

Fields inherited from class java.util.EventObject

source

Constructor Summary

GraphEntityClassHierachyEvent(GraphEntityClass superClass, GraphEntityClass subClass, int eventType)
Constructs a new event.

Method Summary

DataChangeSet	getAffectedElements() Returns a DataChangeSet of elements affected by this event.
GraphEntityClass	getSubClass() Returns the sub graph entity class which caused the event.
GraphEntityClass	getSuperClass() Returns the super graph entity class which caused the event.

Methods inherited from class i3.dragos.gm.core.event.GraphEntityClassEvent

getGraphEntityClass

Methods inherited from class i3.dragos.gm.core.event.DataEvent

getDataSourceURL

Methods inherited from class i3.dragos.core.services.events.DragosEvent

getEventClass, getEventType, toString

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

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

Field Detail

CREATE

public static final int CREATE

Event type constant: Identifies the creation of a super/sub relationship.

See Also:

Constant Field Values

DELETE

public static final int DELETE

Event type constant: Identifies the deletion of a super/sub relationship.

See Also:

Constant Field Values

Constructor Detail

GraphEntityClassHierachyEvent

public GraphEntityClassHierachyEvent(GraphEntityClass superClass,
                                     GraphEntityClass subClass,
                                     int eventType)

Constructs a new event.

Parameters:

superClass - The super graph entity class.

subClass - The sub graph entity class.

eventType - The type of event.

Method Detail

getSuperClass

public final GraphEntityClass getSuperClass()

Returns the super graph entity class which caused the event. This is just a convenience to avoid casting the result of getSource().

Returns:

the super graph entity class which caused the event.

getSubClass

public final GraphEntityClass getSubClass()

Returns the sub graph entity class which caused the event.

Returns:

the sub graph entity class which caused the event.

getAffectedElements

public DataChangeSet getAffectedElements()

Returns a DataChangeSet of elements affected by this event.

This method is mainly used by the EventManager to determine which graph entities / graph entity classes need to be marked "dirty".

This list should only contain elements directly affected by the event. Any indirectly affected elements (subclasses, instances...) can be determined later automatically.

The default implementation in DataEvent returns a DataChangeSet that just contains the source of the event.

This implementation returns both the super and the sub class in the DataChangeSet.

Overrides:

getAffectedElements in class DataEvent

Returns:

a DataChangeSet of elements affected by this event (may be empty, but never null).