org.jbpm.graph.def
Class GraphElement

java.lang.Object
  org.jbpm.graph.def.GraphElement

All Implemented Interfaces:

Serializable, Identifiable

Direct Known Subclasses:

Node, ProcessDefinition, Task, Transition

public abstract class GraphElement
extends Object
implements Identifiable, Serializable

See Also:

Serialized Form

Field Summary

protected String	description
protected Map	events
protected List	exceptionHandlers
protected String	name
protected ProcessDefinition	processDefinition

Constructor Summary

GraphElement()

GraphElement(String name)

Method Summary

Event	addEvent(Event event)
ExceptionHandler	addExceptionHandler(ExceptionHandler exceptionHandler)
protected ExecuteActionJob	createAsyncActionExecutionJob(Token token, Action action)
boolean	equals(Object o)
void	executeAction(Action action, ExecutionContext executionContext)
protected ExceptionHandler	findExceptionHandler(Throwable exception)
void	fireAndPropagateEvent(String eventType, ExecutionContext executionContext)
void	fireEvent(String eventType, ExecutionContext executionContext)
String	getDescription()
Event	getEvent(String eventType)
Map	getEvents() gets the events, keyed by eventType (java.lang.String).
List	getExceptionHandlers() is the list of exception handlers associated to this graph element.
long	getId()
String	getName()
GraphElement	getParent()
List	getParentChain()
List	getParents()
ProcessDefinition	getProcessDefinition()
abstract String[]	getSupportedEventTypes() indicative set of event types supported by this graph element.
boolean	hasEvent(String eventType)
boolean	hasEvents()
int	hashCode()
void	raiseException(Throwable exception, ExecutionContext executionContext) looks for an exception handler in this graph element and then recursively up the parent hierarchy.
Event	removeEvent(Event event)
void	removeExceptionHandler(ExceptionHandler exceptionHandler)
void	reorderExceptionHandler(int oldIndex, int newIndex)
void	setDescription(String description)
void	setName(String name)
void	setProcessDefinition(ProcessDefinition processDefinition)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

name

protected String name

description

protected String description

processDefinition

protected ProcessDefinition processDefinition

events

protected Map events

exceptionHandlers

protected List exceptionHandlers

Constructor Detail

GraphElement

public GraphElement()

GraphElement

public GraphElement(String name)

Method Detail

getSupportedEventTypes

public abstract String[] getSupportedEventTypes()

indicative set of event types supported by this graph element. this is currently only used by the process designer to know which event types to show on a given graph element. in process definitions and at runtime, there are no constraints on the event-types.

getEvents

public Map getEvents()

gets the events, keyed by eventType (java.lang.String).

hasEvents

public boolean hasEvents()

getEvent

public Event getEvent(String eventType)

hasEvent

public boolean hasEvent(String eventType)

addEvent

public Event addEvent(Event event)

removeEvent

public Event removeEvent(Event event)

getExceptionHandlers

public List getExceptionHandlers()

is the list of exception handlers associated to this graph element.

addExceptionHandler

public ExceptionHandler addExceptionHandler(ExceptionHandler exceptionHandler)

removeExceptionHandler

public void removeExceptionHandler(ExceptionHandler exceptionHandler)

reorderExceptionHandler

public void reorderExceptionHandler(int oldIndex,
                                    int newIndex)

fireEvent

public void fireEvent(String eventType,
                      ExecutionContext executionContext)

fireAndPropagateEvent

public void fireAndPropagateEvent(String eventType,
                                  ExecutionContext executionContext)

createAsyncActionExecutionJob

protected ExecuteActionJob createAsyncActionExecutionJob(Token token,
                                                         Action action)

executeAction

public void executeAction(Action action,
                          ExecutionContext executionContext)

raiseException

public void raiseException(Throwable exception,
                           ExecutionContext executionContext)

looks for an exception handler in this graph element and then recursively up the parent hierarchy. If an exception handler is found, it is applied. If the exception handler does not rethrow, the exception is considered handled. Otherwise the rethrown exception is propagated up the parent hierarchy.

Throws:

DelegationException - if no applicable exception handler is found

findExceptionHandler

protected ExceptionHandler findExceptionHandler(Throwable exception)

getParent

public GraphElement getParent()

getParents

public List getParents()

Returns:

the ancestors of this graph element ordered by depth.

getParentChain

public List getParentChain()

Returns:

this graph element plus the ancestors ordered by depth.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

getId

public long getId()

Specified by:

getId in interface Identifiable

getName

public String getName()

setName

public void setName(String name)

getDescription

public String getDescription()

setDescription

public void setDescription(String description)

getProcessDefinition

public ProcessDefinition getProcessDefinition()

setProcessDefinition

public void setProcessDefinition(ProcessDefinition processDefinition)