org.apache.commons.scxml.model
Class Path

java.lang.Object
  org.apache.commons.scxml.model.Path

All Implemented Interfaces:

Serializable

public class Path
extends Object
implements Serializable

A helper class for this SCXML implementation that represents the path taken to transition from one TransitionTarget to another in the SCXML document. The Path consists of the "up segment" that traces up to the least common ancestor and a "down segment" that traces down to the target of the Transition.

See Also:

Serialized Form

Method Summary

List	getDownwardSegment() Get the downward segment.
List	getRegionsEntered() Get the list of regions entered.
List	getRegionsExited() Get the list of regions exited.
State	getScope() Get the farthest state from root which is not being exited nor entered by the transition (null if scope is document root).
List	getUpwardSegment() Get the upward segment.
boolean	isCrossRegion() Does this "path" cross regions.

Methods inherited from class java.lang.Object

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

Method Detail

isCrossRegion

public final boolean isCrossRegion()

Does this "path" cross regions.

Returns:

true when the path crosses a region border(s)

See Also:

State.isRegion()

getRegionsExited

public final List getRegionsExited()

Get the list of regions exited.

Returns:

List a list of exited regions sorted bottom-up; no order defined for siblings

See Also:

State.isRegion()

getRegionsEntered

public final List getRegionsEntered()

Get the list of regions entered.

Returns:

List a list of entered regions sorted top-down; no order defined for siblings

See Also:

State.isRegion()

getScope

public final State getScope()

Get the farthest state from root which is not being exited nor entered by the transition (null if scope is document root).

Returns:

State scope of the transition path, null means global transition (SCXML document level) Scope is the least state which is not being exited nor entered by the transition.

getUpwardSegment

public final List getUpwardSegment()

Get the upward segment.

Returns:

List upward segment of the path up to the scope

getDownwardSegment

public final List getDownwardSegment()

Get the downward segment.

Returns:

List downward segment from the scope to the target