[SCXML-226] Support of special send targets #_parent, #_invokeid and #_scxml_sessionid

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5, 0.6, 0.7, 0.8, 0.9
• Fix Version/s: 2.0
• Assignee: Ate Douma
• Reporter: Michael Goerlich
• Created: 11/Feb/15 18:17
• Updated: 10/Dec/17 21:32
• Resolved: 10/Dec/17 21:32

Description

Currently it is not possible to use #_parent and #_invokeid to allow communication between two scxml instances where one invoked the other.

Due to the last changes the _ioprocessors variable was introduced. If the target of a <send> may reference to an entry in the _ioprocessors map, then it should be possible to forward events directly to the registered SCXMLIOProcessor instance.

Given this the invoker must supply a SCXMLIOProcessor for the parent to register within the its SCXMLExecutionContext map as #_invokeId and the invoker must register the parent SCXMLIOProcessor as #_parent within the execution context of the SCXMLExecutor. As well as this the EventDispatcher must take the SCXMLIOProcessor registered for the target from _ioprocessors.

Based on my assumptions I tried to implement this and uploaded the patch to: http://pastebin.com/t855Ugs1 . Hope it helps.
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Update (Ate): besides the above improvements, support for #_scxml_sessionid now also has been added, allowing to send events to the own SCXML session through the external SCXMLIOProcessor.