JoinNode extends ActivityNode, ExecutionEdgeDestination, ExecutionEdgesSource

Joins multiple split execution threads back together. Halts until all threads are complete.

An ActivityOperation may contain any number of JoinNodes. Each JoinNode must have at least one incoming ExecutionEdge, and at least one outgoing ExecutionEdge.

If an executing thread arrives at a JoinNode, the thread will be removed from the associated thread set of that thread. If the thread set is not empty, execution of the thread will be suspended until such a point that the thread set is empty. If the thread set is empty, then the multithreaded execution originating from the original SplitNode will be considered complete, and the execution flow will continue from the SplitNode as normal. If an unthreaded execution flow arrives at a JoinNode, an exception must occur.

The JoinNode element is based off the UML JoinNode model element.

[JoinNode.html]

Implementation Notes

A SplitNode executing on the client will split execution into separate threads until each thread meets up at a JoinNode. [JoinSplitClientSide]
A SplitNode executing on the server will split execution into separate threads until each thread meets up at a JoinNode. [JoinSplitServerSide]
Currently execution split is implemented in a single threaded way; each execution flow is executed sequentially until all flows are complete. [ExecutionFlow]

Inherited Attributes

generatedRule : EString (optional)
To assist in debugging, this attribute may be populated with the name of the model completion rule that created this element. More extensive traceability support may be provided in the future.
id : EString (optional)
A unique identifier for this model element. Should be globally unique.
isGenerated : EBoolean (optional)
Set to true if the current element has been generated.

Inherited References

generatedBy : [0...*] GeneratesElements [opposite: generatedElements]
A list of elements that generated this element; conversely, overriding the source will prevent this element from being created.
inExecutions : [0...*] ExecutionEdge [opposite: to]
A list of incoming ExecutionEdges.
outExecutions : [0...*] ExecutionEdge [opposite: from]
A list of outgoing ExecutionEdges.

JoinNode extends ActivityNode, ExecutionEdgeDestination, ExecutionEdgesSource

Examples

Implementation Notes

Inference Rules

Constraints

Attributes

Inherited Attributes

Children

Inherited Children

References

Inherited References

Extensions

Inherited Extensions