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Torben Schreiter

Alistair P Barros

Marlon G Dumas

Alistair Barros

An orchestration engine may execute multiple, concurrently running instances of a process model, where each of the instances of the process model includes one or more receiving objects. A messaging endpoint may be shared by the instances of the process model and may be configured to receive messages. A subscription handler may handle multiple subscriptions for the instances and may be configured to define a first subscription for a first instance of the multiple instances, where the first subscription includes a correlation expression, an association with the messaging endpoint, and an association with a first receiving object within the first instance. The subscription handler also may associate the first subscription with the first instance and initialize the first subscription associated with the first instance. A routing manager may route received messages that match the first subscription to the first receiving object.

Subscriptions for routing incoming messages to process instances in a process execution engine

A buffer may be configured to store a plurality of items, and to be accessed by one or more activities of an instance of a process model. A scheduler may be configured to schedule execution of each of a plurality of activities of the process model, and to determine an activation of an activity of the plurality of activities. The scheduler may include an activity manager configured to access an activity profile of the activity upon the determining of the activation, the activity profile including buffer access characteristics according to which the activity is designed to access the buffer. A process execution unit may be configured to execute the activity and may include a buffer access manager configured to access the buffer according to the buffer access characteristics of the activity profile, and to thereby facilitate an exchange of at least one item between the buffer and the activity.

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Berlin, Germany

Torben Schreiter