“…In this paper we have presented an approach for the realization of context-aware choreographies. The proposed approach refines and extends the one envisioned in our previous work, 13 in which a generic context-awareness feature is realized only through an a priori specification of some well-defined alternative interactions. The context-aware adaptation is realized at three different levels: at the message level, at participant level, and at the task-flow level.…”
Section: Concluding Discussionmentioning
confidence: 65%
“…This work thoroughly extends the approach proposed in our preliminary work for the automated synthesis of context‐aware service choreographies 13 . There, 13 context‐awareness is only dealt with at design time through the a priori specification of all possible choreography variations. As novel advances, in this paper we: propose a novel solution to the realization of context‐aware choreographies that makes use of a context model in order to define the context, its acquisition and evaluation;present the novel notion of context‐aware CDs that now dynamically realize context‐aware coordination and adaptation, capable of correctly accessing at run time and coordinating the involved services according to the current context conditions;show our solution at work on a use‐case designed for the ConnectPA project, which shows the composition and the interoperation of different services in the PA;report on experimental data.…”
Section: Introductionmentioning
confidence: 86%
“…In order to express choreography variability, when defining task flows that require adaptation, we leverage the modeling solution proposed in our preliminary work 13 . In that work, variation points are introduced as new BPMN2 elements that allow to define variable parts in the choreography model.…”
Section: Setting the “Context”mentioning
confidence: 99%
“…This work thoroughly extends the approach proposed in our preliminary work for the automated synthesis of context-aware service choreographies. 13 There, 13 context-awareness is only dealt with at design time through the a priori specification of all possible choreography variations. As novel advances, in this paper we:…”
Section: Novel Contributionmentioning
confidence: 99%
“…In order to express choreography variability, when defining task flows that require adaptation, we leverage the modeling solution proposed in our preliminary work. 13 In that work, variation points are introduced as new BPMN2 elements that allow to define variable parts in the choreography model. The possible alternative interactions are then designed as choreography variants, which in turn are modeled as sub-choreographies and are associated to the variation point(s).…”
Section: F I G U R E 1 Coordination Delegates Interaction Patternmentioning
Modern technologies and emerging wireless communication solutions in the Information and Communications Technology (ICT) world are empowering the spread of the most disparate ready‐to‐use software services distributed over the globe and accessed by an increasing number of users. This state of affairs encourages the development of systems based on the reuse of existing services through composition approaches, notably choreographies. Also Public Administrations are driven towards a digitalization process which exploits composition approaches to build complex and interoperable systems that can be remotely accessed by citizens and authorities. However, an automatic support is needed in order to realize the service composition and the distributed coordination logic that enforces the correct choreography realization. Moreover, the need for building dynamic and user‐centered systems calls for the realization of choreographies capable to adjust their behavior to the surrounding context. This work presents our proposal for addressing the choreography realization problem, by describing an automated process for the synthesis of choreography‐based systems. The synthesized systems are location‐aware and able to adapt the services' interaction according to the user's needs and context conditions. We show and evaluate our approach at work on a real use case scenario in the Public Administration domain.
“…In this paper we have presented an approach for the realization of context-aware choreographies. The proposed approach refines and extends the one envisioned in our previous work, 13 in which a generic context-awareness feature is realized only through an a priori specification of some well-defined alternative interactions. The context-aware adaptation is realized at three different levels: at the message level, at participant level, and at the task-flow level.…”
Section: Concluding Discussionmentioning
confidence: 65%
“…This work thoroughly extends the approach proposed in our preliminary work for the automated synthesis of context‐aware service choreographies 13 . There, 13 context‐awareness is only dealt with at design time through the a priori specification of all possible choreography variations. As novel advances, in this paper we: propose a novel solution to the realization of context‐aware choreographies that makes use of a context model in order to define the context, its acquisition and evaluation;present the novel notion of context‐aware CDs that now dynamically realize context‐aware coordination and adaptation, capable of correctly accessing at run time and coordinating the involved services according to the current context conditions;show our solution at work on a use‐case designed for the ConnectPA project, which shows the composition and the interoperation of different services in the PA;report on experimental data.…”
Section: Introductionmentioning
confidence: 86%
“…In order to express choreography variability, when defining task flows that require adaptation, we leverage the modeling solution proposed in our preliminary work 13 . In that work, variation points are introduced as new BPMN2 elements that allow to define variable parts in the choreography model.…”
Section: Setting the “Context”mentioning
confidence: 99%
“…This work thoroughly extends the approach proposed in our preliminary work for the automated synthesis of context-aware service choreographies. 13 There, 13 context-awareness is only dealt with at design time through the a priori specification of all possible choreography variations. As novel advances, in this paper we:…”
Section: Novel Contributionmentioning
confidence: 99%
“…In order to express choreography variability, when defining task flows that require adaptation, we leverage the modeling solution proposed in our preliminary work. 13 In that work, variation points are introduced as new BPMN2 elements that allow to define variable parts in the choreography model. The possible alternative interactions are then designed as choreography variants, which in turn are modeled as sub-choreographies and are associated to the variation point(s).…”
Section: F I G U R E 1 Coordination Delegates Interaction Patternmentioning
Modern technologies and emerging wireless communication solutions in the Information and Communications Technology (ICT) world are empowering the spread of the most disparate ready‐to‐use software services distributed over the globe and accessed by an increasing number of users. This state of affairs encourages the development of systems based on the reuse of existing services through composition approaches, notably choreographies. Also Public Administrations are driven towards a digitalization process which exploits composition approaches to build complex and interoperable systems that can be remotely accessed by citizens and authorities. However, an automatic support is needed in order to realize the service composition and the distributed coordination logic that enforces the correct choreography realization. Moreover, the need for building dynamic and user‐centered systems calls for the realization of choreographies capable to adjust their behavior to the surrounding context. This work presents our proposal for addressing the choreography realization problem, by describing an automated process for the synthesis of choreography‐based systems. The synthesized systems are location‐aware and able to adapt the services' interaction according to the user's needs and context conditions. We show and evaluate our approach at work on a real use case scenario in the Public Administration domain.
The rise of the IoT and Industry 4.0 has increased the complexity of collaborating business processes, i. e., choreographies, as more partners and assets are involved. However, maintaining and executing business choreographies are complex tasks. Moreover, enabling robust and reliable execution is important, as failures or delays cause high costs among partners. For example, manufacturing companies usually depend on different suppliers, and it is crucial to be up-to-date about possible delays in shipments as this leads to delays in the manufacturing of their products. In this case, a choreography needs to be designed and operated in a way that it can adapt to cope with such problems. This requires i) timely recognition and tamper-resistent logging of problems that occur at each involved partner, which are referred to as situations in the scope of this article, and ii) an approach for a timely adaptation of choreographies based on occurring situations. Therefore, in this article, we introduce DiStOPT, an approach to i) model and recognize situations in a distributed and timely manner, and ii) model and execute situation-aware choreographies based on the recognized situations. The contributions are evaluated in a manufacturing scenario and validated by a prototypical implementation.
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