Building a high-level architecture federated interoperable framework from legacy information systems

Abstract

This paper aims at improving the re-implementation of existing information systems when they are called to be involved in a system of systems, i.e. a federation of enterprise information systems that interoperate. The idea is reusing the local experiences coming from the previous development of the existing information system with the process of Model Discovery. To avoid re-developing the entire system when the enterprise needs to cooperate with others, this approach proposes to create local interfaces to code and decode information. The interfaces are instantiated by using models discovered. The interfaces are developed in accordance with the HLA standard that proposes message interoperability and synchronisation mechanisms among distributed systems. First, the authors recall the strong points of MDA/ADM methodologies for model transformation from conceptual level to implementation. Besides that they also recall the HLA standard. From this, a MDA&HLA framework is proposed to implement distributed enterprise components from the conceptual level of the federated enterprise interoperability approach. In addition, the authors add a model reversal methodology to the framework to guide re-implementation of legacy information systems, when called to achieve interoperability with other systems. To extend the scope of the approach, implemented web services are combined with HLA in order to facilitate the use of HLA in large distributed execution. The paper ends with an implementation example for validating the approach.

Time-based orchestration of workflow, interoperability with G-Devs/Hla

“…In HLA 1516 Evolved [10] the service approach is demanded as core feature. Nevertheless no software addresses completely that goal at the moment [26].…”

“…This option requires the use of a systematic and direct connection of all components to the RTI. Also, [25,26] have used G-DEVS models and HLA RTI to simulate the behaviour of several components by mixing HLA and web service calls. The distributed simulation principle of [26] was based on the original pessimistic algorithm described in [6], adding more recent advances on lookahead described in [4].…”

“…Also, [25,26] have used G-DEVS models and HLA RTI to simulate the behaviour of several components by mixing HLA and web service calls. The distributed simulation principle of [26] was based on the original pessimistic algorithm described in [6], adding more recent advances on lookahead described in [4]. These set-ups, with RTI as mediator of all messages exchanged, can be interesting from the interoperability point of view but they can cause overheads and slow down the communication as discussed in [27].…”

“…The goal was to establish distributed simulation for G-DEVS Models but also to open G-DEVS to interoperability with other software components. Also the connector developed in [26] for the open source Portico RTI [28] has been reused to facilitate the connection between RTI and the calls to web services format used in Taverna.…”

Model-based approaches for interoperability of next generation enterprise information systems: state of the art and future challenges

“…These converted UML models include Packages, Interfaces, Classes, and also the properties, operations of classes, associations and dependencies among classes. For instance, Tu et al (2014) have proposed a methodology for model reversal in the domain of EIS. This methodology has been based on MoDisco linked with other Model Driven approaches (ADM, MDI, HLA FEDEP).…”