1,870 research outputs found
On the Automated Synthesis of Enterprise Integration Patterns to Adapt Choreography-based Distributed Systems
The Future Internet is becoming a reality, providing a large-scale computing
environments where a virtually infinite number of available services can be
composed so to fit users' needs. Modern service-oriented applications will be
more and more often built by reusing and assembling distributed services. A key
enabler for this vision is then the ability to automatically compose and
dynamically coordinate software services. Service choreographies are an
emergent Service Engineering (SE) approach to compose together and coordinate
services in a distributed way. When mismatching third-party services are to be
composed, obtaining the distributed coordination and adaptation logic required
to suitably realize a choreography is a non-trivial and error prone task.
Automatic support is then needed. In this direction, this paper leverages
previous work on the automatic synthesis of choreography-based systems, and
describes our preliminary steps towards exploiting Enterprise Integration
Patterns to deal with a form of choreography adaptation.Comment: In Proceedings FOCLASA 2015, arXiv:1512.0694
Flexible learning systems : an insight into personalised learning systems
Web services are defined as accessible software programs ex- posed through an Internet interface description which enhances client to server requests and are not only easily invoked and consumed but they provide interoperability for applications through Service-Oriented Architectures. The Semantic Web, Web services and Web technologies, have so far been mostly utilised in business models and processes throughout industry. This research paper proposes to show how these emergent technologies are also being exploited for E-learning environments. Such a service applies in fact not only to businesses and the work-place but also to academic settings. The ability to make a provision for flexible, personalised and adaptable services is heavily dependent on Web technologies which need to be moulded into rich, dynamic and active environments based on individual user needs and requirements. The paper aims to highlight ongoing projects in this area offering a brief description of their findings and achievements as well as identify future trends in the areas of flexible learning systems.peer-reviewe
An approach for automated service selection and ranking using services choreography
In today’s highly competitive market, it is critical to provide customers services with a high level of
configuration to answer their business needs. Knowing in advance the performance associated with a
specific choreography of services (e.g., by taking into account the expected results of each component
service) represents an important asset that allows businesses to provide a global service tailored to
customers’ specific requests. This research work aims at advancing the state-of-the-art in this area by
proposing an approach for service selection and ranking using services choreography, predicting the
behavior of the services considering customers’ requirements and preferences, business process constraints
and characteristics of the execution environment
Forum Session at the First International Conference on Service Oriented Computing (ICSOC03)
The First International Conference on Service Oriented Computing (ICSOC) was held in Trento, December 15-18, 2003. The focus of the conference ---Service Oriented Computing (SOC)--- is the new emerging paradigm for distributed computing and e-business processing that has evolved from object-oriented and component computing to enable building agile networks of collaborating business applications distributed within and across organizational boundaries. Of the 181 papers submitted to the ICSOC conference, 10 were selected for the forum session which took place on December the 16th, 2003. The papers were chosen based on their technical quality, originality, relevance to SOC and for their nature of being best suited for a poster presentation or a demonstration. This technical report contains the 10 papers presented during the forum session at the ICSOC conference. In particular, the last two papers in the report ere submitted as industrial papers
Integration of BPM systems
New technologies have emerged to support the global economy where for instance suppliers, manufactures and retailers are working together in order to minimise the cost and
maximise efficiency. One of the technologies that has become a buzz word for many businesses is business process management or BPM. A business process comprises activities
and tasks, the resources required to perform each task, and the business rules linking these activities and tasks. The tasks may be performed by human and/or machine actors.
Workflow provides a way of describing the order of execution and the dependent relationships between the constituting activities of short or long running processes.
Workflow allows businesses to capture not only the information but also the processes that transform the information - the process asset (Koulopoulos, T. M., 1995). Applications which involve automated, human-centric and collaborative processes across organisations are
inherently different from one organisation to another. Even within the same organisation but over time, applications are adapted as ongoing change to the business processes is seen as the norm in today’s dynamic business environment. The major difference lies in the specifics of business processes which are changing rapidly in order to match the way in which businesses operate. In this chapter we introduce and discuss Business Process Management (BPM) with a focus on the integration of heterogeneous BPM systems across multiple organisations. We identify the problems and the main challenges not only with regards to technologies but also in the social and cultural context. We also discuss the issues that have arisen in our bid to find the solutions
Conceptual modelling of adaptive web services based on high-level petri nets
Service technology geared by its SOA architecture and enabling Web services is
rapidly gaining in maturity and acceptance. Consequently, most worldwide
(private and corporate) cross-organizations are embracing this paradigm by
publishing, requesting and composing their businesses and applications in the
form of (web-)services. Nevertheless, to face harsh competitiveness such service oriented
cross-organizational applications are increasingly pressed to be highly
composite, adaptive, knowledge-intensive and very reliable. In contrast to that,
Web service standards such as WSDL, WSBPEL, WS-CDL and many others
offer just static, manual, purely process-centric and ad-hoc techniques to deploy
such services.
The main objective of this thesis consists therefore in leveraging the development
of service-driven applications towards more reliability, dynamically
and adaptable knowledge-intensiveness. This thesis puts forward an innovative
framework based on distributed high-level Petri nets and event-driven business
rules. More precisely, we developed a new variant of high-level Petri Nets formalism
called Service-based Petri nets (CSrv-Nets), that exhibits the following
potential characteristics. Firstly, the framework is supported by a stepwise
methodology that starts with diagrammatical UML-class diagrams and business
rules and leads to dynamically adaptive services specifications. Secondly, the
framework soundly integrates behavioural event-driven business rules and stateful
services both at the type and instance level and with an inherent distribution.
Thirdly, the framework intrinsically permits validation through guided graphical
animation. Fourthly, the framework explicitly separates between orchestrations
for modelling rule-intensive single services and choreography for cooperating
several services through their governing interactive business rules. Fifthly, the
framework is based on a two-level conceptualization: (1) the modelling of any
rule-centric service with CSrv-Nets; (2) the smooth upgrading of this service
modelling with an adaptability-level that allows for dynamically shifting up and
down any rule-centric behavior of the running business activities
Architectures v/s Microservices
As it evolves, technology has always found a better way to build applications and improve their efficiency. New techniques have been learned by adapting old technologies and observing how markets shift towards new trends to satisfy their customers and shareholders. By taking Service Oriented Architecture (SOA) and evolving techniques in cloud computing, Web 2.0 emerged with a new pattern for designing an architecture evolved from the conventional monolithic approach known as microservice architecture (MSA). This new pattern develops an application by breaking the substantial use into a group of smaller applications, which run on their processes and communicate through an API. This style of application development is suitable for many infrastructures, especially within a cloud environment. These new patterns advanced to satisfy the concepts of domain-driven, continuous integration, and automated infrastructure more effectively. MSA has created a way to develop and deploy small scalable applications, which allows enterprise-level applications to dynamically adjust to their resources.
This paper discusses what that architecture is, what makes it necessary, what factors affect best-fit architecture choices, how microservices-based architecture has evolved, and what factors are driving service-based architectures, in addition to comparing SOA and microservice. By analyzing a few popular architectures, the factors which help in choosing the architecture design will be compared with the MSA to show the benefits and challenges that may arise as an enterprise shifts their developing architecture to microservices
An adaptive service oriented architecture: Automatically solving interoperability problems.
Organizations desire to be able to easily cooperate with other companies and still be flexible. The IT infrastructure used by these companies should facilitate these wishes. Service-Oriented Architecture (SOA) and Autonomic Computing (AC) were introduced in order to realize such an infrastructure, however both have their shortcomings and do not fulfil these wishes. This dissertation addresses these shortcomings and presents an approach for incorporating (self-) adaptive behavior in (Web) services. A conceptual foundation of adaptation is provided and SOA is extended to incorporate adaptive behavior, called Adaptive Service Oriented Architecture (ASOA). To demonstrate our conceptual framework, we implement it to address a crucial aspect of distributed systems, namely interoperability. In particular, we study the situation of a service orchestrator adapting itself to evolving service providers.
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