Bite: Workflow Composition for the Web

Curbera, Francisco; Duftler, Matthew J.; Khalaf, Rania; Lovell, Douglas

doi:10.1007/978-3-540-74974-5_8

Cited by 50 publications

(32 citation statements)

References 5 publications

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“…The Bite language however only partially addresses the requirements we have identified in Sect. 3, as it lacks support for content-type negotiation and provides only limited compliance with the uniform interface principle (PUT is not supported [29]). In [30], the state transition logic of a RESTful service has been designed using a Petri-net formalism, which could also potentially be used for composition purposes.…”

Section: Discussionmentioning

confidence: 99%

Composing RESTful Services with JOpera

Pautasso

2009

Software Composition

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Abstract. The REST architectural style is emerging as an alternative technology platform for the realization of service-oriented architectures. In this paper, we apply the notion of composition to RESTful services and derive a set of language features that are required by composition languages for RESTful services: dynamic late binding, dynamic typing, content-type negotiation, state inspection, and compliance with the uniform interface principle. To show how such requirements can be satisfied by an existing composition language, we include a case-study using the JOpera visual composition language. In it, we present how to build a composite application (DoodleMap) out of some well-known, public and currently existing RESTful service APIs.

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Section: Discussionmentioning

confidence: 99%

Composing RESTful Services with JOpera

Pautasso

2009

Software Composition

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“…The idea of a RESTful Web service API to access the state of workflow instances has been also described in [28], where an ad-hoc solution based on client callback URIs was proposed to deal with the problem of push notifications. The feature of hypermedia-based discovery of the active tasks of a workflow was also featured in the Bite [5] project. In our architecture we introduce a more general design based on hierarchically nested feeds.…”

Section: Related Workmentioning

confidence: 99%

Push-Enabling RESTful Business Processes

Pautasso

Wilde

2011

Lecture Notes in Computer Science

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Abstract. Representational State Transfer (REST) as an architectural style for service design has seen substantial uptake in the past years. However, some areas such as Business Process Modeling (BPM) and push services so far have not been addressed in the context of REST principles. In this work, we look at how both BPM and push can be combined so that business processes can be modeled and observed in a RESTful way. Based on this approach, clients can subscribe to be notified when certain states in a business process are reached. Our goal is to design an architecture that brings REST's claims of loose coupling and good scalability to the area of BPM, and still allow process-driven composition and interaction between resources to be modeled.

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“…We follow a similar, but less generic, approach, when we propose a specific set of resource-oriented activities to natively support the composition of RESTful Web services. Bite [47] (or the IBM Project Zero assembly flow language) can be seen as a simplified variant of BPEL with a reduced set of activities specifically targeting the development of collaborative Web application workflows [48]. Similar to BPEL for REST, the language supports the invocation of RESTful Web services and the corresponding runtime allows to automatically publish processes as resources.…”

Section: Related Workmentioning

confidence: 99%

RESTful Web service composition with BPEL for REST

Pautasso¹

2009

Data & Knowledge Engineering

161

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a b s t r a c tCurrent Web service technology is evolving towards a simpler approach to define Web service APIs that challenges the assumptions made by existing languages for Web service composition. RESTful Web services introduce a new kind of abstraction, the resource, which does not fit well with the message-oriented paradigm of the Web service description language (WSDL). RESTful Web services are thus hard to compose using the Business Process Execution Language (WS-BPEL), due to its tight coupling to WSDL. The goal of the BPEL for REST extensions presented in this paper is twofold. First, we aim to enable the composition of both RESTful Web services and traditional Web services from within the same process-oriented service composition language. Second, we show how to publish a BPEL process as a RESTful Web service, by exposing selected parts of its execution state using the REST interaction primitives. We include a detailed example on how BPEL for REST can be applied to orchestrate a RESTful e-Commerce scenario and discuss how the proposed extensions affect the architecture of a process execution engine.

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Bite: Workflow Composition for the Web

Cited by 50 publications

References 5 publications

Composing RESTful Services with JOpera

Composing RESTful Services with JOpera

Push-Enabling RESTful Business Processes

RESTful Web service composition with BPEL for REST

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