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Business Process Execution Language for Web Services (BPEL4. WS)Messaging and Transaction Coordination: General reference document on standards related to coordination of messages/transactions, as well as choreography, workflow, and business brocess modeling, especially in the Web Services arena.[January 1. OASIS announced that consortium members have submitted a charter proposal for a new WS- BPEL Extension for People (BPEL4.
People) Technical Committee. Companies sponsoring the proposal include Active Endpoints, Adobe, BEA, IBM, Oracle, SAP, Software AG, and Sun Microsystems. The designated TC Convenor is Jeff Mischkinsky (Oracle). This Technical Committee proposal follows a June 2. Active Endpoints, Adobe, BEA Systems, IBM, Oracle, and SAP AG, announcing that the two- part BPEL4. People specification would be submitted to OASIS in the near future.
The Web Services Business Process Execution Language Version 2. WS- BPEL) specification was published as an approved OASIS Standard in April 2.
It provides a language for the specification of executable and abstract business processes, extending the Web Services interaction model to support business transactions. The FAQ document published by the OASIS Web Services Business Process Execution Language Technical Committee recognizes that "BPEL was not designed for human workflow." The proposed BPEL4. People Technical Committee would define: (1) extensions to the OASIS WS- BPEL 2. Standard to enable human interactions, and (2) a model of human interactions that are service- enabled. This work will be carried out through continued refinement of the Version 1. June 2. 00. 7, consistent with the WS- BPEL Extension for People — BPEL4.
People Joint White Paper published by IBM and SAP in July 2. In particular, the new TC work will focus upon: (1) Defining the specification of a WS- BPEL extension enabling the definition of human interactions ("human tasks") as part of a WS- BPEL process; (2) Defining the specification of a model enabling the definition of human tasks that are exposed as Web services; (3) Defining a programming interface enabling human task client applications to work with human tasks.[November 2. Transactional BPEL Processes with AO4. BPEL Aspects." By Anis Charfi (SAP Research, CEC Darmstadt, Darmstadt, Germany), Benjamin Schmeling (UBL Informationssysteme, Neu- Isenburg, Germany), and Mira Mezini (Software Technology Group, TU Darmstadt, Germany). Presented at the Fifth IEEE European Conference on Web Services (ECOWS 2.
November 2. 6- 2. Halle (Saale), Germany. Recently, OASIS approved two standards respectively for Web Service composition and for Web Service transactions.
Nevertheless, it is still unclear how WS- BPEL and the WS- TX family of specifications interoperate, i. BPEL processes. In this paper, we present several transactional requirements in BPEL processes and argue that BPEL's compensation mechanism provides only limited support for a few of these requirements, e. ACID properties. To support transactional BPEL processes, we use the AO4. BPEL process container framework.
In this framework, the transaction requirements of the process activities are specified declaratively in a deployment descriptor and an aspectbased container is generated automatically to integrate the process execution with the transaction middleware, which is provided as a transaction Web Service based on Apache Kandula.. To enable transactional workflows in BPEL, we used the AO4.
BPEL process container framework, which provides several benefits. It is open and light- weight, i. Moreover, further middleware Web Services can be integrated. Another advantage is the separation of concerns as functional and non- functional code are separated. In addition, the use of XPath allows to quantify over several processes. On the other hand our approach has some limitations w.
AO4. BPEL engine. As future work, we will provide transaction aspects that allow the BPEL process to be a participant in a transaction. This is needed in many scenarios, e.
Moreover, we will implement appropriate XSLT templates to generate aspects for restoring variable values in case of transaction rollback and for enforcing the variable isolation level serializable. In addition, the business activity port type will be implemented as soon as support for WS- BA is available in Sandesha. Another thrust of future work is to decouple the AO4.
BPEL language and its implementation from SOAP so that it can be used with the other messaging layers that can underly BPEL.." [cache][June 2. BPEL4. People Specifications Integrate Human Interactions Into Business Process." A group of six technology vendors, including Active Endpoints, Adobe, BEA Systems, IBM, Oracle, and SAP AG, announced the publication of two 'BPEL4. People' specifications which define an approach for integrating human interactions using Web Services Business Process Execution Language (WS- BPEL) 2.
In July 2. 00. 5, IBM and SAP jointly issued a white paper "WS- BPEL Extension for People — BPEL4. People." It describes scenarios where users are involved in business processes, and motivates and outlines appropriate extensions to WS- BPEL to address these scenarios. BPEL4. People as released in 2. WS- BPEL Extension for People (BPEL4. People) Version 1.
Web Services Human Task (WS- Human. Task) Version 1. 0". These two specifications take the ideas outlined in the white paper and together provide a concrete realization of them. BPEL4. People extends the capabilities of WS- BPEL to support a broad range of human interaction patterns, allowing for expanded modeling of business processes within the WS- BPEL language. WS- BPEL focuses on business processes that orchestrate Web service interactions.
However, in general, business processes are comprised of a broad spectrum of activities that most often require the participation of people to perform tasks, review or approve steps and enter data — for example, a credit approval scenario that may require approval on certain transaction limits or activity levels. These human interactions are now addressed in the new BPEL4.
People specifications. The authors of BPEL4. People plan to submit the specifications to OASIS in the near future, and will propose a Technical Committee to produce an OASIS standard based on it.[June 2. BPEL4. People aims to bridge gap between humans and SOA. BPEL4. People standard for SOA- based business processes heads to OASIS." By Rich Seeley.
From Search. Web. Services. com (June 2. Recognizing that service- oriented architecture (SOA) business processes involve people too, a group of vendors today published specifications aimed at extending the Business Process Execution Language (BPEL) 2.
The BPEL4. People specifications will be submitted to the OASIS standards body in the fall, but are ready for developers and architects to download today from the Web sites of the participating vendors, said Ed Cobb, vice president for emerging technologies and standards at BEA Systems Inc. The other vendors supporting the specifications are IBM, Oracle, SAP AG, Adobe Systems Inc. Active Endpoints Inc. Michael Bechauf, vice president of industry standards at SAP: 'BPEL4. People consists of two specifications. WS- BPEL Extension for People layers features on top of the recently approved OASIS WS- BPEL 2.
WS- BPEL process definitions. The companion specification, Web Services Human Task, introduces the definition of stand- alone human tasks, including the properties, behavior and operations used to manipulate them. The two specifications are designed so they can either be used together or independently.. BPEL4. People specification defines a way to integrate tasks that need to be executed by a human user with an SOA- based business process.
It introduces the notion of people activity and that of a task that needs to be executed as part of that activity. To date, the BPEL 2. SOA, which is invoking Web services or receiving a message. The BPEL4. People specification adds the ability to request a people activity within an SOA- based business process.
Diane Jordan, program manager in emerging Internet standards at IBM and co- chair of the OASIS BPEL technical committee: 'The need to link software- driven business processes to the people who interact with the computer systems was a requirement those working on the original BPEL specification and heard from businesses from the beginning. BPEL4. People provides a standard way for SOA- based business processes to communicate with people through alerts and reminders that can be sent to a desktop or even a cell phone.. April 0. 9, 2. 00. How to Deliver Composite Applications with Java, WS- BPEL, and SOA." By Gopalan Suresh Raj, Prabhu Balashanmugam, and Kevin Schmidt.
From SYS- CON Virtualization (April 0. The vast adoption of Java technology by the industry in the past decade is a testament to the power of Java. Development of new applications, services, and components using Java is not going away, but many organizations have progressively moved to the next phase in maturing their IT Infrastructure. This phase is driven by many factors including how businesses operate.
There are some technologies that are starting to play a critical role in this phase, for example, service- oriented architecture (SOA) is a key enabler. Java EE technology is a natural service- enabler of existing applications, thereby forming the foundation of SOA. Service- enabled applications create the opportunity to compose functions from disparate and cross- functional applications to model business processes that transcend application and enterprise boundaries. Web Services Business Process Execution Language (WS- BPEL) provides a faster way to compose and orchestrate services by reuse. Java and WS- BPEL complement each other perfectly and provide a solid foundation for integrating services and delivering composite applications. This article will briefly explain what these technologies are and how they can work together to improve developer productivity and business agility.