Read e-book online Business Process Driven SOA using BPMN and BPEL: From PDF

By Kapil Pant, Matjaz Juric

ISBN-10: 1847191460

ISBN-13: 9781847191465

Find out how to version company methods in an SOA-compliant technique utilizing BPMN, translate them into BPEL and execute them at the SOA platform. a pragmatic consultant with real-world examples illustrating all key options. This e-book is for CIOs, executives, SOA venture managers, enterprise procedure analysts, BPM and SOA architects, who're liable for enhancing the potency of industrial procedures via IT, or for designing SOA. It presents a high-level assurance of commercial procedure modeling, however it additionally offers sensible improvement examples on the way to flow from version to execution. we predict the readers to be acquainted with the fundamentals of SOA

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Extra info for Business Process Driven SOA using BPMN and BPEL: From Business Process Modeling to Orchestration and Service Oriented Architecture

Example text

BPEL makes it easy to invoke operations of services either synchronously or asynchronously. We can invoke operations either in sequence, or in parallel. We can also wait for callbacks. BPEL provides a rich vocabulary for fault handling, which is very important, as robust business processes need to react to failures in a smart way. BPEL also provides support for long-running process and compensation, and allows us to undo partial work done by a process that has not terminated successfully. The following are the most important features that BPEL provides: • • • • • • • • • • Describing the logic of business processes through composition of services Composing larger business processes by combining smaller processes and services Handling synchronous and asynchronous (often long-running) operation invocations on services, and managing callbacks that occur later Invoking service operations in sequence, or in parallel Selectively compensating completed activities in case of failures Maintaining multiple long-running transactional activities, which are also interruptible Resuming interrupted or failed activities to minimize re-work Routing incoming messages to the appropriate processes and activities Correlating requests within and across business processes Scheduling activities based on the execution time and defining their order of execution • Executing activities in parallel and defining how parallel flows merge based on synchronization conditions • Handling message-related and time-related events Services SOA and BPEL approaches rely on services.

ESB can also enable reliable message delivery and provide other value-added features, which are very useful in mission critical systems. Usually, ESB also addresses aspects of security and transaction management. It allows us to configure secure access to the services and processes, and to monitor the access. It also allows the definition of services that should participate in transactions. Some ESBs even allow us to choose between ACID (WS-AtomicTransactions) and compensating transactions (WS-BusinessActivity).

23 ] SOA and Business Processes • The systematic approach to process optimization requires less adoption for the employees, who therefore, becomes more amenable to changes. • The real-time monitoring of process performance (through BAM) provides valuable insights into the efficiency of the current processes, and helps in identifying points of optimization. • With SOA, IT becomes more flexible and can respond faster to changes in business. This makes the whole company more agile, which improves its competitive position, reduces its response time to market changes and reduces competitive threats.

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Business Process Driven SOA using BPMN and BPEL: From Business Process Modeling to Orchestration and Service Oriented Architecture by Kapil Pant, Matjaz Juric


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