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Service Oriented Architecture + SOAP

-Robin John. Service Oriented Architecture + SOAP. Service Oriented Architecture:. Group of services that communicate(data passing or 2 or more services coordinating some activity) with each other to build applications out of software services.

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Service Oriented Architecture + SOAP

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  1. -Robin John Service Oriented Architecture + SOAP

  2. Service Oriented Architecture: • Group of services that communicate(data passing or 2 or more services coordinating some activity) with each other to build applications out of software services. • Services as basic constructs.(Service-oriented paradigm to programming utilizes services as the basic constructs to support development of rapid low-cost and easy composition of distr applications.)‏ • 'Service-oriented' approach to programming(based on idea of composing applications by discovering and invoking network avlbl services rather than building new applications or by invoking avlbl applications to accomplish some task.)‏

  3. SOA tree:

  4. Service Oriented Architecture: • Logical way of designing SW system to provide services to either end-user app or to other services distributed in a network via published and discoverable interfaces.

  5. Principles of SOA: • Guiding principles: • Reuse, interoperability, modularity • Standards compliance • Services identification and categorization, provision and delivery & monitoring and tracking • Specific architectural principles: • Service Encapsulation • Service loose coupling • Service contract • Service abstraction • Service Reusability • Service composability • Service Autonomy • Service Optimization • Service Discoverability

  6. Challenges of SOA: • Managing services meta-data • Lack of testing in SOA space • Appropriate levels of security

  7. SOA to conclude: • Service-Oriented Architecture (SOA) is an architectural approach (or style) for constructing complex software-intensive systems from a set of universally interconnected and interdependent building blocks, called services.

  8. SOAP: • Simple Object Access Protocol: • a light-weight messaging protocol for information exchange in a decentralized, distributed environment built on XML. • consists of 3 parts: • envelope:(message format)‏ • encoding rules: • representation convention:

  9. 4 main areas covered: 4 main areas covered: • Message format: • Description: • Set of rules: • Set of conventions: Main functionalities: • Send & receive HTTP transport protocol pkts • Process XML messages Heavy weight protocol example: • ORPC

  10. SOAP example:

  11. Applications: • RPC: Remote Procedure Call • EDI: Electronic Document Interchange; basis of automated business transactions.

  12. SOAP faults:: • Used to carry error and/or status information within a SOAP message. • 4 elements: Fault code: Fault string: Fault actor: Fault details

  13. SOAP Adv and Disadv: • Adv: • Platform, language independent • Use standardised HTTP • Runs over HTTP, and hence avoids firewall filtering • Handles decentralized and distributed environment • Disadv: • Security • Statelessness • Serialization by value, not by reference.

  14. SOAP: Future THANKYOU !

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