Web Services

Oracle Web Services Manager: Authentication and Authorization

by Sitaraman Lakshminarayanan | August 2008 | BPEL SOA Web Services Oracle

The first step in protecting web services is to authenticate and authorize the web service requests. Authentication in web services is the process of verifying that the user has valid credentials to access the web services and authorization is the process of validating that the authenticated user has appropriate privileges to access the web services. Besides restricting access to users with valid credentials and proper privileges, Oracle WSM can track who accessed which service and when—to provide detailed audit trails. In this article, Sitaraman Lakshminarayanan explores how Oracle Web Services Manager can be leveraged to authenticate and authorize the web services requests.

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Securing XML Documents

by Frank Jennings Poornachandra Sarang Ramesh Loganathan | December 2007 | BPEL SOA Web Services

The web services model brings into the system unique security challenges because the business data in the form of XML documents may be required to travel across untrusted networks and has the chance of being manipulated by external systems.

Throughout the entire business transaction, different classes of users and systems need access to the entire business transaction. If any part of this chain is compromised, the whole business application deployed as a service will fail. Web services are inherently about how to share the process of computing across a distributed network of systems. Web services' communication channel being XML, messages are text-based, readable, and self describing.

In this article, authors Poornachandra Sarang, Frank Jennings, Matjaz Juric, and Ramesh Loganathan explain the XML security threats and the guidelines for securing your XML Documents.

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10 Minute Guide to the Enterprise Service Bus and the NetBeans SOA Pack

by David Salter | August 2008 | Architecture & Analysis BPEL SOA Web Services Java Open Source

Enterprise Service Bus (ESB) is a standard-based middleware architecture that allows pluggable components to communicate with each other via a messaging system. In this article by David Salter, we will see in brief, the components inside the ESB architecture and how they communicate with each other. We will also look at how NetBeans SOA pack integrates with OpenESB and the various functionalities it offers with regards to the ESB.

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Digitally Signing and Verifying Messages in Web Services ( part 1 )

by Sitaraman Lakshminarayanan | April 2009 | BPEL SOA Web Services Oracle

This is a two article series by Sitaraman Lakshminarayanan.The article revolves around how to digitally sign and verify messages in web services using Oracle Web Services Manager.The first part will explain concepts like digital signatures,their importance,their functional use with respect to web services, but will mainly focus on how Oracle Web Services Manager can help generate and verify signatures in web services.In the next part,he will explain signature generation and signature verification along with an example.

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Digitally Signing and Verifying Messages in Web Services ( part 2 )

by Sitaraman Lakshminarayanan | April 2009 | BPEL SOA Web Services Oracle

This is the second part of the 2 series article by Sitaraman Lakshminarayanan on Digitally Signing and Verifying Messages in Web Services using Oracle.The article revolves around how to digitally sign and verify messages in web services using Oracle Web Services Manager.The first part explained concepts like digital signatures,their importance,their functional use with respect to web services, but mainly focussed on how Oracle Web Services Manager can help generate and verify signatures in web services.In the this part,he explain signature generation and signature verification along with an example. For all those who missed out the initial action just click onto : http://www.packtpub.com/article/digitally-signing-and-verifying-messages-web-services-part1

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Modeling Orchestration and Choreography in Service Oriented Architecture

by Michael Havey | October 2008 | Architecture & Analysis BPEL Cookbooks SOA Web Services Java Oracle

So far, the general approach towards SOA has been that it is just a tidying-up of application integration. SOA, according to this approach, is not about building new a business functionality but about organizing existing systems. In this article by Michael Havey, we will see that, in reality, SOA is more than merely getting organized. Its principal mandate is to build something new; indeed, SOA is fundamentally about building new processes. We will consider an approach to SOA architecture that is, yes, methodical, but has the burden of actually designing new and challenging orchestration and ESB processes.

In this article, we will build examples of choreography and orchestration, study best practices for message handling in orchestration processes, and develop fundamental orchestration concepts, such as interaction, invisible hub, and deferred choice.

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Aggregate Services in ServiceMix JBI ESB

by Binildas A. Christudas | November 2007 | BPEL SOA Web Services Java Open Source

Integration is a necessary evil using which we can interconnect systems, applications and services to facilitate seamless information flow within and across Organization boundaries. We have been using technologies like JSP, EJB, JMS, etc. in the Java world for building Enterprise Applications (EA). But if we have to interconnect such applications, we will need Enterprise Application Integration (EAI). Many a times we also use EA technologies and tools to do EAI. This will give a short term solution to our integration problems, which may not scale up when we want to perform integration at Enterprise (Customers, Vendors, Partners, ...) level. Java Business Integration (JBI) is the new specification trying to fill this gap of EAI in the Java world. So next time when you want to integrate, don't write a single line of Java code, instead plug and assemble JBI based integration libraries to control your message flow! Does it looks promising? Believe it or read the article below to get yourself convinced.

In this article by Binildas Christudas, we will look into Integration in general and to JBI and ESB in particular. We will then explain few functionalities usually done by integration components like protocol conversions, content transformations, etc., with some code snippets too.

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Using An Object Oriented Approach for Implementing PHP Classes to Interact with Oracle

by Yuli Vasiliev | November 2007 | AJAX BPEL MySQL SOA Web Services Content Management Open Source Oracle PHP Web Development

This article by Yuli Vasiliev examines the object-oriented approach for developing PHP/Oracle applications, as an efficient means to reduce the development time and complexity, and increase the maintainability and flexibility of your applications.

In the following sections, you will learn how to create a simple PHP class to interact with Oracle and then how that class can be modified and reused in different scripts.

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Web Services, SOA, and WS-BPEL Technologies

by Yuli Vasiliev | October 2007 | BPEL MySQL SOA Web Services Open Source Oracle PHP

Service-Oriented Architecture (SOA), as an architectural platform, is adopted today by many businesses as an efficient means for integrating enterprise applications built of Web services—loosely coupled pieces of software that encapsulate their logic within a distinct context and can be easily combined into a composite solution. Although building applications that enable remote access to resources and functionality is not new, doing so according to the principles of service orientation, such as loose coupling, represents a relatively new approach to building composite solutions.

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Binding Web Services in ESB—Web Services Gateway

by Binildas A. Christudas | January 2009 | BPEL SOA Web Services Java Open Source

Since SOI (Service Oriented Integration) is all about integrating multiple SOA-based systems, web services play a critical role in the integration space. This article is all about the importance of web services in integration. We will use the samples to illustrate how to bind web services with the ServiceMix ESB to facilitate integration.

In this article by Binildas A. Christudas, we will cover the following:

  • Web services and binding
  • Introduction to HTTP
  • ServiceMix's servicemix-http component
  • The consumer and provider roles for the ServiceMix JBI components
  • servicemix-http in the consumer and provider roles
  • Web service binding (Gateway) sample
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