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Top 10 SOA and Web services tutorials and articles -- November 2009
Check out which SOA and Web services tutorials and articles developerWorks
readers found most interesting last month.
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08 Jan 2008 |
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Standards and Web services
Web services are a set of emerging standards that enable interoperable
integration between heterogeneous IT processes and systems. You can think of them as
a new breed of Web application that is self-contained and self-describing, and that
can provide functionality and interoperation ranging from the basic to the most
complicated business and scientific processes. In short, Web services hold the
promise for providing a common standard mechanism for interoperable integration
among disparate systems, and the key to their utility is their standardization. This
common mechanism for delivering a "service" makes them ideal for implementing a
Service-Oriented Architecture (SOA).
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21 Aug 2009 |
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Real users, real results, and proven innovation with SOA
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23 May 2007 |
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WS-Spec Workshops
WS-Spec Workshops are events, sponsored by multiple vendors, that give you the opportunity to learn about advanced Web Services specifications (WS-* specs) and to offer feedback and input to improve future drafts.
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06 Apr 2007 |
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New to SOA and Web services
Whether you are an IT architect, a developer, or an administrator or you just want to find out more about what SOA is and how it can help your organization, you can learn a lot by following along in this article as JK Enterprises, a fictional company, goes through the process of implementing SOA solutions. First, let's take a general look at SOA and the method IBM offers to help you adopt SOA solutions and advance them if you've already started.
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05 Mar 2007 |
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The value of patterns
This paper helps to articulate the value of patterns and demonstrate how they can be harvested from real engagements, in alignment with architectural decisions.
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02 Feb 2007 |
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WebSphere eXtreme Scale REST data service technical preview
The WebSphere eXtreme Scale REST data service is a Java HTTP service
that implements Microsoft’s ADO.NET Data Services. The REST data service
allows any HTTP client to access a WebSphere eXtreme Scale 7.0 grid.
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30 Oct 2009 |
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Executing SOA
In Executing SOA, four experienced SOA implementers share realistic, proven, "from-the-trenches" guidance for successfully delivering on even the largest and most complex SOA initiative.
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23 Apr 2008 |
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SOA governance
Service-Orientated Architecture (SOA) is fast becoming the IT software approach of
choice for many major enterprises, and SOA governance is critical to successful SOA
adoption. Find out why in the following white papers.
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08 Nov 2007 |
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Training and certification
If you're looking for opportunities to build your SOA and Web services skills, start here. IBM offers a range of online tutorials, Web-based courses, and instructor-led classroom training.
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06 Apr 2007 |
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IBM business process management enabled by SOA
Business process management (BPM) enabled by SOA -- what is it and what
does it mean to your business? How can IBM products and expertise help with a
BPM enabled by SOA solution? This page is a starting point for you to learn
more.
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25 Apr 2007 |
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Availability and Response Time Management in SOA environment with Tivoli Composite Application Manager for Transactions: A case study
As Service Oriented Architecture (SOA) is becoming increasingly important in software integration, an application built on SOA infrastructure is not standalone, instead, it depends on other applications. While some of these depended applications are inside the enterprise, some others are external applications provided by third-party providers. The complexity of the system, as a result, increases the difficulty to quickly sense and isolate application’s availability and response time problem. This article analyzes a typical application availability and response time management case in SOA environment, and presents a solution based on ITCAM for Transactions 7.1.
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20 Nov 2009 |
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Service Registry with Advanced Search Capability, Part 1: Concepts, Process, and Components
In this Part 1 of the series you will learn the reasons for requiring advanced
search capability in a SOA Web services/services registry. Such advanced search
capability is not provided by the currently avaialble registeries, which are either
based on UDDI or other schemes. In this article, you will learn the basic conceptual
process and software components which will be needed to implement such advanced
capability.
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Articles |
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05 Nov 2009 |
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CRUD Operation using JSF,Web Services and OJB
This article explains the use case of adding, updating, searching and deleting using JSF, Web Services and OJB in
WebSphere Integration Developer version 6.1. The article discusses the steps in
developing each layer including the integration among these layers.
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30 Oct 2009 |
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OSGi and Spring: Part 2: Build and deploy OSGi as Spring bundles using Felix
Build and package Java classes as OSGi bundles using the Spring DM framework in a Felix
container. This article, Part 2 of this series, shows you how to create bundles using the Spring
framework and then deploy them in a Felix runtime environment. You will see how the core OSGi
framework dependency is removed through a simple Spring-based configuration.
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Articles |
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30 Mar 2009 |
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ESB Testing Best Practice
The purpose of this article is to introduce the function test method and performance test method of the Enterprise Service Bus. The testing method is summarized based on the real customer project, and is proved as a successful testing method.
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30 Nov 2009 |
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Using WSS4J/Axis2 API to send WS-Security Signature and Encryption Profiles to
Axis2/Rampart Web Service
To enable Web services to communicate securely and to guarantee the correctness of the data
being communicated, WS-Security specification specifies several Security Profiles, using
which one can achieve Data Non-reputation and Data Encryption along with User
Authenticity. This article discusses how WS-Security Profiles including UsernameToken, Timestamp, Signature and
Encryption can be included in the SOAP Message headers to specify.
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Articles |
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24 Nov 2009 |
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Model Synchronization between WBM and WID 6.1.2
This article illustrates the closed cycle development
between WebSphere Business Modeler (WBM) and WebSphere
Integration Developer (WID) version 6.1.2. It starts by
designing a simple business model on WBM and importing this
model into WID. Some changes will be applied on the WID module,
and then they will be imported back to WBM to update the
model. After that, Other changes will be applied on the WBM model, and then is merged into the exisiting WID module.
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Articles |
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10 Oct 2009 |
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Create Web services for real-time scoring using DB2 Warehouse V9.5
Build real-time scoring analytical Web services with DB2 Warehouse
V9.5 Design Studio. Compute cross-sell recommendations using
association models or compute risk scores using prediction
models in real-time to drive operational business decisions.
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06 Dec 2007 |
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XML application migration from DB2 8.x to DB2 Viper, Part 2: Compare XML functionality in DB2 Viper to XML functionality in DB2 V8.x
Look at the XML functionality in DB2 Viper and compare it to that of DB2 V8.x. This article discusses the new XML features introduced in DB2 Viper, and goes into the details regarding the impact the new XML support has on migrating existing XML-based applications. This is the second of a three-article series on migrating your XML applications from DB2 UDB V8.x to DB2 Viper.
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24 May 2006 |
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XML application migration from DB2 8.x to DB2 Viper, Part 1: Partial updates to XML documents in DB2 Viper
The first of a three-article series on migrating your XML applications from DB2 UDB V8.x to DB2 Viper, this article describes a method for performing partial updates to XML documents stored natively in DB2 Viper, using a stored procedure that's included as a download.
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11 May 2006 |
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Access WebSphere Process Server V6.0 business processes with PHP
This article shows how to access Business Process Execution Language (BPEL) based applications running in IBM WebSphere Process Server Version 6.0 from a PHP Hypertext Preprocessor (PHP) Server.
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15 Feb 2006 |
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Using WebSphere Developer for zSeries V6 to Create a CICS Web
service in CICS Transaction Server for z/OS V3.1
CICS Transaction Server for z/OS V3.1 provides comprehensive support for Web services, enabling CICS applications to act as either service providers or service requesters. WebSphere Developer for zSeries V6 automates the transformation of existing CICS COBOL applications so that these can act as service providers.
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23 Nov 2005 |
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Using SOAP with attachments in WebSphere Enterprise Service Bus 6.2.0.1
An important feature in WESB 6.2.0.1 is the SOAP with Attachments enablement.
This article will discuss how to add/use/remove SOAP attachments in a mediation flow
component to send/receive the attachments with SOAP messages.
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05 Aug 2009 |
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Modeling demystified, Part 3: Extend UML for user models
This series provides basic information on how to build user models. In this
third article, learn about the stereotypes and relationships used to extend Unified
Modeling Language (UML) for user models. A user model is a description of a set of
people and how they will work with an IT solution.
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25 Mar 2008 |
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Modeling demystified, Part 1: Creating a system specification from the user's point of view
With this series, learn
how to build a user model, which is a description of a set of people and how
they will work with an IT solution. In this introductory article in
the series, get an introduction to Unified Modeling Language (UML) modeling and find out how to create a specification of a system from the user’s point of view.
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19 Feb 2008 |
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Modeling demystified, Part 2: Building a user model
A user model is a description of a set of people and how they will work with
an IT solution. This type of modeling, which is based on leading usability theory and
practice, lets solution architects specify the externals of the IT
solution so that it's both useful and usable to all types of users. In this article, learn
how to build a user model of a simple component that supports secure access
to Web resources. See how a user model can identify possible gaps in your requirements definitions.
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04 Mar 2008 |
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Understanding WSDL in a UDDI registry, Part 3
In the first two parts of this series, Peter described how to map WSDL service descriptions to a UDDI registry and provided specific WSDL usage scenarios. In the conclusion, you will learn how to develop two Java applications which publish WSDL service descriptions in a UDDI registry. One application will be used to publish WSDL service interface descriptions, the other to publish WSDL service implementation descriptions.
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Articles |
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01 Nov 2001 |
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Social Networks using Web 2.0
In this article we highlight the pattern and behavior of different social
networks and how they are implemented using Web 2.0. We have also indicated
how behavior of individuals and their network can be extracted and analyzed by
studying different social networks. Towards the end of this article we highlight the
future of Web 2.0 and how its enhanced capabilities can make social networks more
mature with added features and functionalities to improve the efficiency of social collaboration.
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23 Nov 2009 |
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Offload WebSphere Web services Security tasks to IBM WebSphere DataPower
SOA Appliance: Part 4: Are you ready for a Secure Conversation?
In this article we expand on the previous scenario by deploying the WebSphere DataPower SOA Appliance in a WS-Secure conversation scenario. WebSphere DataPower SOA Appliance will process the WS-Security portion for the application server after it established a secure context according the WS-Security Policy.
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13 Jul 2009 |
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Squeezing SOAP
GZIP encoding over HTTP is pretty much old school. "Been there, done that" is the attitude of most. However, if you have been working with a few of the current SOAP implementations, you'll find that they don't take advantage of it. While knowing they will eventually come around, if you are building real world Web service solutions and want a performance boost, GZIP is for you.
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01 Mar 2003 |
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Preview of the WS-I sample application
Recently, WS-I, the Web Services Interoperability Organization, released public Working Group Drafts of the WS-I Sample Application Use Case and Architecture documents, showing the progress WS-I is making in developing its first major deliverable, the WS-I Basic Profile. This article provides a preview of the WS-I sample application.
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01 Mar 2003 |
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Discover SOAP encoding's impact on Web service performance
Software developers have many choices for building Web service systems. In a recent investigation, Frank Cohen discovered that a choice of SOAP encoding style in particular immediately affects system scalability and reliability. In this article, he describes the different encoding choices and shows the performance and reliability tradeoffs that come with each. He also delivers tools that you can use to stage tests in your own environment.
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01 Mar 2003 |
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Distribute a rich user experience using Web services and a balanced computing model
With the advent of the Internet and universal connectivity, developers and administrators established the server/browser model of distributed computing. This model eased installation and maintenance headaches -- but reduced the user experience to the lowest common denominator and left most client computers hopelessly overpowered for the tasks set to them. In this article, Umesh J. Shah outlines the concept of a balanced computing architecture. He envisions a computing world that takes advantage of server-side computing while still delivering a rich user experience on those machines capable of supporting it.
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07 Mar 2003 |
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Business Process with BPEL4WS: Learning BPEL4WS, Part 5
The previous example in Part 2 of this series showed how to build a simple BPEL4WS process that invokes a web service. This article takes that example and expands it into the loan approval process that is included in the BPEL4WS specification and the BPWS4J samples. Links connect activities together, and allow the specification of a condition on each that determines whether or not that link should be followed. Conditions in BPEL4WS are XPath expressions, and this article shows how they can incorporate the process's container data.
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11 Mar 2003 |
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Business processes and workflow in the Web services world
In the beginning, there was work to do. Think of the caveperson who made the first wheel. That first wheel was a creation, an invention, a reason to celebrate. The making of the second, third, fourth, fifth, etc. wheels was just work. From those cave-dwelling days, through the time when Henry Ford started producing his Ford automobiles on the assembly line, to today, we've been thinking of ways to get work done better, faster, more reliably, and for less money. Business processes are a great method for accomplishing these goals. This article looks at business processes, their relationship to workflow and Web services today, and the challenges that lie ahead.
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01 Jan 2003 |
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First look at the WS-I Usage Scenarios
On January 16, 2003, the Web Services Interoperability Organization released its first public Working Group Draft of the WS-I Usage Scenarios document that defines the technical requirements for using Web services in a profile-conformant manner. This publication represents another important milestone for WS-I, following the release of the first public Working Group Draft of the WS-I Basic Profile version 1.0 specification, which was described in Chris Ferris' excellent article, A First look at the WS-I Basic Profile 1.0. This article summarizes the details of the Scenarios document for the benefit for developers.
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01 Jan 2003 |
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Best practices for Web services: Part 5, Custom Extended Enterprise Exposed Business Services Application Pattern Scenario
Continuing our focus on best practices for Web services, we discuss a customer's need to provide a multi-channel solution that leverages an existing legacy application. When designing this infrastructure solution, the customer indicated a desire that the resulting solution be based upon open standards and would support multiple business channels. In this article, as in prior column installments, we apply the new Web services vernacular introduced in Part 1 and the IBM Patterns for e-business discussed in Part 2 to this real-world business scenario with the goal of helping IT executives and architects better understand the role and appropriate use of Web services.
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01 Jan 2003 |
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Ask the magic eight ball
You have no doubt seen plenty of articles on Web services technologies, covering everything from the basics of the Simple Object Access Protocol (SOAP) to more advanced topics like the Web Services Invocation Framework (WSIF) and Web services registries. At developerWorks, we have received several requests for an article that puts everything in perspective; that is what we will do here. In this article, Doug Tidwell takes a simple piece of code, deploys it as a Web service, and writes a few clients for it. Next, he discusses how to create a description of the Web service and how to store that description in a registry and on a Web server. Finally, he looks at two different ways of discovering and invoking a Web service. When you are finished with this article, you should have a better understanding of how all of these technologies work together.
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01 Jan 2003 |
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Web services interoperability, Part 1
In this article, Andre Tost shows how a purchase order business process can be implemented across many different Web services environments. An example application defines different roles that play a part in the process of a purchase order, where each role can be played by a different vendor's implementation. Andre will describe what the application does, and how the individual parts of the application work together. He will also show you how you can access and run the IBM part of the application from your Web browser and link you to a demo with the source code. A follow-up article will provide you with a description of how you can run this application on your own WebSphere Application Server installation, as well as debug it with the WebSphere Studio Application Developer tool.
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01 Jan 2003 |
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Human-facing Web services, Part 3: Build portals with WSRP
In the first two articles in this series, Judith Myerson examined business users' collective viewpoints on how Web pages and remote portals should be presented, and looked at how the WSIA specifications can be used to build human-facing applications. In this third installment, you'll learn how you can use Web Services for Remote Portals (WSRP) to extend the functionalities of the WSXL component services. You'll see sample code that demonstrates how to aggregate interactive applications into a single portal using one standard adapter for different interfaces and protocols.
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01 Jan 2003 |
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Configure Web Services Security with WebSphere: Part 1, HTTPS, .NET, and UsernameToken
In Part 1 of this two-part tutorial, you'll learn how to use IBM WebSphere Studio Application Developer V5.1.2 (hereafter called Application Developer) to secure a Web service using transport-level security (HTTPS), and how to access it from Java 2 Extended Edition, Java 2 Standard Edition and .Net clients. We'll then add a UsernameToken, digital signatures and encryption in a Web services security header and invoke them from a J2EE client.
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13 Apr 2005 |
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Explore the Web Services Bus, Part 2: Comparing Bus filters and Axis handlers
What does the Web Services Bus offer when compared to other Web services frameworks? Well, for one thing, its Web Services Invocation Framework (WSIF) heritage means that it always operates on a canonical form of data, not a SOAP-specific form. In this second article in a two-part series, Greg Flurry takes you step by step through a simple example Web service to show you how the Web Services Bus stacks up against the SOAP-based Apache Axis. But not every decision is either/or; this article will also give you a good look at the ease at which these two frameworks can interoperate.
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01 Jan 2003 |
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A developer's introduction to JAX-RPC, Part 2: Mine the JAX-RPC specification to improve Web service interoperability
In the first article in this series, Joshy Joseph discussed a key aspect of the JAX-RPC standard: its type mapping system. Now that you understand how JAX-RPC maps XML types to Java types, you're ready to explore this specification in earnest, including its exception handling facilities and potential run-time services. When you've finished this article, you'll be ready to start building Java-based interoperable Web services.
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01 Jan 2003 |
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Consuming an external Web service with Domino 6
Using the SOAPConnect for LotusScript package, developers can create Domino applications that can consume an external Web service and return the resulting data. This package, coupled with the Domino Designer tools, provides an easy-to-use mechanism that can be integrated into new and existing Domino 5 or 6 applications without the need for Java programming or the requirement of an external application server.
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14 Feb 2003 |
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Web services interoperability, Part 2
In Part 1 of this series, Andre Tost presented a demo application that was implemented across several vendors' Web services environments and highlighted one very important aspect of Web services technology: interoperability. In this article, he will show you how you can download a version of the application for IBM WebSphere and run it on your own local computer. The application runs both in connected and non-connected modes, meaning that you can interact with other service implementations that exist on the Internet, or you can run all of the services locally. He will also show you how you can import the application into the IBM WebSphere Studio Application Developer and run and debug it from within the tool.
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01 Jan 2003 |
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Dynamic service binding with WebSphere Process Choreographer
This article explains how to bind Web services to Business Process Execution Language (BPEL) business processes in IBM WebSphere Business Integration Server Foundation, and how to dynamically change those bindings.
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02 Jul 2004 |
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Web services programming tips and tricks: Reference guide for creating BPEL4WS documents
This is quick reference guide for creating BPEL4WS documents, providing a short description for each kind of BPEL4WS element -- the associated properties, related elements, etc. It has been designed for users of the BPWS4J editor, but is useful for anybody who is trying to create BPEL4WS documents and isn't completely familiar with the language.
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22 Nov 2002 |
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Best practices for Web services: Part 3
In the first two installments of this column, we laid a semantic and organizational foundation upon which we could begin to analyze real-world business applications within which Web services play a key role. In this installment, we apply our new Web services vernacular introduced in Part 1 and the IBM patterns for e-business discussed in Part 2 to an actual business scenario in the financial services industry requiring application integration. You'll see how Web services can help bridge gaps between organizations within an enterprise with very different IT philosophies.
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01 Nov 2002 |
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Best practices for Web services: Part 2
In the previous article in this series, Back to the basics, Part 1: Formation of a semantic framework,we launched an effort to help bring clarity to the area of Web service-oriented design by laying out a refined definition and classification scheme for the various types of Web services and Web service-like applications developers can build. Here, we continue that discussion by moving beyond our vernacular to discuss how existing best practice e-business architectural and implementation patterns are affected by the application of Web service technologies. With this knowledge in hand, you'll be ready when our series moves on to real-world case studies.
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01 Nov 2002 |
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Developer's introduction to JAX-RPC, Part 1: Learn the ins and outs of the JAX-RPC type-mapping system
The Java APIs for XML-Based Remote Procedure Call (JAX-RPC) are an important step forward in the quest for Web services interoperability. In this first of two articles, Joshy Joseph takes you to the heart of that interoperability effort: the JAX-RPC type-mapping system. You'll learn how XML types are translated into Java types to ensure a smooth exchange of data between Web service clients and Java-based applications.
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01 Nov 2002 |
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The Python Web services developer: RSS for Python
RSS is one of the most successful XML services ever. Despite its chaotic roots, it has become the community standard for exchanging content information across Web sites. Python is an excellent tool for RSS processing, and Mike Olson and Uche Ogbuji introduce a couple of modules available for this purpose.
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13 Nov 2002 |
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Get ahead with Java Web services
Java developers who are interested in getting started with Web services should check out the Java Web Services Developers Pack (WSDP). In this article, James McCarthy takes you on a quick tour of this package. You'll learn what the tools in this package can do for you, and find out which components are just for testing and which are ready for production use as-is.
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01 Nov 2002 |
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Web Services Security: Moving up the stack
The Web Services Security model is shaping up quite significantly. A new series of specifications explain how Web services security can be implemented in a platform-independent and loosely-coupled manner in terms of establishing secured communications, defining policies for how services interact, and defining rules of trust between domains of services.
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01 Dec 2002 |
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Accelerate your Web services with caching
After integrating and building applications that leverage and exploit Web services over the last few years, you may have heard many times that you cannot have simplicity without sacrificing efficiency. That said, this article looks at how you can speed up the things you can control and accept that technology eventually will catch up. This article covers the basics for rolling your own caching object. It reviews when and where to use caching and looks at some real-world scenarios to demonstrate the power of adding a cache to Web services. The next time someone mentions Web services as being a slowpoke solution, take a stand and cache.
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01 Dec 2002 |
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Best practices for Web services: Part 4, A Managed Public and Private Process Application Pattern Scenario
We apply the new Web services vernacular introduced in Part 1 and the IBM Patterns for e-business discussed in Part 2 to this real world business scenario with the goal of helping IT executives and architects better understand the role and appropriate use of Web services.
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01 Dec 2002 |
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Finding your way through Web service standards, Part 3: More WSDL and best practices
The interaction between SOAP, WSDL, XML Schema, HTTP, etc. can become very complicated and standards were not written such that a simple acronym on the product box will ensure or even suggest compatibility. In this article, Jordi Albornoz will further explain the issues in WSDL and suggest ways to improve the current state of Web service interoperability.
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01 Dec 2002 |
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Explore the Web Services Bus, Part 1
If you've downloaded version 3.2.2 of the Web Services Toolkit from IBM alphaWorks, you already have the Web Services Bus, a framework for constructing Web services processors. In this two-part series, Greg Flurry shows you how to get started using the Bus to get your Web services into production faster and more easily. In this first installment, you'll learn about the Bus's UDDI-based discovery mechanism, and examine an experimental practice that will help automate the process of publishing Web services.
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01 Nov 2002 |
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Rocket ahead with UDDI V3
If you are familiar with Web services, you probably recognize the importance of Universal Description, Discovery, and Integration (UDDI) and the role it plays as a Web services registry. Having a general solution for describing Web services so that you can quickly and easily discover these services is fundamental to the success of heterogeneous Web service environments. This article focuses on support for multi-registry heterogeneous environments, security, and the separation of policy from implementation, which are the key features that strongly differentiate Version 3 from prior versions.
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01 Nov 2002 |
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Business Process with BPEL4WS: Learning BPEL4WS, Part 3
The recently released Business Process Execution Language for Web Services (BPEL4WS) specification is positioned to become the Web services standard for composition. This series of articles aims to give readers an understanding of the different components of the language, and teach them how to create their own complete processes. The previous parts of the series gave an overview of the language, and took readers through creating their first simple process. This part will cover each of the activities in more detail. We will also cover how the various BPEL4WS constructs may be represented and manipulated in memory.
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01 Oct 2002 |
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Conversational Support for Web Services: The next stage of Web services abstraction
A new series of Web services protocols -- BPEL4WS, WS-Coordination, and WS-Transaction -- aim to abstract groups of services into easy-to-handle processes. While most developers are just starting to use these technologies, Santhosh Kumaran and Prabir Nandi, two researchers at IBM's T.J. Watson Research Center, are already studying how to take Web services to the next level of abstraction. In this article, you'll learn about Conversation Support for Web Services (CS-WS), an experimental technology from IBM's alphaWorks. You'll learn how conversations can hide the implementation details involved with collecting multiple Web services into real-life business exchanges. Once you finish here, you can download the project's code from alphaWorks and get in on the ground floor of development.
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01 Sep 2002 |
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Best practices for Web services: Part 1, Back to the basics
As the hype around Web services ebbs and the technology enters the disillusionment phase of the adoption life-cycle, business entities are now demanding best practices to aid them in their technology adoption efforts. This article begins a series that will address the building blocks of Web services, applicable business scenarios, and best practice methods for embracing Web services by business and IT professionals. Our first task is to go back to basics to lay out a vernacular that will provide clarity to our discussions.
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01 Oct 2002 |
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Developing Web services, Part 3: SOAP interoperability
In this article, Bilal will start with a discussion of the evolution of SOAP, present a list of major SOAP interoperability issues and their details, and create a guideline to develop better interoperable Web services. Bilal will also cover the details of using datatypes in SOAP.
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01 Sep 2002 |
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Business Process with BPEL4WS: Learning BPEL4WS, Part 4
Learn how to create processes with the BPWS4J Visual Editor
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01 Nov 2002 |
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Integrate enterprise applications with Web services and J2EE
For some time now, IT staffers have been able to use elements of the Java 2 Platform, Enterprise Edition (J2EE) to integrate back-end systems. The recent emergence of Web services technologies has opened up new and previously unimagined ways to achieve similar ends. In this article, Andre Tost and Daniela Rudrof offer a vision of how J2EE and Web services can work together to ease enterprise application integration (EAI). You'll see how the Java Messaging Service and the Java 2 Connector Architecture can be used in tandem with Web services technologies to bring the integration process to a new level of abstraction.
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01 Nov 2002 |
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Human-facing Web services, Part 2: Building applications
In the first article in this series, Judith examined business users' collective viewpoints on how Web pages and remote portals should be presented, and briefly discussed the goals of the Web Services for Interactive Applications (WSIA) Technical Committee. In this article, she focuses on how the WSIA specifications are used to build human-facing applications. You'll learn about different methods you can use to control logical flows within large applications built out of many Web services components -- all with the goal of making your users' experiences as smooth as possible.
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01 Oct 2002 |
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Dynamic Discovery and Invocation of Web services
In order to take full advantage of the flexibility and power of Web services, the user must be able to dynamically discover and invoke a Web service implementation. This is the ultimate promise of Web services and the original reason why technologies like UDDI were developed. It has even been proposed that businesses could provide publicly-accessible implementations of Web services, which any Joe or Jane could use for buying discount gummy bears, or more practical things, such as insurance. Although, this idea is not yet ready for prime time, there is still use for such dynamic invocation behind the firewall. In this article, Damian Hagge demonstrates how a Web services client can dynamically discover and invoke a Web service without any prior knowledge of its makeup.
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01 Aug 2001 |
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Finding your way through Web service standards, Part 2: More intricacies of SOAP and WSDL
In the previous article, Jordi explained how each of the Web services standards are designed to be extremely general in the interest of extensibility. Yet each standard only solves a very specific problem in creating a distributed computing framework. Thus, knowing that a product supports SOAP is not enough to know that another product making a similar claim will interoperate. SOAP is at its root merely a message format. In this article, Jordi explains how data encodings relate to SOAP and other standards.
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01 Oct 2002 |
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SOA programming model for implementing Web services, Part 1: Introduction to the IBM SOA programming model
The IBM(R) programming model for Service-Oriented Architecture (SOA) enables non-programmers to create and reuse IT assets without mastering IT skills. The model includes component types, wiring, templates, application adapters, uniform data representation, and an Enterprise Service Bus (ESB). This is the first in a series of articles about the IBM SOA programming model and what is required to select, develop, deploy, and recommend programming model elements. The content presented here takes into account that developers come to this model with different skill levels and roles.
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14 Jun 2005 |
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First look at the WS-I Basic Profile 1.0
The Web Services Basic Profile 1.0 released by the Web Services Interoperability group represents an important milestone for the technology as a published description of what standards and technologies will be required for interoperability between Web services implementations on different software and operating system platforms.
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01 Oct 2002 |
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Asynchronous operations and Web services, Part 3: Add business semantics to Web services
In previous installments of this series, Holt Adams explained the relevance of asynchronous operations for Web services and saw some patterns for building asynchronous services. Now he tackles three new specifications -- Business Process Execution Language for Web Services, Web Services Coordination, and Web Services Transaction -- and explains how they open up a world of possibilities for Web services developers. You'll see how these three specifications can support asynchronous operations and create an operational programming environment that mirrors real-life business interactions.
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01 Oct 2002 |
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Finding your way through Web service standards, Part 1: Will my Web service work with your client?
This series will guide you through the prevailing Web services standards describing their specific use and explaining what it really means to support each one, how they interact, and most importantly, where compatibility problems are likely to occur. The articles will also discuss the relevant changes to come as many of these standards are being revised. In this first article in the series, Jordi Albornoz will introduce the issue of complex interaction of standards and describe some of the issues around SOAP.
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01 Oct 2002 |
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Web services programming tips and tricks: Planning an iteration
As your project progresses you need to plan in detail the activities of your upcoming iterations. Detailed planning several months or even years in advance is of little value in today's changing environment, although you can successfully plan in detail your efforts for the next several weeks (the length of a typical iteration).
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28 Dec 2000 |
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Web services programming tips and tricks: Strategies for requirements-based planning
Effective project plans are based on the requirements for your project. This article compares and contrasts three fundamental approaches for doing so.
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21 Dec 2000 |
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Business Process with BPEL4WS: Learning BPEL4WS, Part 2
The recently released Business Process Execution Language for Web Services(BPEL4WS) specification is positioned to become the Web services standard for composition. It allows you to create complex processes by creating and wiring together different activities that can, for example, perform Web services invocations, manipulate data, throw faults, or terminate a process. These activities may be nested within structured activities that define how they may be run, such as in sequence, or in parallel, or depending on certain conditions. This series of articles aims to give readers an understanding of the different components of the language, and teach them how to create their own complete processes.
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01 Aug 2002 |
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Business Process with BPEL4WS: Understanding BPEL4WS, Part 1
The recently released Business Process Execution Language for Web Services (BPEL4WS) specification is positioned to become the Web services standard for composition. It allows you to create complex processes by creating and wiring together different activities that can, for example, perform Web services invocations, manipulate data, throw faults, or terminate a process. These activities may be nested within structured activities that define how they may be run, such as in sequence, or in parallel, or depending on certain conditions. This series of articles aims to give readers an understanding of the different components of the language, and teach them how to create their own complete processes.
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01 Aug 2002 |
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Build error-proof Web services
A well-designed system should always have a powerful mechanism for handling error conditions. Web service messages, commonly implemented as Simple Object Access Protocol (SOAP) messages over the Hypertext Transfer Protocol (HTTP), use SOAP's fault mechanism to encode server-side error conditions to the Web service client. This article will introduce the SOAP fault mechanism and explain how version 2.2 of the Apache SOAP toolkit encodes server-side exceptions into a SOAP fault.
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01 Aug 2002 |
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The Python Web services developer: XML-RPC for Python
XML-RPC is a simple, lightweight Web services technology that predates SOAP. In this installment of the Python Web services developer, Mike Olson and Uche Ogbuji examine the XML-RPC facilities in Python.
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19 Sep 2002 |
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Use SOAP-based intermediaries to build chains of Web service functionality
An intermediary is an entity that sits between a client and a service provider and supplies additional services to the client. In this article, Anbazhagan Mani and Arun Nagarajan provide an introduction to SOAP intermediaries for Web services. You'll learn what sorts of services intermediaries can provide in a Web services environment, and take an in-depth look at how information about intermediaries is stored in SOAP headers. You'll also look at several potential pitfalls still latent in this technology that developers need to overcome in order to speed widespread adoption.
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01 Sep 2002 |
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Human-facing Web services, Part 1: An introduction to Web Services Experience Language
As Web services move further into the mainstream, business users are starting to make their voices heard on their future directions. One venue for this discussion is the Organization for the Advancement of Structured Information Standards (OASIS), a not-for-profit group that is driving the adoption of the Web Services Experience Language (WSXL) specification. In this article, Judith M. Myerson explains how WSXL will aid the development of Web services that better serve user needs. Through the WSXL component model, developers will be able to adapt Web services on the fly and create new aggregate portals to provide users with the functionality they need, when they need it.
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01 Sep 2002 |
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Web services programming tips and tricks: Ease service discovery with WSIL4J
Before you can make use of Web services on the network, you have to discover them and get information about them. Web Services Inspection Language (WSIL) eases this process somewhat. In this article, Alfredo da Silva presents a Java API that makes it even simpler. You'll take a look at code that processes WSIL documents and presents the information they contain in an easy-to-read tabular format. Once you've mastered this API, you'll be able to unleash its power in your own applications.
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06 Sep 2002 |
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The Web services (r)evolution: Part 2
This article provides a step by step explanation of how to develop a Web service, including what tools you will need, how to install them, how to write the code, and how to deploy the service. It goes on to explain how to invoke other Web services from across the Internet.
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01 Dec 2000 |
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The Advertisement and Discovery of Services (ADS) protocol for Web services
As you build more Web Services into your computing infrastructure, it may become a complex issue for your B2B partners to locate specific services. How do you advertise that a particular service is on a particular system? How do you announce to search engines the kind of information that you present on your site? The authors here present a new protocol that makes it easy to proactively announce Web Service information to visiting software agents of your B2B partners.
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01 Oct 2000 |
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The Tao of e-business services
The concept of Web services is the beginning of a new service-oriented architecture in building better software applications. The change from an object-oriented system to a service-oriented one is an evolutionary idea that sublimated from the global Internet and Web system. To understand how to build Web Services into your computing architecture, you need to carefully understand the role they play. This article details the software engineering concepts behind the Web Services architecture, how it has evolved, how it is structured, and how it can be brought into your existing computing infrastructure
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01 Oct 2000 |
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Web services programming tips and tricks: Prioritize your system's requirements
Successful project teams recognize that not all requirements are created equal and, therefore, they need to prioritize them and act accordingly.
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07 Dec 2000 |
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The Web services (r)evolution: Part 1
This opening article of our new column focuses on the benefits and challenges of building Web service applications. Web services may be an evolutionary step in designing distributed applications, however, they are not without their problems. Graham outlines the difficulties developers face in creating a truly workable distributed system of Web services. This article also outlines his plan for building peer-to-peer Web applications over the coming issues of this column.
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01 Nov 2000 |
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WSDL processing with XSLT
Building on earlier articles introducing Web Services Description Language (WSDL) and an RDF application based on WSDL, this article shows ways of using Extensible Stylesheet Language for Transforms (XSLT) to process WSDL in various ways. Familiarity with XSLT and Resource Description Framework (RDF) are required. Resources introducing XSLT are provided.
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01 Nov 2000 |
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Web services programming tips and tricks: Applying packages on UML diagrams
Read these tips on using packages to simplify and organize your UML software diagrams. This article was modified from Chapters 3 and 6 of The Object Primer 2nd Edition.
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30 Nov 2000 |
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Web services programming tips and tricks: Drawing clean UML diagrams
Like it or not, software diagrams such as Unified Modeling Language (UML) class models and use case models, are often judged on their looks. Diagrams that look clean are more readily accepted by their audience -- often your users and senior managers -- than diagrams that look messy. This tip is derived from Chapter 3 of Building Object Applications That Work.
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27 Nov 2000 |
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Web services programming tips and tricks: Legacy integration techniques for Java applications
You can easily integrate your Java, J2EE, and EJB-based applications with existing legacy systems following one or more of the four common integration strategies described here.
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16 Nov 2000 |
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Web services programming tips and tricks: Is Enterprise JavaBeans (EJB) technology for you?
Although EJB technology is one of the leading platforms, along with DCOM and CORBA, for the development of mission-critical applications, it isn't the best fit for every project. This tip describes the factors that you want to consider when determining whether EJB technology is the right option for you.
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09 Nov 2000 |
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Supercharging WSDL with RDF
The Resource Description Framework is the World Wide Web Consortium's official format for defining the metadata of XML objects. Conceptually, it is similar to Web Services Description Language, which is a collection of metadata about XML-based services. This article focuses on building a bridge between the two specifications. It provides an example of what a Web service description might look like as an RDF file. It then goes on to discuss how to take advantage of an RDF visualization tool to generate a graph of the WSDL data. Finally, it presents a portion of a possible RDF Schema for WSDL.
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01 Nov 2000 |
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Web services programming tips and tricks: How to organize a software development team
How you build a software development team depends on the people that you have available to you, the needs of your project, and the needs of your organization. This article explains various team organization strategies.
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02 Nov 2000 |
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Using WSDL in SOAP applications
Web Services Description Language (WSDL) is a new specification to describe networked XML-based services. It provides a simple way for service providers to describe the basic format of requests to their systems regardless of the underlying protocol (such as Simple Object Access Protocol or XML) or encoding (such as Multipurpose Internet Messaging Extensions). WSDL is a key part of the effort of the Universal Description, Discovery and Integration (UDDI) initiative to provide directories and descriptions of such on-line services for electronic business. This article provides a brief background and technical introduction to WSDL. Knowledge of XML and XML Namespaces is required and some familiarity with XML Schemas and SOAP is useful.
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01 Nov 2000 |
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Web services programming tips and tricks: User interface prototyping: Tips and techniques
Try these tips when developing a prototype UI. This list is modified from Chapter 8 of The Object Primer 2nd Edition.
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10 Aug 2000 |
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Under the hood: IORs, GIOP and IIOP
In July we created a simple example -- SimpleCalc. There was not much to it; a single method add() that took two IDL longs and returned a long. One of the problems with teaching and learning CORBA is that it gets complex right from the start, given that it's based on a distribution of clients and servers. Immediately we have to deal with the network. So, lets deal with the network right now.
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01 Aug 2000 |
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Web services programming tips and tricks: Identifying actors in use-case models
Building on his recent tip on developing essential use-case models, Scott Ambler offers insight on identifying actors in use-case models.
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28 Jul 2000 |
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Web services programming tips and tricks: Modeling essential use cases
Essential modeling is a fundamental aspect of usage-centered designs. This week Scott Ambler presents some background and suggestions for developing essential use case models.
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20 Jul 2000 |
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Web services programming tips and tricks: Documenting a use case
Scott Ambler explains the difference between an essential use case and a system use case, and offers suggestions on how to document either (with a focus on the latter).
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05 Oct 2000 |
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Getting started with objects with PHP V5
This article describes the fundamentals of objects and classes in PHP V5, from the very basics through to inheritance, for experienced object-oriented programmers and those who have not yet been introduced to objects.
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17 May 2005 |
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