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  You are here: home ĽĽ Info Bank » IBM developerWorks Resources Tuesday, 18 September 2007
 
IBM developerWorks Resources
This section lists the "perfectxml.com editor's choice" resources on IBM developerWorks External link Web site.

Collapse/Expand Web Services

  • Web Services architecture overview
    This article presents an overview of IBM Web Services architecture, including what Web Services are, the fundamental characteristics of a Web Services architecture and the benefits of this approach.
    Read online  Download as a PDF file


  • Web services architect, Part 1: An introduction to dynamic e-business
    Emerging technologies have played a strong role in the evolution of the Internet over the past five years. Java gave us portable code; portable data came with XML; and Pervasive Computing addressed the connectivity of any device. Now the hype surrounds Web services. In this series of articles, I will discuss the importance of this technology in developing the next generation of the Internet as well as describe the Web services strategy of IBM. Additionally, I will explore the business impact of Web services, how to identify a relevant solution opportunity, and how to evaluate the many vendor strategies building around this technology.
    Read online  Download as a PDF file


  • Web services insider, Part 1: Reflections on SOAP
    What is the current state of the "Web services revolution?" In this, the first installment of my new column titled "Web services insider," Iíll answer this question by reviewing the tools and technologies that have emerged over the past year, highlighting their differences and similarities.
    Read online  Download as a PDF file


  • Web Services Description Language (WSDL) 1.0
    WSDL is an XML format for describing network services as a set of endpoints operating on messages containing either document-oriented or procedure-oriented information. The operations and messages are described abstractly, and then bound to a concrete network protocol and message format to define an endpoint. Related concrete endpoints are combined into abstract endpoints (services). WSDL is extensible to allow description of endpoints and their messages regardless of what message formats or network protocols are used to communicate, however, the only bindings described in this document describe how to use WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.

    This draft represents the current thinking with regard to descriptions of services within Ariba, IBM and Microsoft. It consolidates concepts found in NASSL, SCL, and SDL (earlier proposals in this space).
    Read online  Download as a PDF file


  • Programming XML and Web services in TCL, Part 1: An initial primer
    Tcl and XML make good partners. Tcl boasts several strengths for standalone XML processing. Moreover, in this article XML is presented as the initial building block in a series that describes the capacity for Tcl in Web services work.

    Purely XML-based tools implement 85-90% or more of an application. Programming/Scripting languages -- whether it be Tcl, Perl, Python, whatever -- are important for some aspects of building applications -- more so for B2B apps -- but XSLT and XML Schemas are used increasingly for implementing the high-level logic -- business logic, configuration data, etc. Previously, this is where Tcl was used but it is moving down in the logic chain.
    Read online  Download as a PDF file


  • Creating a complete Web service
    Need to convert your JavaBeans to Web services? Follow Greg Flurry's step-by-step tutorial on how to get things done using the XML and Web Services Development Environment.

    The IBM Web Services Toolkit IBM Web Services Toolkit (WSTK) on alphaWorks allows you to begin experimenting with Web services. Fundamentally, the WSTK provides and environment for hosting Web services. A companion to the WSTK is the "aggregation demo," available with the WSTK on alphaWorks. The aggregation demo consists of a number of Web services, their associated visual components, and a simple portal in which to run the Web services.
    Read online


  • Using XML-RPC for Web services, Part 1: Getting started with XML-RPC in Perl
    Creating an XML-RPC Web service with Perl is almost as easy as CGI scripting. This article will bring you up to speed on what XML-RPC is and how to use Perl's Frontier::RPC library to create simple clients and servers.
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  • XML messaging with SOAP
    To help the developer avoid reinventing the wheel over and over, many interested parties have developed proposals for standardized XML messaging. The front runner in this race is Simple Object Access Protocol (SOAP), a specification for XML-based communications between objects. SOAP can be used with HTTP, and this tutorial shows how to use a SOAP library for relatively painless component communications.
    Read online


  • The Web services insider, Part 2: A summary of the W3C Web Services Workshop
    As the title suggests, the Web Services Workshop last week (April 11th and 12th) in San Jose, California was quite a grand gathering of some very intelligent minds, all focused on the future of this new emerging paradigm that we call "Web services." I happened to have the good fortune of not only serving on the program committee for the workshop -- thatís the group that reviews the submitted position papers and selects who gets to present at the workshop -- but also chairing one of the sessions. As this was my first official W3C event, it was definitely an eye-opening experience into how the W3C accomplishes what it does. In this installment of the "Web services insider," I want to share with you some of the highlights of the presentations and discussions that followed.
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  • The Web services (r)evolution, Part 1: Applying Web services to applications
    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.
    Read online  Download as a PDF file


  • The Web services (r)evolution, Part 2: Hello world, Web service-style
    The second installment focuses on the evolutionary and revolutionary aspects of Web services technology. In the first installment, I presented an overview of Web services and the problems that must be addressed in order for this technology to become mainstream. In this installment, Iíll teach you everything you need to know in order to build and deploy your first Web service. Iíll also show you how to invoke Web services that are already deployed on the Internet.
    Read online  Download as a PDF file


  • The Web services (r)evolution, Part 3: How SOAP works
    The third installment focuses on the evolutionary and revolutionary aspects of Web services technology. In the second installment, I showed how to build, deploy, and invoke a simple Web service using the Apache Simple Object Access Protocol (SOAP) implementation. In this installment, I'll explain how SOAP works under the hood, which is technically interesting and will help to demystify the future standards that we'll discuss like Web Services Description Language (WSDL) and Uniform Description, Discovery and Integration (UDDI) standard
    Read online  Download as a PDF file


  • The Web services (r)evolution, Part 4: Web Services Description Language (WSDL)
    The fourth installment focuses on the evolutionary and revolutionary aspects of Web services technology. In the third installment (see Resources), I showed you how Simple Object Access Protocol (SOAP) works under the hood. In this installment, I'll explain WSDL, the standard way to describe the core properties of a Web service, and introduce a couple of tools that leverage WSDL to accelerate your development process.
    Read online  Download as a PDF file


  • The Python Web services developer, Part 1: The world of Python Web services
    Python's motto has always been "batteries included," referring to the large array of standard libraries and facilities that come with the language installation. This article presents an overview and survey of tools and facilities available for Web services development in Python. This includes built-in Python features and third-party open-source tools.
    Read online  Download as a PDF file


  • The Python Web services developer, Part 2: Web services software repository, Part 1
    This is the beginning of a short series on creating a software repository system built on Web services and developed in the Python programming language. Mike Olson shows you the details of using the 4Suite open-source XML server with Python to create Web service-based applications.
    Read online  Download as a PDF file


  • TSpaces Services Suite
    TSpaces services suite is a development toolkit to assist the creation, discovery, and integration of Web services. The TSpaces Server Suite has a useful demo and set of tools for layering Web services on the Java-based distributed software communications system of TSpaces.
    Read online


  • Web services architect, Part 2: Models for dynamic e-business
    Every emerging technology has to cross the chasm between innovation and acceptance. The technology adoption life cycle for Web services is no different. However, this technology does pertain to a different target audience of decision makers. Who are they? What will motivate them? Building on the vision of Dynamic e-business, this article explores the value proposition Web Service technologies offers to business entities in a variety of market segments.
    Read online  Download as a PDF file


  • Using XML-RPC for Web services, Part 2: XML-RPC Middleware
    Popular Web applications can often overwhelm the hardware resources that service them. By using Web services middleware, developers can create an application architecture that is divided into logical components connected through the middleware, making it easier to eliminate performance bottlenecks. This is done by simply adding better processing to the problem area. XML-RPC is a simple Web service protocol that takes the pain out of building middleware.
    Read online  Download as a PDF file


  • UDDI4J: Matchmaking for Web services: Interacting with a UDDI server
    As part of its continued commitment to Web services, IBM has released UDDI4J, an open-source Java implementation of the Universal Discovery, Description, and Integration protocol (UDDI). In this article, we'll discuss the basics of UDDI, the Java API to UDDI, and how you can use this technology to start building, testing, and deploying your own Web services.
    Read online  Download as a PDF file


  • Applying Web services to the application service provider environment: An example of Web services applied to e-business
    The concept of Web services is creating a lot of excitement, but it is also creating a lot of questions about how to apply Web services to e-business. This article offers a brief introduction to the architectural principles underlying Web services, as well as some of the technologies that support them. This article primarily presents an example of how Web services can be applied to an application service provider environment.
    Read online  Download as a PDF file


  • Applying Web Services to the Application Service Provider Environment, Part 2: An Example of Web Services Applied to e-Business
    Part 2 of this article continues my introduction to the architectural principles underlying Web services, and to some of the technologies supporting it. It completes the example of how this technology can be applied to an application service provider environment.
    Read online  Download as a PDF file


  • WSDL processing with XSLT: First steps for Web service description processing
    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.
    Read online  Download as a PDF file


  • Supercharging WSDL with RDF: Managing structured Web service metadata
    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.
    Read online  Download as a PDF file


  • Using WSDL in SOAP applications: An introduction to WSDL for SOAP programmers
    Web Services Description Language (WDSL) 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.
    Read online  Download as a PDF file




Collapse/Expand XML and Java



Collapse/Expand Miscellaneous

  • Introduction to XML
    XML, the Extensible Markup Language, has been hailed as a technical revolution comparable in scope to sliced bread and the wheel. This tutorial by Doug Tidwell cuts through the hype to show you what XML is, and isn't, and how you can start using XML to transform your business.
    Read online


  • Part 2: Transforming XML into SVG
    The first section of our tutorial showed you how to transform XML documents into HTML. We used a variety of XML source documents (technical manuals, spreadsheet data, a business letter, etc.) and converted them into HTML. Along the way, we demonstrated the various things you can do with the XSLT and XPath standards. In this section, we'll use the World Wide Web Consortium's emerging Scalable Vector Graphics format (SVG) to convert a couple of our original documents into graphics.
    Read online


  • Part 1: Transforming XML into HTML
    Part 1 of this Transforming XML documents tutorial shows you how to transform XML documents into HTML.
    Read online


  • Part 3: Transforming XML into PDF
    Part 3 of this Transforming XML Documents tutorial shows you how to transform XML documents into high-quality, print-optimized documents.
    Read online


  • XML DOM & SAX poster, beta of 2nd edition: Preview this handy reference chart, find a bug first and win a book
    Download the PDF of the beta version of developerWorks' forthcoming DOM and SAX reference poster. The poster illustrates classes and methods of DOM and SAX level 2. If you're one of the first 15 people to report a bug, you'll earn a book on XML development from Wrox.
    Read online  Download as a PDF file


  • What kind of language is XSLT?: An analysis and overview
    What kind of a language is XSLT, what is it for, and why was it designed the way it is? These questions get many different answers, and beginners are often confused because the language is so different from anything they are used to. This article tries to put XSLT in context. Without trying to teach you to write XSLT style sheets, it explains where the language comes from, what it's good at, and why you should use it.
    Read online  Download as a PDF file


  • Saxon: The Anatomy of an XSLT processor: What is current state of the art in XSLT optimization?
    This article describes how an XSLT processor, in this case the author's open-source Saxon, actually works. Although several open-source XSLT implementations exist (see Resources), no one, as far as we know, has published a description of how they work. This article is intended to fill that gap. It describes the internal workings of Saxon, and shows how this processor addresses XSLT optimization. It also shows how much more work remains to be done. This article assumes that you already know what XSLT is and how it works. (If you need a refresher on the basics of XSLT, see Michael Kay's companion article that gives an overview of XSLT.)
    Read online  Download as a PDF file


  • The basics of using XML Schema to define elements: Get started using XML Schema instead of DTDs for defining the structure of XML documents
    The new XML Schema system, now nearing acceptance as a W3C recommendation, aims to provide a rich grammatical structure for XML documents that overcomes the limitations of the DTD (see the sidebar, Limitations of DTDs). This article demonstrates the flexibility of schemas and shows how to define the most fundamental building block of XML documents -- the element -- in the XML Schema system.
    Read online  Download as a PDF file


  • The XML Security Suite: Increasing the security of e-business
    As more and more companies use XML to transmit structured data across the Web, the security of documents becomes increasingly important. This article presents some basics of Web security, describes the components of the XML Security Suite, and gives examples that illustrate how the technologies in the XML Security Suite increase the security of Web commerce.
    Read online  Download as a PDF file


  • Tutorial: XML and scripting languages: Manipulating XML documents with Perl and other scripting languages
    In this first tutorial of his series on using scripting languages to manipulate and transform XML documents, Binary Evolution's Parand Tony Daruger takes you through the first steps of using these techniques with Perl. You'll see a method for transforming XML to HTML, followed by a simple stock trading application that uses Perl, XML, and a database to evaluate trading rules. You can apply the techniques using other scripting languages too, including Tcl and Python.
    Read online  Download as a PDF file


  • Lowering the bar of the DOM API: A few easy steps to begin accessing XML data in Java
    XML is a popular way to represent data in a portable, vendor-neutral, readable format. The Document Object Model (DOM) is an application programmer's interface to XML data. Unfortunately, the DOM is a fairly complex API with a high learning curve. But if you know the DTD of the data you are accessing, it's not too difficult. This article illustrates a few easy steps to begin accessing XML data using the DOM in Java.
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  • XML APIs for databases: Blend the power of XML and databases using custom SAX and DOM APIs
    Most Web applications require the presentation of database-generated information. XML, because of its ability to separate content from presentation, is fast becoming an industry standard for data exchange. Most XML tools work with either the SAX or DOM API. This article presents a way to blend the power of a database with the features of XML. It also provides a simple, pure Java implementation of XML APIs for databases that works with any JDBC data source. With this approach, XML tools can treat a database as a virtual XML document.
    Read online


  • Introduction to the Darwin Information Typing Architecture: Toward portable technical information
    The Darwin Information Typing Architecture (DITA) is an XML-based architecture for authoring, producing, and delivering technical information. This article introduces the architecture, which sets forth a set of design principles for creating information-typed modules at a topic level, and for using that content in delivery modes such as online help and product support portals on the Web. This article serves as a roadmap to the Darwin Information Typing Architecture: what it is and how it applies to technical documentation. The article links to representative source code.
    Read online  Download as a PDF file


  • Hands-on XSL: XSL for fun and diversion
    This article presents a simple, hands-on exercise that demonstrates the principles of the Extensible Stylesheet Language Transformations (XSLT). It takes about an hour to complete the concept exercises and about 15 minutes at a computer to try out the results with a real XSLT processor.
    Read online  Download as a PDF file


  • The Domino Application Server platform for XML
    As a technology, XML is only as powerful, useful, and usable as the server it runs on allows it to be. The Lotus Domino Application Server is well equipped to put this new technology into action. This paper defines XML, describes the ideal application platform for XML, and shows examples of how Domino and XML work together to solve real business problems.
    Read online  Download as a PDF file


  • Data interchange made easier with IBM Transcoding Technology: Updated beta synchronizes with WBI Developer Toolkit
    Transcoding systematically transforms information, making data interchange among disparate systems fast, easy, and predictable. IBM Transcoding Technology is server-side Java-based network software that dynamically filters, converts, or reformats data for transparent content sharing across systems, users, and emerging pervasive computing devices. Transcoding can reduce or eliminate the need to maintain multiple versions of data or applications for different device types, network service levels, or user categories.
    Read online  Download as a PDF file



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