A Dynamic e-Business Application using Web Services
Until a few years back large-scale enterprise application integration (EAI) used to be a complex task often a nightmare, while B2B integration was a distant dream. Web services, based on simple and open standards have now changed this perception. In view of its enormous potential in EAI and business integration/automation, web services is gaining widespread acceptance. This article describes the role of web services in B2Bi. It also describes a Proof of Concept application that demonstrates how a manufacturing company can automate its own business process systems by dynamically interacting with its customers and suppliers on diverse operating platforms.
Best practices for Web services: Part 10 - Other considerations that influence performance
With the introduction of Web services as an open standards integration technology for Enterprise Application Integration (EAI) and Business to Business (B2B) Integration, you can do many things to promote operational efficiencies and thus ensure the successful architecture and deployment of a solution. Continuing from the previous article on Web services-related performance issues, this article will explain other secondary issues that affect Web services performance based on real-world experiences and provide suggestions for how best to architect, develop, and deploy Web services-based solutions.
Build a marketplace with the eBay SDK and Web services
Get your own marketplace started with the help of the eBay SDK and Web services. Over forty percent of eBay's listings come through API calls. eBay now has Windows and Java SDKs to wrap those APIs, making it even easier for you to build custom applications to access the eBay marketplace.
Build interoperable Web services with JSR-109
Understanding the foundation of JSR-109. JSR-109 facilitates the
building of interoperable Web services in the Java 2 Platform,
Enterprise Edition (J2EE) environment. It standardizes the
deployment of Web services in a J2EE container. This article
discusses the server and client programming models defined by
JSR-109 and provides code examples.
Building Web Services w/ Eclipse Tutorial
This tutorial shows you how to build a Web service using the Eclipse Web Tools Platform. The Web service interacts with a Cloudscape (Apache Derby) database and is deployed to Apache Tomcat.
Create a portable Web service in multiple J2EE environments
This tutorial shows how to create a portable end-to-end Web service in multiple J2EE environments with the IBM WebSphere Studio Application Developer 5.1.1 Web Service wizard. The Web service client and server application code are generated with different runtimes and EARs. The Web service is deployed to a remote server.
Create REST Services with Java and Atom
In this tutorial learn the basics behind Representation State Transfer (REST) and the Atom Publishing Protocol (APP), and how they apply to services. Also learn to implement REST/APP-based services with Java technology, and enable access and modification of resource data for podcasts, blog entries, image storage, calendar entries, and so on.
Deploying Web Services on Java 2, Enterprise Edition (J2EE)
Since the first awkward attempts to define them when they were introduced in September 2000, Web services have gathered a great deal of momentum amongst developers -- so much, in fact, that JavaOne in March 2002 devoted an entire track of 63 sessions to the subject (see pointers to the session slides in For More Information). Accordingly, to coincide with a recent update to a key software package for developing Web services on Java 2, Sun has decided to update the basic instructions for deploying Web services on the JavaTM 2 Platform, Enterprise Edition (J2EETM).
Designing Mobile Web Services
From when to choose <a href=http://www.ibm.com/developerworks/wireless/library/wi-websvc/?ca=dgr-lnxw961MobileServices>mobile Web services</a> to the overall design guidelines to the value types to use in mobile Web services, this article addresses many of the design considerations you need to ponder when developing Web services for mobile devices. Learn how to decide when to use Web services, what things to consider when you design Web services, and what to keep in mind when planning mobile Web services.
Develop Asynchronous Web Services with Axis2
Asynchronous invocations provide a great deal of flexibility for Web services users and for the people who write and host Web services, ultimately helping provide a better overall user experience. This article gives you an overview of different patterns for asynchronous scenarios in Web services and provides insight into how to implement them with Apache Axis2.
Discovering Web Services
This article describes the Universal Description, Discovery, and Integration (UDDI) specification, which helps you find and learn about Web Services.
Getting REST and SOAP to Share Each Other's Toys
Convincing your colleagues and clients to consider a RESTful approach to SOA is difficult when the accepted standard is SOAP-style services. In this article, Jason R. Briggs introduces a SOAP interface that can be used to deliver SOAP messages from REST resources.
Implement and access stateful Web services using WebSphere Studio
Managing the life cycle of WS-Resources. The Web Services
Resource Framework proposes a model for accessing state using
Web services. The WS-Resource Lifetime specification defines
two ways of destroying a WS-Resource: immediate and scheduled
destruction. These processes allow designers flexibility as to
how their Web services applications can clean up resources that
are no longer needed. This article illustrates how the two
destruction mechanisms can be implemented in IBM® WebSphere®
Application Server environment using WebSphere Studio
Application Developer, Integration Edition 5.0.1.
Implement and deploy Web services in an Apache Geronimo application
The Apache Geronimo application server supports Web services along with other aspects of the latest Java 2 Platform, Enterprise Edition (J2EE) specification. This article describes how to use Web services facilities provided by the Apache Geronimo application server to build Web services-enabled J2EE applications. It demonstrates how the Geronimo application server relies on robust support for J2EE standards, providing a number of facilities for building both Web services and their clients.
Interoperability With Patterns and Strategies for Document-Based Web Services: Part 2 in a Series
In a previous article, we explored different patterns and strategies that can be used to build document-driven web services using J2EE technologies, along with their advantages and disadvantages. An important part of developing a document-driven web service is describing it efficiently. So, we also looked at best practices from a WSDL design perspective; namely how to go about separating the data types, and the abstract, concrete parts of the WSDL. We also covered some of the strategies and the considerations that developers should keep in mind when implementing web service endpoints that process the web service messages asynchronously.
Introduction to services architecture
This paper(in PDF Format) introduces the major components of, and standards associated with, the Web services architecture. The different roles associated with the Web services architecture and the programming stack for Web services are described. The architectural elements of Web services are then related to a real-world business scenario in order to illustrate how the Web services approach helps solve real business problems.
Invoking Web services with Java clients
There are two families of Web services clients in the Java
world: unmanaged and J2EE container-managed clients. This
article describes Web services invocation, Web services
standards for Java environments, the different types of Java
Web services clients and explains how to write portable, vendor
independent code.
Patterns and Strategies for Building Document-Based Web Services: Part 1 in a Series
The Java programming language provides developers with the ability to write portable code quickly and efficiently, and XML provides a mechanism to describe data in a portable format. Java and XML therefore form a natural combination and choice for developing web services. This is reinforced though the strong support for developing web services in the Java programming language by the numerous Java specifications addressing different APIs and standards in the Java Community Process.
Realizing Strategies for Document-Based Web Services With JAX-WS 2.0: Part 3 in a Series
This article, Part 3 of the series, will examine how to realize some of the same strategies with the Java API for XML-Based Web Services (JAX-WS) 2.0, a successor to JAX-RPC 1.1. JAX-WS 2.0 has been developed in the Java Community Process program through JSR 224 and extends JAX-RPC with new functionality as well as integration with Java Architecture for XML Binding (JAXB) 2.0 (JSR 222). JAX-WS 2.0 is part of Java EE 5 as well as Java Platform, Standard Edition (Java SE) 6, code-named Mustang. It is available for download independently as well as through Project GlassFish, an open-source Java EE 5 application server.
RESTful SOA using XML
SOA usually implies heavyweight technology for large enterprises, but the advantages of the SOA architectural pattern also apply to smaller environments. This article describes how to follow SOA principles using lightweight principles like REST, rather than all the overhead that is used in larger environments.
The architecture of Web Service Invocation Framework
WSIF was introduced in a previous article which explained how it provides a binding-independent API for simplified Web service invocation. This article will look at some advanced WSIF features.
The art of crafting mobile web services
From when to choose mobile Web services to the overall design guidelines to the value types to use in mobile Web services, this article addresses many of the design considerations you need to ponder when developing web services for mobile devices. It showns you some tricks to use and many of the best practices for designing mobile Web services.
The Java Web Services Developer Pack
Many people see Web services as the next big thing on the Internet. It's certainly a potentially big thing for business-to-business (B2B) collaboration. It used to be that if two companies wanted to exchange information or share application systems, it was often a long and painful process. For example, aligning systems so that a company's inventory system communicated intelligently with a new supplier's production system was typically a real headache involving a lot of negotiation regarding how requests were communicated, how information was represented, and so on. Trying to collaborate between multiple companies usually compounded these headaches.
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.
The Web services (r)evolution: Part 3
This article provides an explanation of how SOAP works, including information about its on-the-wire protocol and how messages are processed.
The Web Services Value Chain
This article is written to help you understand the different layers that make up the value chain of Web Services. For each layer or set of layers there are a number of players that can be identified, each of whom focuses on one level in particular (back-office level or application level).
Using Google Web Services API in Java
Google uses SOAP and WSDL standards to allow access from most programming languages. In addition to the SOAP access, Google has created a set of Java wrapper classes that encapsulates access to the Google Web APIs. This tutorial discusses the Java classes and the functionality of the Google web services.
Using Java to Handle Custom WSDL Data Types
What happens when neither the default WSDL type system nor the default encoding meet your application's needs? Don't worry, you can use custom data types and encoding formats in conjunction with Java to solve the problem.
Utilizing a Non-Java Web Service with Axis2
Discover how Axis2 is not just the next version of the Axis 1.x family; rather, it is a revolutionary version of Axis 1.x. Axis2 is no longer bound to request-response Web service invocation.
Web Services Architectures and Best Practices
This article covers some of the architectural challenges posed
by Web Services, examines how to use (and not to use) Web
Services, and defines the best practices in applying Web
Services for solving tough architectural problems, such as
cross-language or cross-system integration.
Web Services Metadata
The "JSR 181" effort is led by BEA systems and is presently in the public review stage of the JCP. There objective... A rapid and simple solution to define and develop web services.
Web-based data mining
Automatically extract information with HTML, XML, and Java. In
this article, a method for Web-based data mining is developed
using the standard technologies of the Web -- HTML, XML, and
Java. This method is equal in power, if not more powerful, than
other proprietary solutions and requires little effort to
produce robust results for those already familiar with the
technologies of the Web. As an added bonus, much of the code
needed to begin data extraction is included with this article.
What's New in SOA and Web Services?
This article introduces you to the first three of these enhanced capabilities and the emerging technologies, tools, and infrastructure software from Sun that provide them. The article also points to places where you can get more information about these topics. Table 1 at the end of this article briefly summarizes the other enhanced capabilities.
Wireless devices consume web services
JSR 172 specification provides support for remote service
invocation and XML parsing at the device level -- this means
that developers don't have to embed such functionality into
each wireless application. This article introduces the remote
service invocation optional package API that allows web
services to go wireless.
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