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The Java Business Integration specification (Java Specification Request 208) defines a standard means for assembling integration components to create integration solutions that enable a service-oriented architecture (SOA) in an enterprise information system. These components are plugged into a JBI environment and can provide or consume services through it in a loosely coupled way. The JBI environment then routes the exchanges between those components and offers a set of technical services. A com

BPEL (Business Process Execution Language) has become one of the most important technologies of SOA (service-oriented architecture) and enables easy and flexible composition of services into business processes. BPEL is particularly important because it introduces a new concept into application development—programming-in-the-large. This concept enables us to develop processes quickly by defining the order in which services will be invoked. This way, applications (and information systems) become

本文主要列举了在使用Java泛型时应该注意的问题。Java泛型是Java5的一个重要特性，它和自动装箱、变长参数等新特性一起，提升了Java代码的健壮性和易用性，但SUN本身过分强调向前的兼容性，也引入了不少问题和麻烦。[@more@]JAVA泛型和C++泛型的区别： Java的泛型被定义成擦除，而C++的泛型则是扩展； 对于C++模板，当参数类型为不同的类型时，生成的模板实例也是不同的类型，如：定义类模板 Template <typename T> class A : public B<T>; 当实例化模板时 A<int> a;

Aspect-Oriented Programming (AOP) is a new exciting paradigm. It is not a competitor to the famous Object-Oriented Programming (OOP), they actually complement each other. It can be considered an extension to OOP. AOP modularizes software applications based on loosely coupled aspects, whereas OOP does it by using Encapsulation, Inheritance, and Polymorphism.AOP is a concept and not bound to any programming language. Software vendors can provide implementation for AOP in any programming language a

There are a number of major areas where users can get into trouble when using Axis2. In this article, I provide possible solutions and suggestions to most of the problems you may face when you start to use Axis2. Even though this article is titled ‘10 Biggest Mistakes Developers make in Axis2’, rather than just citing problems and relevant solutions, I go one step ahead by explaining the major areas where you are most likely to get into trouble and by showing you how to overcome those situatio

Web services are in high demand and a large number of players have entered the web service arena. As a result of this, users are looking for more and more features, and they are trying to do everything by using Web services. By design, Web services are said to be stateless. There was no notion of managing sessions in the Web service world, but now this has changed and users cannot develop an advanced application without managing state. A good example would be banking applications where you log i

Axis2 has designed and implemented in a way that makes the end user's job easier. Once he has learnt and understood the Axis2 basics, working with Axis2 is very convenient. Discussing Axis2 basic and its architecture is obviously out of scope of this document; if you are interesting in those topics, there are enough documents for reference. There are slight changes in the way that you implement a service in Axis2 and Axis1. Axis2 introduced a new way of deploying a service as an archive file whe

Axis 2.0 is the next generation of the Apache Web service stack. Axis2 is built on a new architecture that was designed to be a much more flexible, efficient, and configurable version of Axis. Even though the architecture is new, some of the well-established concepts from Axis 1.x, such as handlers, are preserved in Axis 2.0. Axis 2.0 comes with lots of new features, enhancements, and new industry specification implementations. Among the new features and enhancements are AXIOM, Asynchronous Web

Web services have become highly demanding and a large number of players have entered the Web service arena. Axis2 is the latest solution by Apache solutions to the Web service stack, which addresses some of the drawbacks of the Axis 1.x family and introduces some new concepts into the Web service stack. Axis2 is a highly flexible, easily configurable, highly reliable SOAP processing engine. One of the main advantages gained from Axis2 is the dynamic handler chain; although the notion of handler

The openssl command-line binary that ships with the OPENSSL libraries can perform a wide range of cryptographic operations. It can come in handy in scripts or for accomplishing one-time command-line tasks.Documentation for using the openssl application is somewhat scattered, however, so this article aims to provide some practical examples of its use. I assume that you’ve already got a functional OpenSSL installation and that the openssl binary is in your shell’s PATH.Just to be clear, this ar