W E B   S E R V I C E S  

Chapter  

14 

14. Web 

Services 

How to Make Your Java Logic Globally Interoperable by 

Christoph G. Jung, Peter Braswell and Frederik M. 

Brier 

Web Services are self contained pieces of code that have three distinguishing properties: 

1.  They communicate in an interoperable XML protocol, such as SOAP. 

2.  They describe themselves in an interoperable XML meta format, such as WSDL. 

3.  They are able to federate globally through XML based registry services, such as 

UDDI. 

JBoss supports both the construction of Java based Web Services as well as the integration 

of possibly non Java based external Web Services through the JBoss.Net extension. A 

special focus is placed on patterns and tools to expose J2EE  based logic, such as session 

beans and entity beans. A special focus is also placed on interoperability with Microsoft 

.Net  as a prominent client platform.  JBoss.Net bases on the Apache Axis implementation 

of the JAX RPC API. This chapter provides some basic configuration details. For details 

about XML serialization using Axis, please see the Axis User Guide. For details about 

particular features of JBoss.Net, such as the possibility to map CMP2.0 bean structures to 

typed .Net datasets and Macromedia Flash support, please see the full JBoss 3.0 

documentation (which is still to be completed in this respect). 

What is all this buzz? 

What is XML and XML Schema? 

Come on, dude? You really missed that XML is the ASCII of the new millenium? Get real!  

Example of XML document   CGJ 

The XML Schema description language is a meta language to describe and analyze the 

structure of well formed XML documents according to particular schema types. Types can be 

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