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Developing Client Applications to Use a Web Service

Name: Duke Smith

Code Example 5.10

HTML Document

A different use case might be EJB components using returned data in a work 

flow. For example, as the workflow progresses, they may provide order tracking

updates by formatting the tracking data in HTML and attaching it to an e mail

message sent to the customer. Unless the initial request originated from a Web tier

client, EJB components in a workflow situation do not have Web tier technologies

such as JSP available to them. Furthermore, the order tracking service may return

results as XML documents, requiring EJB components to apply XSL transforma 

tions to these documents. Code Example 5.11 shows an XML document contain 

ing the returned data from the service. 

54321

SHIPPED

Smith

Duke

Code Example 5.11

Data Returned as XML Document

An EJB component may use the XSL stylesheet shown in Code Example 5.12

to transform an order details XML document to the same HTML document as in

Code Example 5.10. This HTML document may be attached to an e mail message

and sent to a customer. XSLT transformations may also be used to transform a

document into multiple formats for different types of clients.