June 2003
Intermediate to advanced
672 pages
23h 48m
English
Content preview from Java Web Services in a Nutshell
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Providers and Asynchronous Messaging
The asynchronous messaging and reliable delivery features of JAXM are implemented by a messaging provider. The specification itself says very little about the provider, other than to describe the API needed to access it, leaving the details to be determined by implementations. In practice, application code is almost unaffected by the presence of a provider, but it is very important to understand how to configure the provider and how to deploy the application with the appropriate settings required to access it. In this section, we look at the API that application code uses to work with the provider, and at how to configure the provider included with the JAXM reference implementation.
Provider Message Path
When a message provider is in use, the logical flow of a message is still directly from the sender to the receiver, but the actual flow is somewhat different, as shown in Figure 4-4.
Figure 4-4. Logical and actual message flow when using a messaging provider
In order to send messages, the
sender first connects to the local provider and determines whether it
supports the messaging profile that it wants to use; if so, it
obtains a MessageFactory for that profile. Each
message is then handled as follows:
The sender creates a SOAP message using the SAAJ API with the
MessageFactoryfor the selected messaging profile.The message is sent to the local provider. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.