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From Builder AU]
In every business process, messages are exchanged between participants. So far we have only looked at simple interactions, that is a single request followed by a reply, whether synchronous or asynchronous.
Asynchronous messaging adds additional complexities around the routing and correlation of replies. In this chapter, we will look at how BPEL PM uses WS-Addressing to manage this and in situations where this can't be used, examine how we can use correlation sets in BPEL to achieve the same result.
The article continues at
http://www.builderau.com.au/program/oracle/soa/Message-Interaction-Patterns/0,339028441,339299400,00.htm
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