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Oracle SOA Suite 11g R1 Developer's Guide by Antony Reynolds, Matt Wright

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Creating services from files

A common mechanism for communicating with an existing application is through a file. Many applications will write their output to a file, expecting it to be picked up and processed by other applications. By using the file adapter, we can create a service representation that makes the file producing application appear as an SOA-enabled service that invokes other services. Similarly, other applications can be configured to take input by reading files. A file adapter allows us to make the production of the file appear as an SOA invocation, but under the covers, the invocation actually creates a file.

File communication is either inbound (this means that a file has been created by an application and must be read) or outbound ...

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