11g fileadapter - read operation triggered by file

Hi,
I have practiced with the new file adapter feature to trigger a read operation by an endfile. The read operation that is triggered by a file is useful in specific scenario's, but I have a question about it.
There is no correlation between a file and a trigger file. What will happen when multiple files are written at once with multiple corresponding trigger files. How does the engine knows which trigger file belongs to which fle so that the correct completely written file is processed? I do not have a clear answer on this question yet.
I know that the current 11g tech preview is not complete and some features that are in the preview will not survive in the final release, but I am curious about your thoughts about this issue.
Regards,
-Tom

Hi tom,
The documentation for triggering mechanism is here: http://otndnld.oracle.co.jp/document/products/as10g/101310/doc_cd/integrate.1013/b28994/adptr_file.htm#CIAJCBGI
In a nutshell, the trigger file is associated with an endpoint and not with individual files for the endpoint directory. Consider a scenario wherein a third party application writes files in some folder and your BPEL process needs to process all the files when a certain marker file appears somewhere in the file system. In such a case, you will define the wsdl as:
<jca:operation
PhysicalDirectory="C:\ORAHOME\integration\jdev\jdev\mywork\triggers_proj\inputDir"
ActivationSpec="oracle.tip.adapter.file.inbound.FileActivationSpec"
IncludeFiles="Order.*\.xml"
PollingFrequency="30"
TriggerFilePhysicalDirectory="C:\foo"
TriggerFile="Purchaseorder.trg"
</jca:operation>
In this example, adapter will start processing the Order*.xml files only when it finds the marker file "Purchaseorder.trg" in "C:\foo"
Hope this answers your question.

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Set-FileIntegrity
https://technet.microsoft.com/en-us/library/jj218351.aspx
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Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

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DamonGrant wrote:
Thanks for those suggestions Erik...
It's been happening for a month I guess and I don't think that anything new's been installed. I will try recording to the start up disc and to maybe to some USB discs I have.
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11g fileadapter - read operation triggered by file

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