Poller database to start the flow of control
I'm relatively new to BPEL/SOA. I need your help in the design processI have a design as follows:
I basically bring DB2 database data in Siebel. On the side of Siebel, I have created Web services.
1 rowid, tablename, isTheRowProcessed, timestamp.is structure the structure of the table of my polling station.
The tablename column will tell me what table of application has been updated / inserted with new data.
2. the Poller of database queries the table of voting every minute and there is a new line. The BPEL will read the tablename column and retrieve the name of the table.
3. According to the name of the tablename, a specific Web Service will be called which inserts data into the Siebel system.
for example, if the new line is:
10 TableA NotRead 19/08/2012 10:10:10
The interrogator must read above and make 'TableA 10 read 19/08/2012 10:10:10 '
Then WebServiceA should be called with data.
Here's my question:
Async BPEL process or synchronous process that should have the Poller?
Will be the Poller void kick start / BPEL process?
Hello
After you configure the adapter of database as a Service, drop a BPEL component until the middle of the composite and select the model as "Based on a WSDL" and select the WSDL from database adapter you have configured.
In addition, uncheck the box for "exhibit as a SOAP Service' we don't want that to be exposed as a service, we want just the BPEL instance trigger when there are new lines in the table.
Now connect the BPEL and the database adapter using wire.
Don't worry on the check, default instance when you connect the BPEL and the database adapter, it will be checked. Now code your logic inside the BPEL as which service to call according to the data.
So, you need to do the steps above for your business logic and Yes, the BPEL interface will be one-way (if you follow the steps as mentioned, by default it will become one-way, don't you worry about this).
And, whenever records are in the table, to come to the second Question, Yes, the extracted database adapter lines and gives them as input XML in the process BPEL that you can see the instances are created in the Console of EM FMW.
Hope this helps,
N
Tags: Fusion Middleware
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