Trigger the update of java client when the table is modified
I have a Java Swing client and a worker C program. The two must communicate with each other via events (written C progression in Oracle, Java Swing client table displays the progress of the user).
I thought I could do this via a trigger on an oracle table. However, I could not understand how to do this. Well, create the trigger was the easy part, but how can I leave the trigger and monitoring a stored procedure to communicate with my Java client? All the info I found was on the triggers and how to store a Java method in an Oracle DB. This isn't what I need. I guess I must register my Java client in some way to monitor relaxation / table.
Does anyone know how to do? I prefer not to use additional libraries (libraries AQ Oracle, Oracle streams). A simple trigger would suffice.
Thank you very much for your help!
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Does anyone know how to do?
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Use the 'Database change Notification' feature to JDBC. See this article in the Guide of the Dev of JDBC
http://docs.Oracle.com/CD/B28359_01/Java.111/b31224/dbmgmnt.htm
And 29-2 in the doc it shows how to use
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In this example, if you leave the registration now open instead of close, then change thread notification database continues to function. Now, if you run a DML query that modifies the SCOTT. DEPT table and commit, say SQL * Plus, the Java program then prints the notification.
Tags: Oracle
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