MQSeries.net :: View topic - Java User defined extensions and Exception Handling

hallmark · Posted: Mon May 23, 2005 4:50 am Post subject:

Hello,

I am at my wit's end trying to write a java user defined extension. I have written one that writes to a database using JDBC. However I cannot figure out how to deal with exceptions (e.g. SQLException). I catch the exception in the evaluate method, but I need to throw it out of the node so that it can be dealt with using a subsequent error handling flow. I try to create an MbUserException as follows

throw new MbUserException(this.getClass().getName(), "DatabaseInsertClobNode",
"resources",
"SQLE",
sqle.getMessage(),
new Object[]{sqle});

using the documented constructor.

public MbUserException(String className,
String methodName,
String messageSource,
String messageKey,
String traceText,
Object[] inserts)

I think message source and key can refer to a ResourceBundle which I have tried to implement.
I don't know what inserts are???

I have a resource file which consists of key value pairs for error messages but my message comes out as follows:

<com.ibm.broker.plugin.MbUserException class:com.ibm.semaphore.plugin.DatabaseInsertClobNode method:DatabaseInsertClobNode source:resources key:SQLEmessage: Unable to resolve message: Source: resourcesKey: SQLE >

Further up the exception list:
Unhandled exception in plugin method

I can find no documentation to carry out error handling, most sample code I have found just perform System.out.println statements (Great!)

Has anyone succesfully done anything similar?

Thanks in advance

Rob