Result Checkers

A result checker is a custom Java class that can be implemented to customize error checking for mobile business object (MBO) operations.

Not all MBO operations can use a "standard" error reporting technique as the EIS system may return error codes or failures through various fields; In such cases, you may want to implement your own custom result checker. Doing so allows you to check any field for errors, or implement logic that determines what constitutes an error, and the severity of the error.

A custom result checker can throw errors for both a scheduled cache refresh as well as an on demand cache refresh:

For a scheduled refresh – the result checker writes a log message that describes the nature of the error to the Unwired Server log. As a consequence of this error, the transaction for the entire cache group is rolled back. The device client user is not notified of these errors; no client log records are generated.
On demand refresh – instead of writing the error to the server log, the log message is written to the Unwired Server. Services in the server handle the exception. As a consequence of this error, the transaction for the cache group is rolled back. But in this case, a client log record is generated, which is visible to the client application after synchronization.

Both cases send the OperationStatusEvent. This event indicates that an operation failed to execute properly. The server uses OperationStatusEvent to populate a statistics repository that tracks the success or failure of EIS operation invocations. An administrator can review these statistics in Sybase Control Center, by clicking the Monitor node in the left navigation pane. See Reviewing System Monitoring Data in System Administration of the Unwired Platform .

Default SAP Result Checker Code
Default Result Checkers are built-in result checkers that are applied automatically on MBO operations by Unwired Server. They can be replaced by implementing and deploying a Custom Result Checker. This is the default result checker used to check results in SAP® data sources.
Default SOAP Result Checker Code
Default Result Checkers are built-in result checkers that are applied automatically on MBO operations by Unwired Server. They can be replaced by implementing and deploying a Custom Result Checker. This is the default result checker used to check results in SOAP Web service data sources.
Default REST Result Checker Code
Default Result Checkers are built-in result checkers that are applied automatically on MBO operations by Unwired Server. They can be replaced by implementing and deploying a Custom Result Checker. This is the default result checker used to check results in REST Web service data sources.