Fault tolerance
Fault tolerance indicates the ability to operate in a predictive manner, when one or more failures happen in the system. In Java-based applications, these faults are managed using exception handling mechanisms. jBPM is no exception; it uses the exception handling approach to be fault-tolerant.
Exception handling in process definitions
We can specify the occurrence and the handling mechanisms that happen in a business process using BPMN elements, as follows:
Error events can be used to specify the occurrence of an unexpected situation. Compared to Java programming, this is similar to throwing an error.
Compensation can be used to specify what to do when an error has occurred; this is similar to the catch operation construct in a Java program.
The advantage of using exception handling at a process level is that the exception scenarios are visible in the process, thus making the monitoring and analysis of these scenarios easier, thereby contributing to continuous improvements of...
