"Alex" wrote : Providing a debugger API is a compelling task. I thought about it for a while and here are my first ideas. Comments are welcome :) | | Debugging is about setting breakpoints in the process *definition*, intercepting the *execution* and then stepping through the following steps. jBPM already offers a mechanism to observe the execution of a process. I can think of providing debugging facilities by creating a process instance with runtime actions installed at the node-enter event of every activity. I will call them "interceptors". | | There are two execution modes, "continuous" or "step-by-step". In the former, only interceptors marked as "breakpoints" can suspend the process execution. In the latter, all interceptors can suspend execution. | | Communication between the BPEL runtime and the debugger occurs through some remoting technology. EJBs are an option, but web services seem more appropriate since BPEL is about web services. | | The exposed operations are: | | setBreakpoint(processName: QName, activityName: String) | ---- | Mark the interceptor at the entrance of the specified activity, which belongs to the specified process, as a breakpoint. | | debug(processName: QName) : ProcessInstanceHandle | --- | Create an instance of the specified process for debugging purposes. Returns a handle to the newly created instance. | | getBranches(instanceHandle: ProcessInstanceHandle) : List | --- | Retrieves the execution branches of the specified process instance. | | stepInto(branchHandle: ProcessBranchHandle) | --- | Executes the specified branch up to the next activity. If the branch currently points to a scope, execution will proceed up to the activity nested within the scope. | | stepOver(branchHandle: ProcessBranchHandle) | --- | Executes the specified branch up to the next activity. If the branch currently points to a scope, execution will proceed up to the activity that follows the scope. | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3964910#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...