[seam-issues] [JBoss JIRA] Work started: (SEAMCATCH-32) untangle processing of exceptions in stack

untangle processing of exceptions in stack ------------------------------------------ Key: SEAMCATCH-32 URL: https://issues.jboss.org/browse/SEAMCATCH-32 Project: Seam Catch Issue Type: Task Components: Core Implementation Affects Versions: 3.0.0.Alpha2 Reporter: Dan Allen Assignee: Jason Porter Fix For: 3.0.0.Alpha4 Currently, the exceptions in the stack are being handled in tandem. All the breadth-first type visiting is happening for each exception in the stack, then all the depth-first type visiting is happening. Each exception should be processed in turn. Consider this case: The following exception chain is thrown: E1 -> E2 -> E3 (where "X -> Y" means X is caused by Y). Also, E3S is a superclass of E3. Let's assume there are handlers for all four exception types for both traversal modes (breadth-first and depth-first). The expected order of execution is as follows: E3S handler in the breadth-first traversal mode E3 handler in the breadth-first traversal mode E3 handler in the depth-first traversal mode E3S handler in the depth-first traversal mode E2 handler in the breadth-first traversal mode E2 handler in the depth-first traversal mode E1 handler in the breadth-first traversal mode E1 handler in the depth-first traversal mode We process the exceptions in the stack in the order E3, E2, E1 because we assume the cause, E3 is the most important exception.