Steve Lawrence created DAFFODIL-2781:
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Summary: OOLAG LV evaluated multiple times when there is a failure
Key: DAFFODIL-2781
URL: https://issues.apache.org/jira/browse/DAFFODIL-2781
Project: Daffodil
Issue Type: Bug
Components: Back End
Affects Versions: 3.4.0
Reporter: Steve Lawrence
In debugging DAFFODIL-2393, where an DFDL expression results in a path past
root error SDE, I've found that it is attempting to compile my same invalid
expression multiple times.
Looking at the trace of when the expression is compiled, it looks like the same
OOLAG LV is getting evaluated multiple times, each time when it is used by
another OOLAG LVs. I think what is happening is this LV fails, so never has a
value. When another LV accesses it, it is reevaluated because it doesn't have a
value. Instead, we may want to have OOLAG capture exceptions and rethrow them
if we attempt to reevaluate it again.
This is maybe not a big deal since it only happens in the case when there are
errors, but fixing this might make errors available quicker, and also might
make debugging issues like this easier since there's no confusing about
duplication.
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