Steve Lawrence created DAFFODIL-2841:
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Summary: Layers do not support (or poorly documented) creating
SDE or Parse/UnparseErrors
Key: DAFFODIL-2841
URL: https://issues.apache.org/jira/browse/DAFFODIL-2841
Project: Daffodil
Issue Type: Bug
Components: Back End
Reporter: Steve Lawrence
>From what I can tell, there is no way for a layer signal that an error
>occurred, or at least non of our current layers seem to check and handle any
>errors, so if it can be done it needs better examples.
If a we do something like layerRuntimeInfo.runtimeData.SDE(...), then that SDE
exception is caught by the layer infrastructure and turned into a
LayerExecutionException, which seems like it's used to indicate bugs in a
layer. Throwing an SDE should not be considered a bug.
It looks like some functions do provide ParseOrUnparseState, so maybe we could
create a Parse/UnparseError, but it's not exactly clear or documented if/how
this should be used, or even if the layer infrastructure checks the state. This
needs some clarification.
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