Brandon Sloane created DAFFODIL-2176:
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Summary: DPath runExpressionForConstant catches
IllegalStateException
Key: DAFFODIL-2176
URL: https://issues.apache.org/jira/browse/DAFFODIL-2176
Project: Daffodil
Issue Type: Improvement
Components: Clean Ups
Reporter: Brandon Sloane
In DPathRuntime, runExpressionForConstant uses exceptions to signal when the
expression in question cannot be compiled to a constant.
In most cases, this exception would be either InfosetException or
VariableException, which are expected, as the core reason an expression cannot
be reduced to a constant would be a dependence on the infoset or DFDL variables.
However, we also check for IllegalStateException, which could also be thrown as
a result of a geniune error. We should track down why we need to catch this
exception and replace it with a more appropriate type.
I suspect that all the usages of IllegalStateException that we need to catch,
are throwing it explictly as a sentinal to trigger runExpressionForConstant to
bail, so this should be straightforward.
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