MathProcessor narrowing types

[dohrayme]

MVEL 2.0.19

If I have a function:

def abs(x) {
(x >= 0) ? x : -x
}

and use it thus: abs(Integer / BigDecimal)

where the egress type is going to be (is fixed to be) a BigDecimal, a ClassCast exception is thrown during the abs function negation step. Investigating I see a BigDecimal signer is being used but the division operation result has had its type narrowed to be a Double, see MathsProcessor::_doOperations it always passes true to doBigDecimalArithmetic which results in the type being narrowed. Should this not be conditional on the operands and return type?

[mikebrock]

Can you confirm this is still a problem in MVEL 2.1.Beta6, because there will be no 2.0.20. 2.1 is the next 2.x.x version.

On Aug 5, 2011, at 6:35 AM, dohrayme wrote:

MVEL 2.0.19

If I have a function:

def abs(x) {
(x >= 0) ? x : -x
}

and use it thus: abs(Integer / BigDecimal)

where the egress type is going to be (is fixed to be) a BigDecimal, a ClassCast exception is thrown during the abs function negation step. Investigating I see a BigDecimal signer is being used but the division operation result has had its type narrowed to be a Double, see MathsProcessor::_doOperations it always passes true to doBigDecimalArithmetic which results in the type being narrowed. Should this not be conditional on the operands and return type?

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