zeroshade commented on code in PR #1679:
URL: https://github.com/apache/iceberg-go/pull/1679#discussion_r3857335082
##########
exprs.go:
##########
@@ -1121,7 +1124,17 @@ func (u *UnboundTransform) Equals(other UnboundTerm)
bool {
}
func (u *UnboundTransform) Bind(schema *Schema, caseSensitive bool)
(BoundTerm, error) {
- bound, err := u.term.Bind(schema, caseSensitive)
+ if isUnknownTransform(u.transform) {
Review Comment:
`NewUnboundTransform` is exported and accepts a `Transform` interface, so
callers can pass `nil`. In that case this check falls through and
`u.transform.CanTransform(...)` panics instead of returning an error. I
reproduced this with `NewUnboundTransform(nil, Reference("x"))` followed by
predicate binding. Since `Bind` already reports unknown and incompatible
transforms as errors, please reject a nil transform here (for example with
`ErrInvalidArgument`) and add a regression test.
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