func newSargLE(expr *expression.LE) *sargLE {
rv := &sargLE{}
rv.sarg = func(expr2 expression.Expression) (Spans, error) {
if expr.EquivalentTo(expr2) {
return _SELF_SPANS, nil
}
var exprs expression.Expressions
span := &Span{}
if expr.First().EquivalentTo(expr2) {
exprs = expression.Expressions{expr.Second().Static()}
span.Range.High = exprs
span.Range.Inclusion = datastore.HIGH
} else if expr.Second().EquivalentTo(expr2) {
exprs = expression.Expressions{expr.First().Static()}
span.Range.Low = exprs
span.Range.Inclusion = datastore.LOW
}
if len(exprs) == 0 {
return nil, nil
}
return Spans{span}, nil
}
return rv
}
