func newSargAny(pred *expression.Any) *sargAny {
rv := &sargAny{}
rv.sarger = func(expr2 expression.Expression) (plan.Spans, error) {
if SubsetOf(pred, expr2) {
return _SELF_SPANS, nil
}
all, ok := expr2.(*expression.All)
if !ok {
return nil, nil
}
array, ok := all.Array().(*expression.Array)
if !ok {
return nil, nil
}
if !pred.Bindings().EquivalentTo(array.Bindings()) {
return nil, nil
}
if array.When() != nil &&
!SubsetOf(pred.Satisfies(), array.When()) {
return nil, nil
}
return sargFor(pred.Satisfies(), array.Mapping(), false)
}
return rv
}
func newSargableAny(pred *expression.Any) *sargableAny {
rv := &sargableAny{}
rv.test = func(expr2 expression.Expression) (bool, error) {
if SubsetOf(pred, expr2) {
return true, nil
}
all, ok := expr2.(*expression.All)
if !ok {
return false, nil
}
array, ok := all.Array().(*expression.Array)
if !ok {
return false, nil
}
mappings := expression.Expressions{array.Mapping()}
if !pred.Bindings().EquivalentTo(array.Bindings()) {
return false, nil
}
if array.When() != nil &&
!SubsetOf(pred.Satisfies(), array.When()) {
return false, nil
}
return SargableFor(pred.Satisfies(), mappings) > 0, nil
}
return rv
}
func (this *subsetAny) VisitAny(expr *expression.Any) (interface{}, error) {
return this.any.Bindings().EquivalentTo(expr.Bindings()) &&
SubsetOf(this.any.Satisfies(), expr.Satisfies()), nil
}
