func newSargableOr(expr *expression.Or) *sargableOr {
rv := &sargableOr{}
rv.test = func(expr2 expression.Expression) (bool, error) {
for _, child := range expr.Operands() {
if !SargableFor(child, expr2) {
return false, nil
}
}
return true, nil
}
return rv
}
func (this *JSConverter) VisitOr(expr *expression.Or) (interface{}, error) {
var buf bytes.Buffer
buf.WriteString("(")
for i, op := range expr.Operands() {
if i > 0 {
buf.WriteString(" || ")
}
buf.WriteString(this.Visit(op))
}
buf.WriteString(")")
return buf.String(), nil
}
func newSargOr(expr *expression.Or) *sargOr {
rv := &sargOr{}
rv.sarg = func(expr2 expression.Expression) (Spans, error) {
if expr.EquivalentTo(expr2) {
return _SELF_SPANS, nil
}
spans := make(Spans, 0, len(expr.Operands()))
for _, child := range expr.Operands() {
cspans := SargFor(child, expr2)
if len(cspans) > 0 {
spans = append(spans, cspans...)
}
}
return spans, nil
}
return rv
}
