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package builder
import "fmt"
type condAnd []Cond
var _ Cond = condAnd{}
func And(conds ...Cond) Cond {
var result = make(condAnd, 0, len(conds))
for _, cond := range conds {
if cond == nil || !cond.IsValid() {
continue
}
result = append(result, cond)
}
return result
}
func (and condAnd) WriteTo(w Writer) error {
for i, cond := range and {
_, isOr := cond.(condOr)
if isOr {
fmt.Fprint(w, "(")
}
err := cond.WriteTo(w)
if err != nil {
return err
}
if isOr {
fmt.Fprint(w, ")")
}
if i != len(and)-1 {
fmt.Fprint(w, " AND ")
}
}
return nil
}
func (and condAnd) And(conds ...Cond) Cond {
return And(and, And(conds...))
}
func (and condAnd) Or(conds ...Cond) Cond {
return Or(and, Or(conds...))
}
func (and condAnd) IsValid() bool {
return len(and) > 0
}
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