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package orm
import (
"reflect"
"github.com/go-pg/pg/v10/internal"
"github.com/go-pg/pg/v10/types"
)
type sliceModel struct {
Discard
slice reflect.Value
nextElem func() reflect.Value
scan func(reflect.Value, types.Reader, int) error
}
var _ Model = (*sliceModel)(nil)
func newSliceModel(slice reflect.Value, elemType reflect.Type) *sliceModel {
return &sliceModel{
slice: slice,
scan: types.Scanner(elemType),
}
}
func (m *sliceModel) Init() error {
if m.slice.IsValid() && m.slice.Len() > 0 {
m.slice.Set(m.slice.Slice(0, 0))
}
return nil
}
func (m *sliceModel) NextColumnScanner() ColumnScanner {
return m
}
func (m *sliceModel) ScanColumn(col types.ColumnInfo, rd types.Reader, n int) error {
if m.nextElem == nil {
m.nextElem = internal.MakeSliceNextElemFunc(m.slice)
}
v := m.nextElem()
return m.scan(v, rd, n)
}
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