132 lines
2.5 KiB
Go
132 lines
2.5 KiB
Go
package bun
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import (
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"context"
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"database/sql"
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"reflect"
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"time"
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"github.com/uptrace/bun/schema"
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)
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type sliceTableModel struct {
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structTableModel
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slice reflect.Value
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sliceLen int
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sliceOfPtr bool
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nextElem func() reflect.Value
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}
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var _ TableModel = (*sliceTableModel)(nil)
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func newSliceTableModel(
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db *DB, dest interface{}, slice reflect.Value, elemType reflect.Type,
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) *sliceTableModel {
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m := &sliceTableModel{
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structTableModel: structTableModel{
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db: db,
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table: db.Table(elemType),
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dest: dest,
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root: slice,
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},
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slice: slice,
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sliceLen: slice.Len(),
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nextElem: makeSliceNextElemFunc(slice),
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}
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m.init(slice.Type())
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return m
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}
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func (m *sliceTableModel) init(sliceType reflect.Type) {
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switch sliceType.Elem().Kind() {
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case reflect.Ptr, reflect.Interface:
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m.sliceOfPtr = true
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}
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}
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func (m *sliceTableModel) join(name string) *relationJoin {
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return m._join(m.slice, name)
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}
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func (m *sliceTableModel) SetCap(cap int) {
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if cap > 100 {
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cap = 100
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}
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if m.slice.Cap() == 0 {
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m.slice.Set(reflect.MakeSlice(m.slice.Type(), 0, cap))
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}
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}
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func (m *sliceTableModel) ScanRows(ctx context.Context, rows *sql.Rows) (int, error) {
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columns, err := rows.Columns()
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if err != nil {
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return 0, err
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}
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m.columns = columns
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dest := makeDest(m, len(columns))
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if m.slice.IsValid() && m.slice.Len() > 0 {
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m.slice.Set(m.slice.Slice(0, 0))
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}
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var n int
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for rows.Next() {
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m.strct = m.nextElem()
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m.structInited = false
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if err := m.scanRow(ctx, rows, dest); err != nil {
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return 0, err
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}
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n++
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}
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if err := rows.Err(); err != nil {
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return 0, err
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}
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return n, nil
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}
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var _ schema.BeforeAppendModelHook = (*sliceTableModel)(nil)
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func (m *sliceTableModel) BeforeAppendModel(ctx context.Context, query Query) error {
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if !m.table.HasBeforeAppendModelHook() {
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return nil
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}
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sliceLen := m.slice.Len()
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for i := 0; i < sliceLen; i++ {
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strct := m.slice.Index(i)
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if !m.sliceOfPtr {
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strct = strct.Addr()
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}
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err := strct.Interface().(schema.BeforeAppendModelHook).BeforeAppendModel(ctx, query)
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if err != nil {
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return err
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}
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}
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return nil
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}
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// Inherit these hooks from structTableModel.
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var (
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_ schema.BeforeScanRowHook = (*sliceTableModel)(nil)
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_ schema.AfterScanRowHook = (*sliceTableModel)(nil)
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)
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func (m *sliceTableModel) updateSoftDeleteField(tm time.Time) error {
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sliceLen := m.slice.Len()
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for i := 0; i < sliceLen; i++ {
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strct := indirect(m.slice.Index(i))
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fv := m.table.SoftDeleteField.Value(strct)
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if err := m.table.UpdateSoftDeleteField(fv, tm); err != nil {
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return err
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}
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}
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return nil
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}
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