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hook.go
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hook.go
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package orm
import "reflect"
const (
AfterQueryHookFlag = 1 << iota
AfterSelectHookFlag
BeforeInsertHookFlag
AfterInsertHookFlag
BeforeUpdateHookFlag
AfterUpdateHookFlag
BeforeDeleteHookFlag
AfterDeleteHookFlag
)
type hookStubs struct{}
func (hookStubs) AfterQuery(_ DB) error {
return nil
}
func (hookStubs) AfterSelect(_ DB) error {
return nil
}
func (hookStubs) BeforeInsert(_ DB) error {
return nil
}
func (hookStubs) AfterInsert(_ DB) error {
return nil
}
func (hookStubs) BeforeUpdate(_ DB) error {
return nil
}
func (hookStubs) AfterUpdate(_ DB) error {
return nil
}
func (hookStubs) BeforeDelete(_ DB) error {
return nil
}
func (hookStubs) AfterDelete(_ DB) error {
return nil
}
func callHookSlice(slice reflect.Value, ptr bool, db DB, hook func(reflect.Value, DB) error) error {
var firstErr error
for i := 0; i < slice.Len(); i++ {
var err error
if ptr {
err = hook(slice.Index(i), db)
} else {
err = hook(slice.Index(i).Addr(), db)
}
if err != nil && firstErr == nil {
firstErr = err
}
}
return firstErr
}
type afterQueryHook interface {
AfterQuery(db DB) error
}
var afterQueryHookType = reflect.TypeOf((*afterQueryHook)(nil)).Elem()
func callAfterQueryHook(v reflect.Value, db DB) error {
return v.Interface().(afterQueryHook).AfterQuery(db)
}
func callAfterQueryHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callAfterQueryHook)
}
type afterSelectHook interface {
AfterSelect(db DB) error
}
var afterSelectHookType = reflect.TypeOf((*afterSelectHook)(nil)).Elem()
func callAfterSelectHook(v reflect.Value, db DB) error {
return v.Interface().(afterSelectHook).AfterSelect(db)
}
func callAfterSelectHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callAfterSelectHook)
}
type beforeInsertHook interface {
BeforeInsert(db DB) error
}
var beforeInsertHookType = reflect.TypeOf((*beforeInsertHook)(nil)).Elem()
func callBeforeInsertHook(v reflect.Value, db DB) error {
return v.Interface().(beforeInsertHook).BeforeInsert(db)
}
func callBeforeInsertHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callBeforeInsertHook)
}
type afterInsertHook interface {
AfterInsert(db DB) error
}
var afterInsertHookType = reflect.TypeOf((*afterInsertHook)(nil)).Elem()
func callAfterInsertHook(v reflect.Value, db DB) error {
return v.Interface().(afterInsertHook).AfterInsert(db)
}
func callAfterInsertHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callAfterInsertHook)
}
type beforeUpdateHook interface {
BeforeUpdate(db DB) error
}
var beforeUpdateHookType = reflect.TypeOf((*beforeUpdateHook)(nil)).Elem()
func callBeforeUpdateHook(v reflect.Value, db DB) error {
return v.Interface().(beforeUpdateHook).BeforeUpdate(db)
}
func callBeforeUpdateHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callBeforeUpdateHook)
}
type afterUpdateHook interface {
AfterUpdate(db DB) error
}
var afterUpdateHookType = reflect.TypeOf((*afterUpdateHook)(nil)).Elem()
func callAfterUpdateHook(v reflect.Value, db DB) error {
return v.Interface().(afterUpdateHook).AfterUpdate(db)
}
func callAfterUpdateHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callAfterUpdateHook)
}
type beforeDeleteHook interface {
BeforeDelete(db DB) error
}
var beforeDeleteHookType = reflect.TypeOf((*beforeDeleteHook)(nil)).Elem()
func callBeforeDeleteHook(v reflect.Value, db DB) error {
return v.Interface().(beforeDeleteHook).BeforeDelete(db)
}
func callBeforeDeleteHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callBeforeDeleteHook)
}
type afterDeleteHook interface {
AfterDelete(db DB) error
}
var afterDeleteHookType = reflect.TypeOf((*afterDeleteHook)(nil)).Elem()
func callAfterDeleteHook(v reflect.Value, db DB) error {
return v.Interface().(afterDeleteHook).AfterDelete(db)
}
func callAfterDeleteHookSlice(slice reflect.Value, ptr bool, db DB) error {
return callHookSlice(slice, ptr, db, callAfterDeleteHook)
}