Finish BindAll implementation

This commit is contained in:
Patrick O'brien 2016-06-07 14:38:17 +10:00
parent 3e467f2329
commit 4ad069f64d
3 changed files with 39 additions and 17 deletions

View file

@ -148,7 +148,7 @@ func SetSelect(q *Query, columns ...string) {
q.selectCols = append(q.selectCols, columns...)
}
func GetSelect(q *Query) []string {
func Select(q *Query) []string {
cols := make([]string, len(q.selectCols))
copy(cols, q.selectCols)
return cols

View file

@ -57,25 +57,36 @@ func BindOne(row *sql.Row, selectCols []string, obj interface{}) error {
// BindAll inserts the returned rows columns into the
// passed in slice of object pointers
func BindAll(rows *sql.Rows, selectCols []string, obj interface{}) error {
val := reflect.ValueOf(obj)
typ := reflect.TypeOf(obj)
kind := val.Kind()
ptrSlice := reflect.ValueOf(obj)
typ := ptrSlice.Type()
ptrSlice = ptrSlice.Elem()
kind := typ.Kind()
if kind != reflect.Slice {
return fmt.Errorf("BindAll given a non-slice type")
var structTyp reflect.Type
for i, exp := range []reflect.Kind{reflect.Ptr, reflect.Slice, reflect.Ptr, reflect.Struct} {
if i != 0 {
typ = typ.Elem()
kind = typ.Kind()
}
if kind != exp {
return fmt.Errorf("[%d] BindAll object type should be *[]*Type but was: %s", i, ptrSlice.Type().String())
}
if kind == reflect.Struct {
structTyp = typ
}
}
spare := reflect.New(typ.Elem().Elem())
fmt.Printf("%T, %#v, %s\n", spare, spare, spare.Type().String())
index := 0
newStruct := reflect.New(structTyp)
for rows.Next() {
val = reflect.Append(val, spare)
pointers := GetStructPointers(val.Index(index), selectCols...)
pointers := GetStructPointers(newStruct.Interface(), selectCols...)
if err := rows.Scan(pointers...); err != nil {
return fmt.Errorf("Unable to scan into pointers: %s", err)
}
index++
ptrSlice.Set(reflect.Append(ptrSlice, newStruct))
}
return nil
@ -135,7 +146,18 @@ func GetStructValues(obj interface{}, columns ...string) []interface{} {
// GetStructPointers returns a slice of pointers to the matching columns in obj
func GetStructPointers(obj interface{}, columns ...string) []interface{} {
val := reflect.ValueOf(obj).Elem()
ret := make([]interface{}, len(columns))
var ret []interface{}
if len(columns) == 0 {
fieldsLen := val.NumField()
ret = make([]interface{}, fieldsLen)
for i := 0; i < fieldsLen; i++ {
ret[i] = val.Field(i).Addr().Interface()
}
return ret
}
ret = make([]interface{}, len(columns))
for i, c := range columns {
field := val.FieldByName(strmangle.TitleCase(c))

View file

@ -8,7 +8,7 @@ func (q {{$varNameSingular}}Query) One() (*{{$tableNameSingular}}, error) {
boil.SetLimit(q.Query, 1)
res := boil.ExecQueryOne(q.Query)
err := boil.BindOne(res, boil.GetSelect(q.Query), o)
err := boil.BindOne(res, boil.Select(q.Query), o)
if err != nil {
return nil, fmt.Errorf("{{.PkgName}}: failed to execute a one query for {{.Table.Name}}: %s", err)
}
@ -17,14 +17,14 @@ func (q {{$varNameSingular}}Query) One() (*{{$tableNameSingular}}, error) {
}
func (q {{$varNameSingular}}Query) All() ({{$varNameSingular}}Slice, error) {
var o *{{$varNameSingular}}Slice
var o {{$varNameSingular}}Slice
res, err := boil.ExecQueryAll(q.Query)
if err != nil {
return nil, fmt.Errorf("{{.PkgName}}: failed to execute an all query for {{.Table.Name}}: %s", err)
}
err = boil.BindAll(res, boil.GetSelect(q.Query), o)
err = boil.BindAll(res, boil.Select(q.Query), &o)
if err != nil {
return nil, fmt.Errorf("{{.PkgName}}: failed to assign all query results to {{$tableNameSingular}} slice: %s", err)
}