diff options
Diffstat (limited to 'plan.go')
| -rw-r--r-- | plan.go | 9 |
1 files changed, 8 insertions, 1 deletions
@@ -21,8 +21,10 @@ type plan struct { PrimaryKeyColumnNames []string // from info.PrimaryKeyIs marker (if any) AutoColumnNames []string // subset of AllColumnNames where field has `,auto` marker - // Argument for reflect.Value.FieldByIndex() for each column name. + // Field index (i.e. argument for reflect.Value.FieldByIndex()) for each column name. IndexByColumnName map[string][]int + // Indexes of pointer-typed fields that need to be initialized before scanning into this type. + IndexesOfTransparentPointerStructs [][]int // In dialects with UsesLastInsertID() == true, whether the ID column must be written with reflect.Value.SetInt() or reflect.Value.SetUint(). FillIDWithSetUint bool @@ -85,6 +87,11 @@ func buildPlan(t reflect.Type, dialect Dialect, opts planOpts) (plan, error) { if field.Type.Kind() == reflect.Struct || (field.Type.Kind() == reflect.Pointer && field.Type.Elem().Kind() == reflect.Struct) { if field.Tag.Get("db") == "" { indexesOfUnusedTransparentStructs = append(indexesOfUnusedTransparentStructs, field.Index) + if field.Type.Kind() == reflect.Pointer { + // remember that, when scanning into a record of type `t`, we need to write a non-nil zeroed struct into this field + // to enable taking an address of its mapped member fields + p.IndexesOfTransparentPointerStructs = append(p.IndexesOfTransparentPointerStructs, field.Index) + } continue } indexesOfOpaqueStructs = append(indexesOfOpaqueStructs, field.Index) |