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package proto
import "github.com/go-faster/errors"
// ColTuple is Tuple column.
//
// Basically it is just a group of columns.
type ColTuple []Column
// Compile-time assertions for ColTuple.
var (
_ ColInput = ColTuple(nil)
_ ColResult = ColTuple(nil)
_ Column = ColTuple(nil)
_ StateEncoder = ColTuple(nil)
_ StateDecoder = ColTuple(nil)
_ Inferable = ColTuple(nil)
_ Preparable = ColTuple(nil)
)
func (c ColTuple) DecodeState(r *Reader) error {
for i, v := range c {
if s, ok := v.(StateDecoder); ok {
if err := s.DecodeState(r); err != nil {
return errors.Wrapf(err, "[%d]", i)
}
}
}
return nil
}
// ColNamed is named column.
// Used in named tuples.
type ColNamed[T any] struct {
ColumnOf[T]
Name string
}
func (c *ColNamed[T]) Infer(t ColumnType) error {
if v, ok := c.ColumnOf.(Inferable); ok {
if err := v.Infer(t); err != nil {
return errors.Wrap(err, "named")
}
}
return nil
}
func (c *ColNamed[T]) Prepare() error {
if v, ok := c.ColumnOf.(Preparable); ok {
if err := v.Prepare(); err != nil {
return errors.Wrap(err, "named")
}
}
return nil
}
func (c ColNamed[T]) DecodeState(r *Reader) error {
if v, ok := c.ColumnOf.(StateDecoder); ok {
if err := v.DecodeState(r); err != nil {
return errors.Wrap(err, "named")
}
}
return nil
}
func (c ColNamed[T]) EncodeState(b *Buffer) {
if v, ok := c.ColumnOf.(StateEncoder); ok {
v.EncodeState(b)
}
}
// Compile-time assertions for ColNamed.
var (
_ ColInput = Named[string]((*ColStr)(nil), "name")
_ ColResult = Named[string]((*ColStr)(nil), "name")
_ Column = Named[string]((*ColStr)(nil), "name")
_ StateEncoder = Named[string]((*ColStr)(nil), "name")
_ StateDecoder = Named[string]((*ColStr)(nil), "name")
_ Inferable = Named[string]((*ColStr)(nil), "name")
_ Preparable = Named[string]((*ColStr)(nil), "name")
)
func Named[T any](data ColumnOf[T], name string) *ColNamed[T] {
return &ColNamed[T]{
ColumnOf: data,
Name: name,
}
}
func (c ColNamed[T]) ColumnName() string {
return c.Name
}
func (c ColNamed[T]) Type() ColumnType {
return ColumnType(c.Name + " " + c.ColumnOf.Type().String())
}
func (c ColTuple) Prepare() error {
for _, v := range c {
if s, ok := v.(Preparable); ok {
if err := s.Prepare(); err != nil {
return errors.Wrap(err, "prepare")
}
}
}
return nil
}
func (c ColTuple) Infer(t ColumnType) error {
for _, v := range c {
if s, ok := v.(Inferable); ok {
if err := s.Infer(t); err != nil {
return errors.Wrap(err, "infer")
}
}
}
return nil
}
func (c ColTuple) EncodeState(b *Buffer) {
for _, v := range c {
if s, ok := v.(StateEncoder); ok {
s.EncodeState(b)
}
}
}
func (c ColTuple) Type() ColumnType {
var types []ColumnType
for _, v := range c {
types = append(types, v.Type())
}
return ColumnTypeTuple.Sub(types...)
}
func (c ColTuple) First() Column {
if len(c) == 0 {
return nil
}
return c[0]
}
func (c ColTuple) Rows() int {
if f := c.First(); f != nil {
return f.Rows()
}
return 0
}
func (c ColTuple) DecodeColumn(r *Reader, rows int) error {
for i, v := range c {
if err := v.DecodeColumn(r, rows); err != nil {
return errors.Wrapf(err, "[%d]", i)
}
}
return nil
}
func (c ColTuple) Reset() {
for _, v := range c {
v.Reset()
}
}
func (c ColTuple) EncodeColumn(b *Buffer) {
for _, v := range c {
v.EncodeColumn(b)
}
}
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