mirror of https://github.com/jackc/pgx.git
Add UUIDArray type
Also change UUID.Set() to convert nil to NULL in order for UUIDArray.Set() to support converting [][]byte slices that contain nil.pull/309/head
Kelsey Francis
parent
f65776f084
commit
1e36edf4b0
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@ -49,6 +49,7 @@ const (
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NumericOID = 1700
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RecordOID = 2249
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UUIDOID = 2950
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UUIDArrayOID = 2951
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JSONBOID = 3802
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)
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@ -223,6 +224,7 @@ func init() {
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"_text": &TextArray{},
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"_timestamp": &TimestampArray{},
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"_timestamptz": &TimestamptzArray{},
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"_uuid": &UUIDArray{},
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"_varchar": &VarcharArray{},
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"aclitem": &ACLItem{},
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"bool": &Bool{},
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@ -14,15 +14,24 @@ type UUID struct {
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}
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func (dst *UUID) Set(src interface{}) error {
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if src == nil {
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*dst = UUID{Status: Null}
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return nil
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}
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switch value := src.(type) {
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case [16]byte:
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*dst = UUID{Bytes: value, Status: Present}
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case []byte:
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if len(value) != 16 {
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return errors.Errorf("[]byte must be 16 bytes to convert to UUID: %d", len(value))
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if value != nil {
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if len(value) != 16 {
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return errors.Errorf("[]byte must be 16 bytes to convert to UUID: %d", len(value))
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}
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*dst = UUID{Status: Present}
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copy(dst.Bytes[:], value)
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} else {
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*dst = UUID{Status: Null}
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}
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*dst = UUID{Status: Present}
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copy(dst.Bytes[:], value)
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case string:
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uuid, err := parseUUID(value)
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if err != nil {
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@ -0,0 +1,355 @@
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package pgtype
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import (
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"database/sql/driver"
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"encoding/binary"
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"github.com/jackc/pgx/pgio"
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"github.com/pkg/errors"
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)
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type UUIDArray struct {
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Elements []UUID
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Dimensions []ArrayDimension
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Status Status
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}
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func (dst *UUIDArray) Set(src interface{}) error {
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if src == nil {
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*dst = UUIDArray{Status: Null}
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return nil
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}
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switch value := src.(type) {
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case [][16]byte:
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if value == nil {
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*dst = UUIDArray{Status: Null}
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} else if len(value) == 0 {
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*dst = UUIDArray{Status: Present}
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} else {
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elements := make([]UUID, len(value))
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for i := range value {
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if err := elements[i].Set(value[i]); err != nil {
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return err
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}
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}
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*dst = UUIDArray{
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Elements: elements,
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Dimensions: []ArrayDimension{{Length: int32(len(elements)), LowerBound: 1}},
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Status: Present,
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}
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}
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case [][]byte:
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if value == nil {
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*dst = UUIDArray{Status: Null}
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} else if len(value) == 0 {
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*dst = UUIDArray{Status: Present}
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} else {
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elements := make([]UUID, len(value))
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for i := range value {
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if err := elements[i].Set(value[i]); err != nil {
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return err
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}
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}
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*dst = UUIDArray{
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Elements: elements,
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Dimensions: []ArrayDimension{{Length: int32(len(elements)), LowerBound: 1}},
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Status: Present,
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}
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}
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case []string:
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if value == nil {
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*dst = UUIDArray{Status: Null}
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} else if len(value) == 0 {
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*dst = UUIDArray{Status: Present}
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} else {
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elements := make([]UUID, len(value))
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for i := range value {
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if err := elements[i].Set(value[i]); err != nil {
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return err
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}
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}
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*dst = UUIDArray{
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Elements: elements,
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Dimensions: []ArrayDimension{{Length: int32(len(elements)), LowerBound: 1}},
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Status: Present,
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}
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}
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default:
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if originalSrc, ok := underlyingPtrType(src); ok {
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return dst.Set(originalSrc)
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}
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return errors.Errorf("cannot convert %v to UUIDArray", value)
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}
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return nil
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}
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func (dst *UUIDArray) Get() interface{} {
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switch dst.Status {
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case Present:
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return dst
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case Null:
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return nil
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default:
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return dst.Status
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}
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}
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func (src *UUIDArray) AssignTo(dst interface{}) error {
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switch src.Status {
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case Present:
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switch v := dst.(type) {
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case *[][16]byte:
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*v = make([][16]byte, len(src.Elements))
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for i := range src.Elements {
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if err := src.Elements[i].AssignTo(&((*v)[i])); 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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case *[][]byte:
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*v = make([][]byte, len(src.Elements))
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for i := range src.Elements {
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if err := src.Elements[i].AssignTo(&((*v)[i])); 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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case *[]string:
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*v = make([]string, len(src.Elements))
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for i := range src.Elements {
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if err := src.Elements[i].AssignTo(&((*v)[i])); 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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default:
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if nextDst, retry := GetAssignToDstType(dst); retry {
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return src.AssignTo(nextDst)
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}
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}
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case Null:
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return NullAssignTo(dst)
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}
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return errors.Errorf("cannot decode %v into %T", src, dst)
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}
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func (dst *UUIDArray) DecodeText(ci *ConnInfo, src []byte) error {
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if src == nil {
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*dst = UUIDArray{Status: Null}
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return nil
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}
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uta, err := ParseUntypedTextArray(string(src))
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if err != nil {
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return err
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}
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var elements []UUID
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if len(uta.Elements) > 0 {
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elements = make([]UUID, len(uta.Elements))
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for i, s := range uta.Elements {
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var elem UUID
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var elemSrc []byte
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if s != "NULL" {
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elemSrc = []byte(s)
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}
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err = elem.DecodeText(ci, elemSrc)
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if err != nil {
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return err
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}
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elements[i] = elem
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}
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}
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*dst = UUIDArray{Elements: elements, Dimensions: uta.Dimensions, Status: Present}
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return nil
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}
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func (dst *UUIDArray) DecodeBinary(ci *ConnInfo, src []byte) error {
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if src == nil {
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*dst = UUIDArray{Status: Null}
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return nil
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}
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var arrayHeader ArrayHeader
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rp, err := arrayHeader.DecodeBinary(ci, src)
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if err != nil {
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return err
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}
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if len(arrayHeader.Dimensions) == 0 {
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*dst = UUIDArray{Dimensions: arrayHeader.Dimensions, Status: Present}
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return nil
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}
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elementCount := arrayHeader.Dimensions[0].Length
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for _, d := range arrayHeader.Dimensions[1:] {
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elementCount *= d.Length
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}
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elements := make([]UUID, elementCount)
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for i := range elements {
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elemLen := int(int32(binary.BigEndian.Uint32(src[rp:])))
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rp += 4
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var elemSrc []byte
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if elemLen >= 0 {
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elemSrc = src[rp : rp+elemLen]
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rp += elemLen
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}
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err = elements[i].DecodeBinary(ci, elemSrc)
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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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*dst = UUIDArray{Elements: elements, Dimensions: arrayHeader.Dimensions, Status: Present}
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return nil
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}
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func (src *UUIDArray) EncodeText(ci *ConnInfo, buf []byte) ([]byte, error) {
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switch src.Status {
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case Null:
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return nil, nil
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case Undefined:
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return nil, errUndefined
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}
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if len(src.Dimensions) == 0 {
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return append(buf, '{', '}'), nil
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}
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buf = EncodeTextArrayDimensions(buf, src.Dimensions)
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// dimElemCounts is the multiples of elements that each array lies on. For
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// example, a single dimension array of length 4 would have a dimElemCounts of
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// [4]. A multi-dimensional array of lengths [3,5,2] would have a
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// dimElemCounts of [30,10,2]. This is used to simplify when to render a '{'
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// or '}'.
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dimElemCounts := make([]int, len(src.Dimensions))
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dimElemCounts[len(src.Dimensions)-1] = int(src.Dimensions[len(src.Dimensions)-1].Length)
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for i := len(src.Dimensions) - 2; i > -1; i-- {
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dimElemCounts[i] = int(src.Dimensions[i].Length) * dimElemCounts[i+1]
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}
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inElemBuf := make([]byte, 0, 32)
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for i, elem := range src.Elements {
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if i > 0 {
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buf = append(buf, ',')
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}
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for _, dec := range dimElemCounts {
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if i%dec == 0 {
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buf = append(buf, '{')
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}
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}
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elemBuf, err := elem.EncodeText(ci, inElemBuf)
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if err != nil {
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return nil, err
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}
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if elemBuf == nil {
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buf = append(buf, `NULL`...)
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} else {
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buf = append(buf, QuoteArrayElementIfNeeded(string(elemBuf))...)
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}
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for _, dec := range dimElemCounts {
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if (i+1)%dec == 0 {
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buf = append(buf, '}')
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}
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}
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}
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return buf, nil
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}
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func (src *UUIDArray) EncodeBinary(ci *ConnInfo, buf []byte) ([]byte, error) {
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switch src.Status {
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case Null:
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return nil, nil
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case Undefined:
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return nil, errUndefined
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}
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arrayHeader := ArrayHeader{
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Dimensions: src.Dimensions,
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}
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if dt, ok := ci.DataTypeForName("uuid"); ok {
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arrayHeader.ElementOID = int32(dt.OID)
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} else {
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return nil, errors.Errorf("unable to find oid for type name %v", "uuid")
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}
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for i := range src.Elements {
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if src.Elements[i].Status == Null {
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arrayHeader.ContainsNull = true
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break
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}
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}
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buf = arrayHeader.EncodeBinary(ci, buf)
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for i := range src.Elements {
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sp := len(buf)
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buf = pgio.AppendInt32(buf, -1)
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elemBuf, err := src.Elements[i].EncodeBinary(ci, buf)
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if err != nil {
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return nil, err
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}
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if elemBuf != nil {
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buf = elemBuf
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pgio.SetInt32(buf[sp:], int32(len(buf[sp:])-4))
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}
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}
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return buf, nil
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}
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// Scan implements the database/sql Scanner interface.
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func (dst *UUIDArray) Scan(src interface{}) error {
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if src == nil {
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return dst.DecodeText(nil, nil)
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}
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switch src := src.(type) {
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case string:
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return dst.DecodeText(nil, []byte(src))
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case []byte:
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srcCopy := make([]byte, len(src))
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copy(srcCopy, src)
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return dst.DecodeText(nil, srcCopy)
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}
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return errors.Errorf("cannot scan %T", src)
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}
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// Value implements the database/sql/driver Valuer interface.
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func (src *UUIDArray) Value() (driver.Value, error) {
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buf, err := src.EncodeText(nil, nil)
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if err != nil {
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return nil, err
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}
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if buf == nil {
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return nil, nil
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}
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return string(buf), nil
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}
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@ -0,0 +1,205 @@
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package pgtype_test
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import (
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"reflect"
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"testing"
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"github.com/jackc/pgx/pgtype"
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"github.com/jackc/pgx/pgtype/testutil"
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)
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func TestUUIDArrayTranscode(t *testing.T) {
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testutil.TestSuccessfulTranscode(t, "uuid[]", []interface{}{
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&pgtype.UUIDArray{
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Elements: nil,
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Dimensions: nil,
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Status: pgtype.Present,
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},
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&pgtype.UUIDArray{
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Elements: []pgtype.UUID{
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{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present},
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{Status: pgtype.Null},
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},
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Dimensions: []pgtype.ArrayDimension{{Length: 2, LowerBound: 1}},
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Status: pgtype.Present,
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},
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&pgtype.UUIDArray{Status: pgtype.Null},
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&pgtype.UUIDArray{
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Elements: []pgtype.UUID{
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{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present},
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{Bytes: [16]byte{16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31}, Status: pgtype.Present},
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{Bytes: [16]byte{32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47}, Status: pgtype.Present},
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{Bytes: [16]byte{48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63}, Status: pgtype.Present},
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{Status: pgtype.Null},
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{Bytes: [16]byte{64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79}, Status: pgtype.Present},
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},
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Dimensions: []pgtype.ArrayDimension{{Length: 3, LowerBound: 1}, {Length: 2, LowerBound: 1}},
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Status: pgtype.Present,
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},
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&pgtype.UUIDArray{
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Elements: []pgtype.UUID{
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{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present},
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{Bytes: [16]byte{16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31}, Status: pgtype.Present},
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{Bytes: [16]byte{32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47}, Status: pgtype.Present},
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{Bytes: [16]byte{48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63}, Status: pgtype.Present},
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},
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Dimensions: []pgtype.ArrayDimension{
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{Length: 2, LowerBound: 4},
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{Length: 2, LowerBound: 2},
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},
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Status: pgtype.Present,
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},
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})
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}
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func TestUUIDArraySet(t *testing.T) {
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successfulTests := []struct {
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source interface{}
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result pgtype.UUIDArray
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}{
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{
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source: nil,
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result: pgtype.UUIDArray{Status: pgtype.Null},
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},
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{
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source: [][16]byte{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}},
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result: pgtype.UUIDArray{
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Elements: []pgtype.UUID{{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present}},
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Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
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Status: pgtype.Present},
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},
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{
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source: [][16]byte{},
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result: pgtype.UUIDArray{Status: pgtype.Present},
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},
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{
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source: ([][16]byte)(nil),
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result: pgtype.UUIDArray{Status: pgtype.Null},
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},
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{
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source: [][]byte{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}},
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result: pgtype.UUIDArray{
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Elements: []pgtype.UUID{{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present}},
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Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
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Status: pgtype.Present},
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},
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{
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source: [][]byte{
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{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
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{16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31},
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nil,
|
||||
{32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47},
|
||||
},
|
||||
result: pgtype.UUIDArray{
|
||||
Elements: []pgtype.UUID{
|
||||
{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present},
|
||||
{Bytes: [16]byte{16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31}, Status: pgtype.Present},
|
||||
{Status: pgtype.Null},
|
||||
{Bytes: [16]byte{32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47}, Status: pgtype.Present},
|
||||
},
|
||||
Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 4}},
|
||||
Status: pgtype.Present},
|
||||
},
|
||||
{
|
||||
source: [][]byte{},
|
||||
result: pgtype.UUIDArray{Status: pgtype.Present},
|
||||
},
|
||||
{
|
||||
source: ([][]byte)(nil),
|
||||
result: pgtype.UUIDArray{Status: pgtype.Null},
|
||||
},
|
||||
{
|
||||
source: []string{"00010203-0405-0607-0809-0a0b0c0d0e0f"},
|
||||
result: pgtype.UUIDArray{
|
||||
Elements: []pgtype.UUID{{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present}},
|
||||
Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
|
||||
Status: pgtype.Present},
|
||||
},
|
||||
{
|
||||
source: []string{},
|
||||
result: pgtype.UUIDArray{Status: pgtype.Present},
|
||||
},
|
||||
{
|
||||
source: ([]string)(nil),
|
||||
result: pgtype.UUIDArray{Status: pgtype.Null},
|
||||
},
|
||||
}
|
||||
|
||||
for i, tt := range successfulTests {
|
||||
var r pgtype.UUIDArray
|
||||
err := r.Set(tt.source)
|
||||
if err != nil {
|
||||
t.Errorf("%d: %v", i, err)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(r, tt.result) {
|
||||
t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestUUIDArrayAssignTo(t *testing.T) {
|
||||
var byteArraySlice [][16]byte
|
||||
var byteSliceSlice [][]byte
|
||||
var stringSlice []string
|
||||
|
||||
simpleTests := []struct {
|
||||
src pgtype.UUIDArray
|
||||
dst interface{}
|
||||
expected interface{}
|
||||
}{
|
||||
{
|
||||
src: pgtype.UUIDArray{
|
||||
Elements: []pgtype.UUID{{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present}},
|
||||
Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
|
||||
Status: pgtype.Present,
|
||||
},
|
||||
dst: &byteArraySlice,
|
||||
expected: [][16]byte{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}},
|
||||
},
|
||||
{
|
||||
src: pgtype.UUIDArray{Status: pgtype.Null},
|
||||
dst: &byteArraySlice,
|
||||
expected: ([][16]byte)(nil),
|
||||
},
|
||||
{
|
||||
src: pgtype.UUIDArray{
|
||||
Elements: []pgtype.UUID{{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present}},
|
||||
Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
|
||||
Status: pgtype.Present,
|
||||
},
|
||||
dst: &byteSliceSlice,
|
||||
expected: [][]byte{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}},
|
||||
},
|
||||
{
|
||||
src: pgtype.UUIDArray{Status: pgtype.Null},
|
||||
dst: &byteSliceSlice,
|
||||
expected: ([][]byte)(nil),
|
||||
},
|
||||
{
|
||||
src: pgtype.UUIDArray{
|
||||
Elements: []pgtype.UUID{{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present}},
|
||||
Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
|
||||
Status: pgtype.Present,
|
||||
},
|
||||
dst: &stringSlice,
|
||||
expected: []string{"00010203-0405-0607-0809-0a0b0c0d0e0f"},
|
||||
},
|
||||
{
|
||||
src: pgtype.UUIDArray{Status: pgtype.Null},
|
||||
dst: &stringSlice,
|
||||
expected: ([]string)(nil),
|
||||
},
|
||||
}
|
||||
|
||||
for i, tt := range simpleTests {
|
||||
err := tt.src.AssignTo(tt.dst)
|
||||
if err != nil {
|
||||
t.Errorf("%d: %v", i, err)
|
||||
}
|
||||
|
||||
if dst := reflect.ValueOf(tt.dst).Elem().Interface(); !reflect.DeepEqual(dst, tt.expected) {
|
||||
t.Errorf("%d: expected %v to assign %v, but result was %v", i, tt.src, tt.expected, dst)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -20,6 +20,10 @@ func TestUUIDSet(t *testing.T) {
|
|||
source interface{}
|
||||
result pgtype.UUID
|
||||
}{
|
||||
{
|
||||
source: nil,
|
||||
result: pgtype.UUID{Status: pgtype.Null},
|
||||
},
|
||||
{
|
||||
source: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
|
||||
result: pgtype.UUID{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present},
|
||||
|
|
@ -28,6 +32,10 @@ func TestUUIDSet(t *testing.T) {
|
|||
source: []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
|
||||
result: pgtype.UUID{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present},
|
||||
},
|
||||
{
|
||||
source: ([]byte)(nil),
|
||||
result: pgtype.UUID{Status: pgtype.Null},
|
||||
},
|
||||
{
|
||||
source: "00010203-0405-0607-0809-0a0b0c0d0e0f",
|
||||
result: pgtype.UUID{Bytes: [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, Status: pgtype.Present},
|
||||
|
|
|
|||
Loading…
Reference in New Issue