mirror of https://github.com/jackc/pgx.git
Remove BinaryEncoder and TextEncoder
Jack Christensen
parent
3a90c6c879
commit
4cf6dc9447
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@ -5,7 +5,6 @@ import (
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"fmt"
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"os"
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"regexp"
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"strconv"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgtype"
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@ -15,52 +14,26 @@ var pointRegexp *regexp.Regexp = regexp.MustCompile(`^\((.*),(.*)\)$`)
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// Point represents a point that may be null.
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type Point struct {
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X, Y float64 // Coordinates of point
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X, Y float32 // Coordinates of point
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Valid bool
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}
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func (dst *Point) Set(src interface{}) error {
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return fmt.Errorf("cannot convert %v to Point", src)
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}
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func (dst *Point) Get() interface{} {
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if !dst.Valid {
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return nil
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func (p *Point) ScanPoint(v pgtype.Point) error {
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*p = Point{
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X: float32(v.P.X),
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Y: float32(v.P.Y),
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Valid: v.Valid,
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}
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return dst
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}
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func (src *Point) AssignTo(dst interface{}) error {
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return fmt.Errorf("cannot assign %v to %T", src, dst)
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}
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func (dst *Point) DecodeText(ci *pgtype.ConnInfo, src []byte) error {
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if src == nil {
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*dst = Point{}
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return nil
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}
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s := string(src)
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match := pointRegexp.FindStringSubmatch(s)
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if match == nil {
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return fmt.Errorf("Received invalid point: %v", s)
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}
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x, err := strconv.ParseFloat(match[1], 64)
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if err != nil {
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return fmt.Errorf("Received invalid point: %v", s)
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}
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y, err := strconv.ParseFloat(match[2], 64)
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if err != nil {
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return fmt.Errorf("Received invalid point: %v", s)
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}
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*dst = Point{X: x, Y: y, Valid: true}
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return nil
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}
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func (p Point) PointValue() (pgtype.Point, error) {
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return pgtype.Point{
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P: pgtype.Vec2{X: float64(p.X), Y: float64(p.Y)},
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Valid: true,
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}, nil
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}
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func (src *Point) String() string {
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if !src.Valid {
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return "null point"
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@ -85,13 +58,6 @@ func Example_CustomType() {
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return
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}
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// Override registered handler for point
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conn.ConnInfo().RegisterDataType(pgtype.DataType{
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Value: &Point{},
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Name: "point",
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OID: 600,
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})
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p := &Point{}
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err = conn.QueryRow(context.Background(), "select null::point").Scan(p)
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if err != nil {
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@ -172,20 +172,6 @@ type Codec interface {
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DecodeValue(ci *ConnInfo, oid uint32, format int16, src []byte) (interface{}, error)
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}
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type BinaryDecoder interface {
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// DecodeBinary decodes src into BinaryDecoder. If src is nil then the
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// original SQL value is NULL. BinaryDecoder takes ownership of src. The
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// caller MUST not use it again.
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DecodeBinary(ci *ConnInfo, src []byte) error
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}
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type TextDecoder interface {
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// DecodeText decodes src into TextDecoder. If src is nil then the original
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// SQL value is NULL. TextDecoder takes ownership of src. The caller MUST not
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// use it again.
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DecodeText(ci *ConnInfo, src []byte) error
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}
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type nullAssignmentError struct {
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dst interface{}
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}
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@ -197,9 +183,6 @@ func (e *nullAssignmentError) Error() string {
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type DataType struct {
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Value Value
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textDecoder TextDecoder
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binaryDecoder BinaryDecoder
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Codec Codec
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Name string
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@ -384,14 +367,6 @@ func (ci *ConnInfo) RegisterDataType(t DataType) {
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ci.oidToFormatCode[t.OID] = formatCode
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}
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if d, ok := t.Value.(TextDecoder); ok {
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t.textDecoder = d
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}
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if d, ok := t.Value.(BinaryDecoder); ok {
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t.binaryDecoder = d
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}
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ci.reflectTypeToDataType = nil // Invalidated by type registration
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}
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@ -476,69 +451,6 @@ func (scanPlanDstResultDecoder) Scan(ci *ConnInfo, oid uint32, formatCode int16,
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return newPlan.Scan(ci, oid, formatCode, src, dst)
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}
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type scanPlanDstBinaryDecoder struct{}
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func (scanPlanDstBinaryDecoder) Scan(ci *ConnInfo, oid uint32, formatCode int16, src []byte, dst interface{}) error {
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if d, ok := (dst).(BinaryDecoder); ok {
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return d.DecodeBinary(ci, src)
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}
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newPlan := ci.PlanScan(oid, formatCode, dst)
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return newPlan.Scan(ci, oid, formatCode, src, dst)
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}
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type scanPlanDstTextDecoder struct{}
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func (plan scanPlanDstTextDecoder) Scan(ci *ConnInfo, oid uint32, formatCode int16, src []byte, dst interface{}) error {
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if d, ok := (dst).(TextDecoder); ok {
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return d.DecodeText(ci, src)
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}
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newPlan := ci.PlanScan(oid, formatCode, dst)
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return newPlan.Scan(ci, oid, formatCode, src, dst)
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}
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type scanPlanDataTypeAssignTo DataType
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func (plan *scanPlanDataTypeAssignTo) Scan(ci *ConnInfo, oid uint32, formatCode int16, src []byte, dst interface{}) error {
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dt := (*DataType)(plan)
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var err error
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switch formatCode {
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case BinaryFormatCode:
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if dt.binaryDecoder == nil {
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return fmt.Errorf("dt.binaryDecoder is nil")
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}
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err = dt.binaryDecoder.DecodeBinary(ci, src)
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case TextFormatCode:
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if dt.textDecoder == nil {
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return fmt.Errorf("dt.textDecoder is nil")
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}
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err = dt.textDecoder.DecodeText(ci, src)
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}
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if err != nil {
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return err
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}
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assignToErr := dt.Value.AssignTo(dst)
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if assignToErr == nil {
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return nil
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}
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if dstPtr, ok := dst.(*interface{}); ok {
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*dstPtr = dt.Value.Get()
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return nil
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}
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// assignToErr might have failed because the type of destination has changed
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newPlan := ci.PlanScan(oid, formatCode, dst)
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if newPlan, sameType := newPlan.(*scanPlanDataTypeAssignTo); !sameType {
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return newPlan.Scan(ci, oid, formatCode, src, dst)
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}
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return assignToErr
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}
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type scanPlanCodecSQLScanner struct{ c Codec }
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func (plan *scanPlanCodecSQLScanner) Scan(ci *ConnInfo, oid uint32, formatCode int16, src []byte, dst interface{}) error {
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@ -1086,8 +998,6 @@ func (ci *ConnInfo) PlanScan(oid uint32, formatCode int16, dst interface{}) Scan
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case ByteaOID, TextOID, VarcharOID, JSONOID:
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return scanPlanBinaryBytes{}
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}
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case BinaryDecoder:
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return scanPlanDstBinaryDecoder{}
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}
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case TextFormatCode:
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switch dst.(type) {
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@ -1097,8 +1007,6 @@ func (ci *ConnInfo) PlanScan(oid uint32, formatCode int16, dst interface{}) Scan
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if oid != ByteaOID {
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return scanPlanBinaryBytes{}
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}
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case TextDecoder:
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return scanPlanDstTextDecoder{}
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case TextScanner:
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return scanPlanTextAnyToTextScanner{}
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}
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@ -159,6 +159,7 @@ func (ct *pgCustomType) DecodeText(ci *pgtype.ConnInfo, buf []byte) error {
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}
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func TestConnInfoScanUnregisteredOIDToCustomType(t *testing.T) {
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t.Skip("TODO - unskip later in v5") // may no longer be relevent
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unregisteredOID := uint32(999999)
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ci := pgtype.NewConnInfo()
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27
rows.go
27
rows.go
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@ -247,32 +247,13 @@ func (rows *connRows) Values() ([]interface{}, error) {
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if dt, ok := rows.connInfo.DataTypeForOID(fd.DataTypeOID); ok {
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if dt.Value != nil {
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value := dt.Value
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switch fd.Format {
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case TextFormatCode:
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if decoder, ok := value.(pgtype.TextDecoder); ok {
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err := decoder.DecodeText(rows.connInfo, buf)
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if err != nil {
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rows.fatal(err)
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}
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values = append(values, decoder.(pgtype.Value).Get())
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} else {
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values = append(values, string(buf))
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}
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values = append(values, string(buf))
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case BinaryFormatCode:
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if decoder, ok := value.(pgtype.BinaryDecoder); ok {
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err := decoder.DecodeBinary(rows.connInfo, buf)
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if err != nil {
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rows.fatal(err)
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}
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values = append(values, value.Get())
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} else {
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newBuf := make([]byte, len(buf))
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copy(newBuf, buf)
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values = append(values, newBuf)
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}
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newBuf := make([]byte, len(buf))
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copy(newBuf, buf)
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values = append(values, newBuf)
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default:
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rows.fatal(errors.New("Unknown format code"))
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}
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