feat: upgrade pgtype to v5, exposing the parameter Scan method

command.go

@@ -474,7 +474,7 @@ func (srv *Server) readParameters(ctx context.Context, reader *buffer.Reader) ([
 			format = formats[i]
 		}
 
-		parameters[i] = NewParameter(format, value)
+		parameters[i] = NewParameter(TypeMap(ctx), format, value)
 	}
 
 	// NOTE: Read the total amount of result-column format that will be

conn.go

@@ -3,31 +3,31 @@ package wire
 import (
 	"context"
 
-	"github.com/jackc/pgtype"
+	"github.com/jackc/pgx/v5/pgtype"
 )
 
 type ctxKey int
 
 const (
-	ctxTypeInfo ctxKey = iota
+	ctxTypeMap ctxKey = iota
 	ctxClientMetadata
 	ctxServerMetadata
 )
 
 // setTypeInfo constructs a new Postgres type connection info for the given value
-func setTypeInfo(ctx context.Context, info *pgtype.ConnInfo) context.Context {
-	return context.WithValue(ctx, ctxTypeInfo, info)
+func setTypeInfo(ctx context.Context, info *pgtype.Map) context.Context {
+	return context.WithValue(ctx, ctxTypeMap, info)
 }
 
-// TypeInfo returns the Postgres type connection info if it has been set inside
+// TypeMap returns the Postgres type connection info if it has been set inside
 // the given context.
-func TypeInfo(ctx context.Context) *pgtype.ConnInfo {
-	val := ctx.Value(ctxTypeInfo)
+func TypeMap(ctx context.Context) *pgtype.Map {
+	val := ctx.Value(ctxTypeMap)
 	if val == nil {
 		return nil
 	}
 
-	return val.(*pgtype.ConnInfo)
+	return val.(*pgtype.Map)
 }
 
 // Parameters represents a parameters collection of parameter status keys and

format.go

@@ -1,39 +1,8 @@
 package wire
 
-import (
-	"fmt"
-
-	"github.com/jackc/pgtype"
-)
-
 // FormatCode represents the encoding format of a given column
 type FormatCode int16
 
-// Encoder returns the format encoder for the given data type
-func (code FormatCode) Encoder(t *pgtype.DataType) FormatEncoder {
-	switch code {
-	case TextFormat:
-		return t.Value.(pgtype.TextEncoder).EncodeText
-	case BinaryFormat:
-		return t.Value.(pgtype.BinaryEncoder).EncodeBinary
-	default:
-		return unknownEncoderfunc(fmt.Errorf("unknown format encoder %d", code))
-	}
-}
-
-// FormatEncoder represents a format code wire encoder.
-// FormatEncoder should append the text format of self to buf. If self is the
-// SQL value NULL then append nothing and return (nil, nil). The caller of
-// FormatEncoder is responsible for writing the correct NULL value or the
-// length of the data written.
-type FormatEncoder func(ci *pgtype.ConnInfo, buf []byte) (newBuf []byte, err error)
-
-func unknownEncoderfunc(err error) FormatEncoder {
-	return func(ci *pgtype.ConnInfo, buf []byte) (newBuf []byte, err error) {
-		return nil, err
-	}
-}
-
 const (
 	// TextFormat is the default, text format.
 	TextFormat FormatCode = 0

go.mod

@@ -4,11 +4,9 @@ go 1.21
 
 require (
 	github.com/golangci/golangci-lint v1.54.2
-	github.com/jackc/pgtype v1.8.1
 	github.com/jackc/pgx/v5 v5.0.3
 	github.com/lib/pq v1.10.9
 	github.com/neilotoole/slogt v1.1.0
-	github.com/shopspring/decimal v1.2.0
 	github.com/stretchr/testify v1.8.4
 	golang.org/x/tools v0.12.0
 )
@@ -86,7 +84,6 @@ require (
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/hexops/gotextdiff v1.0.3 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/jackc/pgio v1.0.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
 	github.com/jgautheron/goconst v1.5.1 // indirect