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proto3.go
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proto3.go
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// Copyright 2015, Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proto
import (
"github.com/youtube/vitess/go/sqltypes"
pbb "github.com/youtube/vitess/go/vt/proto/binlogdata"
pbq "github.com/youtube/vitess/go/vt/proto/query"
)
// This file contains the proto3 conversion functions for the structures
// defined here.
// CharsetToProto converts a Charset to a proto3
func CharsetToProto(c *Charset) *pbb.Charset {
if c == nil {
return nil
}
return &pbb.Charset{
Client: int32(c.Client),
Conn: int32(c.Conn),
Server: int32(c.Server),
}
}
// ProtoToCharset converts a proto to a Charset
func ProtoToCharset(c *pbb.Charset) *Charset {
if c == nil {
return nil
}
return &Charset{
Client: int(c.Client),
Conn: int(c.Conn),
Server: int(c.Server),
}
}
// FieldsToProto3 converts an internal []Field to the proto3 version
func FieldsToProto3(f []Field) []*pbq.Field {
if len(f) == 0 {
return nil
}
result := make([]*pbq.Field, len(f))
for i, f := range f {
result[i] = &pbq.Field{
Name: f.Name,
Type: pbq.Field_Type(f.Type),
Flags: int64(f.Flags),
}
}
return result
}
// Proto3ToFields converts a proto3 []Fields to an internal data structure.
func Proto3ToFields(f []*pbq.Field) []Field {
if len(f) == 0 {
return nil
}
result := make([]Field, len(f))
for i, f := range f {
result[i].Name = f.Name
result[i].Type = int64(f.Type)
result[i].Flags = int64(f.Flags)
}
return result
}
// RowsToProto3 converts an internal [][]sqltypes.Value to the proto3 version
func RowsToProto3(rows [][]sqltypes.Value) []*pbq.Row {
if len(rows) == 0 {
return nil
}
result := make([]*pbq.Row, len(rows))
for i, r := range rows {
result[i] = &pbq.Row{
Values: make([][]byte, len(r)),
}
for j, c := range r {
result[i].Values[j] = c.Raw()
}
}
return result
}
// Proto3ToRows converts a proto3 []Row to an internal data structure.
func Proto3ToRows(rows []*pbq.Row) [][]sqltypes.Value {
if len(rows) == 0 {
return [][]sqltypes.Value{}
}
result := make([][]sqltypes.Value, len(rows))
for i, r := range rows {
result[i] = make([]sqltypes.Value, len(r.Values))
for j, c := range r.Values {
if c == nil {
result[i][j] = sqltypes.NULL
} else {
result[i][j] = sqltypes.MakeString(c)
}
}
}
return result
}
// QueryResultToProto3 converts an internal QueryResult to the proto3 version
func QueryResultToProto3(qr *QueryResult) *pbq.QueryResult {
if qr == nil {
return nil
}
return &pbq.QueryResult{
Fields: FieldsToProto3(qr.Fields),
RowsAffected: qr.RowsAffected,
InsertId: qr.InsertId,
Rows: RowsToProto3(qr.Rows),
}
}
// Proto3ToQueryResult converts a proto3 QueryResult to an internal data structure.
func Proto3ToQueryResult(qr *pbq.QueryResult) *QueryResult {
if qr == nil {
return nil
}
return &QueryResult{
Fields: Proto3ToFields(qr.Fields),
RowsAffected: qr.RowsAffected,
InsertId: qr.InsertId,
Rows: Proto3ToRows(qr.Rows),
}
}
// Proto3ToQueryResults converts an array os proto3 QueryResult to an
// internal data structure.
func Proto3ToQueryResults(qr []*pbq.QueryResult) []QueryResult {
if len(qr) == 0 {
return nil
}
result := make([]QueryResult, len(qr))
for i, q := range qr {
result[i] = *Proto3ToQueryResult(q)
}
return result
}