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Copy pathpgdb.go
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212 lines (189 loc) · 5.22 KB
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package gosql
import (
"context"
"fmt"
"reflect"
"strings"
"sync"
"github.com/jackc/pgx/v4/pgxpool"
)
type PGConn struct {
*pgxpool.Pool
conf string
Ctx context.Context
sc *Sqlconfig
mu *sync.RWMutex
debug bool
}
func (d *PGConn) InsertInterfaceWithID(dest interface{}, cmd string, args ...interface{}) Result {
// $key 和 $value 固定位置固定值
// db.InsertInterfaceWithID(&value, "insert into test($key) values($value)")
res := Result{
LastInsertIds: make([]int64, 0),
}
typ := reflect.TypeOf(dest)
value := reflect.ValueOf(dest)
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
value = value.Elem()
}
if typ.Kind() == reflect.Struct {
return d.insertInterface(dest, cmd, args...)
}
if typ.Kind() == reflect.Slice {
// 如果是切片， 那么每个值都做一次处理
length := value.Len()
if length == 1 {
return d.insertInterface(dest, cmd, args...)
}
for i := 0; i < length; i++ {
result := d.insertInterface(value.Index(i).Interface(), cmd, args...)
res.Sql += ";" + result.Sql
if result.Err != nil {
return result
}
res.LastInsertIds = append(res.LastInsertIds, result.LastInsertId)
}
} else {
res.Err = ErrNotSupport
}
return res
}
func (d *PGConn) insertInterface(dest interface{}, cmd string, args ...interface{}) Result {
// 插入到args之前 dest 是struct或切片的指针
newcmd, newargs, err := insertInterfaceSql(dest, cmd, args...)
if err != nil {
return Result{Err: err}
}
return d.Insert(newcmd, newargs...)
}
func (d *PGConn) insertWithoutInterface(dest interface{}, cmd string, args ...interface{}) Result {
// 插入到args之前 dest 是struct或切片的指针
newcmd, newargs, err := insertInterfaceSql(dest, cmd, args...)
if err != nil {
return Result{Err: err}
}
return d.Insert(newcmd, newargs...)
}
func (d *PGConn) Insert(cmd string, args ...interface{}) Result {
res := Result{
Sql: ToSql(cmd, args...),
}
for i := 1; i <= len(args); i++ {
cmd = strings.Replace(cmd, "?", fmt.Sprintf("$%d", i), 1)
}
result := d.QueryRow(d.Ctx, cmd, args...)
err := result.Scan(&res.LastInsertId)
if err != nil {
res.Err = err
return res
}
return res
}
func (d *PGConn) InsertWithoutId(cmd string, args ...interface{}) Result {
res := Result{
Sql: ToSql(cmd, args...),
}
for i := 1; i <= len(args); i++ {
cmd = strings.Replace(cmd, "?", fmt.Sprintf("$%d", i), 1)
}
result, err := d.Exec(d.Ctx, cmd, args...)
res.RowsAffected = result.RowsAffected()
res.Err = err
return res
}
func (d *PGConn) UpdateInterface(dest interface{}, cmd string, args ...interface{}) Result {
newcmd, newargs, err := updateInterfaceSql(dest, cmd, args...)
if err != nil {
return Result{Err: err}
}
return d.Update(newcmd, newargs...)
}
func (d *PGConn) Update(cmd string, args ...interface{}) Result {
res := Result{}
if d.debug {
res.Sql = ToPGSql(cmd, args...)
}
for i := 1; i <= len(args); i++ {
cmd = strings.Replace(cmd, "?", fmt.Sprintf("$%d", i), 1)
}
tags, err := d.Exec(d.Ctx, cmd, args...)
if err != nil {
res.Err = err
return res
}
res.RowsAffected, res.Err = tags.RowsAffected(), err
return res
}
func (d *PGConn) InsertInterfaceWithoutID(dest interface{}, cmd string, args ...interface{}) Result {
// $key 和 $value 固定位置固定值
// ID 自增的必须设置 default
// db.InsertInterfaceWithoutID(&value, "insert into test($key) values($value)")
res := Result{}
typ := reflect.TypeOf(dest)
value := reflect.ValueOf(dest)
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
value = value.Elem()
}
if typ.Kind() == reflect.Struct {
return d.insertWithoutInterface(dest, cmd, args...)
}
if typ.Kind() == reflect.Slice {
// 如果是切片， 那么每个值都做一次处理
length := value.Len()
if length == 1 {
return d.insertWithoutInterface(dest, cmd, args...)
}
arguments := make([]interface{}, 0)
for i := 0; i < length; i++ {
newcmd, newargs, err := insertInterfaceSql(value.Index(i).Interface(), cmd, args...)
if err != nil {
res.Err = err
return res
}
cmd = newcmd
arguments = append(arguments, newargs...)
}
return d.InsertMany(cmd, arguments...)
} else {
res.Err = ErrNotSupport
}
return res
}
func (d *PGConn) InsertMany(cmd string, args ...interface{}) Result {
// sql: insert into test(id, name) values(?,?) args: interface{}... 1,'t1', 2, 't2', 3, 't3'
// 每次返回的是第一次插入的id
if args == nil {
return d.InsertWithoutId(cmd)
}
newcmd, err := formatSql(cmd, args...)
if err != nil {
return Result{Err: err}
}
return d.InsertWithoutId(newcmd, args...)
}
func (d *PGConn) Select(dest interface{}, cmd string, args ...interface{}) Result {
// db.Select(&value, "select * from test")
// 传入切片的地址， 根据tag 的 db 自动补充，
// 最求性能建议还是使用 GetRows or GetOne
for i := 1; i <= len(args); i++ {
cmd = strings.Replace(cmd, "?", fmt.Sprintf("$%d", i), 1)
}
res := Result{}
if d.debug {
res.Sql = ToPGSql(cmd, args...)
}
rows, err := d.Query(d.Ctx, cmd, args...)
if err != nil {
res.Err = err
return res
}
defer rows.Close()
// 需要设置的值
res.Err = pgfill(dest, rows)
return res
}
func (d *PGConn) Delete(cmd string, args ...interface{}) Result {
return d.Update(cmd, args...)
}