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package gorose
import (
"errors"
"fmt"
"github.com/gohouse/t"
"reflect"
)
// Map ...
type Map t.MapStringT
// Data ...
type Data map[string]interface{}
//Paginate
type Paginate struct {
Total int64 `json:"total",gorose:"total" :"total"`
PerPage int `json:"per_page",gorose:"per_page" :"per_page"`
CurrentPage int `json:"current_page",gorose:"current_page" :"current_page"`
LastPage int `json:"last_page",gorose:"last_page" :"last_page"`
FirstPageUrl int64 `json:"first_page_url",gorose:"first_page_url" :"first_page_url"`
LastPageUrl int `json:"last_page_url",gorose:"last_page_url" :"last_page_url"`
NextPageUrl interface{} `json:"next_page_url",gorose:"next_page_url" :"next_page_url"`
PrevPageUrl interface{} `json:"prev_page_url",gorose:"prev_page_url" :"prev_page_url"`
Data []Data `json:"data",gorose:"data" :"data"`
}
// BindType ...
type BindType int
const (
// OBJECT_STRUCT 结构体 一条数据 (struct)
OBJECT_STRUCT BindType = iota
// OBJECT_STRUCT_SLICE 结构体 多条数据 ([]struct)
OBJECT_STRUCT_SLICE
// OBJECT_MAP map 一条数据 (map[string]interface{})
OBJECT_MAP
// OBJECT_MAP_SLICE map 多条数据 ([]map[string]interface{})
OBJECT_MAP_SLICE
// OBJECT_STRING 非结构体 表名字符串 ("users")
OBJECT_STRING
// OBJECT_MAP_T map 一条数据 (map[string]t.Type)
OBJECT_MAP_T
// OBJECT_MAP_SLICE_T map 多条数据 ([]map[string]t.Type)
OBJECT_MAP_SLICE_T
// OBJECT_NIL 默认没有传入任何绑定对象,一般用于query直接返回
OBJECT_NIL
)
// BindString ...
var BindString = map[BindType]string{
OBJECT_STRUCT: "OBJECT_STRUCT",
OBJECT_STRUCT_SLICE: "OBJECT_STRUCT_SLICE",
OBJECT_MAP: "OBJECT_MAP",
OBJECT_MAP_SLICE: "OBJECT_MAP_SLICE",
OBJECT_STRING: "OBJECT_STRING",
OBJECT_MAP_T: "OBJECT_MAP_T",
OBJECT_MAP_SLICE_T: "OBJECT_MAP_SLICE_T",
OBJECT_NIL: "OBJECT_NIL",
}
// BindType.String ...
func (b BindType) String() string {
return BindString[b]
}
// Binder ...
type Binder struct {
// Bind是指传入的对象 [slice]map,[slice]struct
// 传入的原始对象
BindOrigin interface{}
//BindOriginTableName []string
// 解析出来的对象名字, 或者指定的method(TableName)获取到的名字
BindName string
// 一条结果的反射对象
BindResult interface{}
// 多条
BindResultSlice reflect.Value
// 传入结构体解析出来的字段
BindFields []string
// 传入的对象类型判定
BindType BindType
// 出入传入得是非slice对象, 则只需要取一条, 取多了也是浪费
BindLimit int
BindPrefix string
// 多条map结果,传入的是string table时
BindAll []Data
}
var _ IBinder = &Binder{}
// NewBinder ...
func NewBinder(o ...interface{}) *Binder {
var binder = new(Binder)
if len(o) > 0 {
binder.SetBindOrigin(o[0])
} else {
binder.BindType = OBJECT_NIL
}
return binder
}
// BindParse ...
func (o *Binder) BindParse(prefix string) error {
if o.GetBindOrigin() == nil {
return nil
}
var BindName string
switch o.GetBindOrigin().(type) {
case string: // 直接传入的是表名
o.SetBindType(OBJECT_STRING)
BindName = o.GetBindOrigin().(string)
//o.SetBindAll([]Map{})
// 传入的是struct或切片
default:
// 清空字段值,避免手动传入字段污染struct字段
o.SetBindFields([]string{})
// make sure dst is an appropriate type
dstVal := reflect.ValueOf(o.GetBindOrigin())
sliceVal := reflect.Indirect(dstVal)
switch sliceVal.Kind() {
case reflect.Struct: // struct
o.SetBindType(OBJECT_STRUCT)
BindName = sliceVal.Type().Name()
o.SetBindResult(o.GetBindOrigin())
//// 默认只查一条
//o.SetBindLimit(1)
// 解析出字段
o.parseFields()
// 是否设置了表名
switch dstVal.Kind() {
case reflect.Ptr, reflect.Struct:
if tn := dstVal.MethodByName("TableName"); tn.IsValid() {
BindName = tn.Call(nil)[0].String()
}
default:
return errors.New("传入的对象有误,示例:var user User,传入 &user{}")
}
case reflect.Map: // map
o.SetBindType(OBJECT_MAP)
//// 默认只查一条
//o.SetBindLimit(1)
//
o.SetBindResult(o.GetBindOrigin())
//TODO 检查map的值类型, 是否是t.Type
if sliceVal.Type().Elem() == reflect.ValueOf(map[string]t.Type{}).Type().Elem() {
o.SetBindType(OBJECT_MAP_T)
}
// 是否设置了表名
if dstVal.Kind() != reflect.Ptr {
return errors.New("传入的不是map指针,如:var user gorose.Map,传入 &user{}")
}
if tn := dstVal.MethodByName("TableName"); tn.IsValid() {
BindName = tn.Call(nil)[0].String()
}
case reflect.Slice: // []struct,[]map
eltType := sliceVal.Type().Elem()
switch eltType.Kind() {
case reflect.Map:
o.SetBindType(OBJECT_MAP_SLICE)
o.SetBindResult(reflect.MakeMap(eltType).Interface())
o.SetBindResultSlice(sliceVal)
//o.SetBindResultSlice(reflect.MakeSlice(sliceVal.Type(),0,0))
//TODO 检查map的值类型, 是否是t.Type
if eltType.Elem() == reflect.ValueOf(map[string]t.Type{}).Type().Elem() {
o.SetBindType(OBJECT_MAP_SLICE_T)
}
if dstVal.Kind() != reflect.Ptr {
return errors.New("传入的不是map指针,如:var user gorose.Map,传入 &user{}")
}
// 检查设置表名
r2val := reflect.New(eltType)
if tn := r2val.MethodByName("TableName"); tn.IsValid() {
BindName = tn.Call(nil)[0].String()
}
case reflect.Struct:
o.SetBindType(OBJECT_STRUCT_SLICE)
BindName = eltType.Name()
br := reflect.New(eltType)
o.SetBindResult(br.Interface())
o.SetBindResultSlice(sliceVal)
// 解析出字段
o.parseFields()
// 是否设置了表名
switch dstVal.Kind() {
case reflect.Ptr, reflect.Struct:
if tn := br.MethodByName("TableName"); tn.IsValid() {
BindName = tn.Call(nil)[0].String()
}
default:
return errors.New("传入的对象有误,示例:var user User,传入 &user{}")
}
default:
return fmt.Errorf("table只接收 struct,[]struct,map[string]interface{},[]map[string]interface{}的对象和地址, 但是传入的是: %T", o.GetBindOrigin())
}
// 是否设置了表名
if tn := dstVal.MethodByName("TableName"); tn.IsValid() {
BindName = tn.Call(nil)[0].String()
}
default:
return fmt.Errorf("table只接收 struct,[]struct,map[string]interface{},[]map[string]interface{}, 但是传入的是: %T", o.GetBindOrigin())
}
}
o.SetBindName(prefix + BindName)
o.SetBindPrefix(prefix)
return nil
}
func (o *Binder) parseFields() {
if len(o.GetBindFields()) == 0 {
o.SetBindFields(getTagName(o.GetBindResult(), TAGNAME))
}
}
// ResetBindResultSlice ...
func (o *Binder) ResetBindResultSlice() {
if o.BindType == OBJECT_MAP_SLICE_T {
o.BindResultSlice = reflect.New(o.BindResultSlice.Type())
}
}
// SetBindPrefix ...
func (o *Binder) SetBindPrefix(arg string) {
o.BindPrefix = arg
}
// GetBindPrefix ...
func (o *Binder) GetBindPrefix() string {
return o.BindPrefix
}
// SetBindOrigin ...
func (o *Binder) SetBindOrigin(arg interface{}) {
o.BindOrigin = arg
}
// GetBindOrigin ...
func (o *Binder) GetBindOrigin() interface{} {
return o.BindOrigin
}
// SetBindName ...
func (o *Binder) SetBindName(arg string) {
o.BindName = arg
}
// GetBindName ...
func (o *Binder) GetBindName() string {
return o.BindName
}
// SetBindResult ...
func (o *Binder) SetBindResult(arg interface{}) {
o.BindResult = arg
}
// GetBindResult ...
func (o *Binder) GetBindResult() interface{} {
return o.BindResult
}
// SetBindResultSlice ...
func (o *Binder) SetBindResultSlice(arg reflect.Value) {
o.BindResultSlice = arg
}
// GetBindResultSlice ...
func (o *Binder) GetBindResultSlice() reflect.Value {
return o.BindResultSlice
}
// SetBindFields ...
func (o *Binder) SetBindFields(arg []string) {
o.BindFields = arg
}
// GetBindFields ...
func (o *Binder) GetBindFields() []string {
return o.BindFields
}
// SetBindType ...
func (o *Binder) SetBindType(arg BindType) {
o.BindType = arg
}
// GetBindType ...
func (o *Binder) GetBindType() BindType {
return o.BindType
}
// SetBindAll ...
func (o *Binder) SetBindAll(arg []Data) {
o.BindAll = arg
}
// GetBindAll ...
func (o *Binder) GetBindAll() []Data {
return o.BindAll
}
// ResetBinder ...
func (o *Binder) ResetBinder() {
switch o.BindType {
case OBJECT_STRUCT, OBJECT_MAP, OBJECT_MAP_T:
// 清空结果
o.SetBindOrigin(nil)
case OBJECT_STRUCT_SLICE, OBJECT_MAP_SLICE, OBJECT_MAP_SLICE_T:
//var rvResult = reflect.ValueOf(o.GetBindResult())
var rvResult = o.GetBindResultSlice()
// 清空结果
rvResult.Set(rvResult.Slice(0, 0))
default:
o.SetBindAll([]Data{})
}
}
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