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330 lines
10 KiB
Go
330 lines
10 KiB
Go
package genfunc
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const (
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genTnf = `
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// TableName get sql table name.获取数据库表名
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func (m *{{.StructName}}) TableName() string {
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return "{{.TableName}}"
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}
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`
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genColumn = `
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// {{.StructName}}Columns get sql column name.获取数据库列名
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var {{.StructName}}Columns = struct { {{range $em := .Em}}
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{{$em.StructName}} string{{end}}
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}{ {{range $em := .Em}}
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{{$em.StructName}}:"{{$em.ColumnName}}", {{end}}
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}
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`
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genBase = `
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package {{.PackageName}}
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import (
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"context"
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"fmt"
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"time"
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"gorm.io/gorm"
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)
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var globalIsRelated bool = true // 全局预加载
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// prepare for other
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type _BaseMgr struct {
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*gorm.DB
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ctx context.Context
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cancel context.CancelFunc
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timeout time.Duration
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isRelated bool
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}
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// SetTimeOut set timeout
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func (obj *_BaseMgr) SetTimeOut(timeout time.Duration) {
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obj.ctx, obj.cancel = context.WithTimeout(context.Background(), timeout)
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obj.timeout = timeout
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}
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// SetCtx set context
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func (obj *_BaseMgr) SetCtx(c context.Context) {
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if c != nil {
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obj.ctx = c
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}
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}
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// GetCtx get context
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func (obj *_BaseMgr) GetCtx() context.Context {
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return obj.ctx
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}
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// Cancel cancel context
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func (obj *_BaseMgr) Cancel(c context.Context) {
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obj.cancel()
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}
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// GetDB get gorm.DB info
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func (obj *_BaseMgr) GetDB() *gorm.DB {
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return obj.DB
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}
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// UpdateDB update gorm.DB info
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func (obj *_BaseMgr) UpdateDB(db *gorm.DB) {
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obj.DB = db
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}
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// GetIsRelated Query foreign key Association.获取是否查询外键关联(gorm.Related)
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func (obj *_BaseMgr) GetIsRelated() bool {
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return obj.isRelated
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}
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// SetIsRelated Query foreign key Association.设置是否查询外键关联(gorm.Related)
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func (obj *_BaseMgr) SetIsRelated(b bool) {
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obj.isRelated = b
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}
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// New new gorm.新gorm,重置条件
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func (obj *_BaseMgr) New() {
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obj.DB = obj.NewDB()
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}
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// NewDB new gorm.新gorm
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func (obj *_BaseMgr) NewDB() *gorm.DB {
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return obj.DB.Session(&gorm.Session{NewDB: true, Context: obj.ctx})
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}
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type options struct {
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query map[string]interface{}
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}
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// Option overrides behavior of Connect.
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type Option interface {
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apply(*options)
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}
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type optionFunc func(*options)
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func (f optionFunc) apply(o *options) {
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f(o)
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}
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// OpenRelated 打开全局预加载
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func OpenRelated() {
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globalIsRelated = true
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}
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// CloseRelated 关闭全局预加载
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func CloseRelated() {
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globalIsRelated = true
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}
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// 自定义sql查询
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type Condition struct {
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list []*conditionInfo
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}
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// And a condition by and .and 一个条件
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func (c *Condition) And(column string, cases string, value interface{}) {
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c.list = append(c.list, &conditionInfo{
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andor: "and",
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column: column, // 列名
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case_: cases, // 条件(and,or,in,>=,<=)
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value: value,
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})
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}
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// Or a condition by or .or 一个条件
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func (c *Condition) Or(column string, cases string, value interface{}) {
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c.list = append(c.list, &conditionInfo{
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andor: "or",
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column: column, // 列名
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case_: cases, // 条件(and,or,in,>=,<=)
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value: value,
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})
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}
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func (c *Condition) Get() (where string, out []interface{}) {
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firstAnd := -1
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for i := 0; i < len(c.list); i++ { // 查找第一个and
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if c.list[i].andor == "and" {
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where = fmt.Sprintf("{{GetVV }} %v ?", c.list[i].column, c.list[i].case_)
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out = append(out, c.list[i].value)
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firstAnd = i
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break
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}
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}
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if firstAnd < 0 && len(c.list) > 0 { // 补刀
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where = fmt.Sprintf("{{GetVV }} %v ?", c.list[0].column, c.list[0].case_)
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out = append(out, c.list[0].value)
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firstAnd = 0
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}
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for i := 0; i < len(c.list); i++ { // 添加剩余的
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if firstAnd != i {
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where += fmt.Sprintf(" %v {{GetVV }} %v ?", c.list[i].andor, c.list[i].column, c.list[i].case_)
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out = append(out, c.list[i].value)
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}
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}
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return
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}
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type conditionInfo struct {
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andor string
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column string // 列名
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case_ string // 条件(in,>=,<=)
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value interface{}
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}
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`
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genlogic = `{{$obj := .}}{{$list := $obj.Em}}
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type _{{$obj.StructName}}Mgr struct {
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*_BaseMgr
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}
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// {{$obj.StructName}}Mgr open func
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func {{$obj.StructName}}Mgr(db *gorm.DB) *_{{$obj.StructName}}Mgr {
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if db == nil {
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panic(fmt.Errorf("{{$obj.StructName}}Mgr need init by db"))
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}
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ctx, cancel := context.WithCancel(context.Background())
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return &_{{$obj.StructName}}Mgr{_BaseMgr: &_BaseMgr{DB: db.Table("{{GetTablePrefixName $obj.TableName}}"), isRelated: globalIsRelated,ctx:ctx,cancel:cancel,timeout:-1}}
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}
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// GetTableName get sql table name.获取数据库名字
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func (obj *_{{$obj.StructName}}Mgr) GetTableName() string {
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return "{{GetTablePrefixName $obj.TableName}}"
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}
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// Reset 重置gorm会话
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func (obj *_{{$obj.StructName}}Mgr) Reset() *_{{$obj.StructName}}Mgr {
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obj.New()
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return obj
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}
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// Get 获取
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func (obj *_{{$obj.StructName}}Mgr) Get() (result {{$obj.StructName}}, err error) {
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Find(&result).Error
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{{GenPreloadList $obj.PreloadList false}}
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return
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}
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// Gets 获取批量结果
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func (obj *_{{$obj.StructName}}Mgr) Gets() (results []*{{$obj.StructName}}, err error) {
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Find(&results).Error
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{{GenPreloadList $obj.PreloadList true}}
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return
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}
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////////////////////////////////// gorm replace /////////////////////////////////
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func (obj *_{{$obj.StructName}}Mgr) Count(count *int64) (tx *gorm.DB) {
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return obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Count(count)
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}
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//////////////////////////////////////////////////////////////////////////////////
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//////////////////////////option case ////////////////////////////////////////////
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{{range $oem := $obj.Em}}
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// With{{$oem.ColStructName}} {{$oem.ColName}}获取 {{$oem.Notes}}
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func (obj *_{{$obj.StructName}}Mgr) With{{$oem.ColStructName}}({{CapLowercase $oem.ColStructName}} {{$oem.Type}}) Option {
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return optionFunc(func(o *options) { o.query["{{$oem.ColName}}"] = {{CapLowercase $oem.ColStructName}} })
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}
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{{end}}
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// GetByOption 功能选项模式获取
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func (obj *_{{$obj.StructName}}Mgr) GetByOption(opts ...Option) (result {{$obj.StructName}}, err error) {
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options := options{
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query: make(map[string]interface{}, len(opts)),
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}
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for _, o := range opts {
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o.apply(&options)
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}
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Where(options.query).Find(&result).Error
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{{GenPreloadList $obj.PreloadList false}}
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return
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}
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// GetByOptions 批量功能选项模式获取
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func (obj *_{{$obj.StructName}}Mgr) GetByOptions(opts ...Option) (results []*{{$obj.StructName}}, err error) {
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options := options{
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query: make(map[string]interface{}, len(opts)),
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}
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for _, o := range opts {
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o.apply(&options)
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}
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Where(options.query).Find(&results).Error
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{{GenPreloadList $obj.PreloadList true}}
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return
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}
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//////////////////////////enume case ////////////////////////////////////////////
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{{range $oem := $obj.Em}}
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// GetFrom{{$oem.ColStructName}} 通过{{$oem.ColName}}获取内容 {{$oem.Notes}} {{if $oem.IsMulti}}
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func (obj *_{{$obj.StructName}}Mgr) GetFrom{{$oem.ColStructName}}({{CapLowercase $oem.ColStructName}} {{$oem.Type}}) (results []*{{$obj.StructName}}, err error) {
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Where("{{$oem.ColNameEx}} = ?", {{CapLowercase $oem.ColStructName}}).Find(&results).Error
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{{GenPreloadList $obj.PreloadList true}}
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return
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}
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{{else}}
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func (obj *_{{$obj.StructName}}Mgr) GetFrom{{$oem.ColStructName}}({{CapLowercase $oem.ColStructName}} {{$oem.Type}}) (result {{$obj.StructName}}, err error) {
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Where("{{$oem.ColNameEx}} = ?", {{CapLowercase $oem.ColStructName}}).Find(&result).Error
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{{GenPreloadList $obj.PreloadList false}}
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return
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}
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{{end}}
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// GetBatchFrom{{$oem.ColStructName}} 批量查找 {{$oem.Notes}}
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func (obj *_{{$obj.StructName}}Mgr) GetBatchFrom{{$oem.ColStructName}}({{CapLowercase $oem.ColStructName}}s []{{$oem.Type}}) (results []*{{$obj.StructName}}, err error) {
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Where("{{$oem.ColNameEx}} IN (?)", {{CapLowercase $oem.ColStructName}}s).Find(&results).Error
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{{GenPreloadList $obj.PreloadList true}}
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return
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}
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{{end}}
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//////////////////////////primary index case ////////////////////////////////////////////
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{{range $ofm := $obj.Primary}}
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// {{GenFListIndex $ofm 1}} primary or index 获取唯一内容
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func (obj *_{{$obj.StructName}}Mgr) {{GenFListIndex $ofm 1}}({{GenFListIndex $ofm 2}}) (result {{$obj.StructName}}, err error) {
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Where("{{GenFListIndex $ofm 3}}", {{GenFListIndex $ofm 4}}).Find(&result).Error
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{{GenPreloadList $obj.PreloadList false}}
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return
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}
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{{end}}
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{{range $ofm := $obj.Index}}
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// {{GenFListIndex $ofm 1}} 获取多个内容
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func (obj *_{{$obj.StructName}}Mgr) {{GenFListIndex $ofm 1}}({{GenFListIndex $ofm 2}}) (results []*{{$obj.StructName}}, err error) {
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err = obj.DB.WithContext(obj.ctx).Model({{$obj.StructName}}{}).Where("{{GenFListIndex $ofm 3}}", {{GenFListIndex $ofm 4}}).Find(&results).Error
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{{GenPreloadList $obj.PreloadList true}}
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return
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}
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{{end}}
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`
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genPreload = `if err == nil && obj.isRelated { {{range $obj := .}}{{if $obj.IsMulti}}
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if err = obj.NewDB().Table("{{$obj.ForeignkeyTableName}}").Where("{{$obj.ForeignkeyCol}} = ?", result.{{$obj.ColStructName}}).Find(&result.{{$obj.ForeignkeyStructName}}List).Error;err != nil { // {{$obj.Notes}}
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if err != gorm.ErrRecordNotFound { // 非 没找到
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return
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}
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} {{else}}
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if err = obj.NewDB().Table("{{$obj.ForeignkeyTableName}}").Where("{{$obj.ForeignkeyCol}} = ?", result.{{$obj.ColStructName}}).Find(&result.{{$obj.ForeignkeyStructName}}).Error; err != nil { // {{$obj.Notes}}
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if err != gorm.ErrRecordNotFound { // 非 没找到
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return
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}
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}{{end}} {{end}}}
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`
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genPreloadMulti = `if err == nil && obj.isRelated {
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for i := 0; i < len(results); i++ { {{range $obj := .}}{{if $obj.IsMulti}}
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if err = obj.NewDB().Table("{{$obj.ForeignkeyTableName}}").Where("{{$obj.ForeignkeyCol}} = ?", results[i].{{$obj.ColStructName}}).Find(&results[i].{{$obj.ForeignkeyStructName}}List).Error;err != nil { // {{$obj.Notes}}
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if err != gorm.ErrRecordNotFound { // 非 没找到
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return
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}
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} {{else}}
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if err = obj.NewDB().Table("{{$obj.ForeignkeyTableName}}").Where("{{$obj.ForeignkeyCol}} = ?", results[i].{{$obj.ColStructName}}).Find(&results[i].{{$obj.ForeignkeyStructName}}).Error; err != nil { // {{$obj.Notes}}
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if err != gorm.ErrRecordNotFound { // 非 没找到
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return
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}
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} {{end}} {{end}}
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}
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}`
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)
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