mirror of
https://github.com/astaxie/beego.git
synced 2024-11-05 05:20:54 +00:00
369 lines
8.1 KiB
Go
369 lines
8.1 KiB
Go
package orm
|
|
|
|
import (
|
|
"database/sql"
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"reflect"
|
|
"time"
|
|
)
|
|
|
|
const (
|
|
Debug_Queries = iota
|
|
)
|
|
|
|
var (
|
|
// DebugLevel = Debug_Queries
|
|
Debug = false
|
|
DebugLog = NewLog(os.Stderr)
|
|
DefaultRowsLimit = 1000
|
|
DefaultRelsDepth = 2
|
|
DefaultTimeLoc = time.Local
|
|
ErrTxHasBegan = errors.New("<Ormer.Begin> transaction already begin")
|
|
ErrTxDone = errors.New("<Ormer.Commit/Rollback> transaction not begin")
|
|
ErrMultiRows = errors.New("<QuerySeter> return multi rows")
|
|
ErrNoRows = errors.New("<QuerySeter> no row found")
|
|
ErrStmtClosed = errors.New("<QuerySeter> stmt already closed")
|
|
ErrNotImplement = errors.New("have not implement")
|
|
)
|
|
|
|
type Params map[string]interface{}
|
|
type ParamsList []interface{}
|
|
|
|
type orm struct {
|
|
alias *alias
|
|
db dbQuerier
|
|
isTx bool
|
|
}
|
|
|
|
var _ Ormer = new(orm)
|
|
|
|
func (o *orm) getMiInd(md interface{}) (mi *modelInfo, ind reflect.Value) {
|
|
val := reflect.ValueOf(md)
|
|
ind = reflect.Indirect(val)
|
|
typ := ind.Type()
|
|
if val.Kind() != reflect.Ptr {
|
|
panic(fmt.Errorf("<Ormer> cannot use non-ptr model struct `%s`", getFullName(typ)))
|
|
}
|
|
name := getFullName(typ)
|
|
if mi, ok := modelCache.getByFN(name); ok {
|
|
return mi, ind
|
|
}
|
|
panic(fmt.Errorf("<Ormer> table: `%s` not found, maybe not RegisterModel", name))
|
|
}
|
|
|
|
func (o *orm) getFieldInfo(mi *modelInfo, name string) *fieldInfo {
|
|
fi, ok := mi.fields.GetByAny(name)
|
|
if !ok {
|
|
panic(fmt.Errorf("<Ormer> cannot find field `%s` for model `%s`", name, mi.fullName))
|
|
}
|
|
return fi
|
|
}
|
|
|
|
func (o *orm) Read(md interface{}, cols ...string) error {
|
|
mi, ind := o.getMiInd(md)
|
|
err := o.alias.DbBaser.Read(o.db, mi, ind, o.alias.TZ, cols)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (o *orm) Insert(md interface{}) (int64, error) {
|
|
mi, ind := o.getMiInd(md)
|
|
id, err := o.alias.DbBaser.Insert(o.db, mi, ind, o.alias.TZ)
|
|
if err != nil {
|
|
return id, err
|
|
}
|
|
if id > 0 {
|
|
if mi.fields.pk.auto {
|
|
if mi.fields.pk.fieldType&IsPostiveIntegerField > 0 {
|
|
ind.Field(mi.fields.pk.fieldIndex).SetUint(uint64(id))
|
|
} else {
|
|
ind.Field(mi.fields.pk.fieldIndex).SetInt(id)
|
|
}
|
|
}
|
|
}
|
|
return id, nil
|
|
}
|
|
|
|
func (o *orm) Update(md interface{}, cols ...string) (int64, error) {
|
|
mi, ind := o.getMiInd(md)
|
|
num, err := o.alias.DbBaser.Update(o.db, mi, ind, o.alias.TZ, cols)
|
|
if err != nil {
|
|
return num, err
|
|
}
|
|
return num, nil
|
|
}
|
|
|
|
func (o *orm) Delete(md interface{}) (int64, error) {
|
|
mi, ind := o.getMiInd(md)
|
|
num, err := o.alias.DbBaser.Delete(o.db, mi, ind, o.alias.TZ)
|
|
if err != nil {
|
|
return num, err
|
|
}
|
|
if num > 0 {
|
|
if mi.fields.pk.auto {
|
|
if mi.fields.pk.fieldType&IsPostiveIntegerField > 0 {
|
|
ind.Field(mi.fields.pk.fieldIndex).SetUint(0)
|
|
} else {
|
|
ind.Field(mi.fields.pk.fieldIndex).SetInt(0)
|
|
}
|
|
}
|
|
}
|
|
return num, nil
|
|
}
|
|
|
|
func (o *orm) QueryM2M(md interface{}, name string) QueryM2Mer {
|
|
mi, ind := o.getMiInd(md)
|
|
fi := o.getFieldInfo(mi, name)
|
|
|
|
switch {
|
|
case fi.fieldType == RelManyToMany:
|
|
case fi.fieldType == RelReverseMany && fi.reverseFieldInfo.mi.isThrough:
|
|
default:
|
|
panic(fmt.Errorf("<Ormer.QueryM2M> model `%s` . name `%s` is not a m2m field", fi.name, mi.fullName))
|
|
}
|
|
|
|
return newQueryM2M(md, o, mi, fi, ind)
|
|
}
|
|
|
|
func (o *orm) LoadRelated(md interface{}, name string, args ...interface{}) (int64, error) {
|
|
_, fi, ind, qseter := o.queryRelated(md, name)
|
|
|
|
qs := qseter.(*querySet)
|
|
|
|
var relDepth int
|
|
var limit, offset int64
|
|
var order string
|
|
for i, arg := range args {
|
|
switch i {
|
|
case 0:
|
|
if v, ok := arg.(bool); ok {
|
|
if v {
|
|
relDepth = DefaultRelsDepth
|
|
}
|
|
} else if v, ok := arg.(int); ok {
|
|
relDepth = v
|
|
}
|
|
case 1:
|
|
limit = ToInt64(arg)
|
|
case 2:
|
|
offset = ToInt64(arg)
|
|
case 3:
|
|
order, _ = arg.(string)
|
|
}
|
|
}
|
|
|
|
switch fi.fieldType {
|
|
case RelOneToOne, RelForeignKey, RelReverseOne:
|
|
limit = 1
|
|
offset = 0
|
|
}
|
|
|
|
qs.limit = limit
|
|
qs.offset = offset
|
|
qs.relDepth = relDepth
|
|
|
|
if len(order) > 0 {
|
|
qs.orders = []string{order}
|
|
}
|
|
|
|
find := ind.Field(fi.fieldIndex)
|
|
|
|
var nums int64
|
|
var err error
|
|
switch fi.fieldType {
|
|
case RelOneToOne, RelForeignKey, RelReverseOne:
|
|
val := reflect.New(find.Type().Elem())
|
|
container := val.Interface()
|
|
err = qs.One(container)
|
|
if err == nil {
|
|
find.Set(val)
|
|
nums = 1
|
|
}
|
|
default:
|
|
nums, err = qs.All(find.Addr().Interface())
|
|
}
|
|
|
|
return nums, err
|
|
}
|
|
|
|
func (o *orm) QueryRelated(md interface{}, name string) QuerySeter {
|
|
// is this api needed ?
|
|
_, _, _, qs := o.queryRelated(md, name)
|
|
return qs
|
|
}
|
|
|
|
func (o *orm) queryRelated(md interface{}, name string) (*modelInfo, *fieldInfo, reflect.Value, QuerySeter) {
|
|
mi, ind := o.getMiInd(md)
|
|
fi := o.getFieldInfo(mi, name)
|
|
|
|
_, _, exist := getExistPk(mi, ind)
|
|
if exist == false {
|
|
panic(ErrMissPK)
|
|
}
|
|
|
|
var qs *querySet
|
|
|
|
switch fi.fieldType {
|
|
case RelOneToOne, RelForeignKey, RelManyToMany:
|
|
if !fi.inModel {
|
|
break
|
|
}
|
|
qs = o.getRelQs(md, mi, fi)
|
|
case RelReverseOne, RelReverseMany:
|
|
if !fi.inModel {
|
|
break
|
|
}
|
|
qs = o.getReverseQs(md, mi, fi)
|
|
}
|
|
|
|
if qs == nil {
|
|
panic(fmt.Errorf("<Ormer> name `%s` for model `%s` is not an available rel/reverse field"))
|
|
}
|
|
|
|
return mi, fi, ind, qs
|
|
}
|
|
|
|
func (o *orm) getReverseQs(md interface{}, mi *modelInfo, fi *fieldInfo) *querySet {
|
|
switch fi.fieldType {
|
|
case RelReverseOne, RelReverseMany:
|
|
default:
|
|
panic(fmt.Errorf("<Ormer> name `%s` for model `%s` is not an available reverse field", fi.name, mi.fullName))
|
|
}
|
|
|
|
var q *querySet
|
|
|
|
if fi.fieldType == RelReverseMany && fi.reverseFieldInfo.mi.isThrough {
|
|
q = newQuerySet(o, fi.relModelInfo).(*querySet)
|
|
q.cond = NewCondition().And(fi.reverseFieldInfoM2M.column+ExprSep+fi.reverseFieldInfo.column, md)
|
|
} else {
|
|
q = newQuerySet(o, fi.reverseFieldInfo.mi).(*querySet)
|
|
q.cond = NewCondition().And(fi.reverseFieldInfo.column, md)
|
|
}
|
|
|
|
return q
|
|
}
|
|
|
|
func (o *orm) getRelQs(md interface{}, mi *modelInfo, fi *fieldInfo) *querySet {
|
|
switch fi.fieldType {
|
|
case RelOneToOne, RelForeignKey, RelManyToMany:
|
|
default:
|
|
panic(fmt.Errorf("<Ormer> name `%s` for model `%s` is not an available rel field", fi.name, mi.fullName))
|
|
}
|
|
|
|
q := newQuerySet(o, fi.relModelInfo).(*querySet)
|
|
q.cond = NewCondition()
|
|
|
|
if fi.fieldType == RelManyToMany {
|
|
q.cond = q.cond.And(fi.reverseFieldInfoM2M.column+ExprSep+fi.reverseFieldInfo.column, md)
|
|
} else {
|
|
q.cond = q.cond.And(fi.reverseFieldInfo.column, md)
|
|
}
|
|
|
|
return q
|
|
}
|
|
|
|
func (o *orm) QueryTable(ptrStructOrTableName interface{}) (qs QuerySeter) {
|
|
name := ""
|
|
if table, ok := ptrStructOrTableName.(string); ok {
|
|
name = snakeString(table)
|
|
if mi, ok := modelCache.get(name); ok {
|
|
qs = newQuerySet(o, mi)
|
|
}
|
|
} else {
|
|
name = getFullName(indirectType(reflect.TypeOf(ptrStructOrTableName)))
|
|
if mi, ok := modelCache.getByFN(name); ok {
|
|
qs = newQuerySet(o, mi)
|
|
}
|
|
}
|
|
if qs == nil {
|
|
panic(fmt.Errorf("<Ormer.QueryTable> table name: `%s` not exists", name))
|
|
}
|
|
return
|
|
}
|
|
|
|
func (o *orm) Using(name string) error {
|
|
if o.isTx {
|
|
panic(fmt.Errorf("<Ormer.Using> transaction has been start, cannot change db"))
|
|
}
|
|
if al, ok := dataBaseCache.get(name); ok {
|
|
o.alias = al
|
|
if Debug {
|
|
o.db = newDbQueryLog(al, al.DB)
|
|
} else {
|
|
o.db = al.DB
|
|
}
|
|
} else {
|
|
return fmt.Errorf("<Ormer.Using> unknown db alias name `%s`", name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (o *orm) Begin() error {
|
|
if o.isTx {
|
|
return ErrTxHasBegan
|
|
}
|
|
var tx *sql.Tx
|
|
tx, err := o.db.(txer).Begin()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
o.isTx = true
|
|
if Debug {
|
|
o.db.(*dbQueryLog).SetDB(tx)
|
|
} else {
|
|
o.db = tx
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (o *orm) Commit() error {
|
|
if o.isTx == false {
|
|
return ErrTxDone
|
|
}
|
|
err := o.db.(txEnder).Commit()
|
|
if err == nil {
|
|
o.isTx = false
|
|
o.Using(o.alias.Name)
|
|
} else if err == sql.ErrTxDone {
|
|
return ErrTxDone
|
|
}
|
|
return err
|
|
}
|
|
|
|
func (o *orm) Rollback() error {
|
|
if o.isTx == false {
|
|
return ErrTxDone
|
|
}
|
|
err := o.db.(txEnder).Rollback()
|
|
if err == nil {
|
|
o.isTx = false
|
|
o.Using(o.alias.Name)
|
|
} else if err == sql.ErrTxDone {
|
|
return ErrTxDone
|
|
}
|
|
return err
|
|
}
|
|
|
|
func (o *orm) Raw(query string, args ...interface{}) RawSeter {
|
|
return newRawSet(o, query, args)
|
|
}
|
|
|
|
func (o *orm) Driver() Driver {
|
|
return driver(o.alias.Name)
|
|
}
|
|
|
|
func NewOrm() Ormer {
|
|
BootStrap() // execute only once
|
|
|
|
o := new(orm)
|
|
err := o.Using("default")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return o
|
|
}
|