mirror of
https://github.com/astaxie/beego.git
synced 2024-11-24 06:10:55 +00:00
348 lines
9.2 KiB
Go
348 lines
9.2 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package orm
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"reflect"
|
|
"runtime/debug"
|
|
"strings"
|
|
)
|
|
|
|
// register models.
|
|
// PrefixOrSuffix means table name prefix or suffix.
|
|
// isPrefix whether the prefix is prefix or suffix
|
|
func registerModel(PrefixOrSuffix string, model interface{}, isPrefix bool) {
|
|
val := reflect.ValueOf(model)
|
|
typ := reflect.Indirect(val).Type()
|
|
|
|
if val.Kind() != reflect.Ptr {
|
|
panic(fmt.Errorf("<orm.RegisterModel> cannot use non-ptr model struct `%s`", getFullName(typ)))
|
|
}
|
|
// For this case:
|
|
// u := &User{}
|
|
// registerModel(&u)
|
|
if typ.Kind() == reflect.Ptr {
|
|
panic(fmt.Errorf("<orm.RegisterModel> only allow ptr model struct, it looks you use two reference to the struct `%s`", typ))
|
|
}
|
|
|
|
table := getTableName(val)
|
|
|
|
if PrefixOrSuffix != "" {
|
|
if isPrefix {
|
|
table = PrefixOrSuffix + table
|
|
} else {
|
|
table = table + PrefixOrSuffix
|
|
}
|
|
}
|
|
// models's fullname is pkgpath + struct name
|
|
name := getFullName(typ)
|
|
if _, ok := modelCache.getByFullName(name); ok {
|
|
fmt.Printf("<orm.RegisterModel> model `%s` repeat register, must be unique\n", name)
|
|
os.Exit(2)
|
|
}
|
|
|
|
if _, ok := modelCache.get(table); ok {
|
|
fmt.Printf("<orm.RegisterModel> table name `%s` repeat register, must be unique\n", table)
|
|
os.Exit(2)
|
|
}
|
|
|
|
mi := newModelInfo(val)
|
|
if mi.fields.pk == nil {
|
|
outFor:
|
|
for _, fi := range mi.fields.fieldsDB {
|
|
if strings.ToLower(fi.name) == "id" {
|
|
switch fi.addrValue.Elem().Kind() {
|
|
case reflect.Int, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint32, reflect.Uint64:
|
|
fi.auto = true
|
|
fi.pk = true
|
|
mi.fields.pk = fi
|
|
break outFor
|
|
}
|
|
}
|
|
}
|
|
|
|
if mi.fields.pk == nil {
|
|
fmt.Printf("<orm.RegisterModel> `%s` needs a primary key field, default is to use 'id' if not set\n", name)
|
|
os.Exit(2)
|
|
}
|
|
|
|
}
|
|
|
|
mi.table = table
|
|
mi.pkg = typ.PkgPath()
|
|
mi.model = model
|
|
mi.manual = true
|
|
|
|
modelCache.set(table, mi)
|
|
}
|
|
|
|
// bootstrap models
|
|
func bootStrap() {
|
|
if modelCache.done {
|
|
return
|
|
}
|
|
var (
|
|
err error
|
|
models map[string]*modelInfo
|
|
)
|
|
if dataBaseCache.getDefault() == nil {
|
|
err = fmt.Errorf("must have one register DataBase alias named `default`")
|
|
goto end
|
|
}
|
|
|
|
// set rel and reverse model
|
|
// RelManyToMany set the relTable
|
|
models = modelCache.all()
|
|
for _, mi := range models {
|
|
for _, fi := range mi.fields.columns {
|
|
if fi.rel || fi.reverse {
|
|
elm := fi.addrValue.Type().Elem()
|
|
if fi.fieldType == RelReverseMany || fi.fieldType == RelManyToMany {
|
|
elm = elm.Elem()
|
|
}
|
|
// check the rel or reverse model already register
|
|
name := getFullName(elm)
|
|
mii, ok := modelCache.getByFullName(name)
|
|
if !ok || mii.pkg != elm.PkgPath() {
|
|
err = fmt.Errorf("can not find rel in field `%s`, `%s` may be miss register", fi.fullName, elm.String())
|
|
goto end
|
|
}
|
|
fi.relModelInfo = mii
|
|
|
|
switch fi.fieldType {
|
|
case RelManyToMany:
|
|
if fi.relThrough != "" {
|
|
if i := strings.LastIndex(fi.relThrough, "."); i != -1 && len(fi.relThrough) > (i+1) {
|
|
pn := fi.relThrough[:i]
|
|
rmi, ok := modelCache.getByFullName(fi.relThrough)
|
|
if !ok || pn != rmi.pkg {
|
|
err = fmt.Errorf("field `%s` wrong rel_through value `%s` cannot find table", fi.fullName, fi.relThrough)
|
|
goto end
|
|
}
|
|
fi.relThroughModelInfo = rmi
|
|
fi.relTable = rmi.table
|
|
} else {
|
|
err = fmt.Errorf("field `%s` wrong rel_through value `%s`", fi.fullName, fi.relThrough)
|
|
goto end
|
|
}
|
|
} else {
|
|
i := newM2MModelInfo(mi, mii)
|
|
if fi.relTable != "" {
|
|
i.table = fi.relTable
|
|
}
|
|
if v := modelCache.set(i.table, i); v != nil {
|
|
err = fmt.Errorf("the rel table name `%s` already registered, cannot be use, please change one", fi.relTable)
|
|
goto end
|
|
}
|
|
fi.relTable = i.table
|
|
fi.relThroughModelInfo = i
|
|
}
|
|
|
|
fi.relThroughModelInfo.isThrough = true
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// check the rel filed while the relModelInfo also has filed point to current model
|
|
// if not exist, add a new field to the relModelInfo
|
|
models = modelCache.all()
|
|
for _, mi := range models {
|
|
for _, fi := range mi.fields.fieldsRel {
|
|
switch fi.fieldType {
|
|
case RelForeignKey, RelOneToOne, RelManyToMany:
|
|
inModel := false
|
|
for _, ffi := range fi.relModelInfo.fields.fieldsReverse {
|
|
if ffi.relModelInfo == mi {
|
|
inModel = true
|
|
break
|
|
}
|
|
}
|
|
if !inModel {
|
|
rmi := fi.relModelInfo
|
|
ffi := new(fieldInfo)
|
|
ffi.name = mi.name
|
|
ffi.column = ffi.name
|
|
ffi.fullName = rmi.fullName + "." + ffi.name
|
|
ffi.reverse = true
|
|
ffi.relModelInfo = mi
|
|
ffi.mi = rmi
|
|
if fi.fieldType == RelOneToOne {
|
|
ffi.fieldType = RelReverseOne
|
|
} else {
|
|
ffi.fieldType = RelReverseMany
|
|
}
|
|
if !rmi.fields.Add(ffi) {
|
|
added := false
|
|
for cnt := 0; cnt < 5; cnt++ {
|
|
ffi.name = fmt.Sprintf("%s%d", mi.name, cnt)
|
|
ffi.column = ffi.name
|
|
ffi.fullName = rmi.fullName + "." + ffi.name
|
|
if added = rmi.fields.Add(ffi); added {
|
|
break
|
|
}
|
|
}
|
|
if !added {
|
|
panic(fmt.Errorf("cannot generate auto reverse field info `%s` to `%s`", fi.fullName, ffi.fullName))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
models = modelCache.all()
|
|
for _, mi := range models {
|
|
for _, fi := range mi.fields.fieldsRel {
|
|
switch fi.fieldType {
|
|
case RelManyToMany:
|
|
for _, ffi := range fi.relThroughModelInfo.fields.fieldsRel {
|
|
switch ffi.fieldType {
|
|
case RelOneToOne, RelForeignKey:
|
|
if ffi.relModelInfo == fi.relModelInfo {
|
|
fi.reverseFieldInfoTwo = ffi
|
|
}
|
|
if ffi.relModelInfo == mi {
|
|
fi.reverseField = ffi.name
|
|
fi.reverseFieldInfo = ffi
|
|
}
|
|
}
|
|
}
|
|
if fi.reverseFieldInfoTwo == nil {
|
|
err = fmt.Errorf("can not find m2m field for m2m model `%s`, ensure your m2m model defined correct",
|
|
fi.relThroughModelInfo.fullName)
|
|
goto end
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
models = modelCache.all()
|
|
for _, mi := range models {
|
|
for _, fi := range mi.fields.fieldsReverse {
|
|
switch fi.fieldType {
|
|
case RelReverseOne:
|
|
found := false
|
|
mForA:
|
|
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelOneToOne] {
|
|
if ffi.relModelInfo == mi {
|
|
found = true
|
|
fi.reverseField = ffi.name
|
|
fi.reverseFieldInfo = ffi
|
|
|
|
ffi.reverseField = fi.name
|
|
ffi.reverseFieldInfo = fi
|
|
break mForA
|
|
}
|
|
}
|
|
if !found {
|
|
err = fmt.Errorf("reverse field `%s` not found in model `%s`", fi.fullName, fi.relModelInfo.fullName)
|
|
goto end
|
|
}
|
|
case RelReverseMany:
|
|
found := false
|
|
mForB:
|
|
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelForeignKey] {
|
|
if ffi.relModelInfo == mi {
|
|
found = true
|
|
fi.reverseField = ffi.name
|
|
fi.reverseFieldInfo = ffi
|
|
|
|
ffi.reverseField = fi.name
|
|
ffi.reverseFieldInfo = fi
|
|
|
|
break mForB
|
|
}
|
|
}
|
|
if !found {
|
|
mForC:
|
|
for _, ffi := range fi.relModelInfo.fields.fieldsByType[RelManyToMany] {
|
|
conditions := fi.relThrough != "" && fi.relThrough == ffi.relThrough ||
|
|
fi.relTable != "" && fi.relTable == ffi.relTable ||
|
|
fi.relThrough == "" && fi.relTable == ""
|
|
if ffi.relModelInfo == mi && conditions {
|
|
found = true
|
|
|
|
fi.reverseField = ffi.reverseFieldInfoTwo.name
|
|
fi.reverseFieldInfo = ffi.reverseFieldInfoTwo
|
|
fi.relThroughModelInfo = ffi.relThroughModelInfo
|
|
fi.reverseFieldInfoTwo = ffi.reverseFieldInfo
|
|
fi.reverseFieldInfoM2M = ffi
|
|
ffi.reverseFieldInfoM2M = fi
|
|
|
|
break mForC
|
|
}
|
|
}
|
|
}
|
|
if !found {
|
|
err = fmt.Errorf("reverse field for `%s` not found in model `%s`", fi.fullName, fi.relModelInfo.fullName)
|
|
goto end
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
end:
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
debug.PrintStack()
|
|
os.Exit(2)
|
|
}
|
|
}
|
|
|
|
// RegisterModel register models
|
|
func RegisterModel(models ...interface{}) {
|
|
if modelCache.done {
|
|
panic(fmt.Errorf("RegisterModel must be run before BootStrap"))
|
|
}
|
|
RegisterModelWithPrefix("", models...)
|
|
}
|
|
|
|
// RegisterModelWithPrefix register models with a prefix
|
|
func RegisterModelWithPrefix(prefix string, models ...interface{}) {
|
|
if modelCache.done {
|
|
panic(fmt.Errorf("RegisterModelWithPrefix must be run before BootStrap"))
|
|
}
|
|
|
|
for _, model := range models {
|
|
registerModel(prefix, model, true)
|
|
}
|
|
}
|
|
|
|
// RegisterModelWithSuffix register models with a suffix
|
|
func RegisterModelWithSuffix(suffix string, models ...interface{}) {
|
|
if modelCache.done {
|
|
panic(fmt.Errorf("RegisterModelWithSuffix must be run before BootStrap"))
|
|
}
|
|
|
|
for _, model := range models {
|
|
registerModel(suffix, model, false)
|
|
}
|
|
}
|
|
|
|
// BootStrap bootstrap models.
|
|
// make all model parsed and can not add more models
|
|
func BootStrap() {
|
|
modelCache.Lock()
|
|
defer modelCache.Unlock()
|
|
if modelCache.done {
|
|
return
|
|
}
|
|
bootStrap()
|
|
modelCache.done = true
|
|
}
|