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Beego/orm/models.go
2016-08-31 00:07:19 +08:00

100 lines
2.5 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 (
"sync"
)
const (
odCascade = "cascade"
odSetNULL = "set_null"
odSetDefault = "set_default"
odDoNothing = "do_nothing"
defaultStructTagName = "orm"
defaultStructTagDelim = ";"
)
var (
modelCache = &_modelCache{
cache: make(map[string]*modelInfo),
cacheByFullName: make(map[string]*modelInfo),
}
)
// model info collection
type _modelCache struct {
sync.RWMutex // only used outsite for bootStrap
orders []string
cache map[string]*modelInfo
cacheByFullName map[string]*modelInfo
done bool
}
// get all model info
func (mc *_modelCache) all() map[string]*modelInfo {
m := make(map[string]*modelInfo, len(mc.cache))
for k, v := range mc.cache {
m[k] = v
}
return m
}
// get orderd model info
func (mc *_modelCache) allOrdered() []*modelInfo {
m := make([]*modelInfo, 0, len(mc.orders))
for _, table := range mc.orders {
m = append(m, mc.cache[table])
}
return m
}
// get model info by table name
func (mc *_modelCache) get(table string) (mi *modelInfo, ok bool) {
mi, ok = mc.cache[table]
return
}
// get model info by full name
func (mc *_modelCache) getByFullName(name string) (mi *modelInfo, ok bool) {
mi, ok = mc.cacheByFullName[name]
return
}
// set model info to collection
func (mc *_modelCache) set(table string, mi *modelInfo) *modelInfo {
mii := mc.cache[table]
mc.cache[table] = mi
mc.cacheByFullName[mi.fullName] = mi
if mii == nil {
mc.orders = append(mc.orders, table)
}
return mii
}
// clean all model info.
func (mc *_modelCache) clean() {
mc.orders = make([]string, 0)
mc.cache = make(map[string]*modelInfo)
mc.cacheByFullName = make(map[string]*modelInfo)
mc.done = false
}
// ResetModelCache Clean model cache. Then you can re-RegisterModel.
// Common use this api for test case.
func ResetModelCache() {
modelCache.clean()
}