models.go
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package orm
import (
"sync"
)
const (
od_CASCADE = "cascade"
od_SET_NULL = "set_null"
od_SET_DEFAULT = "set_default"
od_DO_NOTHING = "do_nothing"
defaultStructTagName = "orm"
)
var (
modelCache = &_modelCache{
cache: make(map[string]*modelInfo),
cacheByFN: make(map[string]*modelInfo),
}
supportTag = map[string]int{
"-": 1,
"null": 1,
"blank": 1,
"index": 1,
"unique": 1,
"pk": 1,
"auto": 1,
"auto_now": 1,
"auto_now_add": 1,
"size": 2,
"column": 2,
"default": 2,
"rel": 2,
"reverse": 2,
"rel_table": 2,
"rel_through": 2,
"digits": 2,
"decimals": 2,
"on_delete": 2,
"type": 2,
}
)
type _modelCache struct {
sync.RWMutex
orders []string
cache map[string]*modelInfo
cacheByFN map[string]*modelInfo
done bool
}
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
}
func (mc *_modelCache) allOrdered() []*modelInfo {
m := make([]*modelInfo, 0, len(mc.orders))
for _, v := range mc.cache {
m = append(m, v)
}
return m
}
func (mc *_modelCache) get(table string) (mi *modelInfo, ok bool) {
mi, ok = mc.cache[table]
return
}
func (mc *_modelCache) getByFN(name string) (mi *modelInfo, ok bool) {
mi, ok = mc.cacheByFN[name]
return
}
func (mc *_modelCache) set(table string, mi *modelInfo) *modelInfo {
mii := mc.cache[table]
mc.cache[table] = mi
mc.cacheByFN[mi.fullName] = mi
if mii == nil {
mc.orders = append(mc.orders, table)
}
return mii
}
func (mc *_modelCache) clean() {
mc.orders = make([]string, 0)
mc.cache = make(map[string]*modelInfo)
mc.cacheByFN = make(map[string]*modelInfo)
mc.done = false
}