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