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tables.go
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/
tables.go
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package orm
import (
"fmt"
"reflect"
"sync"
)
var Tables = newTables()
type tables struct {
mu sync.RWMutex
tables map[reflect.Type]*Table
}
func newTables() *tables {
return &tables{
tables: make(map[reflect.Type]*Table),
}
}
func (t *tables) Register(strct interface{}) {
typ := reflect.TypeOf(strct)
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
}
_ = t.Get(typ)
}
func (t *tables) Get(typ reflect.Type) *Table {
if typ.Kind() != reflect.Struct {
panic(fmt.Errorf("got %s, wanted %s", typ.Kind(), reflect.Struct))
}
t.mu.RLock()
table, ok := t.tables[typ]
t.mu.RUnlock()
if ok {
return table
}
t.mu.Lock()
table, ok = t.tables[typ]
if !ok {
table = &Table{
Type: typ,
}
t.tables[typ] = table
}
t.mu.Unlock()
if !ok {
table.init()
}
return table
}
func (t *tables) GetByName(name string) *Table {
t.mu.RLock()
defer t.mu.RUnlock()
for _, t := range t.tables {
if string(t.Name) == name {
return t
}
}
return nil
}