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package schema
import (
"fmt"
"reflect"
"sync"
"github.com/puzpuzpuz/xsync/v3"
)
type Tables struct {
dialect Dialect
mu sync.Mutex
tables *xsync.MapOf[reflect.Type, *Table]
inProgress map[reflect.Type]*Table
}
func NewTables(dialect Dialect) *Tables {
return &Tables{
dialect: dialect,
tables: xsync.NewMapOf[reflect.Type, *Table](),
inProgress: make(map[reflect.Type]*Table),
}
}
func (t *Tables) Register(models ...interface{}) {
for _, model := range models {
_ = t.Get(reflect.TypeOf(model).Elem())
}
}
func (t *Tables) Get(typ reflect.Type) *Table {
typ = indirectType(typ)
if typ.Kind() != reflect.Struct {
panic(fmt.Errorf("got %s, wanted %s", typ.Kind(), reflect.Struct))
}
if v, ok := t.tables.Load(typ); ok {
return v
}
t.mu.Lock()
defer t.mu.Unlock()
if v, ok := t.tables.Load(typ); ok {
return v
}
table := t.InProgress(typ)
table.initRelations()
t.dialect.OnTable(table)
for _, field := range table.FieldMap {
if field.UserSQLType == "" {
field.UserSQLType = field.DiscoveredSQLType
}
if field.CreateTableSQLType == "" {
field.CreateTableSQLType = field.UserSQLType
}
}
t.tables.Store(typ, table)
return table
}
func (t *Tables) InProgress(typ reflect.Type) *Table {
if table, ok := t.inProgress[typ]; ok {
return table
}
table := new(Table)
t.inProgress[typ] = table
table.init(t.dialect, typ, false)
return table
}
// ByModel gets the table by its Go name.
func (t *Tables) ByModel(name string) *Table {
var found *Table
t.tables.Range(func(typ reflect.Type, table *Table) bool {
if table.TypeName == name {
found = table
return false
}
return true
})
return found
}
// ByName gets the table by its SQL name.
func (t *Tables) ByName(name string) *Table {
var found *Table
t.tables.Range(func(typ reflect.Type, table *Table) bool {
if table.Name == name {
found = table
return false
}
return true
})
return found
}
// All returns all registered tables.
func (t *Tables) All() []*Table {
var found []*Table
t.tables.Range(func(typ reflect.Type, table *Table) bool {
found = append(found, table)
return true
})
return found
}
|
