forked from mirror/gorm
81 lines
2.2 KiB
Go
81 lines
2.2 KiB
Go
package gorm
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
)
|
|
|
|
type sqlite3 struct{}
|
|
|
|
func (s *sqlite3) BinVar(i int) string {
|
|
return "$$" // ?
|
|
}
|
|
|
|
func (s *sqlite3) SupportLastInsertId() bool {
|
|
return true
|
|
}
|
|
|
|
func (s *sqlite3) SqlTag(value reflect.Value, size int) string {
|
|
switch value.Kind() {
|
|
case reflect.Bool:
|
|
return "bool"
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uintptr:
|
|
return "integer"
|
|
case reflect.Int64, reflect.Uint64:
|
|
return "bigint"
|
|
case reflect.Float32, reflect.Float64:
|
|
return "real"
|
|
case reflect.String:
|
|
if size > 0 && size < 65532 {
|
|
return fmt.Sprintf("varchar(%d)", size)
|
|
} else {
|
|
return "text"
|
|
}
|
|
case reflect.Struct:
|
|
if value.Type() == timeType {
|
|
return "datetime"
|
|
}
|
|
default:
|
|
if _, ok := value.Interface().([]byte); ok {
|
|
return "blob"
|
|
}
|
|
}
|
|
panic(fmt.Sprintf("invalid sql type %s (%s) for sqlite3", value.Type().Name(), value.Kind().String()))
|
|
}
|
|
|
|
func (s *sqlite3) PrimaryKeyTag(value reflect.Value, size int) string {
|
|
switch value.Kind() {
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uintptr, reflect.Int64, reflect.Uint64:
|
|
return "INTEGER PRIMARY KEY"
|
|
default:
|
|
panic("Invalid primary key type")
|
|
}
|
|
}
|
|
|
|
func (s *sqlite3) ReturningStr(key string) string {
|
|
return ""
|
|
}
|
|
|
|
func (s *sqlite3) Quote(key string) string {
|
|
return fmt.Sprintf("\"%s\"", key)
|
|
}
|
|
|
|
func (s *sqlite3) HasTable(scope *Scope, tableName string) bool {
|
|
var count int
|
|
newScope := scope.New(nil)
|
|
newScope.Raw(fmt.Sprintf("SELECT count(*) FROM INFORMATION_SCHEMA.tables where table_name = %v", newScope.AddToVars(tableName)))
|
|
newScope.DB().QueryRow(newScope.Sql, newScope.SqlVars...).Scan(&count)
|
|
return count > 0
|
|
}
|
|
|
|
func (s *sqlite3) HasColumn(scope *Scope, tableName string, columnName string) bool {
|
|
var count int
|
|
newScope := scope.New(nil)
|
|
newScope.Raw(fmt.Sprintf("SELECT count(*) FROM information_schema.columns WHERE table_name = %v AND column_name = %v",
|
|
newScope.AddToVars(tableName),
|
|
newScope.AddToVars(columnName),
|
|
))
|
|
newScope.DB().QueryRow(newScope.Sql, newScope.SqlVars...).Scan(&count)
|
|
return count > 0
|
|
}
|