58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
// Copyright 2019 The Xorm Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package dialects
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
type Driver interface {
|
|
Parse(string, string) (*URI, error)
|
|
}
|
|
|
|
var (
|
|
drivers = map[string]Driver{}
|
|
)
|
|
|
|
func RegisterDriver(driverName string, driver Driver) {
|
|
if driver == nil {
|
|
panic("core: Register driver is nil")
|
|
}
|
|
if _, dup := drivers[driverName]; dup {
|
|
panic("core: Register called twice for driver " + driverName)
|
|
}
|
|
drivers[driverName] = driver
|
|
}
|
|
|
|
func QueryDriver(driverName string) Driver {
|
|
return drivers[driverName]
|
|
}
|
|
|
|
func RegisteredDriverSize() int {
|
|
return len(drivers)
|
|
}
|
|
|
|
// OpenDialect opens a dialect via driver name and connection string
|
|
func OpenDialect(driverName, connstr string) (Dialect, error) {
|
|
driver := QueryDriver(driverName)
|
|
if driver == nil {
|
|
return nil, fmt.Errorf("Unsupported driver name: %v", driverName)
|
|
}
|
|
|
|
uri, err := driver.Parse(driverName, connstr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
dialect := QueryDialect(uri.DBType)
|
|
if dialect == nil {
|
|
return nil, fmt.Errorf("Unsupported dialect type: %v", uri.DBType)
|
|
}
|
|
|
|
dialect.Init(uri)
|
|
|
|
return dialect, nil
|
|
}
|