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r.go
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r.go
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/*
* Copyright (c) 2000-2018, 达梦数据库有限公司.
* All rights reserved.
*/
package dm
import (
"context"
"database/sql"
"database/sql/driver"
"errors"
"fmt"
"github.com/ilooky/dm/i18n"
"regexp"
"sync"
"xorm.io/xorm"
"xorm.io/xorm/dialects"
"xorm.io/xorm/schemas"
)
// 发版标记
var version = "8.1.1.126"
var build_date = "2020.08.22"
var svn = "3743"
var globalDmDriver = newDmDriver()
func init() {
sql.Register("dm", globalDmDriver)
dialects.RegisterDriver("dm", globalDmDriver)
}
//dm://user:password@host:port?logLevel=all
//%s/%s@%s:%s/ORCL
func odbc() *xorm.Engine {
engine, err := xorm.NewEngine("dm", "dm://SYSDBA:[email protected]:5236/oci8?logLevel=all")
if err != nil {
fmt.Println("new engine got error:", err)
return nil
}
return engine
}
func driverInit(svcConfPath string) {
load(svcConfPath)
if GlobalProperties != nil && GlobalProperties.Len() > 0 {
setDriverAttributes(GlobalProperties)
}
globalDmDriver.createFilterChain(nil, GlobalProperties)
switch Locale {
case 0:
i18n.InitConfig(i18n.Messages_zh_CN)
case 1:
i18n.InitConfig(i18n.Messages_en_US)
case 2:
i18n.InitConfig(i18n.Messages_zh_TW)
}
}
type DmDriver struct {
filterable
readPropMutex sync.Mutex
}
func (d *DmDriver) Parse(driverName, dataSourceName string) (*dialects.URI, error) {
db := &dialects.URI{DBType: schemas.ORACLE}
dsnPattern := regexp.MustCompile(
`^(?P<user>.*)\/(?P<password>.*)@` + // user:password@
`(?P<net>.*)` + // ip:port
`\/(?P<dbname>.*)`) // dbname
matches := dsnPattern.FindStringSubmatch(dataSourceName)
names := dsnPattern.SubexpNames()
for i, match := range matches {
switch names[i] {
case "dbname":
db.DBName = match
}
}
if db.DBName == "" && len(matches) != 0 {
return nil, errors.New("dbname is empty")
}
return db, nil
}
func newDmDriver() *DmDriver {
d := new(DmDriver)
d.idGenerator = dmDriverIDGenerator
return d
}
/*************************************************************
** PUBLIC METHODS AND FUNCTIONS
*************************************************************/
func (d *DmDriver) Open(dsn string) (driver.Conn, error) {
return d.open(dsn)
}
func (d *DmDriver) OpenConnector(dsn string) (driver.Connector, error) {
return d.openConnector(dsn)
}
func (d *DmDriver) open(dsn string) (*DmConnection, error) {
c, err := d.openConnector(dsn)
if err != nil {
return nil, err
}
return c.connect(context.Background())
}
func (d *DmDriver) openConnector(dsn string) (*DmConnector, error) {
connector := new(DmConnector).init()
connector.url = dsn
connector.dmDriver = d
d.readPropMutex.Lock()
err := connector.mergeConfigs(dsn)
d.readPropMutex.Unlock()
if err != nil {
return nil, err
}
connector.createFilterChain(connector, nil)
return connector, nil
}