hoteas
7f7b585ffb
- 在应用程序中新增对达梦数据库（DM）的配置和连接支持 - 实现 SetDmDB 函数以配置达梦数据库连接 - 更新数据库操作逻辑，支持达梦特有的 SQL 语法和功能 - 在相关文件中添加达梦数据库的处理逻辑，包括表创建、数据插入和查询 - 更新 go.mod 和 go.sum 文件以引入达梦数据库驱动 - 增强文档，详细说明达梦数据库的配置和使用方法
120 lines
2.7 KiB
Go
120 lines
2.7 KiB
Go
/*
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* Copyright (c) 2000-2018, 达梦数据库有限公司.
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* All rights reserved.
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*/
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package dm
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import (
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"context"
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"database/sql"
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"database/sql/driver"
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"net"
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"sync"
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"gitee.com/chunanyong/dm/i18n"
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)
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// 发版标记
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var version = "8.1.4.170"
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var build_date = "2025.11.21"
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var svn = "43114"
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var globalDmDriver = newDmDriver()
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func init() {
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sql.Register("dm", globalDmDriver)
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i18n.InitConfig(i18n.Messages_zh_CN)
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i18n.InitConfig(i18n.Messages_en_US)
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i18n.InitConfig(i18n.Messages_zh_HK)
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}
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func driverInit(svcConfPath string) {
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load(svcConfPath)
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if GlobalProperties != nil && GlobalProperties.Len() > 0 {
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setDriverAttributes(GlobalProperties)
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}
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globalDmDriver.createFilterChain(nil, GlobalProperties)
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}
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type DmDriver struct {
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filterable
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mu sync.Mutex
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//readPropMutex sync.Mutex
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}
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func newDmDriver() *DmDriver {
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d := new(DmDriver)
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d.idGenerator = dmDriverIDGenerator
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return d
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}
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// 支持自定义连接网络地址，返回标准net.Conn对象，相关数据库操作的消息包都将发送到该对象
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type DialFunc func(addr string) (net.Conn, error)
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// 支持自定义连接网络地址，返回标准net.Conn对象，相关数据库操作的消息包都将发送到该对象
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type DialContextFunc func(ctx context.Context, addr string) (net.Conn, error)
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var (
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dialsLock sync.RWMutex
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dials map[string]DialContextFunc
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)
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// 注册自定义连接方法
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func RegisterDial(dialName string, dial DialFunc) {
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RegisterDialContext(dialName, func(_ context.Context, addr string) (net.Conn, error) {
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return dial(addr)
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})
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}
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// 注册自定义连接方法
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func RegisterDialContext(dialName string, dial DialContextFunc) {
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dialsLock.Lock()
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defer dialsLock.Unlock()
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if dials == nil {
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dials = make(map[string]DialContextFunc)
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}
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dials[dialName] = dial
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}
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/*************************************************************
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** PUBLIC METHODS AND FUNCTIONS
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*************************************************************/
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func (d *DmDriver) Open(dsn string) (driver.Conn, error) {
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d.mu.Lock()
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defer d.mu.Unlock()
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return d.open(dsn)
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}
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func (d *DmDriver) OpenConnector(dsn string) (driver.Connector, error) {
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d.mu.Lock()
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defer d.mu.Unlock()
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return d.openConnector(dsn)
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}
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func (d *DmDriver) open(dsn string) (*DmConnection, error) {
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c, err := d.openConnector(dsn)
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if err != nil {
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return nil, err
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}
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return c.connect(context.Background())
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}
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func (d *DmDriver) openConnector(dsn string) (*DmConnector, error) {
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connector := new(DmConnector).init()
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connector.url = dsn
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connector.dmDriver = d
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//d.readPropMutex.Lock()
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err := connector.mergeConfigs(dsn)
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//d.readPropMutex.Unlock()
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if err != nil {
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return nil, err
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}
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connector.createFilterChain(connector, nil)
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return connector, nil
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}
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func GetDriverVersion() string {
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return version
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}
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