mirror of
https://github.com/Syngnat/GoNavi.git
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b53227cb15
* feat(http-tunnel): 支持独立 HTTP 隧道连接并覆盖多数据源 refs #168 * fix(kingbase-data-grid): 修复金仓打开表卡顿并降低对象渲染开销 refs #178 * fix(kingbase-transaction): 修复金仓事务提交重复引号导致语法错误 refs #176 * fix(driver-agent): 修复老版本 Win10 升级后金仓驱动代理启动失败 refs #177 * chore(ci): 新增手动触发的 macOS 测试构建工作流 * chore(ci): 允许测试工作流在当前分支自动触发 * fix(query-editor): 修复 SQL 编辑中光标随机跳到末尾 refs #185 * feat(data-sync): 增加差异 SQL 预览能力便于审核 refs #174 * fix(clickhouse-connect): 自动识别并回退 HTTP/Native 协议连接 refs #181 * fix(oracle-metadata): 修复视图与函数加载按 schema 过滤异常 refs #155 * fix(dameng-databases): 修复显示全部库时数据库列表不完整 refs #154 * fix(connection,db-list): 统一处理空列表返回并修复达梦连接测试报错 refs #157
598 lines
16 KiB
Go
598 lines
16 KiB
Go
//go:build gonavi_full_drivers || gonavi_dameng_driver
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package db
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import (
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"context"
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"database/sql"
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"fmt"
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"net"
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"net/url"
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"sort"
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"strconv"
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"strings"
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"time"
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"GoNavi-Wails/internal/connection"
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"GoNavi-Wails/internal/logger"
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"GoNavi-Wails/internal/ssh"
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"GoNavi-Wails/internal/utils"
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_ "gitee.com/chunanyong/dm"
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)
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type DamengDB struct {
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conn *sql.DB
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pingTimeout time.Duration
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forwarder *ssh.LocalForwarder // Store SSH tunnel forwarder
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}
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func (d *DamengDB) getDSN(config connection.ConnectionConfig) string {
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// dm://user:password@host:port?schema=...
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// or dm://user:password@host:port
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address := net.JoinHostPort(config.Host, strconv.Itoa(config.Port))
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escapedPassword := url.PathEscape(config.Password)
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q := url.Values{}
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if config.Database != "" {
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q.Set("schema", config.Database)
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}
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if config.UseSSL {
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if certPath := strings.TrimSpace(config.SSLCertPath); certPath != "" {
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q.Set("SSL_CERT_PATH", certPath)
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}
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if keyPath := strings.TrimSpace(config.SSLKeyPath); keyPath != "" {
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q.Set("SSL_KEY_PATH", keyPath)
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}
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}
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if escapedPassword != config.Password {
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// 达梦驱动要求：密码包含特殊字符时，password 需 PathEscape，并添加 escapeProcess=true 让驱动解码。
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q.Set("escapeProcess", "true")
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}
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dsn := fmt.Sprintf("dm://%s:%s@%s", config.User, escapedPassword, address)
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encoded := q.Encode()
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if encoded == "" {
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return dsn
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}
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return dsn + "?" + encoded
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}
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func (d *DamengDB) Connect(config connection.ConnectionConfig) error {
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runConfig := config
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if runConfig.UseSSL {
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if strings.TrimSpace(runConfig.SSLCertPath) == "" || strings.TrimSpace(runConfig.SSLKeyPath) == "" {
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return fmt.Errorf("达梦启用 SSL 需要同时配置证书路径(sslCertPath)与私钥路径(sslKeyPath)")
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}
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}
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if config.UseSSH {
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// Create SSH tunnel with local port forwarding
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logger.Infof("达梦数据库使用 SSH 连接：地址=%s:%d 用户=%s", config.Host, config.Port, config.User)
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forwarder, err := ssh.GetOrCreateLocalForwarder(config.SSH, config.Host, config.Port)
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if err != nil {
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return fmt.Errorf("创建 SSH 隧道失败：%w", err)
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}
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d.forwarder = forwarder
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// Parse local address
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host, portStr, err := net.SplitHostPort(forwarder.LocalAddr)
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if err != nil {
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return fmt.Errorf("解析本地转发地址失败：%w", err)
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}
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port, err := strconv.Atoi(portStr)
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if err != nil {
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return fmt.Errorf("解析本地端口失败：%w", err)
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}
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// Create a modified config pointing to local forwarder
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localConfig := config
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localConfig.Host = host
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localConfig.Port = port
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localConfig.UseSSH = false
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runConfig = localConfig
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logger.Infof("达梦数据库通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, config.Host, config.Port)
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}
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attempts := []connection.ConnectionConfig{runConfig}
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if shouldTrySSLPreferredFallback(runConfig) {
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attempts = append(attempts, withSSLDisabled(runConfig))
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}
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var failures []string
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for idx, attempt := range attempts {
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dsn := d.getDSN(attempt)
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db, err := sql.Open("dm", dsn)
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if err != nil {
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failures = append(failures, fmt.Sprintf("第%d次连接打开失败: %v", idx+1, err))
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continue
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}
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d.conn = db
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d.pingTimeout = getConnectTimeout(attempt)
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if err := d.Ping(); err != nil {
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_ = db.Close()
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d.conn = nil
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failures = append(failures, fmt.Sprintf("第%d次连接验证失败: %v", idx+1, err))
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continue
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}
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if idx > 0 {
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logger.Warnf("达梦 SSL 优先连接失败，已回退至明文连接")
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}
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return nil
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}
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return fmt.Errorf("连接建立后验证失败：%s", strings.Join(failures, "；"))
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}
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func (d *DamengDB) Close() error {
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// Close SSH forwarder first if exists
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if d.forwarder != nil {
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if err := d.forwarder.Close(); err != nil {
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logger.Warnf("关闭达梦数据库 SSH 端口转发失败：%v", err)
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}
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d.forwarder = nil
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}
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// Then close database connection
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if d.conn != nil {
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return d.conn.Close()
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}
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return nil
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}
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func (d *DamengDB) Ping() error {
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if d.conn == nil {
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return fmt.Errorf("connection not open")
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}
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timeout := d.pingTimeout
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if timeout <= 0 {
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timeout = 5 * time.Second
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}
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ctx, cancel := utils.ContextWithTimeout(timeout)
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defer cancel()
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return d.conn.PingContext(ctx)
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}
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func (d *DamengDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
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if d.conn == nil {
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return nil, nil, fmt.Errorf("connection not open")
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}
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rows, err := d.conn.QueryContext(ctx, query)
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if err != nil {
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return nil, nil, err
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}
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defer rows.Close()
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return scanRows(rows)
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}
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func (d *DamengDB) Query(query string) ([]map[string]interface{}, []string, error) {
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if d.conn == nil {
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return nil, nil, fmt.Errorf("connection not open")
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}
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rows, err := d.conn.Query(query)
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if err != nil {
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return nil, nil, err
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}
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defer rows.Close()
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return scanRows(rows)
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}
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func (d *DamengDB) ExecContext(ctx context.Context, query string) (int64, error) {
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if d.conn == nil {
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return 0, fmt.Errorf("connection not open")
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}
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res, err := d.conn.ExecContext(ctx, query)
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if err != nil {
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return 0, err
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}
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return res.RowsAffected()
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}
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func (d *DamengDB) Exec(query string) (int64, error) {
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if d.conn == nil {
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return 0, fmt.Errorf("connection not open")
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}
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res, err := d.conn.Exec(query)
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if err != nil {
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return 0, err
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}
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return res.RowsAffected()
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}
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func (d *DamengDB) GetDatabases() ([]string, error) {
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// 达梦将「用户/模式」作为数据库列表来源，不同权限下可见口径不同。
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// 这里采用多查询口径聚合，避免仅依赖单一视图导致“少库”。
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queries := []string{
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"SELECT USERNAME AS DATABASE_NAME FROM SYS.DBA_USERS ORDER BY USERNAME",
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"SELECT USERNAME AS DATABASE_NAME FROM DBA_USERS ORDER BY USERNAME",
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"SELECT USERNAME AS DATABASE_NAME FROM ALL_USERS ORDER BY USERNAME",
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"SELECT USERNAME AS DATABASE_NAME FROM USER_USERS",
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"SELECT DISTINCT OWNER AS DATABASE_NAME FROM ALL_TABLES ORDER BY OWNER",
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}
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seen := make(map[string]struct{})
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dbs := make([]string, 0, 64)
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var lastErr error
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success := false
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for _, q := range queries {
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data, _, err := d.Query(q)
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if err != nil {
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lastErr = err
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continue
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}
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success = true
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for _, row := range data {
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name := getDamengRowString(row, "DATABASE_NAME", "USERNAME", "OWNER", "SCHEMA_NAME")
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if name == "" {
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// 回退到第一列，兼容驱动返回列名差异。
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for _, v := range row {
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text := strings.TrimSpace(fmt.Sprintf("%v", v))
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if text == "" || strings.EqualFold(text, "<nil>") {
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continue
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}
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name = text
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break
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}
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}
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if name == "" {
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continue
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}
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key := strings.ToUpper(name)
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if _, ok := seen[key]; ok {
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continue
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}
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seen[key] = struct{}{}
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dbs = append(dbs, name)
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}
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}
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if !success && lastErr != nil {
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return nil, lastErr
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}
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sort.Slice(dbs, func(i, j int) bool {
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return strings.ToUpper(dbs[i]) < strings.ToUpper(dbs[j])
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})
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return dbs, nil
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}
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func getDamengRowString(row map[string]interface{}, keys ...string) string {
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if len(row) == 0 {
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return ""
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}
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for _, key := range keys {
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for k, v := range row {
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if !strings.EqualFold(strings.TrimSpace(k), strings.TrimSpace(key)) {
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continue
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}
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text := strings.TrimSpace(fmt.Sprintf("%v", v))
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if text == "" || strings.EqualFold(text, "<nil>") {
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return ""
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}
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return text
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}
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}
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return ""
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}
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func (d *DamengDB) GetTables(dbName string) ([]string, error) {
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query := fmt.Sprintf("SELECT owner, table_name FROM all_tables WHERE owner = '%s' ORDER BY table_name", strings.ToUpper(dbName))
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if dbName == "" {
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query = "SELECT table_name FROM user_tables"
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}
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data, _, err := d.Query(query)
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if err != nil {
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return nil, err
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}
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var tables []string
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for _, row := range data {
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if dbName != "" {
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if owner, okOwner := row["OWNER"]; okOwner {
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if name, okName := row["TABLE_NAME"]; okName {
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tables = append(tables, fmt.Sprintf("%v.%v", owner, name))
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continue
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}
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}
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}
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if val, ok := row["TABLE_NAME"]; ok {
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tables = append(tables, fmt.Sprintf("%v", val))
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}
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}
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return tables, nil
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}
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func (d *DamengDB) GetCreateStatement(dbName, tableName string) (string, error) {
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// DM: SP_TABLEDEF usually returns definition
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// Or standard Oracle way if supported.
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// We'll try a common DM approach.
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// SELECT DBMS_METADATA.GET_DDL('TABLE', 'TABLE_NAME', 'OWNER') FROM DUAL;
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query := fmt.Sprintf("SELECT DBMS_METADATA.GET_DDL('TABLE', '%s', '%s') as ddl FROM DUAL",
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strings.ToUpper(tableName), strings.ToUpper(dbName))
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if dbName == "" {
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query = fmt.Sprintf("SELECT DBMS_METADATA.GET_DDL('TABLE', '%s') as ddl FROM DUAL", strings.ToUpper(tableName))
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}
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data, _, err := d.Query(query)
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if err != nil {
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return "", err
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}
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if len(data) > 0 {
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if val, ok := data[0]["DDL"]; ok {
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return fmt.Sprintf("%v", val), nil
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}
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}
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return "", fmt.Errorf("create statement not found")
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}
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func (d *DamengDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
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query := fmt.Sprintf(`SELECT column_name, data_type, nullable, data_default
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FROM all_tab_columns
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WHERE owner = '%s' AND table_name = '%s'`,
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strings.ToUpper(dbName), strings.ToUpper(tableName))
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if dbName == "" {
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query = fmt.Sprintf(`SELECT column_name, data_type, nullable, data_default
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FROM user_tab_columns
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WHERE table_name = '%s'`, strings.ToUpper(tableName))
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}
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data, _, err := d.Query(query)
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if err != nil {
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return nil, err
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}
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var columns []connection.ColumnDefinition
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for _, row := range data {
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col := connection.ColumnDefinition{
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Name: fmt.Sprintf("%v", row["COLUMN_NAME"]),
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Type: fmt.Sprintf("%v", row["DATA_TYPE"]),
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Nullable: fmt.Sprintf("%v", row["NULLABLE"]),
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}
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if row["DATA_DEFAULT"] != nil {
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def := fmt.Sprintf("%v", row["DATA_DEFAULT"])
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col.Default = &def
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}
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columns = append(columns, col)
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}
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return columns, nil
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}
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func (d *DamengDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
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query := fmt.Sprintf(`SELECT index_name, column_name, uniqueness
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FROM all_ind_columns
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JOIN all_indexes USING (index_name, owner)
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WHERE table_owner = '%s' AND table_name = '%s'`,
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strings.ToUpper(dbName), strings.ToUpper(tableName))
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if dbName == "" {
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query = fmt.Sprintf(`SELECT index_name, column_name, uniqueness
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FROM user_ind_columns
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JOIN user_indexes USING (index_name)
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WHERE table_name = '%s'`, strings.ToUpper(tableName))
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}
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data, _, err := d.Query(query)
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if err != nil {
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return nil, err
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}
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var indexes []connection.IndexDefinition
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for _, row := range data {
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unique := 1
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if val, ok := row["UNIQUENESS"]; ok && val == "UNIQUE" {
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unique = 0
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}
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idx := connection.IndexDefinition{
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Name: fmt.Sprintf("%v", row["INDEX_NAME"]),
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ColumnName: fmt.Sprintf("%v", row["COLUMN_NAME"]),
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NonUnique: unique,
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IndexType: "BTREE",
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}
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indexes = append(indexes, idx)
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}
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return indexes, nil
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}
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func (d *DamengDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
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// Reusing Oracle style query as DM is highly compatible
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query := fmt.Sprintf(`SELECT a.constraint_name, a.column_name, c_pk.table_name r_table_name, b.column_name r_column_name
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FROM all_cons_columns a
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JOIN all_constraints c ON a.owner = c.owner AND a.constraint_name = c.constraint_name
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JOIN all_constraints c_pk ON c.r_owner = c_pk.owner AND c.r_constraint_name = c_pk.constraint_name
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JOIN all_cons_columns b ON c_pk.owner = b.owner AND c_pk.constraint_name = b.constraint_name AND a.position = b.position
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WHERE c.constraint_type = 'R' AND a.owner = '%s' AND a.table_name = '%s'`,
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strings.ToUpper(dbName), strings.ToUpper(tableName))
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data, _, err := d.Query(query)
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if err != nil {
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return nil, err
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}
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var fks []connection.ForeignKeyDefinition
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for _, row := range data {
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fk := connection.ForeignKeyDefinition{
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Name: fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
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ColumnName: fmt.Sprintf("%v", row["COLUMN_NAME"]),
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RefTableName: fmt.Sprintf("%v", row["R_TABLE_NAME"]),
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RefColumnName: fmt.Sprintf("%v", row["R_COLUMN_NAME"]),
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ConstraintName: fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
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}
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fks = append(fks, fk)
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}
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return fks, nil
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}
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func (d *DamengDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
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query := fmt.Sprintf(`SELECT trigger_name, trigger_type, triggering_event
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FROM all_triggers
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WHERE table_owner = '%s' AND table_name = '%s'`,
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strings.ToUpper(dbName), strings.ToUpper(tableName))
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data, _, err := d.Query(query)
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if err != nil {
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return nil, err
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}
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var triggers []connection.TriggerDefinition
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for _, row := range data {
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trig := connection.TriggerDefinition{
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Name: fmt.Sprintf("%v", row["TRIGGER_NAME"]),
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Timing: fmt.Sprintf("%v", row["TRIGGER_TYPE"]),
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Event: fmt.Sprintf("%v", row["TRIGGERING_EVENT"]),
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Statement: "SOURCE HIDDEN",
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}
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triggers = append(triggers, trig)
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}
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return triggers, nil
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}
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func (d *DamengDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
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if d.conn == nil {
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return fmt.Errorf("connection not open")
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}
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tx, err := d.conn.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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quoteIdent := func(name string) string {
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n := strings.TrimSpace(name)
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n = strings.Trim(n, "\"")
|
||
n = strings.ReplaceAll(n, "\"", "\"\"")
|
||
if n == "" {
|
||
return "\"\""
|
||
}
|
||
return `"` + n + `"`
|
||
}
|
||
|
||
schema := ""
|
||
table := strings.TrimSpace(tableName)
|
||
if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
|
||
schema = strings.TrimSpace(parts[0])
|
||
table = strings.TrimSpace(parts[1])
|
||
}
|
||
|
||
qualifiedTable := ""
|
||
if schema != "" {
|
||
qualifiedTable = fmt.Sprintf("%s.%s", quoteIdent(schema), quoteIdent(table))
|
||
} else {
|
||
qualifiedTable = quoteIdent(table)
|
||
}
|
||
|
||
// 1. Deletes
|
||
for _, pk := range changes.Deletes {
|
||
var wheres []string
|
||
var args []interface{}
|
||
idx := 0
|
||
for k, v := range pk {
|
||
idx++
|
||
wheres = append(wheres, fmt.Sprintf("%s = :%d", quoteIdent(k), idx))
|
||
args = append(args, v)
|
||
}
|
||
if len(wheres) == 0 {
|
||
continue
|
||
}
|
||
query := fmt.Sprintf("DELETE FROM %s WHERE %s", qualifiedTable, strings.Join(wheres, " AND "))
|
||
if _, err := tx.Exec(query, args...); err != nil {
|
||
return fmt.Errorf("delete error: %v", err)
|
||
}
|
||
}
|
||
|
||
// 2. Updates
|
||
for _, update := range changes.Updates {
|
||
var sets []string
|
||
var args []interface{}
|
||
idx := 0
|
||
|
||
for k, v := range update.Values {
|
||
idx++
|
||
sets = append(sets, fmt.Sprintf("%s = :%d", quoteIdent(k), idx))
|
||
args = append(args, v)
|
||
}
|
||
|
||
if len(sets) == 0 {
|
||
continue
|
||
}
|
||
|
||
var wheres []string
|
||
for k, v := range update.Keys {
|
||
idx++
|
||
wheres = append(wheres, fmt.Sprintf("%s = :%d", quoteIdent(k), idx))
|
||
args = append(args, v)
|
||
}
|
||
|
||
if len(wheres) == 0 {
|
||
return fmt.Errorf("update requires keys")
|
||
}
|
||
|
||
query := fmt.Sprintf("UPDATE %s SET %s WHERE %s", qualifiedTable, strings.Join(sets, ", "), strings.Join(wheres, " AND "))
|
||
if _, err := tx.Exec(query, args...); err != nil {
|
||
return fmt.Errorf("update error: %v", err)
|
||
}
|
||
}
|
||
|
||
// 3. Inserts
|
||
for _, row := range changes.Inserts {
|
||
var cols []string
|
||
var placeholders []string
|
||
var args []interface{}
|
||
idx := 0
|
||
|
||
for k, v := range row {
|
||
idx++
|
||
cols = append(cols, quoteIdent(k))
|
||
placeholders = append(placeholders, fmt.Sprintf(":%d", idx))
|
||
args = append(args, v)
|
||
}
|
||
|
||
if len(cols) == 0 {
|
||
continue
|
||
}
|
||
|
||
query := fmt.Sprintf("INSERT INTO %s (%s) VALUES (%s)", qualifiedTable, strings.Join(cols, ", "), strings.Join(placeholders, ", "))
|
||
if _, err := tx.Exec(query, args...); err != nil {
|
||
return fmt.Errorf("insert error: %v", err)
|
||
}
|
||
}
|
||
|
||
return tx.Commit()
|
||
}
|
||
|
||
func (d *DamengDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
|
||
query := fmt.Sprintf(`SELECT table_name, column_name, data_type
|
||
FROM all_tab_columns
|
||
WHERE owner = '%s'`, strings.ToUpper(dbName))
|
||
|
||
data, _, err := d.Query(query)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
var cols []connection.ColumnDefinitionWithTable
|
||
for _, row := range data {
|
||
col := connection.ColumnDefinitionWithTable{
|
||
TableName: fmt.Sprintf("%v", row["TABLE_NAME"]),
|
||
Name: fmt.Sprintf("%v", row["COLUMN_NAME"]),
|
||
Type: fmt.Sprintf("%v", row["DATA_TYPE"]),
|
||
}
|
||
cols = append(cols, col)
|
||
}
|
||
return cols, nil
|
||
}
|