94 lines
1.7 KiB
Go
94 lines
1.7 KiB
Go
package mssql
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import (
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"context"
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"database/sql/driver"
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"encoding/json"
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"errors"
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)
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type copyin struct {
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cn *Conn
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bulkcopy *Bulk
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closed bool
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}
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type serializableBulkConfig struct {
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TableName string
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ColumnsName []string
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Options BulkOptions
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}
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func (d *Driver) OpenConnection(dsn string) (*Conn, error) {
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return d.open(context.Background(), dsn)
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}
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func (c *Conn) prepareCopyIn(ctx context.Context, query string) (_ driver.Stmt, err error) {
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config_json := query[11:]
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bulkconfig := serializableBulkConfig{}
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err = json.Unmarshal([]byte(config_json), &bulkconfig)
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if err != nil {
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return
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}
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bulkcopy := c.CreateBulkContext(ctx, bulkconfig.TableName, bulkconfig.ColumnsName)
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bulkcopy.Options = bulkconfig.Options
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ci := ©in{
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cn: c,
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bulkcopy: bulkcopy,
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}
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return ci, nil
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}
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func CopyIn(table string, options BulkOptions, columns ...string) string {
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bulkconfig := &serializableBulkConfig{TableName: table, Options: options, ColumnsName: columns}
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config_json, err := json.Marshal(bulkconfig)
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if err != nil {
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panic(err)
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}
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stmt := "INSERTBULK " + string(config_json)
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return stmt
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}
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func (ci *copyin) NumInput() int {
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return -1
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}
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func (ci *copyin) Query(v []driver.Value) (r driver.Rows, err error) {
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panic("should never be called")
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}
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func (ci *copyin) Exec(v []driver.Value) (r driver.Result, err error) {
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if ci.closed {
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return nil, errors.New("errCopyInClosed")
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}
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if len(v) == 0 {
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rowCount, err := ci.bulkcopy.Done()
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ci.closed = true
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return driver.RowsAffected(rowCount), err
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}
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t := make([]interface{}, len(v))
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for i, val := range v {
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t[i] = val
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}
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err = ci.bulkcopy.AddRow(t)
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if err != nil {
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return
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}
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return driver.RowsAffected(0), nil
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}
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func (ci *copyin) Close() (err error) {
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return nil
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}
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