136 lines
3.0 KiB
Go
136 lines
3.0 KiB
Go
package testfixtures
|
|
|
|
import (
|
|
"database/sql"
|
|
"fmt"
|
|
"strings"
|
|
)
|
|
|
|
// SQLServer is the helper for SQL Server for this package.
|
|
// SQL Server >= 2008 is required.
|
|
type SQLServer struct {
|
|
baseHelper
|
|
|
|
tables []string
|
|
}
|
|
|
|
func (h *SQLServer) init(db *sql.DB) error {
|
|
var err error
|
|
|
|
h.tables, err = h.tableNames(db)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (*SQLServer) paramType() int {
|
|
return paramTypeQuestion
|
|
}
|
|
|
|
func (*SQLServer) quoteKeyword(s string) string {
|
|
parts := strings.Split(s, ".")
|
|
for i, p := range parts {
|
|
parts[i] = fmt.Sprintf(`[%s]`, p)
|
|
}
|
|
return strings.Join(parts, ".")
|
|
}
|
|
|
|
func (*SQLServer) databaseName(q queryable) (string, error) {
|
|
var dbName string
|
|
err := q.QueryRow("SELECT DB_NAME()").Scan(&dbName)
|
|
return dbName, err
|
|
}
|
|
|
|
func (*SQLServer) tableNames(q queryable) ([]string, error) {
|
|
rows, err := q.Query("SELECT table_schema + '.' + table_name FROM information_schema.tables")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
var tables []string
|
|
for rows.Next() {
|
|
var table string
|
|
if err = rows.Scan(&table); err != nil {
|
|
return nil, err
|
|
}
|
|
tables = append(tables, table)
|
|
}
|
|
if err = rows.Err(); err != nil {
|
|
return nil, err
|
|
}
|
|
return tables, nil
|
|
}
|
|
|
|
func (h *SQLServer) tableHasIdentityColumn(q queryable, tableName string) bool {
|
|
sql := `
|
|
SELECT COUNT(*)
|
|
FROM SYS.IDENTITY_COLUMNS
|
|
WHERE OBJECT_ID = OBJECT_ID(?)
|
|
`
|
|
var count int
|
|
q.QueryRow(sql, h.quoteKeyword(tableName)).Scan(&count)
|
|
return count > 0
|
|
|
|
}
|
|
|
|
func (h *SQLServer) whileInsertOnTable(tx *sql.Tx, tableName string, fn func() error) (err error) {
|
|
if h.tableHasIdentityColumn(tx, tableName) {
|
|
defer func() {
|
|
_, err2 := tx.Exec(fmt.Sprintf("SET IDENTITY_INSERT %s OFF", h.quoteKeyword(tableName)))
|
|
if err2 != nil && err == nil {
|
|
err = err2
|
|
}
|
|
}()
|
|
|
|
_, err := tx.Exec(fmt.Sprintf("SET IDENTITY_INSERT %s ON", h.quoteKeyword(tableName)))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return fn()
|
|
}
|
|
|
|
func (h *SQLServer) disableReferentialIntegrity(db *sql.DB, loadFn loadFunction) (err error) {
|
|
// ensure the triggers are re-enable after all
|
|
defer func() {
|
|
var sql string
|
|
for _, table := range h.tables {
|
|
sql += fmt.Sprintf("ALTER TABLE %s WITH CHECK CHECK CONSTRAINT ALL;", h.quoteKeyword(table))
|
|
}
|
|
if _, err2 := db.Exec(sql); err2 != nil && err == nil {
|
|
err = err2
|
|
}
|
|
}()
|
|
|
|
var sql string
|
|
for _, table := range h.tables {
|
|
sql += fmt.Sprintf("ALTER TABLE %s NOCHECK CONSTRAINT ALL;", h.quoteKeyword(table))
|
|
}
|
|
if _, err := db.Exec(sql); err != nil {
|
|
return err
|
|
}
|
|
|
|
tx, err := db.Begin()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer tx.Rollback()
|
|
|
|
if err = loadFn(tx); err != nil {
|
|
return err
|
|
}
|
|
|
|
return tx.Commit()
|
|
}
|
|
|
|
// splitter is a batchSplitter interface implementation. We need it for
|
|
// SQL Server because commands like a `CREATE SCHEMA...` and a `CREATE TABLE...`
|
|
// could not be executed in the same batch.
|
|
// See https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms175502(v=sql.105)#rules-for-using-batches
|
|
func (*SQLServer) splitter() []byte {
|
|
return []byte("GO\n")
|
|
}
|