initial commit

vendor/gopkg.in/testfixtures.v2/sqlserver.go

@@ -0,0 +1,122 @@
+package testfixtures
+
+import (
+	"database/sql"
+	"fmt"
+)
+
+// 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(str string) string {
+	return fmt.Sprintf("[%s]", str)
+}
+
+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_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 (*SQLServer) tableHasIdentityColumn(q queryable, tableName string) bool {
+	sql := `
+		SELECT COUNT(*)
+		FROM SYS.IDENTITY_COLUMNS
+		WHERE OBJECT_NAME(OBJECT_ID) = ?
+	`
+	var count int
+	q.QueryRow(sql, 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()
+}