A fork of Gitea (see branch `mj`) adding Majority Judgment Polls 𐄷 over Issues and Merge Requests. https://git.mieuxvoter.fr
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package testfixtures
import (
"database/sql"
"fmt"
)
type mySQL struct {
baseHelper
tables []string
tablesChecksum map[string]int64
}
func (h *mySQL) init(db *sql.DB) error {
var err error
h.tables, err = h.tableNames(db)
if err != nil {
return err
}
return nil
}
func (*mySQL) paramType() int {
return paramTypeQuestion
}
func (*mySQL) quoteKeyword(str string) string {
return fmt.Sprintf("`%s`", str)
}
func (*mySQL) databaseName(q queryable) (string, error) {
var dbName string
err := q.QueryRow("SELECT DATABASE()").Scan(&dbName)
return dbName, err
}
func (h *mySQL) tableNames(q queryable) ([]string, error) {
query := `
SELECT table_name
FROM information_schema.tables
WHERE table_schema = ?
AND table_type = 'BASE TABLE';
`
dbName, err := h.databaseName(q)
if err != nil {
return nil, err
}
rows, err := q.Query(query, dbName)
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 *mySQL) disableReferentialIntegrity(db *sql.DB, loadFn loadFunction) (err error) {
tx, err := db.Begin()
if err != nil {
return err
}
defer tx.Rollback()
if _, err = tx.Exec("SET FOREIGN_KEY_CHECKS = 0"); err != nil {
return err
}
err = loadFn(tx)
_, err2 := tx.Exec("SET FOREIGN_KEY_CHECKS = 1")
if err != nil {
return err
}
if err2 != nil {
return err2
}
return tx.Commit()
}
func (h *mySQL) isTableModified(q queryable, tableName string) (bool, error) {
checksum, err := h.getChecksum(q, tableName)
if err != nil {
return true, err
}
oldChecksum := h.tablesChecksum[tableName]
return oldChecksum == 0 || checksum != oldChecksum, nil
}
func (h *mySQL) afterLoad(q queryable) error {
if h.tablesChecksum != nil {
return nil
}
h.tablesChecksum = make(map[string]int64, len(h.tables))
for _, t := range h.tables {
checksum, err := h.getChecksum(q, t)
if err != nil {
return err
}
h.tablesChecksum[t] = checksum
}
return nil
}
func (h *mySQL) getChecksum(q queryable, tableName string) (int64, error) {
sql := fmt.Sprintf("CHECKSUM TABLE %s", h.quoteKeyword(tableName))
var (
table string
checksum int64
)
if err := q.QueryRow(sql).Scan(&table, &checksum); err != nil {
return 0, err
}
return checksum, nil
}