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// SPDX-FileCopyrightText: 2026 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: Apache-2.0
package pgruntime
import (
"context"
"database/sql"
"strings"
"go.xyrillian.de/gg/errext"
"go.xyrillian.de/gg/gsql"
)
// Convenience function for executing a one-off SQL query returning no rows.
// TODO: move to gsql
func execQuery(ctx context.Context, db gsql.Handle, query string, args []any) (sql.Result, error) {
stmt, err := db.GSQLPrepare(ctx, query, false)
if err != nil {
return nil, err
}
result, err := stmt.Exec(ctx, args)
return result, errext.WithCleanup(err, "stmt.Close", stmt.Close())
}
// Convenience function for executing a one-off SQL query returning one row.
func queryRow(ctx context.Context, db gsql.Handle, query string, args, slots []any) error {
stmt, err := db.GSQLPrepare(ctx, query, false)
if err != nil {
return err
}
err = stmt.QueryRow(ctx, args, slots)
return errext.WithCleanup(err, "stmt.Close", stmt.Close())
}
// Convenience function for executing a one-off SQL query returning one value.
// TODO: move to gsql
func selectOneValue[T any](ctx context.Context, db gsql.Handle, query string, args ...any) (T, error) {
stmt, err := db.GSQLPrepare(ctx, query, false)
if err != nil {
var none T
return none, err
}
var result T
err = stmt.QueryRow(ctx, args, []any{&result})
return result, errext.WithCleanup(err, "stmt.Close", stmt.Close())
}
// Convenience function for executing a one-off SQL query returning several single-column rows.
// TODO: move to gsql (and also add ForeachValue with a callback instead of a slice return, maybe even ForeachPair and ForeachTriple)
func selectSeveralValues[T any](ctx context.Context, db gsql.Handle, query string, args ...any) ([]T, error) {
rows, err := db.GSQLQuery(ctx, query, args)
if err != nil {
return nil, err
}
var result []T
for rows.Next() {
// TODO: this should share growRecordSlice() from Oblast to optimize allocations
var value T
err := rows.Scan(&value)
if err != nil {
return nil, errext.WithCleanup(err, "rows.Close", rows.Close())
}
result = append(result, value)
}
return result, errext.WithCleanup(nil, "rows.Err", rows.Err())
}
// Convenience function for preparing an identifier that needs to be inserted into a query verbatim
// (e.g. a database name for CREATE DATABASE).
func quoteIdentifier(name string) string {
return `"` + strings.ReplaceAll(name, `"`, `""`) + `"`
}
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