sqlc/internal/codegen/golang/templates/stdlib/dbCode.tmpl at 29949b990a40555783d1ba13cbb3a5c6dd098a92 · Eyal-Shalev/sqlc · GitHub

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{{define "dbCodeTemplateStd"}}
type DBTX interface {
{{- if .EmitBegin }}
	BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error)
{{end}}
	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
	PrepareContext(context.Context, string) (*sql.Stmt, error)
	QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
}

{{ if .EmitMethodsWithDBArgument}}
func New() *Queries {
	return &Queries{}
{{- else -}}
func New(db DBTX) *Queries {
	return &Queries{db: db}
{{- end}}
}

{{if .EmitPreparedQueries}}
func Prepare(ctx context.Context, db DBTX) (*Queries, error) {
	q := Queries{db: db}
	var err error
	{{- if eq (len .GoQueries) 0 }}
	_ = err
	{{- end }}
	{{- range .GoQueries }}
	if q.{{.FieldName}}, err = db.PrepareContext(ctx, {{.ConstantName}}); err != nil {
		return nil, fmt.Errorf("error preparing query {{.MethodName}}: %w", err)
	}
	{{- end}}
	return &q, nil
}

func (q *Queries) Close() error {
	var err error
	{{- range .GoQueries }}
	if q.{{.FieldName}} != nil {
		if cerr := q.{{.FieldName}}.Close(); cerr != nil {
			err = fmt.Errorf("error closing {{.FieldName}}: %w", cerr)
		}
	}
	{{- end}}
	return err
}

func (q *Queries) exec(ctx context.Context, stmt *sql.Stmt, query string, args ...interface{}) (sql.Result, error) {
	switch {
	case stmt != nil && q.tx != nil:
		return q.tx.StmtContext(ctx, stmt).ExecContext(ctx, args...)
	case stmt != nil:
		return stmt.ExecContext(ctx, args...)
	default:
		return q.db.ExecContext(ctx, query, args...)
	}
}

func (q *Queries) query(ctx context.Context, stmt *sql.Stmt, query string, args ...interface{}) (*sql.Rows, error) {
	switch {
	case stmt != nil && q.tx != nil:
		return q.tx.StmtContext(ctx, stmt).QueryContext(ctx, args...)
	case stmt != nil:
		return stmt.QueryContext(ctx, args...)
	default:
		return q.db.QueryContext(ctx, query, args...)
	}
}

func (q *Queries) queryRow(ctx context.Context, stmt *sql.Stmt, query string, args ...interface{}) (*sql.Row) {
	switch {
	case stmt != nil && q.tx != nil:
		return q.tx.StmtContext(ctx, stmt).QueryRowContext(ctx, args...)
	case stmt != nil:
		return stmt.QueryRowContext(ctx, args...)
	default:
		return q.db.QueryRowContext(ctx, query, args...)
	}
}
{{end}}

type Queries struct {
    {{- if not .EmitMethodsWithDBArgument}}
	db DBTX
    {{- end}}

    {{- if .EmitPreparedQueries}}
	tx         *sql.Tx
	{{- range .GoQueries}}
	{{.FieldName}}  *sql.Stmt
	{{- end}}
	{{- end}}
}

{{if not .EmitMethodsWithDBArgument}}
func (q *Queries) WithTx(tx *sql.Tx) *Queries {
	return &Queries{
		db: tx,
     	{{- if .EmitPreparedQueries}}
		tx: tx,
		{{- range .GoQueries}}
		{{.FieldName}}: q.{{.FieldName}},
		{{- end}}
		{{- end}}
	}
}
{{- if .EmitBegin }}
func (q *Queries) BeginTx(ctx context.Context, opts driver.TxOptions) (*Queries, error) {
	tx, err := q.db.BeginTx(ctx, opts)
	if (err != nil {
		return nil, err
	}
	return q.WithTx(tx), nil
}
{{end}}
{{end}}
{{end}}