snapshot of https://github.com/ent/ent.git (master, 2026-09-15; blobs > 131072B omitted)

entc/gen/template/dialect/sql/tx.tmpl

@@ -0,0 +1,31 @@
+{{/*
+Copyright 2019-present Facebook Inc. All rights reserved.
+This source code is licensed under the Apache 2.0 license found
+in the LICENSE file in the root directory of this source tree.
+*/}}
+
+{{/* gotype: entgo.io/ent/entc/gen.Graph */}}
+
+{{ define "dialect/sql/txoptions" }}
+// BeginTx returns a transactional client with specified options.
+func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error) {
+	if _, ok := c.driver.(*txDriver); ok {
+		return nil, errors.New("ent: cannot start a transaction within a transaction")
+	}
+	tx, err := c.driver.(interface {
+		BeginTx(context.Context, *sql.TxOptions) (dialect.Tx, error)
+	}).BeginTx(ctx, opts)
+	if err != nil {
+		return nil, fmt.Errorf("ent: starting a transaction: %w", err)
+	}
+	cfg := c.config
+	cfg.driver = &txDriver{tx: tx, drv: c.driver}
+	return &Tx{
+		ctx: ctx,
+		config: cfg,
+		{{- range $n := $.Nodes }}
+			{{ $n.Name }}: New{{ $n.ClientName }}(cfg),
+		{{- end }}
+	}, nil
+}
+{{ end }}