docs/modules/ROOT/pages/reference/extensions/jta.adoc

// Do not edit directly!
// This file was generated by camel-quarkus-maven-plugin:update-extension-doc-page
= JTA
:page-aliases: extensions/jta.adoc
:linkattrs:
:cq-artifact-id: camel-quarkus-jta
:cq-native-supported: true
:cq-status: Stable
:cq-status-deprecation: Stable
:cq-description: Enclose Camel routes in transactions using Java Transaction API (JTA) and Narayana transaction manager
:cq-deprecated: false
:cq-jvm-since: 1.0.0
:cq-native-since: 1.0.0

[.badges]
[.badge-key]##JVM since##[.badge-supported]##1.0.0## [.badge-key]##Native since##[.badge-supported]##1.0.0##

Enclose Camel routes in transactions using Java Transaction API (JTA) and Narayana transaction manager

== What's inside

* xref:{cq-camel-components}:others:jta.adoc[JTA]

Please refer to the above link for usage and configuration details.

== Maven coordinates

https://code.quarkus.io/?extension-search=camel-quarkus-jta[Create a new project with this extension on code.quarkus.io, window="_blank"]

Or add the coordinates to your existing project:

[source,xml]
----
<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-jta</artifactId>
</dependency>
----

Check the xref:user-guide/index.adoc[User guide] for more information about writing Camel Quarkus applications.

== Usage

This extension should be added when you need to use the `transacted()` EIP in the router. It leverages the transaction capabilities provided by the narayana-jta extension in Quarkus. 

Refer to the https://quarkus.io/guides/transaction[Quarkus Transaction guide] for the more details about transaction support. For a simple usage:

[source,java]
----
from("direct:transaction")
    .transacted()
    .to("sql:INSERT INTO A TABLE ...?dataSource=ds1")
    .to("sql:INSERT INTO A TABLE ...?dataSource=ds2")
    .log("all data are in the ds1 and ds2")
----

Support is provided for various transaction policies.

[cols="50,.^50]
|===
|Policy | Description

| `PROPAGATION_MANDATORY`

| Support a current transaction; throw an exception if no current transaction exists.

| `PROPAGATION_NEVER`

| Do not support a current transaction; throw an exception if a current transaction exists.

| `PROPAGATION_NOT_SUPPORTED`

| Do not support a current transaction; rather always execute non-transactionally.

| `PROPAGATION_REQUIRED`

| Support a current transaction; create a new one if none exists.

| `PROPAGATION_REQUIRES_NEW`

| Create a new transaction, suspending the current transaction if one exists.

| `PROPAGATION_SUPPORTS`

| Support a current transaction; execute non-transactionally if none exists.

|===