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Chapter 43. JTA

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

43.1. What’s inside
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Please refer to the above link for usage and configuration details.

43.2. Maven coordinates
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Create a new project with this extension on code.quarkus.redhat.com

Or add the coordinates to your existing project: 

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-jta</artifactId>
</dependency>
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43.3. Usage
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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 Quarkus Transaction guide for the more details about transaction support. For a simple usage: 

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")
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Support is provided for various transaction policies.

Expand
PolicyDescription

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.

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