Integrated Clustering Integrating with Spring Configuring Hazelcast Transaction Manager

Sample Code: Please see our sample application for Hazelcast Transaction Manager in our code samples repository.

Starting with Hazelcast 3.7, you can get rid of the boilerplate code to begin, commit or rollback transactions by using HazelcastTransactionManager which is a PlatformTransactionManager implementation to be used with Spring Transaction API.

Sample Configuration for Hazelcast Transaction Manager

You need to register HazelcastTransactionManager as your transaction manager implementation and also you need to register ManagedTransactionalTaskContext to access transactional data structures within your service class.

...
<hz:hazelcast id="instance">
      ...
</hz:hazelcast>
...
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager" class="com.hazelcast.spring.transaction.HazelcastTransactionManager">
    <constructor-arg ref="instance"/>
</bean>
<bean id="transactionalContext" class="com.hazelcast.spring.transaction.ManagedTransactionalTaskContext">
    <constructor-arg ref="transactionManager"/>
</bean>
<bean id="YOUR_SERVICE" class="YOUR_SERVICE_CLASS">
    <property name="transactionalTaskContext" ref="transactionalContext"/>
</bean>
...

Sample Transactional Method

public class ServiceWithTransactionalMethod {

    private TransactionalTaskContext transactionalTaskContext;

    @Transactional
    public void transactionalPut(String key, String value) {
        transactionalTaskContext.getMap("testMap").put(key, value);
    }

    ...
}

After marking your method as Transactional either declaratively or by annotation and accessing the data structure through the TransactionalTaskContext, HazelcastTransactionManager will begin, commit or rollback the transaction for you.