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TransactionServices provides access to the TransactionManager and the UserTransaction (See JTA specification for details).
Table 60.1. List methods
| getTransactionManager() | Get used TransactionManager |
| getUserTransaction() | Get UserTransaction on TransactionManager |
| getDefaultTimeout() | Return default TimeOut |
| setTransactionTimeout(int seconds) | Set TimeOut in second |
| enlistResource(XAResource xares) | Enlist XA resource in TransactionManager |
| delistResource(XAResource xares) | Delist XA resource from TransactionManager |
eXo JCR proposes out of the box several implementations, they all implement the abstract class org.exoplatform.services.transaction.impl.AbstractTransactionService. This main class implement the biggest part of all the methods proposed by the TransactionService. For each sub-class of AbstractTransactionService, you can set the transaction timeout by configuration using the value parameter timeout that is expressed in seconds.
To use JOTM as TransactionManager in standalone mode, simply add the following component configuration:
<component>
<key>org.exoplatform.services.transaction.TransactionService</key>
<type>org.exoplatform.services.transaction.impl.jotm.TransactionServiceJotmImpl</type>
<!-- Uncomment the lines below if you want to set default transaction timeout that is expressed in seconds -->
<!--init-params>
<value-param>
<name>timeout</name>
<value>60</value>
</value-param>
</init-params-->
</component>If you intend to use JBoss Cache, you can use a generic TransactionService based on its TransactionManagerLookup which is able to automatically find the TransactionManager of several Application Servers thanks to a set of JNDI lookups. This generic TransactionService covers mainly the TransactionManager lookups, the UserTransaction is actually simply the TransactionManager instance that has been wrapped. See below an example of configuration:
<!-- Configuration of the TransactionManagerLookup -->
<component>
<key>org.jboss.cache.transaction.TransactionManagerLookup</key>
<type>org.jboss.cache.transaction.GenericTransactionManagerLookup</type>
</component>
<!-- Configuration of the TransactionService -->
<component>
<key>org.exoplatform.services.transaction.TransactionService</key>
<type>org.exoplatform.services.transaction.jbosscache.GenericTransactionService</type>
<!-- Uncomment the lines below if you want to set default transaction timeout that is expressed in seconds -->
<!--init-params>
<value-param>
<name>timeout</name>
<value>60</value>
</value-param>
</init-params-->
</component>If you intend to use JBoss Cache with Arjuna, you can use a more specific GenericTransactionService, it is mostly interesting in case you want to use the real UserTransaction. See below an example of configuration:
<!-- Configuration of the TransactionManagerLookup -->
<component>
<key>org.jboss.cache.transaction.TransactionManagerLookup</key>
<type>org.jboss.cache.transaction.JBossStandaloneJTAManagerLookup</type>
</component>
<!-- Configuration of the TransactionService -->
<component>
<key>org.exoplatform.services.transaction.TransactionService</key>
<type>org.exoplatform.services.transaction.jbosscache.JBossTransactionsService</type>
<!-- Uncomment the lines below if you want to set default transaction timeout that is expressed in seconds -->
<!--init-params>
<value-param>
<name>timeout</name>
<value>60</value>
</value-param>
</init-params-->
</component>If you intend to use Infinispan, you can use a generic TransactionService based on its TransactionManagerLookup which is able to automatically find the TransactionManager of several Application Servers thanks to a set of JNDI lookups. This generic TransactionService covers mainly the TransactionManager lookups, the UserTransaction is actually simply the TransactionManager instance that has been wrapped. See below an example of configuration:
<!-- Configuration of the TransactionManagerLookup -->
<component>
<key>org.infinispan.transaction.lookup.TransactionManagerLookup</key>
<type>org.infinispan.transaction.lookup.GenericTransactionManagerLookup</type>
</component>
<!-- Configuration of the TransactionService -->
<component>
<key>org.exoplatform.services.transaction.TransactionService</key>
<type>org.exoplatform.services.transaction.infinispan.GenericTransactionService</type>
<!-- Uncomment the lines below if you want to set default transaction timeout that is expressed in seconds -->
<!--init-params>
<value-param>
<name>timeout</name>
<value>60</value>
</value-param>
</init-params-->
</component>If you intend to use Infinispan with Arjuna, you can use a more specific GenericTransactionService, it is mostly interesting in case you want to use the real UserTransaction. See below an example of configuration:
<!-- Configuration of the TransactionManagerLookup -->
<component>
<key>org.infinispan.transaction.lookup.TransactionManagerLookup</key>
<type>org.infinispan.transaction.lookup.JBossStandaloneJTAManagerLookup</type>
</component>
<!-- Configuration of the TransactionService -->
<component>
<key>org.exoplatform.services.transaction.TransactionService</key>
<type>org.exoplatform.services.transaction.infinispan.JBossTransactionsService</type>
<!-- Uncomment the lines below if you want to set default transaction timeout that is expressed in seconds -->
<!--init-params>
<value-param>
<name>timeout</name>
<value>60</value>
</value-param>
</init-params-->
</component>If you intend to use JBoss AS with JBoss Cache and Infinispan, you can use a very specific TransactionService for JBoss AS. See below an example of configuration:
<component>
<key>org.exoplatform.services.transaction.TransactionService</key>
<type>org.exoplatform.services.transaction.impl.jboss.JBossTransactionService</type>
<!-- Uncomment the lines below if you want to set default transaction timeout that is expressed in seconds -->
<!--init-params>
<value-param>
<name>timeout</name>
<value>60</value>
</value-param>
</init-params-->
</component>To use TransactionsEssentials as TransactionManager in standalone mode, simply add the following component configuration:
<component>
<key>org.exoplatform.services.transaction.TransactionService</key>
<type>org.exoplatform.services.transaction.impl.atomikos.TransactionsEssentialsTransactionService</type>
<!-- Uncomment the lines below if you want to set default transaction timeout that is expressed in seconds -->
<!--init-params>
<value-param>
<name>timeout</name>
<value>60</value>
</value-param>
</init-params-->
</component>