org.hibernate.engine.transaction.jta.platform.internal.JBossStandAloneJtaPlatform.java Source code

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Here is the source code for org.hibernate.engine.transaction.jta.platform.internal.JBossStandAloneJtaPlatform.java

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.engine.transaction.jta.platform.internal;

import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;

import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
import org.hibernate.engine.transaction.jta.platform.spi.JtaPlatformException;

/**
 * Return a standalone JTA transaction manager for JBoss (Arjuna) Transactions or WildFly transaction client
 * Known to work for org.jboss.jbossts:jbossjta:4.9.0.GA as well as WildFly 11+
 *
 * @author Emmanuel Bernard
 * @author Steve Ebersole
 */
public class JBossStandAloneJtaPlatform extends AbstractJtaPlatform {

    public static final String JBOSS_TM_CLASS_NAME = "com.arjuna.ats.jta.TransactionManager";
    public static final String JBOSS_UT_CLASS_NAME = "com.arjuna.ats.jta.UserTransaction";

    private static final WildFlyStandAloneJtaPlatform wildflyBasedAlternative = new WildFlyStandAloneJtaPlatform();

    @Override
    protected TransactionManager locateTransactionManager() {
        //Try WildFly first as it's the "new generation":
        try {
            return wildflyBasedAlternative.locateTransactionManager();
        } catch (Exception ignore) {
            // ignore and look for Arjuna class
        }

        try {
            final Class jbossTmClass = serviceRegistry().getService(ClassLoaderService.class)
                    .classForName(JBOSS_TM_CLASS_NAME);
            return (TransactionManager) jbossTmClass.getMethod("transactionManager").invoke(null);
        } catch (Exception e) {
            throw new JtaPlatformException("Could not obtain JBoss Transactions transaction manager instance", e);
        }
    }

    @Override
    protected UserTransaction locateUserTransaction() {
        //Try WildFly first as it's the "new generation":
        try {
            return wildflyBasedAlternative.locateUserTransaction();
        } catch (Exception ignore) {
            // ignore and look for Arjuna class
        }

        try {
            final Class jbossUtClass = serviceRegistry().getService(ClassLoaderService.class)
                    .classForName(JBOSS_UT_CLASS_NAME);
            return (UserTransaction) jbossUtClass.getMethod("userTransaction").invoke(null);
        } catch (Exception e) {
            throw new JtaPlatformException("Could not obtain JBoss Transactions user transaction instance", e);
        }
    }
}