org.eclipse.jetty.ee8.plus.jndi.Transaction Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jetty-ee8-plus Show documentation
Jetty JavaEE style services
There is a newer version: 12.1.0.alpha0
//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.ee8.plus.jndi;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.LinkRef;
import javax.naming.NameNotFoundException;
import javax.naming.NamingException;
import javax.transaction.UserTransaction;
import org.eclipse.jetty.plus.jndi.NamingEntry;
import org.eclipse.jetty.plus.jndi.NamingEntryUtil;
import org.eclipse.jetty.util.jndi.NamingUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Transaction
 *
 * Class to represent a JTA UserTransaction impl.
 */
public class Transaction extends NamingEntry {

    private static final Logger LOG = LoggerFactory.getLogger(Transaction.class);

    public static final String USER_TRANSACTION = "UserTransaction";

    public static void bindTransactionToENC(String scope) throws NamingException {
        NamingEntry txEntry = NamingEntryUtil.lookupNamingEntry(scope, Transaction.USER_TRANSACTION);
        if (txEntry instanceof Transaction) {
            ((Transaction) txEntry).bindToComp();
        } else {
            throw new NameNotFoundException(USER_TRANSACTION + " not found");
        }
    }

    /**
     * @param scope the environment in which to bind the UserTransaction
     * @param userTransaction The {@link UserTransaction}
     * @throws NamingException if there was a problem re
     */
    public Transaction(String scope, UserTransaction userTransaction) throws NamingException {
        super(scope, USER_TRANSACTION, userTransaction);
    }

    /**
     * Allow other bindings of UserTransaction.
     *
     * These should be in ADDITION to java:comp/UserTransaction
     *
     * @see NamingEntry#bindToENC(java.lang.String)
     */
    @Override
    public void bindToENC(String localName) throws NamingException {
        InitialContext ic = new InitialContext();
        Context env = (Context) ic.lookup("java:comp/env");
        if (LOG.isDebugEnabled())
            LOG.debug("Binding java:comp/env{} to {}", getJndiName(), _objectNameString);
        NamingUtil.bind(env, localName, new LinkRef(_objectNameString));
    }

    /**
     * Insist on the java:comp/UserTransaction binding
     */
    private void bindToComp() throws NamingException {
        //ignore the name, it is always bound to java:comp
        InitialContext ic = new InitialContext();
        Context env = (Context) ic.lookup("java:comp");
        if (LOG.isDebugEnabled())
            LOG.debug("Binding java:comp/{} to {}", getJndiName(), _objectNameString);
        NamingUtil.bind(env, getJndiName(), new LinkRef(_objectNameString));
    }

    /**
     * Unbind this Transaction from a java:comp
     */
    @Override
    public void unbindENC() {
        try {
            InitialContext ic = new InitialContext();
            Context env = (Context) ic.lookup("java:comp");
            if (LOG.isDebugEnabled())
                LOG.debug("Unbinding java:comp/{}", getJndiName());
            env.unbind(getJndiName());
        } catch (NamingException e) {
            LOG.warn("Unable to unbind java:comp/{}", getJndiName(), e);
        }
    }
}