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Weld runtime packaged as an OSGi bundle

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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2008, Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jboss.weld.bean.builtin.ee;

import org.jboss.weld.exceptions.IllegalStateException;
import org.jboss.weld.manager.BeanManagerImpl;
import org.jboss.weld.transaction.spi.TransactionServices;

import javax.transaction.UserTransaction;

import static org.jboss.weld.logging.messages.BeanMessage.TRANSACTION_SERVICES_NOT_AVAILABLE;

/**
 * @author pmuir
 */
public class UserTransactionBean extends AbstractEEBean {

    private static class UserTransactionCallable extends AbstractEECallable {

        private static final long serialVersionUID = -6320641773968440920L;

        public UserTransactionCallable(BeanManagerImpl beanManager) {
            super(beanManager);
        }

        public UserTransaction call() throws Exception {
            final TransactionServices transactionServices = getBeanManager().getServices().get(TransactionServices.class);
            if (transactionServices != null) {
                return transactionServices.getUserTransaction();
            } else {
                throw new IllegalStateException(TRANSACTION_SERVICES_NOT_AVAILABLE);
            }
        }

    }

    public UserTransactionBean(BeanManagerImpl beanManager) {
        super(UserTransaction.class, new UserTransactionCallable(beanManager), beanManager);
    }

    @Override
    public String toString() {
        return "Built-in Bean [javax.transaction.UserTransaction] with qualifiers [@Default]";
    }

}