org.topazproject.otm.impl.TransactionImpl.java Source code

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Here is the source code for org.topazproject.otm.impl.TransactionImpl.java

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/* $HeadURL::                                                                            $
 * $Id$
 *
 * Copyright (c) 2007-2008 by Topaz, Inc.
 * http://topazproject.org
 *
 * 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.topazproject.otm.impl;

import javax.transaction.Status;
import javax.transaction.Transaction;

import org.topazproject.otm.Session;
import org.topazproject.otm.OtmException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Implement local Transaction as a wrapper around a jta transaction.
 *
 * @author Pradeep Krishnan
 */
public class TransactionImpl implements org.topazproject.otm.Transaction {
    private static final Log log = LogFactory.getLog(TransactionImpl.class);

    private final Session session;
    private final Transaction jtaTxn;

    /**
     * Creates a new Transaction object.
     *
     * @param session the owning session
     * @param jtaTxn  the underlying jta transaction
     */
    public TransactionImpl(Session session, Transaction jtaTxn) {
        this.session = session;
        this.jtaTxn = jtaTxn;

        if (log.isDebugEnabled())
            log.debug("Started local transaction " + this + " for session " + session);
    }

    public Session getSession() {
        return session;
    }

    public Transaction getJtaTransaction() {
        return jtaTxn;
    }

    public void setRollbackOnly() throws OtmException {
        if (log.isDebugEnabled())
            log.debug("Setting rollback-only on transaction " + this);

        try {
            jtaTxn.setRollbackOnly();
        } catch (Exception e) {
            throw new OtmException("Error setting rollback-only", e);
        }
    }

    public boolean isRollbackOnly() throws OtmException {
        try {
            return (jtaTxn.getStatus() == Status.STATUS_MARKED_ROLLBACK);
        } catch (Exception e) {
            throw new OtmException("Error getting rollback-only status", e);
        }
    }

    public void commit() throws OtmException {
        if (log.isDebugEnabled())
            log.debug("Committing transaction " + this);

        try {
            jtaTxn.commit();
        } catch (Exception e) {
            throw new OtmException("Error committing transaction", e);
        }
    }

    public void rollback() throws OtmException {
        if (log.isDebugEnabled())
            log.debug("Rolling back transaction " + this);

        try {
            jtaTxn.rollback();
        } catch (Exception e) {
            throw new OtmException("Error rolling back transaction", e);
        }
    }
}