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eFaps is a framework used to map objects with or without attached files to a relational database and optional file systems (only for attaches files). Configurable access control can be provided down to object and attribute level depending on implementation and use case. Depending on requirements, events (like triggers) allow to implement business logic and to separate business logic from user interface. The framework includes integrations (e.g. webdav, full text search) and a web application as 'simple' configurable user interface. Some best practises, example web application modules (e.g. team work module) support administrators and implementers using this framework.

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/*
 * Copyright 2003 - 2011 The eFaps Team
 *
 * 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.
 *
 * Revision:        $Rev: 6235 $
 * Last Changed:    $Date: 2011-02-24 20:55:56 -0500 (Thu, 24 Feb 2011) $
 * Last Changed By: $Author: [email protected] $
 */

package org.efaps.db.transaction;

import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.NotSupportedException;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;

import org.efaps.db.Context;
import org.efaps.util.EFapsException;

/**
 * Delegate a UserTransaction to the TransactionManager used by the Context.
 *
 * @author The eFaps Team
 * @version $Id: DelegatingUserTransaction.java 6235 2011-02-25 01:55:56Z [email protected] $
 */
public class DelegatingUserTransaction
    implements UserTransaction
{

    /**
     * TransactionManager.
     */
    private final TransactionManager transmanager;

    /**
     * Constructor.
     *
     * @param _manager TransactionManager
     */
    public DelegatingUserTransaction(final TransactionManager _manager)
    {
        this.transmanager = _manager;
    }

    /**
     * @see javax.transaction.UserTransaction#begin()
     * @throws NotSupportedException on error
     * @throws SystemException on error
     */
    @Override
    public void begin()
        throws NotSupportedException, SystemException
    {
        try {
            Context.begin("QuartzTrigger", false);
        } catch (final EFapsException e) {
            try {
                if (Context.isTMActive()) {
                    Context.getThreadContext().close();
                }
            } catch (final EFapsException e1) {
                throw new SystemException(e1.getMessage());
            }
            throw new SystemException(e.getMessage());
        }
    }

    /**
     * Commit.
     *
     * @see javax.transaction.UserTransaction#commit()
     * @throws HeuristicMixedException on error
     * @throws HeuristicRollbackException on error
     * @throws RollbackException on error
     * @throws SystemException on error
     */
    @Override
    public void commit()
        throws HeuristicMixedException,
               HeuristicRollbackException,
               RollbackException,
               SystemException
    {
        try {
            if (!Context.isTMNoTransaction()) {
                if (Context.isTMActive()) {
                    Context.commit();
                } else {
                    Context.rollback();
                }
            }
        } catch (final EFapsException e) {
            throw new SystemException(e.getMessage());
        }
    }

    /**
     * @see javax.transaction.UserTransaction#getStatus()
     * @return Status of the TransactionManager.
     * @throws SystemException on error
     */
    @Override
    public int getStatus()
        throws SystemException
    {
        return this.transmanager.getStatus();
    }

    /**
     * Rollback.
     *
     * @see javax.transaction.UserTransaction#rollback()
     * @throws SystemException on error
     */
    @Override
    public void rollback()
        throws SystemException
    {
        try {
            Context.rollback();
        } catch (final EFapsException e) {
            throw new SystemException(e.getMessage());
        }
    }

    /**
     * Set rollback.
     *
     * @see javax.transaction.UserTransaction#setRollbackOnly()
     * @throws SystemException on error
     */
    @Override
    public void setRollbackOnly()
        throws SystemException
    {
        this.transmanager.setRollbackOnly();
    }

    /**
     * @see javax.transaction.UserTransaction#setTransactionTimeout(int)
     * @param _timeOut TimeOut
     * @throws SystemException on error
     */
    @Override
    public void setTransactionTimeout(final int _timeOut)
        throws SystemException
    {
        this.transmanager.setTransactionTimeout(_timeOut);
    }
}