org.openmdx.base.persistence.spi.Transactions Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: Transactions
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2012, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.base.persistence.spi;
import javax.jdo.JDOFatalInternalException;
import javax.jdo.Transaction;
import org.openmdx.base.persistence.spi.UnitOfWork;
import org.openmdx.kernel.loading.Classes;
/**
* Transactions
*/
public class Transactions {
/**
* Constructor
*/
private Transactions() {
// Avoid instantiation
}
/**
* The transaction factory
*/
private static TransactionFactory transactionFactory;
/**
* Retrieve transactionFactory.
*
* @return Returns the transactionFactory.
*/
private static TransactionFactory getTransactionFactory() {
if(transactionFactory == null) try {
transactionFactory = Classes.newApplicationInstance(
TransactionFactory.class,
"org.openmdx.application.persistence.adapter.TransactionAdapterFactory"
);
} catch (Exception exception) {
throw new JDOFatalInternalException(
"Transaction factory acquisition failure",
exception
);
}
return transactionFactory;
}
/**
* Create a transaction adapter
*
* @param unitOfWork the unit of worked to be wrapped
*
* @return a transaction adapter for the given unit of work
*/
public static Transaction toTransaction(
UnitOfWork unitOfWork
){
return getTransactionFactory().toTransaction(unitOfWork);
}
}