/*
* Copyright 2003 Federal Chancellery Austria
* MOA-SPSS has been developed in a cooperation between BRZ, the Federal
* Chancellery Austria - ICT staff unit, and Graz University of Technology.
*
* Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
* the European Commission - subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
* http://www.osor.eu/eupl/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the Licence is distributed on an "AS IS" basis,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the Licence for the specific language governing permissions and
* limitations under the Licence.
*
* This product combines work with different licenses. See the "NOTICE" text
* file for details on the various modules and licenses.
* The "NOTICE" text file is part of the distribution. Any derivative works
* that you distribute must include a readable copy of the "NOTICE" text file.
*/
package at.gv.egovernment.moa.spss.server.transaction;
/**
* Provides each thread with an instance of TransactionContext
.
*
* The single instance of the TransactionContextManager
should be
* used to access contextual information for each web service transaction, e.g.
* the transaction ID, MOA configuration, client certificate, etc.
*
* @author Stefan Knirsch
* @author Patrick Peck
*/
public class TransactionContextManager {
/** The single instance of TransactionContextManager
*/
private static TransactionContextManager instance = null;
/** Contains a single TransactionContext
for each thread. */
private ThreadLocal context = null;
/**
* Get the single instance of TransactionContextManager
.
*
* @return The single instanc of TransactionContextManager
.
*/
public static synchronized TransactionContextManager getInstance() {
if (instance == null) {
instance = new TransactionContextManager();
}
return instance;
}
/**
* Creates a new TransactionContextManager
.
*
* Protected to disallow direct instantiation.
*/
protected TransactionContextManager() {
context = new ThreadLocal();
}
/**
* Set the TransactionContext
for the current thread.
*
* @param txContext The TransactionContext
for this thread.
*/
public void setTransactionContext(TransactionContext txContext) {
context.set(txContext);
}
/**
* Get the TransactionContext
for the current thread.
*
* @return The TransactionContext
for the current thread or
* null
, if none has been set (or if this method is being invoked
* outside the bounds of a transaction).
*/
public TransactionContext getTransactionContext() {
return (TransactionContext) context.get();
}
}