/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/search/trunk/search-impl/impl/src/java/org/sakaiproject/search/transaction/api/TransactionSequence.java $
* $Id: TransactionSequence.java 105078 2012-02-24 23:00:38Z ottenhoff@longsight.com $
***********************************************************************************
*
* Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008 The Sakai Foundation
*
* Licensed under the Educational Community 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.opensource.org/licenses/ECL-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.sakaiproject.search.transaction.api;
/**
* Generates a transaction sequence. The implementation of this interface must
* operate in thread safe fashon over the entire cluster returning the next id
* in the sequence at all times.
*
* @author ieb
*/
public interface TransactionSequence
{
/**
* This returns a safe clusterwide id
*
* @return
*/
long getNextId();
/**
* This retuns the next id for the local JVM
*
* @return
*/
long getLocalId();
}