/**
*
* Copyright 2004 Protique Ltd
*
* 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.codehaus.activemq.store.jdbm;
import jdbm.btree.BTree;
import jdbm.helper.Tuple;
import jdbm.helper.TupleBrowser;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.codehaus.activemq.message.ActiveMQXid;
import org.codehaus.activemq.service.Transaction;
import org.codehaus.activemq.service.TransactionManager;
import org.codehaus.activemq.store.PreparedTransactionStore;
import javax.jms.JMSException;
import javax.transaction.xa.XAException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* @version $Revision: 1.1 $
*/
public class JdbmPreparedTransactionStore implements PreparedTransactionStore {
private static final Log log = LogFactory.getLog(JdbmPreparedTransactionStore.class);
private BTree database;
public JdbmPreparedTransactionStore(BTree database) {
this.database = database;
}
public ActiveMQXid[] getXids() throws XAException {
try {
List list = new ArrayList();
Tuple tuple = new Tuple();
TupleBrowser iter = database.browse();
while (iter.getNext(tuple)) {
list.add(tuple.getKey());
}
ActiveMQXid[] answer = new ActiveMQXid[list.size()];
list.toArray(answer);
return answer;
}
catch (IOException e) {
throw new XAException("Failed to recover Xids. Reason: " + e);
}
}
public void remove(ActiveMQXid xid) throws XAException {
try {
database.remove(xid);
}
catch (IOException e) {
throw new XAException("Failed to remove: " + xid + ". Reason: " + e);
}
}
public void put(ActiveMQXid xid, Transaction transaction) throws XAException {
try {
database.insert(xid, transaction, true);
}
catch (IOException e) {
throw new XAException("Failed to add: " + xid + " for transaction: " + transaction + ". Reason: " + e);
}
}
public void loadPreparedTransactions(TransactionManager transactionManager) throws XAException {
log.info("Recovering prepared transactions");
try {
Tuple tuple = new Tuple();
TupleBrowser iter = database.browse();
while (iter.getNext(tuple)) {
ActiveMQXid xid = (ActiveMQXid) tuple.getKey();
Transaction transaction = (Transaction) tuple.getValue();
transactionManager.loadTransaction(xid, transaction);
}
}
catch (IOException e) {
log.error("Failed to recover prepared transactions: " + e, e);
throw new XAException("Failed to recover prepared transactions. Reason: " + e);
}
}
public void start() throws JMSException {
}
public void stop() throws JMSException {
}
}