fix problems with OracleDB and configuration storage implementation

1 files changed, 333 insertions, 236 deletions

diff --git a/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/storage/AuthenticationSessionStoreage.java b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/storage/AuthenticationSessionStoreage.java
index 4b4b5ddc5..829383cb4 100644
--- a/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/storage/AuthenticationSessionStoreage.java
+++ b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/storage/AuthenticationSessionStoreage.java
@@ -206,26 +206,34 @@ public class AuthenticationSessionStoreage {
 		Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getSessionWithID");
-			  query.setParameter("sessionid", moaSessionID);
-			  result = query.list();
-
-		  
-			  Logger.trace("Found entries: " + result.size());
+		  Transaction tx = null;
+		  try {
+			  synchronized (session) {
+				  
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getSessionWithID");
+				  query.setParameter("sessionid", moaSessionID);
+				  result = query.list();
+	
 			  
-			  //Assertion requires an unique artifact
-			  if (result.size() != 1) {
-				 Logger.trace("No entries found.");
-			   	throw new MOADatabaseException("No session found with this sessionID");
+				  Logger.trace("Found entries: " + result.size());
+				  
+				  //Assertion requires an unique artifact
+				  if (result.size() != 1) {
+					 Logger.trace("No entries found.");
+				   	throw new MOADatabaseException("No session found with this sessionID");
+				  }
+				  
+				 AuthenticatedSessionStore dbsession = (AuthenticatedSessionStore) result.get(0);			 
+				 tx.commit();
+				 cleanDelete(dbsession);			
 			  }
 			  
-			 AuthenticatedSessionStore dbsession = (AuthenticatedSessionStore) result.get(0);			 
-			 session.getTransaction().commit();			  
-			 cleanDelete(dbsession);			
+		  } catch (Exception e) {
+			  if (tx != null && !tx.wasCommitted())
+				  tx.rollback();
+			  throw e;
+			  
 		  }
 				
 	}
@@ -290,28 +298,36 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getSessionWithSSOID");
-			  query.setParameter("sessionid", SSOSessionID);
-			  result = query.list();
+		  Transaction tx = null;
+		  try {		  
+			  synchronized (session) {
+
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getSessionWithSSOID");
+				  query.setParameter("sessionid", SSOSessionID);
+				  result = query.list();
 			  
-			  //send transaction
-			  session.getTransaction().commit();
-		  }
+				  //send transaction
+				  tx.commit();
+				  
+			  }
 		  
-		  Logger.trace("Found entries: " + result.size());
+			  Logger.trace("Found entries: " + result.size());
 		  
-		  //Assertion requires an unique artifact
-		  if (result.size() != 1) {
-			 Logger.trace("No entries found.");
-			 return null;
+			  //Assertion requires an unique artifact
+			  if (result.size() != 1) {
+				  Logger.trace("No entries found.");
+				  return null;
 					 
-		  } else {
-			  return result.get(0).getSessionid();
+			  } else {
+				  return result.get(0).getSessionid();
 			 
-		  }		  
+			  }
+		  } catch (Exception e) {
+			  if (tx != null && !tx.wasCommitted())
+				  tx.rollback();
+			  throw e;
+		  }
 	}
 	
 	public static boolean isSSOSession(String sessionID) throws MOADatabaseException {
@@ -331,27 +347,33 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getSessionWithSSOID");
-			  query.setParameter("sessionid", SSOId);
-			  result = query.list();
+		  Transaction tx = null;
+		  try {	
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getSessionWithSSOID");
+				  query.setParameter("sessionid", SSOId);
+				  result = query.list();
+				  
+				  //send transaction
+				  tx.commit();
+			  }
+			  
+			  Logger.trace("Found entries: " + result.size());
 			  
-			  //send transaction
-			  session.getTransaction().commit();
+			  //Assertion requires an unique artifact
+			  if (result.size() != 1) {
+				 Logger.trace("No entries found.");
+				 return null;
+						 
+			  } else {
+				  return result.get(0);
+			  }
+		  } catch (Exception e) {
+			  if (tx != null && !tx.wasCommitted())
+				  tx.rollback();
+			  throw e;
 		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() != 1) {
-			 Logger.trace("No entries found.");
-			 return null;
-					 
-		  } else {
-			  return result.get(0);
-		  }		
 	}
 	
 	public static void addSSOInformation(String moaSessionID, String SSOSessionID, 
@@ -453,13 +475,15 @@ public class AuthenticationSessionStoreage {
 			
 		} catch(HibernateException e) {
 	  		Logger.warn("Error during database saveOrUpdate. Rollback.", e);
-	  		 tx.rollback();
-	  		 throw new AuthenticationException("SSO Session information can not be stored!  --> SSO is deactivated", null);	
-	  	 }
+	  		if (tx != null && !tx.wasCommitted())
+	  			tx.rollback();
+	  		throw new AuthenticationException("SSO Session information can not be stored!  --> SSO is deactivated", null);	
+	  	}
 	}
 
 	public static List<OASessionStore> getAllActiveOAFromMOASession(AuthenticationSession moaSession) {
 		MiscUtil.assertNotNull(moaSession, "MOASession");
+		Session session = null;
 		
 		try {
 			List<OASessionStore> oas = new ArrayList<OASessionStore>();
@@ -467,7 +491,7 @@ public class AuthenticationSessionStoreage {
 			AuthenticatedSessionStore dbsession = searchInDatabase(moaSession.getSessionID(), false);
 			oas.addAll(dbsession.getActiveOAsessions());
 			
-			Session session = MOASessionDBUtils.getCurrentSession();
+			session = MOASessionDBUtils.getCurrentSession();
 			session.getTransaction().commit();
 			
 			return oas;
@@ -475,6 +499,14 @@ public class AuthenticationSessionStoreage {
 		} catch (MOADatabaseException e) {
 			Logger.warn("NO session information found for sessionID " + moaSession.getSessionID(), e);
 			
+		} catch (Exception e) {
+			if (session != null && session.getTransaction() != null 
+					&& !session.getTransaction().wasCommitted()) {
+				session.getTransaction().rollback();
+				throw e;
+				
+			}
+			
 		}
 				
 		return null;
@@ -482,13 +514,13 @@ public class AuthenticationSessionStoreage {
 	
 	public static List<InterfederationSessionStore> getAllActiveIDPsFromMOASession(AuthenticationSession moaSession) {
 		MiscUtil.assertNotNull(moaSession, "MOASession");
-		
+		Session session = null;
 		try {
 			List<InterfederationSessionStore> idps = new ArrayList<InterfederationSessionStore>();			
 			AuthenticatedSessionStore dbsession = searchInDatabase(moaSession.getSessionID(), false);
 			idps.addAll(dbsession.getInderfederation());
 			
-			Session session = MOASessionDBUtils.getCurrentSession();
+			session = MOASessionDBUtils.getCurrentSession();
 			session.getTransaction().commit();
 			
 			return idps;
@@ -496,6 +528,14 @@ public class AuthenticationSessionStoreage {
 		} catch (MOADatabaseException e) {
 			Logger.warn("NO session information found for sessionID " + moaSession.getSessionID(), e);
 			
+		} catch (Exception e) {
+			if (session != null && session.getTransaction() != null 
+					&& !session.getTransaction().wasCommitted()) {
+				session.getTransaction().rollback();
+				throw e;
+				
+			}
+			
 		}
 				
 		return null;
@@ -507,35 +547,42 @@ public class AuthenticationSessionStoreage {
 		  Logger.trace("Get moaSession for userNameID " + userNameID + " and OA " 
 				  + oaID + " from database.");
 		  Session session = MOASessionDBUtils.getCurrentSession();
-
-		  List<AuthenticatedSessionStore> result;
+		  Transaction tx = null;
 		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getMOASessionWithNameIDandOAID");
-			  query.setParameter("oaID", oaID);
-			  query.setParameter("nameID", userNameID);
-			  result = query.list();
+		  List<AuthenticatedSessionStore> result = null;;
+		  try {  
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getMOASessionWithNameIDandOAID");
+				  query.setParameter("oaID", oaID);
+				  query.setParameter("nameID", userNameID);
+				  result = query.list();
+				  
+				  //send transaction
+				  tx.commit();
+			  }
 			  
-			  //send transaction
-			  session.getTransaction().commit();
-		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() != 1) {
-			 Logger.trace("No unique entry found.");
-		   	 return null;
-		   	
-		  }
-		try {  		  
-			return  decryptSession(result.get(0));
+			  Logger.trace("Found entries: " + result.size());
+			  
+			  //Assertion requires an unique artifact
+			  if (result.size() != 1) {
+				 Logger.trace("No unique entry found.");
+			   	 return null;
+			   	
+			  }
+			  		  
+			  return  decryptSession(result.get(0));
 			
 		} catch (BuildException e) {
-			Logger.warn("MOASession deserialization-exception by using MOASessionID=" + result.get(0).getSessionid(), e);
+			Logger.warn("MOASession deserialization-exception by using MOASessionID=" + result.get(0).getSessionid(), e);			
 			return null;
+			
+		} catch (Exception e) {
+			if (tx != null && !tx.wasCommitted())
+				tx.rollback();
+			throw e;
 		}
+		
 	}
 	
 	public static OASessionStore searchActiveOASSOSession(AuthenticationSession moaSession, String oaID, String protocolType) {
@@ -547,29 +594,36 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getActiveOAWithSessionIDandOAIDandProtocol");
-			  query.setParameter("sessionID", moaSession.getSessionID());
-			  query.setParameter("oaID", oaID);
-			  query.setParameter("protocol", protocolType);
-			  result = query.list();
+		  Transaction tx = null;
+		  try {
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getActiveOAWithSessionIDandOAIDandProtocol");
+				  query.setParameter("sessionID", moaSession.getSessionID());
+				  query.setParameter("oaID", oaID);
+				  query.setParameter("protocol", protocolType);
+				  result = query.list();
+				  
+				  //send transaction
+				  tx.commit();
+			  }
 			  
-			  //send transaction
-			  session.getTransaction().commit();
-		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() == 0) {
-			 Logger.trace("No entries found.");
-		   	 return null;
-		   	
-		  }
-		  
-		  return  result.get(0).getActiveOAsessions().get(0);
+			  Logger.trace("Found entries: " + result.size());
+			  
+			  //Assertion requires an unique artifact
+			  if (result.size() == 0) {
+				 Logger.trace("No entries found.");
+			   	 return null;
+			   	
+			  }
+			  
+			  return  result.get(0).getActiveOAsessions().get(0);
+			  
+		  } catch (Exception e) {
+				if (tx != null && !tx.wasCommitted())
+					tx.rollback();
+				throw e;
+			}
 	}
 	
 	public static String getPendingRequestID(String sessionID) {
@@ -584,6 +638,7 @@ public class AuthenticationSessionStoreage {
 	}
 	
 	public static AuthenticationSession getSessionWithPendingRequestID(String pedingRequestID) {
+		Transaction tx = null;
 		try {
 			  MiscUtil.assertNotNull(pedingRequestID, "pedingRequestID");	  
 			  Logger.trace("Get authenticated session with pedingRequestID " + pedingRequestID + " from database.");
@@ -592,13 +647,13 @@ public class AuthenticationSessionStoreage {
 			  List<AuthenticatedSessionStore> result;
 			  
 			  synchronized (session) {
-				  session.beginTransaction();
+				  tx  = session.beginTransaction();
 				  Query query = session.getNamedQuery("getSessionWithPendingRequestID");
 				  query.setParameter("sessionid", pedingRequestID);
 				  result = query.list();
 				  
 				  //send transaction
-				  session.getTransaction().commit();
+				  tx.commit();
 			  }
 			  
 			  Logger.trace("Found entries: " + result.size());
@@ -613,8 +668,13 @@ public class AuthenticationSessionStoreage {
 			  								
 		} catch (Throwable e) {
 			Logger.warn("MOASession deserialization-exception by using MOASessionID=" + pedingRequestID);
+			
+			if (tx != null && !tx.wasCommitted())
+				tx.rollback();
+			
 			return null;
-		}
+			
+		} 
 	}
 	
 	public static boolean deleteSessionWithPendingRequestID(String id) {
@@ -623,34 +683,39 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getSessionWithPendingRequestID");
-			  query.setParameter("sessionid", id);
-			  result = query.list();
+		  Transaction tx = null;
+		  try {
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getSessionWithPendingRequestID");
+				  query.setParameter("sessionid", id);
+				  result = query.list();
+				  
+				  //send transaction
+				  tx.commit();
+			  }
 			  
-			  //send transaction
-			  session.getTransaction().commit();
-		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() != 1) {
-			 Logger.trace("No entries found.");
-			 return false;
-					 
-		  } else {
-			  cleanDelete(result.get(0));
-			  return true;
-		  }
-		
-		
+			  Logger.trace("Found entries: " + result.size());
+			  
+			  //Assertion requires an unique artifact
+			  if (result.size() != 1) {
+				 Logger.trace("No entries found.");
+				 return false;
+						 
+			  } else {
+				  cleanDelete(result.get(0));
+				  return true;
+			  }
+		  } catch (Exception e) {
+				if (tx != null && !tx.wasCommitted())
+					tx.rollback();
+				throw e;
+		  }		
 	}
 			
 	public static AuthenticationSession getSessionWithUserNameID(String nameID) {
 		
+		Transaction tx = null;
 		try {
 			  MiscUtil.assertNotNull(nameID, "nameID");	  
 			  Logger.trace("Get authenticated session with pedingRequestID " + nameID + " from database.");
@@ -659,13 +724,13 @@ public class AuthenticationSessionStoreage {
 			  List<AuthenticatedSessionStore> result;
 			  
 			  synchronized (session) {
-				  session.beginTransaction();
+				  tx  = session.beginTransaction();
 				  Query query = session.getNamedQuery("getMOAISessionWithUserNameID");
 				  query.setParameter("usernameid", StringEscapeUtils.escapeHtml(nameID));
 				  result = query.list();
 				  
 				  //send transaction
-				  session.getTransaction().commit();
+				  tx.commit();
 			  }
 			  
 			  Logger.trace("Found entries: " + result.size());
@@ -679,7 +744,9 @@ public class AuthenticationSessionStoreage {
 			  return decryptSession(result.get(0));
 											
 		} catch (Throwable e) {
-			Logger.warn("MOASession deserialization-exception by using MOASessionID=" + nameID);
+			Logger.warn("MOASession deserialization-exception by using MOASessionID=" + nameID);			
+			if (tx != null && !tx.wasCommitted())
+				tx.rollback();
 			return null;
 		}
 		
@@ -691,27 +758,33 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getInterfederatedIDPForSSOWithSessionID");
-			  query.setParameter("sessionID", sessionID);
-			  result = query.list();
+		  Transaction tx = null;
+		  try {
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getInterfederatedIDPForSSOWithSessionID");
+				  query.setParameter("sessionID", sessionID);
+				  result = query.list();
+				  
+				  //send transaction
+				  tx.commit();
+			  }
 			  
-			  //send transaction
-			  session.getTransaction().commit();
-		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() == 0) {
-			 Logger.trace("No entries found.");
-		   	return null;
-		   	
-		  }
-		  
-		  return result.get(0).getInderfederation().get(0);
+			  Logger.trace("Found entries: " + result.size());
+			  
+			  //Assertion requires an unique artifact
+			  if (result.size() == 0) {
+				 Logger.trace("No entries found.");
+			   	return null;
+			   	
+			  }
+			  
+			  return result.get(0).getInderfederation().get(0);
+		} catch (Exception e) {
+			if (tx != null && !tx.wasCommitted())
+				tx.rollback();
+			throw e;
+		}	
 	}
 	
 	public static InterfederationSessionStore searchInterfederatedIDPFORSSOWithMOASessionIDPID(String sessionID, String idpID) {
@@ -721,28 +794,34 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getInterfederatedIDPForSSOWithSessionIDIDPID");
-			  query.setParameter("sessionID", sessionID);
-			  query.setParameter("idpID", idpID);
-			  result = query.list();
+		  Transaction tx = null;
+		  try {		  
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getInterfederatedIDPForSSOWithSessionIDIDPID");
+				  query.setParameter("sessionID", sessionID);
+				  query.setParameter("idpID", idpID);
+				  result = query.list();
+				  
+				  //send transaction
+				  tx.commit();
+			  }
 			  
-			  //send transaction
-			  session.getTransaction().commit();
-		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() == 0) {
-			 Logger.trace("No entries found.");
-		   	return null;
-		   	
-		  }
-		  
-		  return result.get(0).getInderfederation().get(0);
+			  Logger.trace("Found entries: " + result.size());
+			  
+			  //Assertion requires an unique artifact
+			  if (result.size() == 0) {
+				 Logger.trace("No entries found.");
+			   	return null;
+			   	
+			  }
+			  
+			  return result.get(0).getInderfederation().get(0);
+		  } catch (Exception e) {
+				if (tx != null && !tx.wasCommitted())
+					tx.rollback();
+				throw e;
+		  }	
 	}
 	
 	public static String createInterfederatedSession(IRequest req, boolean isAuthenticated, String ssoID) throws MOADatabaseException, AssertionAttributeExtractorExeption, BuildException {		
@@ -847,27 +926,33 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List<AuthenticatedSessionStore> result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getInterfederatedIDPForAttributeQueryWithSessionID");
-			  query.setParameter("sessionID", moaSession.getSessionID());
-			  result = query.list();
+		  Transaction tx = null;
+		  try {
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getInterfederatedIDPForAttributeQueryWithSessionID");
+				  query.setParameter("sessionID", moaSession.getSessionID());
+				  result = query.list();
+				  
+				  //send transaction
+				  tx.commit();
+			  }
 			  
-			  //send transaction
-			  session.getTransaction().commit();
-		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() == 0) {
-			 Logger.trace("No entries found.");
-		   	return null;
-		   	
-		  }
-		  
-		  return result.get(0).getInderfederation().get(0);
+			  Logger.trace("Found entries: " + result.size());
+			  
+			  //Assertion requires an unique artifact
+			  if (result.size() == 0) {
+				 Logger.trace("No entries found.");
+			   	return null;
+			   	
+			  }
+			  
+			  return result.get(0).getInderfederation().get(0);
+		} catch (Exception e) {
+			if (tx != null && !tx.wasCommitted())
+				tx.rollback();
+			throw e;
+		}	
 	}
 	
 	/**
@@ -930,28 +1015,34 @@ public class AuthenticationSessionStoreage {
 		
 		List<AuthenticatedSessionStore> results;
 		Session session = MOASessionDBUtils.getCurrentSession();
-		
-		synchronized (session) {			
-			session.beginTransaction();
-			Query query = session.getNamedQuery("getMOAISessionsWithTimeOut");
-			query.setTimestamp("timeoutcreate", expioredatecreate);
-			query.setTimestamp("timeoutupdate", expioredateupdate);
-			results = query.list();
-			session.getTransaction().commit();
-		}
-		
-		if (results.size() != 0) {
-			for(AuthenticatedSessionStore result : results) {
-				try { 
-					cleanDelete(result);
-					Logger.info("Authenticated session with sessionID=" + result.getSessionid() 
-							+ " after session timeout.");
-				
-				} catch (HibernateException e){
-					Logger.warn("Authenticated session with sessionID=" + result.getSessionid() 
-							+ " not removed after timeout! (Error during Database communication)", e);
-				}
-			}	
+		Transaction tx = null;
+		try {
+			synchronized (session) {			
+				tx = session.beginTransaction();
+				Query query = session.getNamedQuery("getMOAISessionsWithTimeOut");
+				query.setTimestamp("timeoutcreate", expioredatecreate);
+				query.setTimestamp("timeoutupdate", expioredateupdate);
+				results = query.list();
+				tx.commit();
+			}
+			
+			if (results.size() != 0) {
+				for(AuthenticatedSessionStore result : results) {
+					try { 
+						cleanDelete(result);
+						Logger.info("Authenticated session with sessionID=" + result.getSessionid() 
+								+ " after session timeout.");
+					
+					} catch (HibernateException e){
+						Logger.warn("Authenticated session with sessionID=" + result.getSessionid() 
+								+ " not removed after timeout! (Error during Database communication)", e);
+					}
+				}	
+			}
+		} catch (Exception e) {
+			if (tx != null && !tx.wasCommitted())
+				tx.rollback();
+			throw e;
 		}	
 	}
 	
@@ -1004,26 +1095,32 @@ public class AuthenticationSessionStoreage {
 		  Session session = MOASessionDBUtils.getCurrentSession();
 		  
 		  List result;
-		  
-		  synchronized (session) {
-			  session.beginTransaction();
-			  Query query = session.getNamedQuery("getSessionWithID");
-			  query.setParameter("sessionid", sessionID);
-			  result = query.list();
+		  Transaction tx = null;
+		  try {
+			  synchronized (session) {
+				  tx = session.beginTransaction();
+				  Query query = session.getNamedQuery("getSessionWithID");
+				  query.setParameter("sessionid", sessionID);
+				  result = query.list();
+				  
+				  //send transaction
+				  if (commit)
+					  tx.commit();
+			  }
 			  
-			  //send transaction
-			  if (commit)
-				  session.getTransaction().commit();
-		  }
-		  
-		  Logger.trace("Found entries: " + result.size());
-		  
-		  //Assertion requires an unique artifact
-		  if (result.size() != 1) {
-			 Logger.trace("No entries found.");
-		   	throw new MOADatabaseException("No session found with this sessionID");
-		  }
-		  
-		  return (AuthenticatedSessionStore) result.get(0);
+			  Logger.trace("Found entries: " + result.size());
+			  
+			  //Assertion requires an unique artifact
+			  if (result.size() != 1) {
+				 Logger.trace("No entries found.");
+			   	throw new MOADatabaseException("No session found with this sessionID");
+			  }
+			  
+			  return (AuthenticatedSessionStore) result.get(0);
+		  } catch (Exception e) {
+				if (tx != null && !tx.wasCommitted() && commit)
+					tx.rollback();
+				throw e;
+		}	
 	}
 }