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// **********************************************************************
//
// Copyright (c) 2003-2010 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
package Freeze;
class TransactionI implements Transaction
{
public void
commit()
{
if(_txn == null)
{
throw new DatabaseException(_errorPrefix + "inactive transaction");
}
String txnId = null;
boolean committed = false;
boolean deadlock = false;
try
{
_connection.closeAllIterators();
if(_txTrace >= 1)
{
txnId = Long.toHexString((_txn.getId() & 0x7FFFFFFF) + 0x80000000L);
}
_txn.commit();
committed = true;
if(_txTrace >= 1)
{
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"committed transaction " + txnId);
}
}
catch(com.sleepycat.db.DeadlockException e)
{
deadlock = true;
if(_txTrace >= 1)
{
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"failed to commit transaction " + txnId + ": " +
e.getMessage());
}
DeadlockException ex = new DeadlockException(_errorPrefix + "DbTxn.commit: " + e.getMessage(), this);
ex.initCause(e);
throw ex;
}
catch(com.sleepycat.db.DatabaseException e)
{
if(_txTrace >= 1)
{
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"failed to commit transaction " + txnId + ": " +
e.getMessage());
}
DatabaseException ex = new DatabaseException();
ex.initCause(e);
ex.message = _errorPrefix + "DbTxn.commit: " + e.getMessage();
throw ex;
}
finally
{
_connection.clearTransaction();
if(_ownConnection)
{
_connection.close();
}
_connection = null;
_txn = null;
postCompletion(committed, deadlock);
}
}
public void
rollback()
{
if(_txn == null)
{
throw new DatabaseException(_errorPrefix + "inactive transaction");
}
String txnId = null;
boolean deadlock = false;
try
{
_connection.closeAllIterators();
if(_txTrace >= 1)
{
txnId = Long.toHexString((_txn.getId() & 0x7FFFFFFF) + 0x80000000L);
}
_txn.abort();
if(_txTrace >= 1)
{
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"rolled back transaction " + txnId);
}
}
catch(com.sleepycat.db.DeadlockException e)
{
if(_txTrace >= 1)
{
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"failed to rollback transaction " + txnId + ": " +
e.getMessage());
}
deadlock = true;
DeadlockException ex = new DeadlockException(_errorPrefix + "DbTxn.abort: " + e.getMessage(), this);
ex.initCause(e);
throw ex;
}
catch(com.sleepycat.db.DatabaseException e)
{
if(_txTrace >= 1)
{
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"failed to rollback transaction " + txnId + ": " +
e.getMessage());
}
DatabaseException ex = new DatabaseException();
ex.initCause(e);
ex.message = _errorPrefix + "DbTxn.abort: " + e.getMessage();
throw ex;
}
finally
{
_connection.clearTransaction();
if(_ownConnection)
{
_connection.close();
}
_connection = null;
_txn = null;
postCompletion(false, deadlock);
}
}
public Connection
getConnection()
{
return _connection;
}
TransactionI(ConnectionI connection)
{
_connection = connection;
_txTrace = connection.txTrace();
_errorPrefix = "DbEnv(\"" + _connection.envName() + "\"): ";
try
{
_txn = _connection.dbEnv().getEnv().beginTransaction(null, null);
if(_txTrace >= 1)
{
String txnId = Long.toHexString((_txn.getId() & 0x7FFFFFFF) + 0x80000000L);
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"started transaction " + txnId);
}
}
catch(com.sleepycat.db.DatabaseException e)
{
if(_txTrace >= 1)
{
_connection.communicator().getLogger().trace("Freeze.Transaction", _errorPrefix +
"failed to start transaction: " + e.getMessage());
}
DatabaseException ex = new DatabaseException();
ex.initCause(e);
ex.message = _errorPrefix + "txn_begin: " + e.getMessage();
throw ex;
}
}
void
setPostCompletionCallback(PostCompletionCallback cb)
{
_postCompletionCallback = cb;
}
void
adoptConnection()
{
_ownConnection = true;
}
ConnectionI
getConnectionI()
{
return _connection;
}
com.sleepycat.db.Transaction
dbTxn()
{
return _txn;
}
private void
postCompletion(boolean committed, boolean deadlock)
{
if(_postCompletionCallback != null)
{
try
{
_postCompletionCallback.postCompletion(committed, deadlock);
}
finally
{
_postCompletionCallback = null;
}
}
}
private ConnectionI _connection;
private int _txTrace;
private com.sleepycat.db.Transaction _txn;
private PostCompletionCallback _postCompletionCallback;
private String _errorPrefix;
private boolean _ownConnection = false;
}
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