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// **********************************************************************
//
// Copyright (c) 2003-2009 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.
//
// **********************************************************************
#include <Freeze/ConnectionI.h>
#include <Freeze/MapI.h>
#include <Freeze/Initialize.h>
using namespace Ice;
using namespace Freeze;
using namespace std;
Freeze::TransactionPtr
Freeze::ConnectionI::beginTransaction()
{
return beginTransactionI();
}
Freeze::TransactionIPtr
Freeze::ConnectionI::beginTransactionI()
{
if(_transaction)
{
throw TransactionAlreadyInProgressException(__FILE__, __LINE__);
}
closeAllIterators();
_transaction = new TransactionI(this);
return _transaction;
}
Freeze::TransactionPtr
Freeze::ConnectionI::currentTransaction() const
{
return _transaction;
}
void
Freeze::ConnectionI::removeMapIndex(const string& mapName, const string& indexName)
{
if(_dbEnv == 0)
{
throw DatabaseException(__FILE__, __LINE__, "Closed connection");
}
string filename = mapName + "." + indexName;
DbTxn* txn = dbTxn();
try
{
_dbEnv->getEnv()->dbremove(txn, filename.c_str(), 0, txn != 0 ? 0 : DB_AUTO_COMMIT);
}
catch(const DbDeadlockException& dx)
{
throw DeadlockException(__FILE__, __LINE__, dx.what(), _transaction);
}
catch(const DbException& dx)
{
if(dx.get_errno() == ENOENT)
{
throw IndexNotFoundException(__FILE__, __LINE__, mapName, indexName);
}
else
{
throw DatabaseException(__FILE__, __LINE__, dx.what());
}
}
}
void
Freeze::ConnectionI::close()
{
if(_transaction)
{
_transaction->rollbackInternal(true);
assert(_transaction == 0);
}
while(!_mapList.empty())
{
(*_mapList.begin())->close();
}
_dbEnv = 0;
}
CommunicatorPtr
Freeze::ConnectionI::getCommunicator() const
{
return _communicator;
}
string
Freeze::ConnectionI::getName() const
{
return _envName;
}
void
Freeze::ConnectionI::__incRef()
{
IceUtil::Mutex::Lock sync(_refCountMutex->mutex);
_refCount++;
}
void
Freeze::ConnectionI::__decRef()
{
IceUtil::Mutex::Lock sync(_refCountMutex->mutex);
if(--_refCount == 0)
{
sync.release();
delete this;
}
else if(_refCount == 1 && _transaction != 0 && _transaction->dbTxn() != 0 && _transaction->__getRefNoSync() == 1)
{
sync.release();
if(_transaction)
{
//
// This makes the transaction release the last refcount on the connection
//
_transaction->rollbackInternal(true);
}
}
}
int
Freeze::ConnectionI::__getRef() const
{
IceUtil::Mutex::Lock sync(_refCountMutex->mutex);
return _refCount;
}
int
Freeze::ConnectionI::__getRefNoSync() const
{
return _refCount;
}
Freeze::ConnectionI::~ConnectionI()
{
close();
}
Freeze::ConnectionI::ConnectionI(const SharedDbEnvPtr& dbEnv) :
_communicator(dbEnv->getCommunicator()),
_dbEnv(dbEnv),
_envName(dbEnv->getEnvName()),
_trace(_communicator->getProperties()->getPropertyAsInt("Freeze.Trace.Map")),
_txTrace(_communicator->getProperties()->getPropertyAsInt("Freeze.Trace.Transaction")),
_deadlockWarning(_communicator->getProperties()->getPropertyAsInt("Freeze.Warn.Deadlocks") != 0),
_refCountMutex(new SharedMutex),
_refCount(0)
{
}
void
Freeze::ConnectionI::closeAllIterators()
{
for(list<MapHelperI*>::iterator p = _mapList.begin(); p != _mapList.end();
++p)
{
(*p)->closeAllIterators();
}
}
void
Freeze::ConnectionI::registerMap(MapHelperI* m)
{
_mapList.push_back(m);
}
void
Freeze::ConnectionI::unregisterMap(MapHelperI* m)
{
_mapList.remove(m);
}
Freeze::ConnectionPtr
Freeze::createConnection(const CommunicatorPtr& communicator, const string& envName)
{
return new ConnectionI(SharedDbEnv::get(communicator, envName, 0));
}
Freeze::ConnectionPtr
Freeze::createConnection(const CommunicatorPtr& communicator, const string& envName, DbEnv& dbEnv)
{
return new ConnectionI(SharedDbEnv::get(communicator, envName, &dbEnv));
}
void
Freeze::TransactionAlreadyInProgressException::ice_print(ostream& out) const
{
Exception::ice_print(out);
out << ":\ntransaction already in progress";
}
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