the begginning

dbcon/execplan/sessionmanager.cpp

@@ -0,0 +1,206 @@
+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/*****************************************************************************
+ * $Id: sessionmanager.cpp 9215 2013-01-24 18:40:12Z pleblanc $
+ *
+ ****************************************************************************/
+
+/** @file
+ * This class issues Transaction ID and keeps track of the current version ID
+ */
+ 
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <stdexcept>
+#include <ios>
+
+#include "calpontsystemcatalog.h"
+#include "sessionmanager.h"
+#include "configcpp.h"
+#include "messagelog.h"
+#include "dbrm.h"
+
+using namespace std;
+using namespace BRM;
+
+namespace execplan {
+
+
+
+SessionManager::SessionManager()
+{	
+	config::Config* conf;
+	
+	conf = config::Config::makeConfig();
+	txnidFilename = conf->getConfig("SessionManager", "TxnIDFile");
+}
+
+SessionManager::SessionManager(bool nolock)
+{	
+	config::Config* conf;
+	string stmp;
+	
+	conf = config::Config::makeConfig();
+	txnidFilename = conf->getConfig("SessionManager", "TxnIDFile");
+}
+
+SessionManager::SessionManager(const SessionManager& sm)
+{
+	txnidFilename = sm.txnidFilename;
+}
+
+SessionManager::~SessionManager()
+{
+}
+
+const QueryContext SessionManager::verID()
+{
+	return dbrm.verID();
+}
+
+const QueryContext SessionManager::sysCatVerID()
+{
+	return dbrm.sysCatVerID();
+}
+
+const TxnID SessionManager::newTxnID(const SID session, bool block, bool isDDL) 
+{
+	TxnID ret;
+
+	ret = dbrm.newTxnID(session, block, isDDL);
+	return ret;
+}
+
+void SessionManager::committed(TxnID& txn)
+{
+	TxnID tmp;
+
+	tmp.id = txn.id;
+	tmp.valid = txn.valid;
+	dbrm.committed(tmp);
+	txn.id = tmp.id;
+	txn.valid = tmp.valid;
+}
+
+void SessionManager::rolledback(TxnID& txn)
+{
+	TxnID tmp;
+
+	tmp.id = txn.id;
+	tmp.valid = txn.valid;
+	dbrm.rolledback(tmp);
+	txn.id = tmp.id;
+	txn.valid = tmp.valid;
+}
+
+const TxnID SessionManager::getTxnID(const SID session)
+{
+	TxnID tmp;	
+	TxnID ret;
+
+	tmp = dbrm.getTxnID(session);
+	ret.id = tmp.id;
+	ret.valid = tmp.valid;
+
+	return ret;
+}
+
+boost::shared_array<SIDTIDEntry> SessionManager::SIDTIDMap(int& len)
+{
+	// is this cast valid?
+	return dbrm.SIDTIDMap(len);
+}
+
+string SessionManager::getTxnIDFilename() const 
+{
+	return txnidFilename;
+}
+
+int SessionManager::verifySize()
+{
+	return 1;
+}
+
+void SessionManager::reset()
+{
+	dbrm.sessionmanager_reset();
+}
+
+const uint32_t SessionManager::getUnique32()
+{
+	return dbrm.getUnique32();
+}
+
+const bool SessionManager::checkActiveTransaction( const SID sessionId, bool& bIsDbrmUp, SIDTIDEntry& blocker )
+{
+	bIsDbrmUp = true;
+	int arrayLenth = 0;
+	bool ret = false;
+	boost::shared_array<SIDTIDEntry> sIDTIDMap;
+
+	sIDTIDMap = SIDTIDMap( arrayLenth );
+	
+	if (sIDTIDMap)
+	{
+		for ( int i = 0; i < arrayLenth; i++ )
+		{
+			if ( sIDTIDMap[i].txnid.valid && ( sIDTIDMap[i].sessionid != sessionId || sessionId == 0 ) )
+			{
+				blocker = sIDTIDMap[i];
+				ret = true;
+			}
+		}
+	}
+	else
+	{
+		bIsDbrmUp = false;
+	}
+
+	return ret;
+}
+
+const bool SessionManager::isTransactionActive(const SID sessionId, bool& bIsDbrmUp)
+{
+	bIsDbrmUp = true;
+	int arrayLenth = 0;
+	bool ret = false;
+	boost::shared_array<SIDTIDEntry> sIDTIDMap;
+
+	sIDTIDMap = SIDTIDMap(arrayLenth);
+
+	if (sIDTIDMap)
+	{
+		for ( int i = 0; i < arrayLenth; i++ )
+		{
+			if (sIDTIDMap[i].txnid.valid && (sIDTIDMap[i].sessionid == sessionId))
+			{
+				ret = true;
+				break;
+			}
+		}
+	}
+	else
+	{
+		bIsDbrmUp = false;
+	}
+
+	return ret;
+}
+
+}  //namespace