the begginning

writeengine/client/we_ddlcommandclient.cpp

@@ -0,0 +1,94 @@
+/* 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. */
+
+#include <unistd.h>
+
+#include "bytestream.h"
+using namespace messageqcpp;
+
+#include "we_messages.h"
+#include "we_clients.h"
+#include "resourcemanager.h"
+#include "ddlpkg.h"
+#include "ddlpackageprocessor.h"
+#include <boost/date_time/gregorian/gregorian.hpp>
+using namespace boost::gregorian;
+#include "dataconvert.h"
+using namespace dataconvert;
+using namespace ddlpackage;
+using namespace ddlpackageprocessor;
+
+#include "we_ddlcommandclient.h"
+
+namespace WriteEngine {
+	WE_DDLCommandClient::WE_DDLCommandClient()
+	{
+		fWEClient = new WEClients(WEClients::DDLPROC);
+	}
+
+	WE_DDLCommandClient::~WE_DDLCommandClient()
+	{
+		delete fWEClient;
+		fWEClient = NULL;
+	}
+
+	uint8_t WE_DDLCommandClient::UpdateSyscolumnNextval(uint32_t columnOid, uint64_t nextVal, uint32_t sessionID) 
+	{
+		ByteStream command, response;
+		uint8_t err = 0;
+		uint64_t uniqueId = fDbrm.getUnique64();
+		fWEClient->addQueue(uniqueId);
+		command << (ByteStream::byte)WE_UPDATE_NEXTVAL;
+		command << uniqueId;
+		command << columnOid;
+		command << nextVal;
+		command << sessionID;
+		uint16_t dbRoot;	
+		BRM::OID_t oid = 1021;
+		fDbrm.getSysCatDBRoot(oid, dbRoot); 
+		int pmNum = 1; 
+		boost::shared_ptr<messageqcpp::ByteStream> bsIn;
+		
+		try {
+			fOam.getDbrootPmConfig (dbRoot, pmNum);
+			fWEClient->write(command, pmNum);
+			while (1)
+			{			
+				bsIn.reset(new ByteStream());
+				fWEClient->read(uniqueId, bsIn);
+				if ( bsIn->length() == 0 ) //read error
+				{
+					err = 1;
+					
+					break;
+				}			
+				else {
+					*bsIn >> err;
+					break;
+				}
+			}
+		}
+		catch (...)
+		{
+			err = 1;
+		}
+		fWEClient->removeQueue(uniqueId);
+		return err;
+	}
+
+}
+