mariadb-columnstore-engine/dbcon/dmlpackage/dmltable.cpp

/* 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: dmltable.cpp 9210 2013-01-21 14:10:42Z rdempsey $
 *
 *
 ***********************************************************************/

#include "dmltable.h"
using namespace std;

namespace dmlpackage
{
DMLTable::DMLTable()
{
}

DMLTable::~DMLTable()
{
  try
  {
    RowList::iterator it = fRows.begin();

    while (it != fRows.end())
    {
      delete *it;
      it++;
    }
  }
  catch (...)
  {
    cout << "failed to delete the table rows" << endl;
  }
}

int DMLTable::read(messageqcpp::ByteStream& bytestream)
{
  int retval = 1;

  // read the table name
  bytestream >> fName;

  // read the schema name
  bytestream >> fSchema;

  messageqcpp::ByteStream::quadbyte rowNum;
  bytestream >> rowNum;

  for (unsigned int i = 0; i < rowNum; i++)
  {
    Row* aRow = new Row();
    retval = aRow->read(bytestream);
    fRows.push_back(aRow);
  }

  return retval;
}

void DMLTable::readMetaData(messageqcpp::ByteStream& bytestream)
{
  // read the table name
  bytestream >> fName;

  // read the schema name
  bytestream >> fSchema;
}

void DMLTable::readRowData(messageqcpp::ByteStream& bytestream)
{
  messageqcpp::ByteStream::quadbyte rowNum;
  bytestream >> rowNum;

  for (unsigned int i = 0; i < rowNum; i++)
  {
    Row* aRow = new Row();
    aRow->read(bytestream);
    fRows.push_back(aRow);
  }
}

int DMLTable::write(messageqcpp::ByteStream& bytestream)
{
  int retval = 1;
  // write table name and schma name to the bytestream
  bytestream << fName;
  bytestream << fSchema;
  messageqcpp::ByteStream::quadbyte rowNum;
  rowNum = fRows.size();
  bytestream << rowNum;
  // write the row list
  RowList::iterator rowListPtr;
  rowListPtr = fRows.begin();

  for (; rowListPtr != fRows.end(); ++rowListPtr)
  {
    retval = (*rowListPtr)->write(bytestream);
  }

  return retval;
}

}  // namespace dmlpackage