DBCacheBenchmarking/Schema.cpp at master · adamanthil/DBCacheBenchmarking · GitHub

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#include <algorithm>

#include "Schema.h"

Schema::Schema() :
  m_size(0)
{
}

Schema::Schema(const std::vector<const Attribute *> * columns)
  :  m_size(0)
{
  reserve(columns->size());
  std::vector<const Attribute *>::const_iterator i = columns->begin();
  for ( ;  i != columns->end(); i++)
    {
      add(*i);
    }
}

Schema::~Schema()
{
  std::for_each(begin(), end(), free);
}

void Schema::add(const Attribute * a)
{
  Attribute * attribute =
    new Attribute(a->id(), size(), a->name(), a->table(), a->size(), a->type());

  push_back(attribute);

  m_offset[attribute->qualified_name()] = m_size;
  m_size += attribute->size();
}

bool Schema::contains(const std::string & name) const
{
  return m_offset.find(name) != m_offset.end();
}

int Schema::offset(const Attribute * attribute) const
{
  return m_offset.find(attribute->qualified_name())->second;
}

int Schema::offset(const std::string & column) const
{
  return m_offset.find(column)->second;
}


int Schema::offset(int fid) const
{
  int position = 0;

  for (int i = 0; i < fid; i++)
    {
      position += at(i)->size();
    }

  return position;
}

size_t Schema::rsize() const
{
  return m_size;
}

size_t Schema::nitems() const
{
  return size();
}

const Attribute * Schema::operator[](const std::string & name) const
{
  const Attribute * attribute = NULL;

  for (int i = 0; i < size(); i++)
    {
      if (name == (attribute = at(i))->name() || // TODO: will use only q-name
	  name == attribute->qualified_name())
	{
	  return attribute;
	}
    }

  return NULL;
}

const Attribute * Schema::operator[](int fid) const
{
  return std::vector<Attribute *>::at(fid);
}

const Attribute * Schema::at(int fid) const
{
  return std::vector<Attribute *>::at(fid);
}