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Current File : /www/server/mysql/src/rapid/plugin/x/src/callback_command_delegate.cc
/*
 * Copyright (c) 2015, 2023, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2.0,
 * as published by the Free Software Foundation.
 *
 * This program is also distributed with certain software (including
 * but not limited to OpenSSL) that is licensed under separate terms,
 * as designated in a particular file or component or in included license
 * documentation.  The authors of MySQL hereby grant you an additional
 * permission to link the program and your derivative works with the
 * separately licensed software that they have included with MySQL.
 *
 * 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, version 2.0, 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 St, Fifth Floor, Boston, MA
 * 02110-1301  USA
 */

#include "callback_command_delegate.h"

#include "xpl_log.h"

using namespace xpl;


Callback_command_delegate::Field_value::Field_value()
: is_unsigned(false), is_string(false)
{}

Callback_command_delegate::Field_value::Field_value(const Field_value& other)
:   value(other.value),
    is_unsigned(other.is_unsigned),
    is_string(other.is_string)
{
  if (other.is_string)
    value.v_string = new std::string(*other.value.v_string);
}

/*
NOTE: Commented for coverage. Uncomment when needed.

Callback_command_delegate::Field_value& Callback_command_delegate::Field_value::operator = (const Field_value& other)
{
  if (&other != this)
  {
    this->~Field_value();

    value = other.value;
    is_unsigned = other.is_unsigned;
    is_string = other.is_string;

    if (other.is_string)
      value.v_string = new std::string(*other.value.v_string);
  }

  return *this;
}
*/

Callback_command_delegate::Field_value::Field_value(const longlong &num, bool unsign)
{
  value.v_long = num;
  is_unsigned = unsign;
  is_string = false;
}

Callback_command_delegate::Field_value::Field_value(const double num)
{
  value.v_double = num;
  is_string = false;
}

Callback_command_delegate::Field_value::Field_value(const decimal_t &decimal)
{
  value.v_decimal = decimal;
  is_string = false;
}


Callback_command_delegate::Field_value::Field_value(const MYSQL_TIME &time)
{
  value.v_time = time;
  is_string = false;
}

Callback_command_delegate::Field_value::Field_value(const char *str, size_t length)
{
  value.v_string = new std::string(str, length);
  is_string = true;
}


Callback_command_delegate::Field_value::~Field_value()
{
  if (is_string && value.v_string)
    delete value.v_string;
}

Callback_command_delegate::Row_data::~Row_data()
{
  clear();
}

void Callback_command_delegate::Row_data::clear()
{
  std::vector<Field_value*>::iterator i = fields.begin();

  for (; i != fields.end(); ++i)
    ngs::free_object(*i);

  fields.clear();
}

Callback_command_delegate::Row_data::Row_data(const Row_data& other)
{
  clone_fields(other);
}

Callback_command_delegate::Row_data& Callback_command_delegate::Row_data::operator=(const Row_data& other)
{
  if (&other != this)
  {
    clear();
    clone_fields(other);
  }

  return *this;
}

void Callback_command_delegate::Row_data::clone_fields(const Row_data& other)
{
  fields.reserve(other.fields.size());
  std::vector<Field_value*>::const_iterator i = other.fields.begin();
  for (; i != other.fields.end(); ++i)
  {
    this->fields.push_back((*i) ? ngs::allocate_object<Field_value>(**i) : NULL);
  }
}



Callback_command_delegate::Callback_command_delegate()
: m_current_row(NULL)
{
}


Callback_command_delegate::Callback_command_delegate(Start_row_callback start_row, End_row_callback end_row)
: m_start_row(start_row), m_end_row(end_row), m_current_row(NULL)
{
}


void Callback_command_delegate::set_callbacks(Start_row_callback start_row, End_row_callback end_row)
{
  m_start_row = start_row;
  m_end_row = end_row;
}


void Callback_command_delegate::reset()
{
  m_current_row = NULL;
  Command_delegate::reset();
}


int Callback_command_delegate::start_row()
{
  if (m_start_row)
  {
    m_current_row = m_start_row();
    if (!m_current_row)
      return true;
  }
  else
    m_current_row = NULL;
  return false;
}

int Callback_command_delegate::end_row()
{
  if (m_end_row && !m_end_row(m_current_row))
    return true;
  return false;
}

void Callback_command_delegate::abort_row()
{
}

ulong Callback_command_delegate::get_client_capabilities()
{
  return CLIENT_DEPRECATE_EOF;
}

/****** Getting data ******/
int Callback_command_delegate::get_null()
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(NULL);
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_integer(longlong value)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(value));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_longlong(longlong value, uint unsigned_flag)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(value, unsigned_flag));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_decimal(const decimal_t * value)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(*value));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_double(double value, uint32 decimals)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(value));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_date(const MYSQL_TIME * value)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(*value));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_time(const MYSQL_TIME * value, uint decimals)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(*value));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_datetime(const MYSQL_TIME * value, uint decimals)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(*value));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

int Callback_command_delegate::get_string(const char * const value, size_t length,
                                               const CHARSET_INFO * const valuecs)
{
  try
  {
    if (m_current_row)
      m_current_row->fields.push_back(ngs::allocate_object<Field_value>(value, length));
  }
  catch (std::exception &e)
  {
    log_error("Error getting result data: %s", e.what());
    return true;
  }
  return false;
}

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