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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Brian Aker
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <plugin/session_dictionary/dictionary.h>
#include <drizzled/user_var_entry.h>
#define LARGEST_USER_VARIABLE_NAME 128
namespace session_dictionary {
Variables::Variables() :
drizzled::plugin::TableFunction("DATA_DICTIONARY", "USER_DEFINED_VARIABLES")
{
add_field("VARIABLE_NAME", drizzled::plugin::TableFunction::STRING, LARGEST_USER_VARIABLE_NAME, false);
add_field("VARIABLE_VALUE", drizzled::plugin::TableFunction::STRING, LARGEST_USER_VARIABLE_NAME, true);
}
Variables::Generator::Generator(drizzled::Field **arg) :
drizzled::plugin::TableFunction::Generator(arg),
user_vars(getSession().getUserVariables()),
iter(user_vars.begin())
{
}
Variables::Generator::~Generator()
{
}
bool Variables::Generator::populate()
{
while (iter != user_vars.end())
{
char buff[LARGEST_USER_VARIABLE_NAME];
drizzled::String tmp(buff, sizeof(buff), drizzled::system_charset_info);
bool null_value;
uint32_t decimals= 4; // arbitrary
iter->second->val_str(&null_value, &tmp, decimals);
// VARIABLE_NAME
push(iter->first);
// VARIABLE_VALUE
if (null_value)
push();
else
push(tmp.c_str());
iter++;
return true;
}
return false;
}
} /* namespace session_dictionary */
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