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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems
*
* 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
*/
/**
* @file
* variables I_S table methods.
*/
#include "drizzled/server_includes.h"
#include "drizzled/session.h"
#include "drizzled/show.h"
#include "helper_methods.h"
#include "variables.h"
#include <vector>
using namespace drizzled;
using namespace std;
/*
* Vectors of columns for the variables I_S tables.
*/
extern vector<const plugin::ColumnInfo *> *status_columns;
/*
* Methods for the variables related I_S tables.
*/
static plugin::InfoSchemaMethods *methods= NULL;
/*
* variables I_S tables.
*/
static plugin::InfoSchemaTable *glob_var_table= NULL;
static plugin::InfoSchemaTable *sess_var_table= NULL;
static plugin::InfoSchemaTable *var_table= NULL;
/**
* Initialize the I_S table.
*
* @return a pointer to an I_S table
*/
plugin::InfoSchemaTable *GlobalVariablesIS::getTable()
{
if (methods == NULL)
{
methods= new VariablesISMethods();
}
if (glob_var_table == NULL)
{
glob_var_table= new plugin::InfoSchemaTable("GLOBAL_VARIABLES",
*status_columns,
-1, -1, false, false,
0,
methods);
}
return glob_var_table;
}
/**
* Delete memory allocated for the table, columns and methods.
*/
void GlobalVariablesIS::cleanup()
{
delete glob_var_table;
delete methods;
}
/**
* Initialize the I_S table.
*
* @return a pointer to an I_S table
*/
plugin::InfoSchemaTable *SessionVariablesIS::getTable()
{
if (sess_var_table == NULL)
{
sess_var_table= new plugin::InfoSchemaTable("SESSION_VARIABLES",
*status_columns,
-1, -1, false, false, 0,
methods);
}
return sess_var_table;
}
/**
* Delete memory allocated for the table, columns and methods.
*/
void SessionVariablesIS::cleanup()
{
delete sess_var_table;
}
/**
* Initialize the I_S table.
*
* @return a pointer to an I_S table
*/
plugin::InfoSchemaTable *VariablesIS::getTable()
{
if (var_table == NULL)
{
var_table= new plugin::InfoSchemaTable("VARIABLES",
*status_columns,
-1, -1, true, false, 0,
methods);
}
return var_table;
}
/**
* Delete memory allocated for the table, columns and methods.
*/
void VariablesIS::cleanup()
{
delete var_table;
}
int VariablesISMethods::fillTable(Session *session,
Table *table,
plugin::InfoSchemaTable *schema_table)
{
int res= 0;
LEX *lex= session->lex;
const char *wild= lex->wild ? lex->wild->ptr() : NULL;
const string schema_table_name= schema_table->getTableName();
enum enum_var_type option_type= OPT_SESSION;
bool upper_case_names= (schema_table_name.compare("VARIABLES") != 0);
bool sorted_vars= (schema_table_name.compare("VARIABLES") == 0);
if (lex->option_type == OPT_GLOBAL ||
schema_table_name.compare("GLOBAL_VARIABLES") == 0)
{
option_type= OPT_GLOBAL;
}
pthread_rwlock_rdlock(&LOCK_system_variables_hash);
res= show_status_array(session, wild, enumerate_sys_vars(session, sorted_vars),
option_type, NULL, "", table, upper_case_names, schema_table);
pthread_rwlock_unlock(&LOCK_system_variables_hash);
return res;
}
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