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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
* Implementation of helper methods for I_S tables.
*/
#include "drizzled/server_includes.h"
#include "drizzled/session.h"
#include "drizzled/show.h"
#include "drizzled/sql_base.h"
#include "drizzled/plugin/client.h"
#include "drizzled/join_table.h"
#include "helper_methods.h"
#include <vector>
#include <string>
#include <sstream>
using namespace std;
using namespace drizzled;
static inline void make_upper(char *buf)
{
for (; *buf; buf++)
*buf= my_toupper(system_charset_info, *buf);
}
bool show_status_array(Session *session,
const char *wild,
SHOW_VAR *variables,
enum enum_var_type value_type,
struct system_status_var *status_var,
const char *prefix, Table *table,
bool ucase_names,
plugin::InfoSchemaTable *schema_table)
{
MY_ALIGNED_BYTE_ARRAY(buff_data, SHOW_VAR_FUNC_BUFF_SIZE, int64_t);
char * const buff= (char *) &buff_data;
char *prefix_end;
/* the variable name should not be longer than 64 characters */
char name_buffer[64];
int len;
SHOW_VAR tmp, *var;
prefix_end= strncpy(name_buffer, prefix, sizeof(name_buffer)-1);
prefix_end+= strlen(prefix);
if (*prefix)
*prefix_end++= '_';
len=name_buffer + sizeof(name_buffer) - prefix_end;
for (; variables->name; variables++)
{
strncpy(prefix_end, variables->name, len);
name_buffer[sizeof(name_buffer)-1]=0; /* Safety */
if (ucase_names)
make_upper(name_buffer);
/*
if var->type is SHOW_FUNC, call the function.
Repeat as necessary, if new var is again SHOW_FUNC
*/
for (var=variables; var->type == SHOW_FUNC; var= &tmp)
((mysql_show_var_func)((st_show_var_func_container *)var->value)->func)(&tmp, buff);
SHOW_TYPE show_type=var->type;
if (show_type == SHOW_ARRAY)
{
show_status_array(session, wild, (SHOW_VAR *) var->value, value_type,
status_var, name_buffer, table, ucase_names, schema_table);
}
else
{
if (!(wild && wild[0] && wild_case_compare(system_charset_info,
name_buffer, wild)))
{
char *value=var->value;
const char *pos, *end; // We assign a lot of const's
pthread_mutex_lock(&LOCK_global_system_variables);
if (show_type == SHOW_SYS)
{
show_type= ((sys_var*) value)->show_type();
value= (char*) ((sys_var*) value)->value_ptr(session, value_type,
&null_lex_str);
}
pos= end= buff;
/*
note that value may be == buff. All SHOW_xxx code below
should still work in this case
*/
switch (show_type) {
case SHOW_DOUBLE_STATUS:
value= ((char *) status_var + (ulong) value);
/* fall through */
case SHOW_DOUBLE:
/* 6 is the default precision for '%f' in sprintf() */
end= buff + my_fcvt(*(double *) value, 6, buff, NULL);
break;
case SHOW_LONG_STATUS:
value= ((char *) status_var + (ulong) value);
/* fall through */
case SHOW_LONG:
end= int10_to_str(*(long*) value, buff, 10);
break;
case SHOW_LONGLONG_STATUS:
value= ((char *) status_var + (uint64_t) value);
/* fall through */
case SHOW_LONGLONG:
end= int64_t10_to_str(*(int64_t*) value, buff, 10);
break;
case SHOW_SIZE:
{
stringstream ss (stringstream::in);
ss << *(size_t*) value;
string str= ss.str();
strncpy(buff, str.c_str(), str.length());
end= buff+ str.length();
}
break;
case SHOW_HA_ROWS:
end= int64_t10_to_str((int64_t) *(ha_rows*) value, buff, 10);
break;
case SHOW_BOOL:
end+= sprintf(buff,"%s", *(bool*) value ? "ON" : "OFF");
break;
case SHOW_MY_BOOL:
end+= sprintf(buff,"%s", *(bool*) value ? "ON" : "OFF");
break;
case SHOW_INT:
case SHOW_INT_NOFLUSH: // the difference lies in refresh_status()
end= int10_to_str((long) *(uint32_t*) value, buff, 10);
break;
case SHOW_HAVE:
{
SHOW_COMP_OPTION tmp_option= *(SHOW_COMP_OPTION *)value;
pos= show_comp_option_name[(int) tmp_option];
end= strchr(pos, '\0');
break;
}
case SHOW_CHAR:
{
if (!(pos= value))
pos= "";
end= strchr(pos, '\0');
break;
}
case SHOW_CHAR_PTR:
{
if (!(pos= *(char**) value))
pos= "";
end= strchr(pos, '\0');
break;
}
case SHOW_KEY_CACHE_LONG:
value= (char*) dflt_key_cache + (ulong)value;
end= int10_to_str(*(long*) value, buff, 10);
break;
case SHOW_KEY_CACHE_LONGLONG:
value= (char*) dflt_key_cache + (ulong)value;
end= int64_t10_to_str(*(int64_t*) value, buff, 10);
break;
case SHOW_UNDEF:
break; // Return empty string
case SHOW_SYS: // Cannot happen
default:
assert(0);
break;
}
table->restoreRecordAsDefault();
table->setWriteSet(0);
table->setWriteSet(1);
table->setWriteSet(2);
table->field[0]->store(name_buffer, strlen(name_buffer),
system_charset_info);
table->field[1]->store(pos, (uint32_t) (end - pos), system_charset_info);
table->field[1]->set_notnull();
pthread_mutex_unlock(&LOCK_global_system_variables);
schema_table->addRow(table->record[0], table->s->reclength);
}
}
}
return false;
}
void store_key_column_usage(Table *table,
LEX_STRING *db_name,
LEX_STRING *table_name,
const char *key_name,
uint32_t key_len,
const char *con_type,
uint32_t con_len,
int64_t idx)
{
const CHARSET_INFO * const cs= system_charset_info;
/* set the appropriate bits in the write bitset */
table->setWriteSet(1);
table->setWriteSet(2);
table->setWriteSet(4);
table->setWriteSet(5);
table->setWriteSet(6);
table->setWriteSet(7);
table->field[1]->store(db_name->str, db_name->length, cs);
table->field[2]->store(key_name, key_len, cs);
table->field[4]->store(db_name->str, db_name->length, cs);
table->field[5]->store(table_name->str, table_name->length, cs);
table->field[6]->store(con_type, con_len, cs);
table->field[7]->store((int64_t) idx, true);
}
/*
* Function object used for deleting the memory allocated
* for the columns contained with the vector of columns.
*/
class DeleteColumns
{
public:
template<typename T>
inline void operator()(const T *ptr) const
{
delete ptr;
}
};
void clearColumns(vector<const drizzled::plugin::ColumnInfo *> &cols)
{
for_each(cols.begin(), cols.end(), DeleteColumns());
cols.clear();
}
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