mirror of
https://github.com/MariaDB/server.git
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a206658b98
This change removed 68 explict strlen() calls from the code. The following renames was done to ensure we don't use the old names when merging code from earlier releases, as using the new variables for print function could result in crashes: - charset->csname renamed to charset->cs_name - charset->name renamed to charset->coll_name Almost everything where mechanical changes except: - Changed to use the new Protocol::store(LEX_CSTRING..) when possible - Changed to use field->store(LEX_CSTRING*, CHARSET_INFO*) when possible - Changed to use String->append(LEX_CSTRING&) when possible Other things: - There where compiler issues with ensuring that all character set names points to the same string: gcc doesn't allow one to use integer constants when defining global structures (constant char * pointers works fine). To get around this, I declared defines for each character set name length.
141 lines
3.7 KiB
C++
141 lines
3.7 KiB
C++
/* Copyright (C) 2016 MariaDB Foundation and Sergey Vojtovich
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1335 USA */
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#define MYSQL_SERVER
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#include <my_global.h>
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#include <sql_class.h>
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#include <sql_i_s.h>
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#include <sql_show.h>
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static const LEX_CSTRING result_types[]=
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{
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{ STRING_WITH_LEN("VARCHAR") },
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{ STRING_WITH_LEN("DOUBLE") },
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{ STRING_WITH_LEN("INT") },
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{ STRING_WITH_LEN("<IMPOSSIBLE1>") }, // ROW_RESULT
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{ STRING_WITH_LEN("DECIMAL") },
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{ STRING_WITH_LEN("<IMPOSSIBLE2>")} // TIME_RESULT
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};
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static const LEX_CSTRING unsigned_result_types[]=
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{
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{ STRING_WITH_LEN("<IMPOSSIBLE3>") }, // UNSIGNED STRING_RESULT
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{ STRING_WITH_LEN("DOUBLE UNSIGNED") },
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{ STRING_WITH_LEN("INT UNSIGNED") },
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{ STRING_WITH_LEN("<IMPOSSIBLE4>") }, // UNSIGNED ROW_RESULT
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{ STRING_WITH_LEN("DECIMAL UNSIGNED") },
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{ STRING_WITH_LEN("<IMPOSSIBLE5>") } // UNSIGNED TIME_RESULT
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};
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namespace Show {
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static ST_FIELD_INFO user_variables_fields_info[] =
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{
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Column("VARIABLE_NAME", Name(), NOT_NULL, "Variable_name"),
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Column("VARIABLE_VALUE", Varchar(2048), NULLABLE, "Value"),
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Column("VARIABLE_TYPE", Name(), NOT_NULL),
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Column("CHARACTER_SET_NAME", CSName(), NULLABLE),
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CEnd()
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};
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} // namespace Show
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static int user_variables_fill(THD *thd, TABLE_LIST *tables, COND *cond)
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{
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ulong i;
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TABLE *table= tables->table;
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Field **field= table->field;
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String buff;
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bool is_null;
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for (i= 0; i < thd->user_vars.records; i++)
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{
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user_var_entry *var= (user_var_entry*) my_hash_element(&thd->user_vars, i);
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field[0]->store(var->name.str, var->name.length, system_charset_info);
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if (var->val_str(&is_null, &buff, NOT_FIXED_DEC))
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{
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field[1]->store(buff.ptr(), buff.length(), buff.charset());
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field[1]->set_notnull();
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}
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else if (is_null)
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field[1]->set_null();
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else
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return 1;
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const LEX_CSTRING *tmp= var->unsigned_flag ?
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&unsigned_result_types[var->type] :
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&result_types[var->type];
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field[2]->store(tmp->str, tmp->length, system_charset_info);
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if (var->charset())
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{
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field[3]->store(&var->charset()->cs_name, system_charset_info);
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field[3]->set_notnull();
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}
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else
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field[3]->set_null();
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if (schema_table_store_record(thd, table))
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return 1;
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}
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return 0;
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}
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int user_variables_reset(void)
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{
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THD *thd= current_thd;
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if (thd)
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my_hash_reset(&thd->user_vars);
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return 0;
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}
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static int user_variables_init(void *p)
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{
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ST_SCHEMA_TABLE *is= (ST_SCHEMA_TABLE *) p;
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is->fields_info= Show::user_variables_fields_info;
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is->fill_table= user_variables_fill;
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is->reset_table= user_variables_reset;
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return 0;
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}
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static struct st_mysql_information_schema user_variables_descriptor=
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{ MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION };
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maria_declare_plugin(user_variables)
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{
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MYSQL_INFORMATION_SCHEMA_PLUGIN,
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&user_variables_descriptor,
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"user_variables",
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"Sergey Vojtovich",
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"User-defined variables",
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PLUGIN_LICENSE_GPL,
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user_variables_init,
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NULL,
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0x0100,
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NULL,
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NULL,
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"1.0",
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MariaDB_PLUGIN_MATURITY_STABLE
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}
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maria_declare_plugin_end;
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