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20031c6273
sql/create_options.cc:
an utility function to compare two filled-in engine_option structures
sql/sql_table.cc:
* two keys are different if their option_struct's differ
(for ALTER TABLE DROP key, ADD key)
* engines doing inplace alter must see the new frm image
102 lines
4 KiB
C++
102 lines
4 KiB
C++
/* Copyright (C) 2010 Monty Program Ab
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/**
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@file
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Engine defined options of tables/fields/keys in CREATE/ALTER TABLE.
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*/
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#ifndef SQL_CREATE_OPTIONS_INCLUDED
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#define SQL_CREATE_OPTIONS_INCLUDED
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#include "sql_class.h"
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//#include "handler.h"
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class engine_option_value: public Sql_alloc
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{
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public:
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LEX_STRING name;
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LEX_STRING value;
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engine_option_value *next; ///< parser puts them in a FIFO linked list
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bool parsed; ///< to detect unrecognized options
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bool quoted_value; ///< option=VAL vs. option='VAL'
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engine_option_value(engine_option_value *src,
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engine_option_value **start, engine_option_value **end) :
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name(src->name), value(src->value),
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next(NULL), parsed(src->parsed), quoted_value(src->quoted_value)
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{
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link(start, end);
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}
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engine_option_value(LEX_STRING &name_arg, LEX_STRING &value_arg, bool quoted,
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engine_option_value **start, engine_option_value **end) :
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name(name_arg), value(value_arg),
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next(NULL), parsed(false), quoted_value(quoted)
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{
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link(start, end);
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}
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engine_option_value(LEX_STRING &name_arg,
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engine_option_value **start, engine_option_value **end) :
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name(name_arg), value(null_lex_str),
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next(NULL), parsed(false), quoted_value(false)
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{
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link(start, end);
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}
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engine_option_value(LEX_STRING &name_arg, ulonglong value_arg,
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engine_option_value **start, engine_option_value **end,
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MEM_ROOT *root) :
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name(name_arg), next(NULL), parsed(false), quoted_value(false)
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{
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if ((value.str= (char *)alloc_root(root, 22)))
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{
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value.length= longlong10_to_str(value_arg, value.str, 10) - value.str;
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link(start, end);
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}
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}
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static uchar *frm_read(const uchar *buff, engine_option_value **start,
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engine_option_value **end, MEM_ROOT *root);
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void link(engine_option_value **start, engine_option_value **end);
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uint frm_length();
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uchar *frm_image(uchar *buff);
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};
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typedef struct st_key KEY;
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class Create_field;
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bool resolve_sysvar_table_options(handlerton *hton);
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void free_sysvar_table_options(handlerton *hton);
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bool parse_engine_table_options(THD *thd, handlerton *ht, TABLE_SHARE *share);
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bool parse_option_list(THD* thd, handlerton *hton, void *option_struct,
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engine_option_value **option_list,
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ha_create_table_option *rules,
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bool suppress_warning, MEM_ROOT *root);
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bool engine_table_options_frm_read(const uchar *buff, uint length,
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TABLE_SHARE *share);
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engine_option_value *merge_engine_table_options(engine_option_value *source,
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engine_option_value *changes,
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MEM_ROOT *root);
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uint engine_table_options_frm_length(engine_option_value *table_option_list,
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List<Create_field> &create_fields,
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uint keys, KEY *key_info);
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uchar *engine_table_options_frm_image(uchar *buff,
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engine_option_value *table_option_list,
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List<Create_field> &create_fields,
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uint keys, KEY *key_info);
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bool engine_options_differ(void *old_struct, void *new_struct,
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ha_create_table_option *rules);
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#endif
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