mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 04:22:27 +01:00
5a28c2caca
Warning handling and initial prepared statement handling (last not complete yet) Changed a lot of functions that returned 0/1 to my_bool type. GRANT handling now uses read/write locks instead of mutex Change basic net functions to use THD instead of NET (needed for 4.1 protocol) Use my_sprintf instead of sprintf() + strlen() Added alloc_query() to be able to chare query initialization code with prepared statements. Cleanup handling of SHOW COUNT(*) WARNINGS and SELECT LAST_INSERT_ID() Note that the following test fails (will be fixed ASAP): sub_select, union, rpl_rotate_logs and rpl_mystery22 BitKeeper/deleted/.del-README~3449730baf983117: Delete: mysql-test/t/README BitKeeper/deleted/.del-sql_error.cc~2f1caca8d2485dbe: Delete: libmysqld/sql_error.cc BitKeeper/deleted/.del-sql_prepare.cc~f703729793935ed6: Delete: libmysqld/sql_prepare.cc Docs/manual.texi: Updated variable list client/mysql.cc: Show warning count to user. client/mysqltest.c: Add warnings to test results configure.in: New shared library version number include/errmsg.h: Indentation cleanup include/mysql.h: Removed MYSQL_ERROR Indentaion cleanups include/mysql_com.h: Changed functions to returns true/false to my_bool. include/mysqld_error.h: New error messages isam/pack_isam.c: Indentation change libmysql/Makefile.am: Fix of wrong merge libmysql/Makefile.shared: Indentation cleanup libmysql/errmsg.c: Removed not used errors libmysql/libmysql.c: Change functions to return 1 on error (not -1) Change type of functions that returns 0/1 to my_bool Lot of code optimizations. Lot of changes for prepared statements. This now handles sending of binary data to server. Receving of binary data is not yet done (will have to wait until server code for this is ready) mysql_warning_count and mysql_warnings() implemented. libmysql/libmysql.def: Added mysql_warnings and mysql_warning_count libmysql/manager.c: Fixed wrong testing of result from my_connect() libmysqld/lib_sql.cc: Removed global variable THR_NET Change basic net functions to use THD instead of NET GRANT handling now uses read/write locks instead of mutex libmysqld/libmysqld.c: Changed functions to be my_bool myisam/ft_boolean_search.c: Trivial code cleanup myisam/ft_stopwords.c: Trivial code cleanup myisam/mi_check.c: Update to 4.1 structures myisam/myisampack.c: Trivial code cleanup myisam/rt_key.c: Code cleanup myisam/rt_test.c: Code cleanup Removed compiler warnings myisam/sp_key.c: Indentation changes myisam/sp_test.c: Removed compiler warnings mysql-test/README: Updated to reflect the new --external flag. mysql-test/mysql-test-run.sh: --local (start new server) is now default. Use --external to test against external server. mysql-test/r/rollback.result: Updated for 4.1 warnings mysql-test/r/rpl_log.result: Update for 4.1 mysql-test/t/rollback.test: Updated for 4.1 warnings mysql-test/t/rpl_log_pos.test: Portability fix mysys/hash.c: Indentation change mysys/my_error.c: Indentation change mysys/tree.c: Updated file description sql/field.cc: Fixed bugs introduced by merge Use my_sprintf instead of sprintf() + strlen() sql/field.h: Add CHARSET_INFO to field structure sql/gstream.h: Indentation changes. Added GPL copyright header sql/ha_innodb.cc: Updated parameters for net functions. sql/item.cc: Updates of Item_param Indentation changes sql/item.h: Removed size_of() function from item. sql/item_func.cc: Update function usage for 4.1 Added get_system_var() sql/item_func.h: Indentation change sql/item_strfunc.cc: Removed not needed inclusion of gstream.h Update to use system variables (from 4.0) sql/item_sum.h: Removed size_of() functions from item. sql/item_timefunc.cc: Change sprintf() + strlen() -> my_sprintf() Added length parameter to ->append() sql/item_timefunc.h: Removed size_of() functions from item. sql/item_uniq.h: Removed size_of() functions from item. sql/lex.h: Removed SQL_ERROR_COUNT variable sql/log.cc: Change sprintf() + strlen() -> my_sprintf() sql/log_event.cc: Change sprintf() + strlen() -> my_sprintf() sql/mini_client.cc: Added check that one always specifies a length to mc_mysql_query() sql/mysql_priv.h: New prototypes Change of NET -> THD parameter for net functions. sql/mysqld.cc: New startup options: 'max_prepared_statements', 'max_error_count' Updated usage of net functions. sql/net_pkg.cc: Change basic net functions to use THD instead of NET (needed to be able to handle 4.0 and 4.1 protocols) Lots of function comments sql/net_serv.cc: Change int return values -> my_bool Updated net_write_command() to take an extra header block to be added to the packet. (This made the prepared statement code much nicer and more efficient) sql/repl_failsafe.cc: Update net functions to use THD instead of NET sql/set_var.cc: Added @@error_count and @@warning_count variables. Updated to 4.1 function usage sql/set_var.h: Added @@error_count and @@warning_count variables. sql/share/czech/errmsg.txt: Removed Warning: from warning error messages. sql/share/english/errmsg.txt: Removed Warning: from warning error messages. sql/share/greek/errmsg.txt: Removed Warning: from warning error messages. sql/share/hungarian/errmsg.txt: Removed Warning: from warning error messages. sql/share/japanese/errmsg.txt: Removed Warning: from warning error messages. sql/share/korean/errmsg.txt: Removed Warning: from warning error messages. sql/share/norwegian-ny/errmsg.txt: Removed Warning: from warning error messages. sql/share/norwegian/errmsg.txt: Removed Warning: from warning error messages. sql/share/polish/errmsg.txt: Removed Warning: from warning error messages. sql/share/romanian/errmsg.txt: Removed Warning: from warning error messages. sql/share/slovak/errmsg.txt: Removed Warning: from warning error messages. sql/share/swedish/errmsg.txt: Removed Warning: from warning error messages. sql/slave.cc: Change basic net functions to use THD instead of NET skip_load_data_file recoded to fit new client/server protocol sql/spatial.h: Added copyright header Indentation cleanups sql/sql_acl.cc: Change basic net functions to use THD instead of NET GRANT handling now uses read/write locks instead of mutex sql/sql_analyse.cc: Change basic net functions to use THD instead of NET sprintf() + strlen() -> my_sprintf() sql/sql_base.cc: More DBUG statements sql/sql_class.cc: Change basic net functions to use THD instead of NET warning and prepared statement handling sql/sql_class.h: Change basic net functions to use THD instead of NET warning and prepared statement handling sql/sql_db.cc: Code cleanup & optimization. sql/sql_delete.cc: Change basic net functions to use THD instead of NET sql/sql_derived.cc: Change basic net functions to use THD instead of NET sql/sql_do.cc: Change basic net functions to use THD instead of NET sql/sql_error.cc: Big rewrite of error handling. sql/sql_handler.cc: Change basic net functions to use THD instead of NET sql/sql_insert.cc: Change basic net functions to use THD instead of NET sql/sql_lex.cc: Change basic net functions to use THD instead of NET sql/sql_lex.h: Added param_count to st_select_lex_node sql/sql_list.h: Removed not needed error list. sql/sql_load.cc: Change basic net functions to use THD instead of NET sql/sql_parse.cc: Change basic net functions to use THD instead of NET Added alloc_query() to be able to chare query initialization code with prepared statements. Update of warning handling. Added create_select_for_variable() (for SHOW COUNT(*) WARNINGS) sql/sql_prepare.cc: Initial prepared statement handling sql/sql_rename.cc: Change basic net functions to use THD instead of NET sql/sql_repl.cc: Change basic net functions to use THD instead of NET sql/sql_select.cc: Small code cleanups Added missing initialization of error that caused some queries that returned an empty result set to fail sql/sql_select.h: Ensure that JOIN.error is properly initialized sql/sql_show.cc: Change basic net functions to use THD instead of NET A lot of optimization sql/sql_table.cc: Change basic net functions to use THD instead of NET Indentaion cleanup sql/sql_udf.cc: Change basic net functions to use THD instead of NET sql/sql_union.cc: Change basic net functions to use THD instead of NET sql/sql_update.cc: Change basic net functions to use THD instead of NET sql/sql_yacc.yy: Change basic net functions to use THD instead of NET Cleanup handling of SHOW COUNT(*) WARNINGS and SELECT LAST_INSERT_ID() sql/structs.h: Moved structures to files where they was used sql/table.cc: Don't accept empty database names sql/uniques.cc: Indentation cleanup sql/unireg.cc: Change basic net functions to use THD instead of NET sql/unireg.h: Added defaults for warnings and prepared statements strings/ctype-simple.c: optimization tests/client_test.c: Fixed wrong paramaters to printf()
545 lines
16 KiB
C++
545 lines
16 KiB
C++
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; either version 2 of the License, or
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(at your option) any later version.
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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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#ifdef __GNUC__
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#pragma interface /* gcc class implementation */
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#endif
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struct st_table_list;
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void item_init(void); /* Init item functions */
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class Item {
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Item(const Item &); /* Prevent use of these */
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void operator=(Item &);
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public:
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static void *operator new(size_t size) {return (void*) sql_alloc((uint) size); }
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static void operator delete(void *ptr,size_t size) {} /*lint -e715 */
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enum Type {FIELD_ITEM,FUNC_ITEM,SUM_FUNC_ITEM,STRING_ITEM,
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INT_ITEM,REAL_ITEM,NULL_ITEM,VARBIN_ITEM,
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COPY_STR_ITEM,FIELD_AVG_ITEM, DEFAULT_ITEM,
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PROC_ITEM,COND_ITEM,REF_ITEM,FIELD_STD_ITEM, CONST_ITEM,
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SUBSELECT_ITEM};
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enum cond_result { COND_UNDEF,COND_OK,COND_TRUE,COND_FALSE };
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String str_value; /* used to store value */
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my_string name; /* Name from select */
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Item *next;
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uint32 max_length;
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uint8 marker,decimals;
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my_bool maybe_null; /* If item may be null */
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my_bool null_value; /* if item is null */
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my_bool binary;
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my_bool unsigned_flag;
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my_bool with_sum_func;
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// alloc & destruct is done as start of select using sql_alloc
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Item();
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virtual ~Item() { name=0; } /*lint -e1509 */
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void set_name(const char *str,uint length=0);
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void init_make_field(Send_field *tmp_field,enum enum_field_types type);
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virtual bool fix_fields(THD *, struct st_table_list *, Item **);
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virtual int save_in_field(Field *field);
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virtual void save_org_in_field(Field *field)
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{ (void) save_in_field(field); }
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virtual bool send(THD *thd, String *str);
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virtual bool eq(const Item *, bool binary_cmp) const;
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virtual Item_result result_type () const { return REAL_RESULT; }
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virtual enum Type type() const =0;
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virtual double val()=0;
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virtual longlong val_int()=0;
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virtual String *val_str(String*)=0;
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virtual void make_field(Send_field *field)=0;
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virtual Field *tmp_table_field(TABLE *t_arg=(TABLE *)0) { return 0; }
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virtual const char *full_name() const { return name ? name : "???"; }
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virtual double val_result() { return val(); }
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virtual longlong val_int_result() { return val_int(); }
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virtual String *str_result(String* tmp) { return val_str(tmp); }
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virtual table_map used_tables() const { return (table_map) 0L; }
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virtual bool basic_const_item() const { return 0; }
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virtual Item *new_item() { return 0; } /* Only for const items */
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virtual cond_result eq_cmp_result() const { return COND_OK; }
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inline uint float_length(uint decimals_par) const
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{ return decimals != NOT_FIXED_DEC ? (DBL_DIG+2+decimals_par) : DBL_DIG+8;}
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virtual bool const_item() const { return used_tables() == 0; }
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virtual void print(String *str_arg) { str_arg->append(full_name()); }
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virtual void update_used_tables() {}
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virtual void split_sum_func(List<Item> &fields) {}
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virtual bool get_date(TIME *ltime,bool fuzzydate);
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virtual bool get_time(TIME *ltime);
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virtual bool is_null() { return 0; }
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};
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class st_select_lex;
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class Item_ident :public Item
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{
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public:
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const char *db_name;
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const char *table_name;
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const char *field_name;
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st_select_lex *depended_from;
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Item_ident(const char *db_name_par,const char *table_name_par,
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const char *field_name_par)
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:db_name(db_name_par),table_name(table_name_par),
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field_name(field_name_par), depended_from(0)
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{ name = (char*) field_name_par; }
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const char *full_name() const;
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};
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class Item_field :public Item_ident
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{
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void set_field(Field *field);
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public:
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Field *field,*result_field;
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// Item_field() {}
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Item_field(const char *db_par,const char *table_name_par,
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const char *field_name_par)
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:Item_ident(db_par,table_name_par,field_name_par),field(0),result_field(0)
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{}
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Item_field(Field *field);
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enum Type type() const { return FIELD_ITEM; }
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bool eq(const Item *item, bool binary_cmp) const;
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double val();
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longlong val_int();
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String *val_str(String*);
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double val_result();
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longlong val_int_result();
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String *str_result(String* tmp);
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bool send(THD *thd, String *str_arg)
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{
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return result_field->send(thd,str_arg);
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}
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void make_field(Send_field *field);
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bool fix_fields(THD *, struct st_table_list *, Item **);
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int save_in_field(Field *field);
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void save_org_in_field(Field *field);
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table_map used_tables() const;
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enum Item_result result_type () const
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{
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return field->result_type();
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}
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Field *tmp_table_field(TABLE *t_arg=(TABLE *)0) { return result_field; }
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bool get_date(TIME *ltime,bool fuzzydate);
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bool get_time(TIME *ltime);
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bool is_null() { return field->is_null(); }
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};
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class Item_null :public Item
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{
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public:
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Item_null(char *name_par=0)
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{ maybe_null=null_value=TRUE; name= name_par ? name_par : (char*) "NULL";}
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enum Type type() const { return NULL_ITEM; }
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bool eq(const Item *item, bool binary_cmp) const;
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double val();
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longlong val_int();
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String *val_str(String *str);
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void make_field(Send_field *field);
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int save_in_field(Field *field);
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enum Item_result result_type () const
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{ return STRING_RESULT; }
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bool send(THD *thd, String *str);
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bool basic_const_item() const { return 1; }
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Item *new_item() { return new Item_null(name); }
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bool is_null() { return 1; }
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};
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class Item_param :public Item
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{
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public:
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longlong int_value;
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double real_value;
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enum Item_result item_result_type;
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enum Type item_type;
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enum enum_field_types buffer_type;
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my_bool long_data_supplied;
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Item_param(char *name_par=0)
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{
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name= name_par ? name_par : (char*) "?";
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long_data_supplied = false;
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item_type = STRING_ITEM;
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item_result_type = STRING_RESULT;
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}
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enum Type type() const { return item_type; }
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double val();
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longlong val_int();
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String *val_str(String*);
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void make_field(Send_field *field);
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int save_in_field(Field *field);
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void set_null();
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void set_int(longlong i);
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void set_double(double i);
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void set_value(const char *str, uint length);
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void set_long_str(const char *str, ulong length);
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void set_long_binary(const char *str, ulong length);
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void set_longdata(const char *str, ulong length);
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void set_long_end();
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void reset() {}
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enum Item_result result_type () const
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{ return item_result_type; }
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Item *new_item() { return new Item_param(name); }
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};
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class Item_int :public Item
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{
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public:
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const longlong value;
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Item_int(int32 i,uint length=11) :value((longlong) i)
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{ max_length=length;}
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#ifdef HAVE_LONG_LONG
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Item_int(longlong i,uint length=21) :value(i)
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{ max_length=length;}
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#endif
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Item_int(const char *str_arg,longlong i,uint length) :value(i)
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{ max_length=length; name=(char*) str_arg;}
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Item_int(const char *str_arg) :
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value(str_arg[0] == '-' ? strtoll(str_arg,(char**) 0,10) :
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(longlong) strtoull(str_arg,(char**) 0,10))
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{ max_length= (uint) strlen(str_arg); name=(char*) str_arg;}
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enum Type type() const { return INT_ITEM; }
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virtual enum Item_result result_type () const { return INT_RESULT; }
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longlong val_int() { return value; }
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double val() { return (double) value; }
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String *val_str(String*);
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void make_field(Send_field *field);
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int save_in_field(Field *field);
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bool basic_const_item() const { return 1; }
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Item *new_item() { return new Item_int(name,value,max_length); }
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void print(String *str);
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};
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class Item_uint :public Item_int
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{
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public:
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Item_uint(const char *str_arg, uint length) :
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Item_int(str_arg, (longlong) strtoull(str_arg,(char**) 0,10), length) {}
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Item_uint(uint32 i) :Item_int((longlong) i, 10) {}
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double val() { return ulonglong2double(value); }
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String *val_str(String*);
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void make_field(Send_field *field);
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Item *new_item() { return new Item_uint(name,max_length); }
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void print(String *str);
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};
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class Item_real :public Item
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{
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public:
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const double value;
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// Item_real() :value(0) {}
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Item_real(const char *str_arg,uint length) :value(atof(str_arg))
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{
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name=(char*) str_arg;
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decimals=(uint8) nr_of_decimals(str_arg);
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max_length=length;
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}
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Item_real(const char *str,double val_arg,uint decimal_par,uint length)
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:value(val_arg)
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{
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name=(char*) str;
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decimals=(uint8) decimal_par;
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max_length=length;
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}
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Item_real(double value_par) :value(value_par) {}
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int save_in_field(Field *field);
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enum Type type() const { return REAL_ITEM; }
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double val() { return value; }
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longlong val_int() { return (longlong) (value+(value > 0 ? 0.5 : -0.5));}
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String *val_str(String*);
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void make_field(Send_field *field);
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bool basic_const_item() const { return 1; }
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Item *new_item() { return new Item_real(name,value,decimals,max_length); }
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};
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class Item_float :public Item_real
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{
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public:
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Item_float(const char *str,uint length) :Item_real(str,length)
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{
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decimals=NOT_FIXED_DEC;
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max_length=DBL_DIG+8;
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}
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};
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class Item_string :public Item
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{
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public:
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Item_string(const char *str,uint length,CHARSET_INFO *cs)
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{
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str_value.set(str,length,cs);
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max_length=length;
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name=(char*) str_value.ptr();
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decimals=NOT_FIXED_DEC;
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}
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Item_string(const char *name_par,const char *str,uint length,CHARSET_INFO *cs)
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{
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str_value.set(str,length,cs);
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max_length=length;
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name=(char*) name_par;
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decimals=NOT_FIXED_DEC;
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}
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~Item_string() {}
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enum Type type() const { return STRING_ITEM; }
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double val() { return atof(str_value.ptr()); }
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longlong val_int() { return strtoll(str_value.ptr(),(char**) 0,10); }
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String *val_str(String*) { return (String*) &str_value; }
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int save_in_field(Field *field);
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void make_field(Send_field *field);
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enum Item_result result_type () const { return STRING_RESULT; }
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bool basic_const_item() const { return 1; }
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bool eq(const Item *item, bool binary_cmp) const;
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Item *new_item() { return new Item_string(name,str_value.ptr(),max_length,default_charset_info); }
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String *const_string() { return &str_value; }
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inline void append(char *str,uint length) { str_value.append(str,length); }
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void print(String *str);
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};
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/* For INSERT ... VALUES (DEFAULT) */
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class Item_default :public Item
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{
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public:
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Item_default() { name= (char*) "DEFAULT"; }
|
|
enum Type type() const { return DEFAULT_ITEM; }
|
|
void make_field(Send_field *field) {}
|
|
int save_in_field(Field *field)
|
|
{
|
|
field->set_default();
|
|
return 0;
|
|
}
|
|
virtual double val() { return 0.0; }
|
|
virtual longlong val_int() { return 0; }
|
|
virtual String *val_str(String *str) { return 0; }
|
|
bool basic_const_item() const { return 1; }
|
|
};
|
|
|
|
|
|
/* for show tables */
|
|
|
|
class Item_datetime :public Item_string
|
|
{
|
|
public:
|
|
Item_datetime(const char *item_name): Item_string(item_name,"",0,default_charset_info)
|
|
{ max_length=19;}
|
|
void make_field(Send_field *field);
|
|
};
|
|
|
|
class Item_empty_string :public Item_string
|
|
{
|
|
public:
|
|
Item_empty_string(const char *header,uint length) :Item_string("",0,default_charset_info)
|
|
{ name=(char*) header; max_length=length;}
|
|
};
|
|
|
|
class Item_varbinary :public Item
|
|
{
|
|
public:
|
|
Item_varbinary(const char *str,uint str_length,CHARSET_INFO *cs);
|
|
~Item_varbinary() {}
|
|
enum Type type() const { return VARBIN_ITEM; }
|
|
double val() { return (double) Item_varbinary::val_int(); }
|
|
longlong val_int();
|
|
String *val_str(String*) { return &str_value; }
|
|
int save_in_field(Field *field);
|
|
void make_field(Send_field *field);
|
|
enum Item_result result_type () const { return INT_RESULT; }
|
|
};
|
|
|
|
|
|
class Item_result_field :public Item /* Item with result field */
|
|
{
|
|
public:
|
|
Field *result_field; /* Save result here */
|
|
Item_result_field() :result_field(0) {}
|
|
~Item_result_field() {} /* Required with gcc 2.95 */
|
|
Field *tmp_table_field(TABLE *t_arg=(TABLE *)0) { return result_field; }
|
|
table_map used_tables() const { return 1; }
|
|
virtual void fix_length_and_dec()=0;
|
|
};
|
|
|
|
|
|
class Item_ref :public Item_ident
|
|
{
|
|
public:
|
|
Item **ref;
|
|
Item_ref(char *db_par,char *table_name_par,char *field_name_par)
|
|
:Item_ident(db_par,table_name_par,field_name_par),ref(0) {}
|
|
Item_ref(Item **item, char *table_name_par,char *field_name_par)
|
|
:Item_ident(NullS,table_name_par,field_name_par),ref(item) {}
|
|
enum Type type() const { return REF_ITEM; }
|
|
bool eq(const Item *item, bool binary_cmp) const
|
|
{ return (*ref)->eq(item, binary_cmp); }
|
|
~Item_ref() { if (ref) delete *ref; }
|
|
double val()
|
|
{
|
|
double tmp=(*ref)->val_result();
|
|
null_value=(*ref)->null_value;
|
|
return tmp;
|
|
}
|
|
longlong val_int()
|
|
{
|
|
longlong tmp=(*ref)->val_int_result();
|
|
null_value=(*ref)->null_value;
|
|
return tmp;
|
|
}
|
|
String *val_str(String* tmp)
|
|
{
|
|
tmp=(*ref)->str_result(tmp);
|
|
null_value=(*ref)->null_value;
|
|
return tmp;
|
|
}
|
|
bool is_null()
|
|
{
|
|
(void) (*ref)->val_int_result();
|
|
return (*ref)->null_value;
|
|
}
|
|
bool get_date(TIME *ltime,bool fuzzydate)
|
|
{
|
|
return (null_value=(*ref)->get_date(ltime,fuzzydate));
|
|
}
|
|
bool send(THD *thd, String *tmp) { return (*ref)->send(thd, tmp); }
|
|
void make_field(Send_field *field) { (*ref)->make_field(field); }
|
|
bool fix_fields(THD *, struct st_table_list *, Item **);
|
|
int save_in_field(Field *field) { return (*ref)->save_in_field(field); }
|
|
void save_org_in_field(Field *field) { (*ref)->save_org_in_field(field); }
|
|
enum Item_result result_type () const { return (*ref)->result_type(); }
|
|
table_map used_tables() const { return (*ref)->used_tables(); }
|
|
};
|
|
|
|
|
|
/*
|
|
The following class is used to optimize comparing of date columns
|
|
We need to save the original item, to be able to set the field to the
|
|
original value in 'opt_range'.
|
|
*/
|
|
|
|
class Item_int_with_ref :public Item_int
|
|
{
|
|
Item *ref;
|
|
public:
|
|
Item_int_with_ref(longlong i, Item *ref_arg) :Item_int(i), ref(ref_arg)
|
|
{}
|
|
int save_in_field(Field *field)
|
|
{
|
|
return ref->save_in_field(field);
|
|
}
|
|
};
|
|
|
|
|
|
#include "gstream.h"
|
|
#include "spatial.h"
|
|
#include "item_sum.h"
|
|
#include "item_func.h"
|
|
#include "item_cmpfunc.h"
|
|
#include "item_strfunc.h"
|
|
#include "item_timefunc.h"
|
|
#include "item_uniq.h"
|
|
#include "item_subselect.h"
|
|
|
|
class Item_copy_string :public Item
|
|
{
|
|
public:
|
|
Item *item;
|
|
Item_copy_string(Item *i) :item(i)
|
|
{
|
|
null_value=maybe_null=item->maybe_null;
|
|
decimals=item->decimals;
|
|
max_length=item->max_length;
|
|
name=item->name;
|
|
}
|
|
~Item_copy_string() { delete item; }
|
|
enum Type type() const { return COPY_STR_ITEM; }
|
|
enum Item_result result_type () const { return STRING_RESULT; }
|
|
double val()
|
|
{ return null_value ? 0.0 : atof(str_value.c_ptr()); }
|
|
longlong val_int()
|
|
{ return null_value ? LL(0) : strtoll(str_value.c_ptr(),(char**) 0,10); }
|
|
String *val_str(String*);
|
|
void make_field(Send_field *field) { item->make_field(field); }
|
|
void copy();
|
|
table_map used_tables() const { return (table_map) 1L; }
|
|
bool const_item() const { return 0; }
|
|
bool is_null() { return null_value; }
|
|
};
|
|
|
|
|
|
class Item_buff :public Sql_alloc
|
|
{
|
|
public:
|
|
my_bool null_value;
|
|
Item_buff() :null_value(0) {}
|
|
virtual bool cmp(void)=0;
|
|
virtual ~Item_buff(); /*line -e1509 */
|
|
};
|
|
|
|
class Item_str_buff :public Item_buff
|
|
{
|
|
Item *item;
|
|
String value,tmp_value;
|
|
public:
|
|
Item_str_buff(Item *arg) :item(arg),value(arg->max_length) {}
|
|
bool cmp(void);
|
|
~Item_str_buff(); // Deallocate String:s
|
|
};
|
|
|
|
|
|
class Item_real_buff :public Item_buff
|
|
{
|
|
Item *item;
|
|
double value;
|
|
public:
|
|
Item_real_buff(Item *item_par) :item(item_par),value(0.0) {}
|
|
bool cmp(void);
|
|
};
|
|
|
|
class Item_int_buff :public Item_buff
|
|
{
|
|
Item *item;
|
|
longlong value;
|
|
public:
|
|
Item_int_buff(Item *item_par) :item(item_par),value(0) {}
|
|
bool cmp(void);
|
|
};
|
|
|
|
|
|
class Item_field_buff :public Item_buff
|
|
{
|
|
char *buff;
|
|
Field *field;
|
|
uint length;
|
|
|
|
public:
|
|
Item_field_buff(Item_field *item)
|
|
{
|
|
field=item->field;
|
|
buff= (char*) sql_calloc(length=field->pack_length());
|
|
}
|
|
bool cmp(void);
|
|
};
|
|
|
|
extern Item_buff *new_Item_buff(Item *item);
|
|
extern Item_result item_cmp_type(Item_result a,Item_result b);
|
|
extern Item *resolve_const_item(Item *item,Item *cmp_item);
|
|
extern bool field_is_equal_to_item(Field *field,Item *item);
|