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+#ifndef SQL_I_S_INCLUDED
+#define SQL_I_S_INCLUDED
+/* Copyright (c) 2000, 2017, Oracle and/or its affiliates.
+ Copyright (c) 2009, 2019, MariaDB
+
+ 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; version 2 of the License.
+
+ 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 02110-1335 USA */
+
+#include "sql_const.h" // MAX_FIELD_VARCHARLENGTH
+#include "sql_basic_types.h" // enum_nullability
+#include "sql_string.h" // strlen, MY_CS_NAME_SIZE
+#include "lex_string.h" // LEX_CSTRING
+#include "mysql_com.h" // enum_field_types
+#include "my_time.h" // TIME_SECOND_PART_DIGITS
+#include "sql_type.h" // Type_handler_xxx
+
+struct TABLE_LIST;
+struct TABLE;
+typedef class Item COND;
+
+#ifdef MYSQL_CLIENT
+#error MYSQL_CLIENT must not be defined
+#endif // MYSQL_CLIENT
+
+
+bool schema_table_store_record(THD *thd, TABLE *table);
+COND *make_cond_for_info_schema(THD *thd, COND *cond, TABLE_LIST *table);
+
+
+enum enum_show_open_table
+{
+ SKIP_OPEN_TABLE= 0U, // do not open table
+ OPEN_FRM_ONLY= 1U, // open FRM file only
+ OPEN_FULL_TABLE= 2U // open FRM,MYD, MYI files
+};
+
+
+enum enum_show_default
+{
+ DEFAULT_TYPE_IMPLICIT= 0,
+ DEFAULT_NONE
+};
+
+
+namespace Show {
+class Type
+{
+ /**
+ This denotes data type for the column. For the most part, there seems to
+ be one entry in the enum for each SQL data type, although there seem to
+ be a number of additional entries in the enum.
+ */
+ const Type_handler *m_type_handler;
+ /**
+ For string-type columns, this is the maximum number of
+ characters. Otherwise, it is the 'display-length' for the column.
+ */
+ uint m_char_length;
+ uint m_unsigned_flag;
+ const Typelib *m_typelib;
+public:
+ Type(const Type_handler *th, uint length, uint unsigned_flag,
+ const Typelib *typelib= NULL)
+ :m_type_handler(th), m_char_length(length), m_unsigned_flag(unsigned_flag),
+ m_typelib(typelib)
+ { }
+ const Type_handler *type_handler() const { return m_type_handler; }
+ uint char_length() const { return m_char_length; }
+ uint decimal_precision() const { return (m_char_length / 100) % 100; }
+ uint decimal_scale() const { return m_char_length % 10; }
+ uint fsp() const
+ {
+ DBUG_ASSERT(m_char_length <= TIME_SECOND_PART_DIGITS);
+ return m_char_length;
+ }
+ uint unsigned_flag() const { return m_unsigned_flag; }
+ const Typelib *typelib() const { return m_typelib; }
+};
+} // namespace Show
+
+
+
+class ST_FIELD_INFO: public Show::Type
+{
+protected:
+ LEX_CSTRING m_name; // I_S column name
+ enum_nullability m_nullability; // NULLABLE or NOT NULL
+ enum_show_default m_def; // Whether has a DEFAULT value
+ LEX_CSTRING m_old_name; // SHOW column name
+ enum_show_open_table m_open_method;
+public:
+ ST_FIELD_INFO(const LEX_CSTRING &name, const Type &type,
+ enum_nullability nullability,
+ enum_show_default def,
+ LEX_CSTRING &old_name,
+ enum_show_open_table open_method)
+ :Type(type), m_name(name),
+ m_nullability(nullability),
+ m_def(def),
+ m_old_name(old_name),
+ m_open_method(open_method)
+ { }
+ ST_FIELD_INFO(const char *name, const Type &type,
+ enum_nullability nullability,
+ enum_show_default def,
+ const char *old_name,
+ enum_show_open_table open_method)
+ :Type(type),
+ m_nullability(nullability),
+ m_def(def),
+ m_open_method(open_method)
+ {
+ m_name.str= name;
+ m_name.length= safe_strlen(name);
+ m_old_name.str= old_name;
+ m_old_name.length= safe_strlen(old_name);
+ }
+ const LEX_CSTRING &name() const { return m_name; }
+ bool nullable() const { return m_nullability == NULLABLE; }
+ enum_show_default def() const { return m_def; }
+ const LEX_CSTRING &old_name() const { return m_old_name; }
+ enum_show_open_table open_method() const { return m_open_method; }
+ bool end_marker() const { return m_name.str == NULL; }
+};
+
+
+namespace Show
+{
+
+
+class Enum: public Type
+{
+public:
+ Enum(const Typelib *typelib) :Type(&type_handler_enum, 0, false, typelib) { }
+};
+
+
+class Blob: public Type
+{
+public:
+ Blob(uint length) :Type(&type_handler_blob, length, false) { }
+};
+
+
+class Varchar: public Type
+{
+public:
+ Varchar(uint length) :Type(&type_handler_varchar, length, false)
+ {
+ DBUG_ASSERT(length * 3 <= MAX_FIELD_VARCHARLENGTH);
+ }
+};
+
+
+class Longtext: public Type
+{
+public:
+ Longtext(uint length) :Type(&type_handler_varchar, length, false) { }
+};
+
+
+class Yesno: public Varchar
+{
+public:
+ Yesno(): Varchar(3) { }
+};
+
+
+class Catalog: public Varchar
+{
+public:
+ Catalog(): Varchar(FN_REFLEN) { }
+};
+
+
+class Name: public Varchar
+{
+public:
+ Name(): Varchar(NAME_CHAR_LEN) { }
+};
+
+
+class Definer: public Varchar
+{
+public:
+ Definer(): Varchar(DEFINER_CHAR_LENGTH) { }
+};
+
+
+class Userhost: public Varchar
+{
+public:
+ Userhost(): Varchar(USERNAME_CHAR_LENGTH + HOSTNAME_LENGTH + 2) { }
+};
+
+
+class CSName: public Varchar
+{
+public:
+ CSName(): Varchar(MY_CS_NAME_SIZE) { }
+};
+
+
+class SQLMode: public Varchar
+{
+public:
+ SQLMode(): Varchar(32*256) { }
+};
+
+
+class Datetime: public Type
+{
+public:
+ Datetime(uint dec) :Type(&type_handler_datetime2, dec, false) { }
+};
+
+
+class Decimal: public Type
+{
+public:
+ Decimal(uint length) :Type(&type_handler_newdecimal, length, false) { }
+};
+
+
+class ULonglong: public Type
+{
+public:
+ ULonglong(uint length) :Type(&type_handler_ulonglong, length, true) { }
+ ULonglong() :ULonglong(MY_INT64_NUM_DECIMAL_DIGITS) { }
+};
+
+
+class ULong: public Type
+{
+public:
+ ULong(uint length) :Type(&type_handler_ulong, length, true) { }
+ ULong() :ULong(MY_INT32_NUM_DECIMAL_DIGITS) { }
+};
+
+
+class SLonglong: public Type
+{
+public:
+ SLonglong(uint length) :Type(&type_handler_slonglong, length, false) { }
+ SLonglong() :SLonglong(MY_INT64_NUM_DECIMAL_DIGITS) { }
+};
+
+
+class SLong: public Type
+{
+public:
+ SLong(uint length) :Type(&type_handler_slong, length, false) { }
+ SLong() :SLong(MY_INT32_NUM_DECIMAL_DIGITS) { }
+};
+
+
+class SShort: public Type
+{
+public:
+ SShort(uint length) :Type(&type_handler_sshort, length, false) { }
+};
+
+
+class STiny: public Type
+{
+public:
+ STiny(uint length) :Type(&type_handler_stiny, length, false) { }
+};
+
+
+class Double: public Type
+{
+public:
+ Double(uint length) :Type(&type_handler_double, length, false) { }
+};
+
+
+class Float: public Type
+{
+public:
+ Float(uint length) :Type(&type_handler_float, length, false) { }
+};
+
+
+
+class Column: public ST_FIELD_INFO
+{
+public:
+ Column(const char *name, const Type &type,
+ enum_nullability nullability,
+ enum_show_default def,
+ const char *old_name,
+ enum_show_open_table open_method= SKIP_OPEN_TABLE)
+ :ST_FIELD_INFO(name, type, nullability, def, old_name, open_method)
+ { }
+ Column(const char *name, const Type &type, enum_nullability nullability,
+ enum_show_default def,
+ enum_show_open_table open_method= SKIP_OPEN_TABLE)
+ :ST_FIELD_INFO(name, type, nullability, def, NullS, open_method)
+ { }
+ Column(const char *name, const Type &type,
+ enum_nullability nullability,
+ const char *old_name,
+ enum_show_open_table open_method= SKIP_OPEN_TABLE)
+ :ST_FIELD_INFO(name, type, nullability, DEFAULT_TYPE_IMPLICIT,
+ old_name, open_method)
+ { }
+ Column(const char *name, const Type &type,
+ enum_nullability nullability,
+ enum_show_open_table open_method= SKIP_OPEN_TABLE)
+ :ST_FIELD_INFO(name, type, nullability, DEFAULT_TYPE_IMPLICIT,
+ NullS, open_method)
+ { }
+};
+
+
+// End marker
+class CEnd: public Column
+{
+public:
+ CEnd() :Column(NullS, Varchar(0), NOT_NULL, NullS, SKIP_OPEN_TABLE) { }
+};
+
+
+} // namespace Show
+
+
+struct TABLE_LIST;
+typedef class Item COND;
+
+typedef struct st_schema_table
+{
+ const char *table_name;
+ ST_FIELD_INFO *fields_info;
+ /* for FLUSH table_name */
+ int (*reset_table) ();
+ /* Fill table with data */
+ int (*fill_table) (THD *thd, TABLE_LIST *tables, COND *cond);
+ /* Handle fileds for old SHOW */
+ int (*old_format) (THD *thd, struct st_schema_table *schema_table);
+ int (*process_table) (THD *thd, TABLE_LIST *tables, TABLE *table,
+ bool res, const LEX_CSTRING *db_name,
+ const LEX_CSTRING *table_name);
+ int idx_field1, idx_field2;
+ bool hidden;
+ uint i_s_requested_object; /* the object we need to open(TABLE | VIEW) */
+} ST_SCHEMA_TABLE;
+
+
+#endif // SQL_I_S_INCLUDED