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A cleanup for MDEV-13916 Enforce check constraint on JSON type

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1. Renaming Type_handler_json to Type_handler_json_longtext
   There will be other JSON handlers soon, e.g. Type_handler_json_varchar.

2. Making the code more symmetric for data types:

- Adding a new virtual method
  Type_handler::Column_definition_validate_check_constraint()
- Moving JSON-specific code from sql_yacc.yy to
  Type_handler_json_longtext::Column_definition_validate_check_constraint()

3. Adding new files sql_type_json.cc and sql_type_json.h
   and moving Type_handler+JSON related code into these files.
This commit is contained in:
Alexander Barkov
2019-02-14 14:29:55 +04:00
parent 568dd5293c
commit 62c0ac2da6
12 changed files with 126 additions and 45 deletions
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3
sql/sql_lex.h
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@ -148,7 +148,7 @@ public:
bool copy_or_convert(THD *thd, const Lex_ident_cli_st *str, CHARSET_INFO *cs);
bool is_null() const { return str == NULL; }
bool to_size_number(ulonglong *to) const;
void set_valid_utf8(LEX_CSTRING *name)
void set_valid_utf8(const LEX_CSTRING *name)
{
DBUG_ASSERT(Well_formed_prefix(system_charset_info, name->str,
name->length).length() == name->length);
@ -4640,6 +4640,5 @@ Item* handle_sql2003_note184_exception(THD *thd, Item* left, bool equal,
void sp_create_assignment_lex(THD *thd, bool no_lookahead);
bool sp_create_assignment_instr(THD *thd, bool no_lookahead);
Virtual_column_info *make_json_valid_expr(THD *thd, LEX_CSTRING *field_name);
#endif /* MYSQL_SERVER */
#endif /* SQL_LEX_INCLUDED */