diff options
Diffstat (limited to 'sql/structs.h')
| -rw-r--r-- | sql/structs.h | 156 |
1 files changed, 132 insertions, 24 deletions
diff --git a/sql/structs.h b/sql/structs.h index 57d895c30c5..67fb0d5dd66 100644 --- a/sql/structs.h +++ b/sql/structs.h @@ -2,6 +2,7 @@ #define STRUCTS_INCLUDED /* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. + Copyright (c) 2017, MariaDB Corporation. 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 @@ -64,9 +65,11 @@ typedef struct st_keyfile_info { /* used with ha_info() */ typedef struct st_key_part_info { /* Info about a key part */ - Field *field; - uint offset; /* offset in record (from 0) */ - uint null_offset; /* Offset to null_bit in record */ + Field *field; /* the Field object for the indexed + prefix of the original table Field. + NOT necessarily the original Field */ + uint offset; /* Offset in record (from 0) */ + uint null_offset; /* Offset to null_bit in record */ /* Length of key part in bytes, excluding NULL flag and length bytes */ uint16 length; /* @@ -77,9 +80,8 @@ typedef struct st_key_part_info { /* Info about a key part */ */ uint16 store_length; uint16 key_type; - /* Fieldnr begins counting from 1 */ - uint16 fieldnr; /* Fieldnum in UNIREG */ - uint16 key_part_flag; /* 0 or HA_REVERSE_SORT */ + uint16 fieldnr; /* Fieldnr begins counting from 1 */ + uint16 key_part_flag; /* 0 or HA_REVERSE_SORT */ uint8 type; uint8 null_bit; /* Position to null_bit */ } KEY_PART_INFO ; @@ -330,26 +332,26 @@ typedef struct st_index_stats /* Bits in form->update */ -#define REG_MAKE_DUPP 1 /* Make a copy of record when read */ -#define REG_NEW_RECORD 2 /* Write a new record if not found */ -#define REG_UPDATE 4 /* Uppdate record */ -#define REG_DELETE 8 /* Delete found record */ -#define REG_PROG 16 /* User is updating database */ -#define REG_CLEAR_AFTER_WRITE 32 -#define REG_MAY_BE_UPDATED 64 -#define REG_AUTO_UPDATE 64 /* Used in D-forms for scroll-tables */ -#define REG_OVERWRITE 128 -#define REG_SKIP_DUP 256 +#define REG_MAKE_DUPP 1U /* Make a copy of record when read */ +#define REG_NEW_RECORD 2U /* Write a new record if not found */ +#define REG_UPDATE 4U /* Uppdate record */ +#define REG_DELETE 8U /* Delete found record */ +#define REG_PROG 16U /* User is updating database */ +#define REG_CLEAR_AFTER_WRITE 32U +#define REG_MAY_BE_UPDATED 64U +#define REG_AUTO_UPDATE 64U /* Used in D-forms for scroll-tables */ +#define REG_OVERWRITE 128U +#define REG_SKIP_DUP 256U /* Bits in form->status */ -#define STATUS_NO_RECORD (1+2) /* Record isn't usably */ -#define STATUS_GARBAGE 1 -#define STATUS_NOT_FOUND 2 /* No record in database when needed */ -#define STATUS_NO_PARENT 4 /* Parent record wasn't found */ -#define STATUS_NOT_READ 8 /* Record isn't read */ -#define STATUS_UPDATED 16 /* Record is updated by formula */ -#define STATUS_NULL_ROW 32 /* table->null_row is set */ -#define STATUS_DELETED 64 +#define STATUS_NO_RECORD (1U+2U) /* Record isn't usable */ +#define STATUS_GARBAGE 1U +#define STATUS_NOT_FOUND 2U /* No record in database when needed */ +#define STATUS_NO_PARENT 4U /* Parent record wasn't found */ +#define STATUS_NOT_READ 8U /* Record isn't read */ +#define STATUS_UPDATED 16U /* Record is updated by formula */ +#define STATUS_NULL_ROW 32U /* table->null_row is set */ +#define STATUS_DELETED 64U /* Such interval is "discrete": it is the set of @@ -557,4 +559,110 @@ public: }; +struct Lex_length_and_dec_st +{ +private: + const char *m_length; + const char *m_dec; +public: + void set(const char *length, const char *dec) + { + m_length= length; + m_dec= dec; + } + const char *length() const { return m_length; } + const char *dec() const { return m_dec; } +}; + + +struct Lex_field_type_st: public Lex_length_and_dec_st +{ +private: + enum_field_types m_type; + void set(enum_field_types type, const char *length, const char *dec) + { + m_type= type; + Lex_length_and_dec_st::set(length, dec); + } +public: + void set(enum_field_types type, Lex_length_and_dec_st length_and_dec) + { + m_type= type; + Lex_length_and_dec_st::operator=(length_and_dec); + } + void set(enum_field_types type, const char *length) + { + set(type, length, 0); + } + void set(enum_field_types type) + { + set(type, 0, 0); + } + enum_field_types field_type() const { return m_type; } +}; + + +struct Lex_dyncol_type_st: public Lex_length_and_dec_st +{ +private: + int m_type; // enum_dynamic_column_type is not visible here, so use int +public: + void set(int type, const char *length, const char *dec) + { + m_type= type; + Lex_length_and_dec_st::set(length, dec); + } + void set(int type, Lex_length_and_dec_st length_and_dec) + { + m_type= type; + Lex_length_and_dec_st::operator=(length_and_dec); + } + void set(int type, const char *length) + { + set(type, length, 0); + } + void set(int type) + { + set(type, 0, 0); + } + int dyncol_type() const { return m_type; } +}; + + +class Load_data_param +{ +protected: + CHARSET_INFO *m_charset; // Character set of the file + ulonglong m_fixed_length; // Sum of target field lengths for fixed format + bool m_is_fixed_length; + bool m_use_blobs; +public: + Load_data_param(CHARSET_INFO *cs, bool is_fixed_length): + m_charset(cs), + m_fixed_length(0), + m_is_fixed_length(is_fixed_length), + m_use_blobs(false) + { } + bool add_outvar_field(THD *thd, const Field *field); + bool add_outvar_user_var(THD *thd); + CHARSET_INFO *charset() const { return m_charset; } + bool is_fixed_length() const { return m_is_fixed_length; } + bool use_blobs() const { return m_use_blobs; } +}; + + +class Load_data_outvar +{ +public: + virtual ~Load_data_outvar() {} + virtual bool load_data_set_null(THD *thd, const Load_data_param *param)= 0; + virtual bool load_data_set_value(THD *thd, const char *pos, uint length, + const Load_data_param *param)= 0; + virtual bool load_data_set_no_data(THD *thd, const Load_data_param *param)= 0; + virtual void load_data_print_for_log_event(THD *thd, class String *to) const= 0; + virtual bool load_data_add_outvar(THD *thd, Load_data_param *param) const= 0; + virtual uint load_data_fixed_length() const= 0; +}; + + #endif /* STRUCTS_INCLUDED */ |