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cleanup: renames

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enum_mark_columns -> enum_column_usage
mark_used_columns -> column_usage

further commits will replace MARK_COLUMN_NONE with
COLUMN_READ and COLUMN_WRITE that convey the intention
without causing columns to be marked
This commit is contained in:
Sergei Golubchik
2018-02-09 19:43:42 +01:00
parent 8cd3d2d941
commit 103715d0fa
10 changed files with 65 additions and 63 deletions
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28
sql/sql_class.h
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@ -92,8 +92,21 @@ enum enum_slave_run_triggers_for_rbr { SLAVE_RUN_TRIGGERS_FOR_RBR_NO,
SLAVE_RUN_TRIGGERS_FOR_RBR_LOGGING};
enum enum_slave_type_conversions { SLAVE_TYPE_CONVERSIONS_ALL_LOSSY,
SLAVE_TYPE_CONVERSIONS_ALL_NON_LOSSY};
enum enum_mark_columns
/*
MARK_COLUMNS_NONE: It is unknown whether the column will be read or written
MARK_COLUMNS_READ: A column is goind to be read.
A bit in read set is set to inform handler that the field
is to be read. If field list contains duplicates, then
thd->dup_field is set to point to the last found
duplicate.
MARK_COLUMNS_WRITE: A column is going to be written to.
A bit is set in write set to inform handler that it needs
to update this field in write_row and update_row.
*/
enum enum_column_usage
{ MARK_COLUMNS_NONE, MARK_COLUMNS_READ, MARK_COLUMNS_WRITE};
enum enum_filetype { FILETYPE_CSV, FILETYPE_XML };
enum enum_binlog_row_image {
@ -1076,18 +1089,7 @@ public:
*/
ulong id;
/*
MARK_COLUMNS_NONE: Means mark_used_colums is not set and no indicator to
handler of fields used is set
MARK_COLUMNS_READ: Means a bit in read set is set to inform handler
that the field is to be read. If field list contains
duplicates, then thd->dup_field is set to point
to the last found duplicate.
MARK_COLUMNS_WRITE: Means a bit is set in write set to inform handler
that it needs to update this field in write_row
and update_row.
*/
enum enum_mark_columns mark_used_columns;
enum enum_column_usage column_usage;
LEX_CSTRING name; /* name for named prepared statements */
LEX *lex; // parse tree descriptor