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0.1: SQL-level System Versioning

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This commit is contained in:
Daniel Fiala
2016-06-19 07:38:28 +01:00
committed by Aleksey Midenkov
parent 14bdfa8541
commit be6f2d302c
115 changed files with 4055 additions and 1101 deletions
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43
sql/handler.h
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@ -1660,6 +1660,36 @@ struct Schema_specification_st
};
struct System_versioning_info
{
struct
{
String *start, *end;
} period_for_system_time;
struct
{
String *start;
String *end;
} generated_as_row;
void set_period_for_system_time(String *start, String *end)
{
period_for_system_time.start = start;
period_for_system_time.end = end;
}
void set_period_for_system_time()
{
set_period_for_system_time(NULL, NULL);
}
/** User has added 'WITH SYSTEM VERSIONING' to table definition */
bool declared_system_versioning;
/** Table described by this structure have enabled system versioning */
bool versioned;
};
/**
A helper struct for table DDL statements, e.g.:
CREATE [OR REPLACE] [TEMPORARY]
@ -1734,6 +1764,8 @@ struct Table_scope_and_contents_source_st
bool table_was_deleted;
sequence_definition *seq_create_info;
System_versioning_info system_versioning_info;
void init()
{
bzero(this, sizeof(*this));
@ -1744,6 +1776,17 @@ struct Table_scope_and_contents_source_st
db_type= tmp_table() ? ha_default_tmp_handlerton(thd)
: ha_default_handlerton(thd);
}
bool versioned()
{
return system_versioning_info.versioned;
}
const System_versioning_info *get_system_versioning_info()
{
if (!versioned())
return NULL;
return &system_versioning_info;
}
};