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MDEV-19125 Change Send_field::type from enum_field_types to Type_handler*

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This commit is contained in:
Alexander Barkov
2019-04-01 20:29:45 +04:00
parent e10f9e6c81
commit 4d12a6458e
11 changed files with 222 additions and 95 deletions
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23
sql/field.cc
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@ -1968,7 +1968,7 @@ void Field::make_send_field(Send_field *field)
}
field->col_name= field_name;
field->length=field_length;
field->type=type();
field->set_handler(type_handler());
field->flags=table->maybe_null ? (flags & ~NOT_NULL_FLAG) : flags;
field->decimals= 0;
}
@ -8743,6 +8743,20 @@ uint Field_blob::is_equal(Create_field *new_field)
}
void Field_blob::make_send_field(Send_field *field)
{
/*
Historically all BLOB variant Fields are displayed as MYSQL_TYPE_BLOB
in the result set metadata. Note, Item can work differently and
display the exact BLOB type, such as
MYSQL_TYPE_{TINY_BLOB|BLOB|MEDIUM_BLOB|LONG_BLOB}.
QQ: this should be made consistent eventually.
*/
Field_longstr::make_send_field(field);
field->set_handler(&type_handler_blob);
}
int Field_blob_compressed::store(const char *from, size_t length,
CHARSET_INFO *cs)
{
@ -10915,6 +10929,13 @@ bool Column_definition::set_compressed(const char *method)
}
Send_field::Send_field(THD *thd, Item *item)
{
item->make_send_field(thd, this);
normalize();
}
/**
maximum possible display length for blob.