[#MDEV-19686] Add method Type_handler::dyncol

[MDEV-19686] Add method Type_handler::dyncol_type Created: 2019-06-04 Updated: 2019-06-04 Resolved: 2019-06-04
Status:	Closed
Project:	MariaDB Server
Component/s:	Data types
Fix Version/s:	10.5.0

Type:

Task

Priority:

Major

Reporter:

Alexander Barkov

Assignee:

Alexander Barkov

Resolution:

Fixed

Votes:

Labels:

None

Issue Links:

Blocks
blocks	~~MDEV-4912~~	Data type plugin API version 1	Closed

Description

The code in Item_func_dyncol_create::prepare_arguments() is not friendly to data type plugins.

Let's add a new method in Type_handler:

virtual enum_dynamic_column_type

  dyncol_type(const Type_all_attributes *attr) const= 0;

and split the two switch'es into virtual implementations of the new method.

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