Type conversion between custom type and ARRAY

[mookjp]

Hi, I'd like to generate code with ARRAY(INT64) with custom types.

If I write DDL and custom types configuration like this:

# sql
CREATE TABLE Items (
  Codes ARRAY<INT64> NOT NULL,
// ...

# custom_column_types.yml
tables:
  - name: Items
    columns:
      Codes: Codes
// or might be
//    Codes: "[]Code"

// type.go

type Codes []Code
type Code int64

const (
  CodeOK Code = 1
  CodeNG Code = 2
)

I want to generate code with conversion between the type (e,g, INT64) and custom type (e.g. Code) if it is an array.
The default template shows it has condition to check Field has CustomType or not so that it generates type conversion code.
It would be helpful to have the method to know the field type is ARRAY or not in this case, but do you have any idea or suggestion for this?

// type.go.tpl

	{{- range .Fields }}
		{{- if .CustomType.IsArray }}
			// type conversion code for array type
		{{- end }}
	{{- end }}

[yuriechan]

One of the work around would be to use golang alias type.

Instead of,

// type.go

type Code int64

const (
  CodeOK Code = 1
  CodeNG Code = 2
)

use golang alias

// type.go

type Code = int64

const (
  CodeOK Code = 1
  CodeNG Code = 2
)

then, your custom_column_types.yml would look like,

# custom_column_types.yml
tables:
  - name: Items
    columns:
      Codes: "[]Code"