package metadata

// Column struct
type Column struct {
	Name         string `sql:"primary_key"`
	IsPrimaryKey bool
	IsNullable   bool
	IsGenerated  bool
	HasDefault   bool
	DataType     DataType
	Comment      string
}

// DataTypeKind is database type kind(base, enum, user-defined, array)
type DataTypeKind string

// DataTypeKind possible values
const (
	BaseType        DataTypeKind = "base"
	EnumType        DataTypeKind = "enum"
	UserDefinedType DataTypeKind = "user-defined"
	RangeType       DataTypeKind = "range"
)

// DataType contains information about column data type
type DataType struct {
	Name       string
	Kind       DataTypeKind
	IsUnsigned bool
	Dimensions int // The number of array dimensions
}

func (d DataType) IsArray() bool {
	return d.Dimensions > 0
}