migration

type AddColumn struct {
	Table  string
	Column Column
}

type AlterColumnUnique struct {
	Table  string
	Column string
	Unique bool
}

type Column struct {
	Name       string
	Type       string
	PrimaryKey bool
	Unique     bool
	Indexed    bool
	// References is the target table name for a foreign key column (from a
	// tango:"fk=X" tag), or "" for an ordinary column. The generated
	// constraint is always RESTRICT/NO ACTION: cascade delete is
	// implemented in application code by Store.Delete, never by the
	// database itself.
	References string
	// Default is a raw SQL literal (e.g. "TRUE") the column is given as a
	// NOT NULL DEFAULT when adding it to an existing table, so pre-existing
	// rows backfill to that value instead of NULL. Empty means no default:
	// the column is added exactly as before this field existed. There is no
	// struct-tag-driven way to set this — it is only ever hand-authored on a
	// specific generated migration where an existing model needs it.
	Default string
}

type ColumnState struct {
	Name       string
	Type       string
	PrimaryKey bool
	Unique     bool
	Indexed    bool
	References string
}

type CreateIndex struct {
	Table  string
	Column string
}

type CreateTable struct {
	Table   string
	Columns []Column
}

type DropColumn struct {
	Table  string
	Column string
}

type DropIndex struct {
	Table  string
	Column string
}

type DropTable struct {
	Table string
}

type Migration struct {
	App        string
	Name       string
	Up         []Step
	Down       []Step
	Reversible bool
}

type MigrationKey struct {
	App  string
	Name string
}

type Model struct {
	App     string
	Name    string
	Columns []Column
}

type SchemaState struct {
	Tables map[string]TableState
}

type Step interface {
	// contains filtered or unexported methods
}

type TableState struct {
	Name    string
	App     string
	Columns []ColumnState
}