viewdeps

type Definition struct {
	View
	// SQL is the view body from pg_get_viewdef. Note this is the *expanded*
	// definition: a view written as "SELECT a.*" comes back with every column
	// listed, so restoring after a column was dropped fails loudly rather than
	// silently changing the view's shape.
	SQL string
	// Indexes are complete CREATE INDEX statements. Materialized views only —
	// and load-bearing, since REFRESH ... CONCURRENTLY requires a unique index.
	Indexes []string
	Owner   string
	Comment string
	Grants  []string
}

type DropOptions struct {
	// Tables whose dependent views block the pending DDL. Empty is a no-op.
	Tables []Table
	// Query reads the dependency graph. Required.
	Query Querier
	// Exec runs each DROP and each restore statement. Required.
	Exec Exec
	// Owned reports whether the caller recreates this view itself. Owned views
	// are dropped and left to the caller — restoring them from the captured
	// definition would resurrect a stale one. Unowned views are captured before
	// the drop and rebuilt by the returned restore func. Nil owns nothing.
	Owned func(View) bool
	// Logf, when set, receives one line per dropped view.
	Logf func(format string, args ...any)
}

type Exec func(ctx context.Context, stmt string) error

type Querier interface {
	QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error)
}

type RestoreError struct {
	View       View
	Statements []string
	Err        error
}

type Table struct {
	Schema string
	Name   string
}

type View struct {
	Schema string
	Name   string
	Kind   string
}