libdb

type Closable interface {
	// Close the database
	Close()
}

type Database interface {
	ReadOnlyView
	WriterView

	// Return a subset of the database for usage
	Bucket(id []byte) Database

	// NextSequence returns the next natural sequence for insert-order-centric applications
	// Note this will cause implementations to lock while finding the natural sequence
	NextSequence() []byte

	// Convert view of current database or bucket into a read-only one.
	// This should not be considered a transaction, just special sauce.
	View(f ReadOnlyFunc) error

	// Obtain a read-write view of the database in a transaction
	Update(f WriterFunc) error

	// Close the database (might no-op)
	Close()
}

type DbForeachFunc func(key, val []byte) error

type GobDecoderLight struct {
	// contains filtered or unexported fields
}

type GobEncoderLight struct {
	// contains filtered or unexported fields
}

type ReadOnlyFunc func(view ReadOnlyView) error

type ReadOnlyView interface {
	// Get an object from storage
	GetObject(id []byte, o interface{}) error

	// Determine if an object with that ID exists already
	HasObject(id []byte) (bool, error)

	// Attempt to decode the input into the given output pointer
	Decode(input []byte, o interface{}) error

	// For every key value pair, run the given function
	ForEach(f DbForeachFunc) error
}

type WriterFunc func(db Database) error

type WriterView interface {

	// Delete an object from storage
	DeleteObject(id []byte) error

	// Put an object into storage (unique key)
	PutObject(id []byte, o interface{}) error
}