service

var (
	ErrInvalidObjective = errors.New("invalid objective")
	ErrInvalidVerb      = errors.New("invalid verb")
	ErrNotImplemented   = errors.New("not implemented")
	ErrGetVertex        = errors.New("get vertex error")
	ErrGetEdge          = errors.New("get edge error")
	ErrPutVertex        = errors.New("put vertex error")
	ErrPutEdge          = errors.New("put edge error")
	ErrDeleteVertex     = errors.New("delete vertex error")
	ErrDeleteEdge       = errors.New("delete edge error")
	ErrAddEdge          = errors.New("add edge error")
	ErrAddDecayingEdge  = errors.New("add decaying-edge error")
	ErrScan             = errors.New("scan error")
	ErrCount            = errors.New("count error")
	ErrDeletePrefix     = errors.New("delete-prefix error")
	ErrKeys             = errors.New("keys error")
	ErrSearch           = errors.New("search error")
	ErrBFS              = errors.New("bfs error")
	ErrPagerank         = errors.New("pagerank error")
	ErrCommunity        = errors.New("community error")
	ErrHelp             = errors.New("help error")
	ErrConnection       = errors.New("connection error")
)