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Akumuli::QP::SpaceSaver< weighted > Struct Template Reference
Inheritance diagram for Akumuli::QP::SpaceSaver< weighted >:


struct  Item

Public Member Functions

 SpaceSaver (double error, double portion, std::shared_ptr< Node > next)
 SpaceSaver (boost::property_tree::ptree const &ptree, std::shared_ptr< Node > next)
bool count ()
virtual void complete ()
 Complete adding values.
virtual bool put (const aku_Sample &sample)
virtual void set_error (aku_Status status)
virtual int get_requirements () const

Public Attributes

std::shared_ptr< Nodenext_
< aku_ParamId, Item
double N
size_t M
double P

Additional Inherited Members

- Public Types inherited from Akumuli::QP::Node
enum  QueryFlags { EMPTY = 0, GROUP_BY_REQUIRED = 1, TERMINAL = 2 }

Constructor & Destructor Documentation

template<bool weighted>
Akumuli::QP::SpaceSaver< weighted >::SpaceSaver ( double  error,
double  portion,
std::shared_ptr< Node next 


erroris a allowed error value between 0 and 1
portionis a frequency (or weight) portion that we interested in Object should report all items wich frequencies is greater then (portion-error)*N where N is a number of elements (or total weight of all items in a stream).

Member Function Documentation

template<bool weighted>
virtual int Akumuli::QP::SpaceSaver< weighted >::get_requirements ( ) const

This method returns set of flags that describes its functioning.

Implements Akumuli::QP::Node.

template<bool weighted>
virtual bool Akumuli::QP::SpaceSaver< weighted >::put ( const aku_Sample &  sample)

Process value, return false to interrupt process. Empty sample can be sent to flush all updates.

Implements Akumuli::QP::Node.

The documentation for this struct was generated from the following file: