ACE_Command_Callback(3)

NAME

ACE_Command_Callback - Defines a class template that allows us to invoke a GOF command style callback to an object without knowing anything about the object except its type.

SYNOPSIS

#include <ace/Functor_T.h>
template<class RECEIVER, class ACTION>
class ACE_Command_Callback : public ACE_Command_Base
{
  public:
    ACE_Command_Callback (RECEIVER &recvr, ACTION action);
    virtual ~ACE_Command_Callback (void);
    virtual int execute (void *arg = 0);
  private:
    RECEIVER &receiver_;
    ACTION action_;
};

DESCRIPTION

Templatized classes for implementing function objects that are used in various places in ACE. There are currently two major categories of function objects in ACE: GOF Command Pattern objects, and STL-style functors for comparison of container elements. The command objects are invoked via an execute method, while the STL-style functors are invoked via an operator() method.

PUBLIC MEMBERS

ACE_Command_Callback (RECEIVER &recvr, ACTION action);

virtual ~ACE_Command_Callback (void);

virtual int execute (void *arg = 0);

PRIVATE MEMBERS

RECEIVER &receiver_;

ACTION action_;

AUTHOR

Chris Gill [email protected]

Based on Command Pattern implementations originally done by

Carlos O'Ryan [email protected], Douglas C. Schmidt [email protected], and Sergio Flores-Gaitan [email protected]

and on STL-style functor implementations originally done by

Irfan Pyarali [email protected]

LIBRARY

ace