A hard wired collection of predefined command handling patterns. More...

Description

A hard wired collection of predefined command handling patterns.

There is a small number of different possibilities to handle execution and UNDO of Steam-Layer commands. Each of these is defined as a subclass in this header and then hard wired into a small table. Handling patterns are stateless singleton objects, thus we build using multiple Singleton factory objects and configure them hard wired with the respective implementation classes. The index positions in this table match the sequence within the enum HandlingPattern::ID; all of this is done hard wired and without any dynamic configuration.

See also: SteamDispatcher; Session

Definition in file handling-patterns.hpp.

#include "lib/error.hpp"
#include "lib/multifact.hpp"
#include "steam/control/handling-pattern.hpp"
#include "steam/control/command-impl.hpp"

Namespaces
namespace	steam
	Steam-Layer implementation namespace root.

namespace	steam::control
	Steam-Layer dispatcher, controller and administrative facilities.

namespace	steam::control::anonymous_namespace{handling-patterns.hpp}

Typedefs
typedef lib::factory::MultiFact< HandlingPattern &, HandlingPattern::ID >	HandlingPatternFactory

Classes
class	BasicHandlingPattern
	Handling Pattern Foundation: invoke command directly and without any external intervention. More...

class	InvokeSyncNoThrow
	Handling Pattern: invoke blocking, translate exceptions into an error state. More...

class	InvokeSyncThrow
	Handling Pattern: invoke blocking, propagating any exceptions immediately. More...

class	InvokeAsync
	Handling Pattern: just schedule command to be invoked asynchronously. More...

Functions
HandlingPattern const &	getPatternInstance (HandlingPattern::ID id)
	access the singleton instance for a given ID

Variables
HandlingPatternFactory	patternTable
	holds singleton pattern instances by ID

HandlingPatternFactory::Singleton< InvokeSyncNoThrow >	holder1 (patternTable, HandlingPattern::SYNC)

HandlingPatternFactory::Singleton< InvokeSyncThrow >	holder2 (patternTable, HandlingPattern::SYNC_THROW)

HandlingPatternFactory::Singleton< InvokeAsync >	holder3 (patternTable, HandlingPattern::ASYNC)

HandlingPatternFactory::Singleton< BasicHandlingPattern >	holder4 (patternTable, HandlingPattern::DUMMY)

Description

Namespaces

Typedefs

Classes

Functions

Variables