CbcEventHandler Class Reference

Base class for Cbc event handling. More...

#include <CbcEventHandler.hpp>

Collaboration diagram for CbcEventHandler:

[legend]List of all members.

Public Types
typedef std::map< CbcEvent, CbcAction >	eaMapPair
	Data type for event/action pairs.
	node = 200
	treeStatus
	solution
	heuristicSolution
	noAction = -1
	stop = 0
	restart
	restartRoot
enum	CbcEvent { node = 200, treeStatus, solution, heuristicSolution }
	Events known to cbc. More...
enum	CbcAction { noAction = -1, stop = 0, restart, restartRoot }
	Action codes returned by the event handler. More...
Public Member Functions
Event Processing
virtual CbcAction	event (CbcEvent whichEvent)
	Return the action to be taken for an event.
Constructors and destructors
	CbcEventHandler (const CbcModel *model=NULL)
	Default constructor.
	CbcEventHandler (const CbcEventHandler &orig)
	Copy constructor.
CbcEventHandler &	operator= (const CbcEventHandler &rhs)
	Assignment.
virtual CbcEventHandler *	clone () const
	Clone (virtual) constructor.
virtual	~CbcEventHandler ()
	Destructor.
Set/Get methods
void	setModel (CbcModel *model)
	Set model.
const CbcModel *	getModel () const
	Get model.
void	setDfltAction (CbcAction action)
	Set the default action.
void	setAction (CbcEvent event, CbcAction action)
	Set the action code associated with an event.
Protected Attributes
Data members
Protected (as opposed to private) to allow access by derived classes.
const CbcModel *	model_
	Pointer to associated CbcModel.
CbcAction	dfltAction_
	Default action.
eaMapPair *	eaMap_
	Pointer to a map that holds non-default event/action pairs.

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Detailed Description

Base class for Cbc event handling.

Up front: We're not talking about unanticipated events here. We're talking about anticipated events, in the sense that the code is going to make a call to event() and is prepared to obey the return value that it receives.

The general pattern for usage is as follows:

1. Create a CbcEventHandler object. This will be initialised with a set of default actions for every recognised event.

2. Attach the event handler to the CbcModel object.

3. When execution reaches the point where an event occurs, call the event handler as CbcEventHandler::event(the event). The return value will specify what the code should do in response to the event.

The return value associated with an event can be changed at any time.

Definition at line 77 of file CbcEventHandler.hpp.

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Member Typedef Documentation

typedef std::map<CbcEvent,CbcAction> CbcEventHandler::eaMapPair

Data type for event/action pairs.

Definition at line 115 of file CbcEventHandler.hpp.

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Member Enumeration Documentation

enum CbcEventHandler::CbcEvent

Events known to cbc.

Enumerator:

node	Processing of the current node is complete.
treeStatus	A tree status interval has arrived.
solution	A solution has been found.
heuristicSolution	A heuristic solution has been found.

Definition at line 84 of file CbcEventHandler.hpp.

enum CbcEventHandler::CbcAction

Action codes returned by the event handler.

Specific values are chosen to match ClpEventHandler return codes.

Enumerator:

noAction	Continue --- no action required.
stop	Stop --- abort the current run at the next opportunity.
restart	Restart --- restart branch-and-cut search; do not undo root node processing.
restartRoot	RestartRoot --- undo root node and start branch-and-cut afresh.

Definition at line 100 of file CbcEventHandler.hpp.

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Constructor & Destructor Documentation

CbcEventHandler::CbcEventHandler

(

const CbcModel *

model = NULL

)

Default constructor.

CbcEventHandler::CbcEventHandler

(

const CbcEventHandler &

orig

)

Copy constructor.

virtual CbcEventHandler::~CbcEventHandler

(

)

[virtual]

Destructor.

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Member Function Documentation

virtual CbcAction CbcEventHandler::event

(

CbcEvent

whichEvent

)

[virtual]

Return the action to be taken for an event.

Return the action that should be taken in response to the event passed as the parameter. The default implementation simply reads a return code from a map.

CbcEventHandler& CbcEventHandler::operator=

(

const CbcEventHandler &

rhs

)

Assignment.

virtual CbcEventHandler* CbcEventHandler::clone

(

)

const [virtual]

Clone (virtual) constructor.

void CbcEventHandler::setModel

(

CbcModel *

model

)

[inline]

Set model.

Definition at line 162 of file CbcEventHandler.hpp.

References model_.

const CbcModel* CbcEventHandler::getModel

(

)

const [inline]

Get model.

Definition at line 167 of file CbcEventHandler.hpp.

References model_.

void CbcEventHandler::setDfltAction

(

CbcAction

action

)

[inline]

Set the default action.

Definition at line 172 of file CbcEventHandler.hpp.

References dfltAction_.

void CbcEventHandler::setAction	(	CbcEvent	event,
		CbcAction	action
	)			[inline]

Set the action code associated with an event.

Definition at line 177 of file CbcEventHandler.hpp.

References eaMap_.

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Member Data Documentation

const CbcModel* CbcEventHandler::model_ [protected]

Pointer to associated CbcModel.

Definition at line 195 of file CbcEventHandler.hpp.

Referenced by getModel(), and setModel().

CbcAction CbcEventHandler::dfltAction_ [protected]

Default action.

Definition at line 199 of file CbcEventHandler.hpp.

Referenced by setDfltAction().

eaMapPair* CbcEventHandler::eaMap_ [protected]

Pointer to a map that holds non-default event/action pairs.

Definition at line 203 of file CbcEventHandler.hpp.

Referenced by setAction().

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

• /home/coin/SVN-release/CoinAll-1.1.0/Cbc/src/CbcEventHandler.hpp

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