scip::ObjPricer Class Reference

Detailed Description

C++ wrapper for variable pricer.

This class defines the interface for variable pricer implemented in C++. Note that there is a pure virtual function (this function has to be implemented). This function is: scip_redcost().

• Instructions for implementing a variable pricer
• Corresponding C interface

Definition at line 42 of file objpricer.h.

#include <objpricer.h>

Public Member Functions
	ObjPricer (SCIP *scip, const char *name, const char *desc, int priority, SCIP_Bool delay)
virtual	~ObjPricer ()
virtual	SCIP_DECL_PRICERFREE (scip_free)
virtual	SCIP_DECL_PRICERINIT (scip_init)
virtual	SCIP_DECL_PRICEREXIT (scip_exit)
virtual	SCIP_DECL_PRICERINITSOL (scip_initsol)
virtual	SCIP_DECL_PRICEREXITSOL (scip_exitsol)
virtual	SCIP_DECL_PRICERREDCOST (scip_redcost)=0
virtual	SCIP_DECL_PRICERFARKAS (scip_farkas)
Public Member Functions inherited from scip::ObjProbCloneable
virtual	~ObjProbCloneable ()
virtual	SCIP_DECL_OBJPROBCLONE (ObjProbCloneable *clone)
virtual	SCIP_DECL_OBJPROBISCLONEABLE (iscloneable)

Data Fields
SCIP *	scip_
char *	scip_name_
char *	scip_desc_
const int	scip_priority_
const SCIP_Bool	scip_delay_

Constructor & Destructor Documentation

scip::ObjPricer::ObjPricer ( SCIP *  scip, const char *  name, const char *  desc, int  priority, SCIP_Bool  delay  )

inline

default constructor

Parameters

scip	SCIP data structure
name	name of variable pricer
desc	description of variable pricer
priority	priority of the variable pricer
delay	should the pricer be delayed until no other pricers or already existing problem variables with negative reduced costs are found? if this is set to FALSE it may happen that the pricer produces columns that already exist in the problem (which are also priced in by the default problem variable pricing in the same round)

Definition at line 65 of file objpricer.h.

References SCIP_CALL_ABORT, and SCIPduplicateMemoryArray.

virtual scip::ObjPricer::~ObjPricer ( )

inlinevirtual

destructor

Definition at line 89 of file objpricer.h.

References SCIPfreeMemoryArray.

Member Function Documentation

virtual scip::ObjPricer::SCIP_DECL_PRICERFREE ( scip_free  )

inlinevirtual

destructor of variable pricer to free user data (called when SCIP is exiting)

See also

SCIP_DECL_PRICERFREE(x) in type_pricer.h

Definition at line 101 of file objpricer.h.

References SCIP_OKAY.

virtual scip::ObjPricer::SCIP_DECL_PRICERINIT ( scip_init  )

inlinevirtual

initialization method of variable pricer (called after problem was transformed)

See also

SCIP_DECL_PRICERINIT(x) in type_pricer.h

Definition at line 110 of file objpricer.h.

References SCIP_OKAY.

virtual scip::ObjPricer::SCIP_DECL_PRICEREXIT ( scip_exit  )

inlinevirtual

deinitialization method of variable pricer (called before transformed problem is freed)

See also

SCIP_DECL_PRICEREXIT(x) in type_pricer.h

Definition at line 119 of file objpricer.h.

References SCIP_OKAY.

virtual scip::ObjPricer::SCIP_DECL_PRICERINITSOL ( scip_initsol  )

inlinevirtual

solving process initialization method of variable pricer (called when branch and bound process is about to begin)

See also

SCIP_DECL_PRICERINITSOL(x) in type_pricer.h

Definition at line 128 of file objpricer.h.

References SCIP_OKAY.

virtual scip::ObjPricer::SCIP_DECL_PRICEREXITSOL ( scip_exitsol  )

inlinevirtual

solving process deinitialization method of variable pricer (called before branch and bound process data is freed)

See also

SCIP_DECL_PRICEREXITSOL(x) in type_pricer.h

Definition at line 137 of file objpricer.h.

References SCIP_DECL_PRICERREDCOST(), and SCIP_OKAY.

virtual scip::ObjPricer::SCIP_DECL_PRICERREDCOST ( scip_redcost  )

pure virtual

reduced cost pricing method of variable pricer for feasible LPs

See also

SCIP_DECL_PRICERREDCOST(x) in type_pricer.h

Referenced by SCIP_DECL_PRICEREXITSOL().

virtual scip::ObjPricer::SCIP_DECL_PRICERFARKAS ( scip_farkas  )

inlinevirtual

farkas pricing method of variable pricer for infeasible LPs

See also

SCIP_DECL_PRICERFARKAS(x) in type_pricer.h

Definition at line 152 of file objpricer.h.

References SCIP_Bool, SCIP_OKAY, SCIPfindObjPricer(), SCIPgetObjPricer(), and SCIPincludeObjPricer().

Field Documentation

SCIP* scip::ObjPricer::scip_

SCIP data structure

Definition at line 48 of file objpricer.h.

char* scip::ObjPricer::scip_name_

name of the variable pricer

Definition at line 51 of file objpricer.h.

char* scip::ObjPricer::scip_desc_

description of the variable pricer

Definition at line 54 of file objpricer.h.

const int scip::ObjPricer::scip_priority_

default priority of the variable pricer

Definition at line 57 of file objpricer.h.

const SCIP_Bool scip::ObjPricer::scip_delay_

should the pricer be delayed until no other pricers or already existing problem variables with negative reduced costs are found?

Definition at line 62 of file objpricer.h.