net.sf.cpsolver.ifs.example.tt
Class Resource

java.lang.Object
  net.sf.cpsolver.ifs.model.Constraint
      net.sf.cpsolver.ifs.example.tt.Resource

public class Resource
extends Constraint

Resource constraint

Version:

IFS 1.1 (Iterative Forward Search)
Copyright (C) 2006 Tomáš Müller
muller@unitime.org
Lazenska 391, 76314 Zlin, Czech Republic

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Field Summary

static int	TYPE_CLASS
static int	TYPE_INSTRUCTOR
static int	TYPE_OTHER
static int	TYPE_ROOM

Fields inherited from class net.sf.cpsolver.ifs.model.Constraint

iAssignedVariables, iConstraintListeners, iId

Constructor Summary

Resource(String id, int type, String name)

Method Summary

void	addDiscouragedSlot(int slot)
void	addDiscouragedSlot(int day, int hour)
void	addProhibitedSlot(int slot)
void	addProhibitedSlot(int day, int hour)
void	assigned(long iteration, Value value) Given value is to be assigned to its varable.
void	computeConflicts(Value value, Set conflicts) The only method which has to be implemented by any constraint.
Set	getDiscouragedSlots()
String	getName() Constraint's name -- for printing purposes
Set	getProhibitedSlots()
String	getResourceId()
int	getType()
boolean	inConflict(Value value) Returns true if the given assignment is inconsistent with the existing assignments respecting this constraint.
boolean	isConsistent(Value value1, Value value2) Returns true if the given assignments are consistent respecting this constraint.
boolean	isDiscouragedSlot(int slot)
boolean	isDiscouragedSlot(int day, int hour)
boolean	isProhibited(int day, int hour, int length)
boolean	isProhibitedSlot(int slot)
boolean	isProhibitedSlot(int day, int hour)
void	setModel(Model model) Sets the model which the constraint belongs to
void	unassigned(long iteration, Value value) Given value is unassigned from its varable.

Methods inherited from class net.sf.cpsolver.ifs.model.Constraint

addConstraintListener, addVariable, assignedVariables, constraintListeners, countAssignedVariables, countVariables, equals, getDescription, getId, getModel, hashCode, isHard, removeConstraintListener, removeVariable, variables

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

TYPE_ROOM

public static final int TYPE_ROOM

See Also:

Constant Field Values

TYPE_INSTRUCTOR

public static final int TYPE_INSTRUCTOR

See Also:

Constant Field Values

TYPE_CLASS

public static final int TYPE_CLASS

See Also:

Constant Field Values

TYPE_OTHER

public static final int TYPE_OTHER

See Also:

Constant Field Values

Constructor Detail

Resource

public Resource(String id,
                int type,
                String name)

Method Detail

setModel

public void setModel(Model model)

Description copied from class: Constraint

Sets the model which the constraint belongs to

Overrides:

setModel in class Constraint

getResourceId

public String getResourceId()

getName

public String getName()

Description copied from class: Constraint

Constraint's name -- for printing purposes

Overrides:

getName in class Constraint

getType

public int getType()

getProhibitedSlots

public Set getProhibitedSlots()

getDiscouragedSlots

public Set getDiscouragedSlots()

addProhibitedSlot

public void addProhibitedSlot(int day,
                              int hour)

addDiscouragedSlot

public void addDiscouragedSlot(int day,
                               int hour)

isProhibitedSlot

public boolean isProhibitedSlot(int day,
                                int hour)

isDiscouragedSlot

public boolean isDiscouragedSlot(int day,
                                 int hour)

addProhibitedSlot

public void addProhibitedSlot(int slot)

addDiscouragedSlot

public void addDiscouragedSlot(int slot)

isProhibitedSlot

public boolean isProhibitedSlot(int slot)

isDiscouragedSlot

public boolean isDiscouragedSlot(int slot)

isProhibited

public boolean isProhibited(int day,
                            int hour,
                            int length)

computeConflicts

public void computeConflicts(Value value,
                             Set conflicts)

Description copied from class: Constraint

The only method which has to be implemented by any constraint. It returns the values which needs to be unassigned in order to make this constraint consistent with the given value if it is assigned to its variable. The computed list of conflicting values is added to the given set of conflicts.

Specified by:

computeConflicts in class Constraint

Parameters:

value - value to be assigned to its varaible

conflicts - resultant set of conflicting values

inConflict

public boolean inConflict(Value value)

Description copied from class: Constraint

Returns true if the given assignment is inconsistent with the existing assignments respecting this constraint. This method is used by MAC (see MacPropagation).

Overrides:

inConflict in class Constraint

isConsistent

public boolean isConsistent(Value value1,
                            Value value2)

Description copied from class: Constraint

Returns true if the given assignments are consistent respecting this constraint. This method is used by MAC (see MacPropagation).

Overrides:

isConsistent in class Constraint

assigned

public void assigned(long iteration,
                     Value value)

Description copied from class: Constraint

Given value is to be assigned to its varable. In this method, the constraint should unassigns all varaibles which are in conflict with the given assignment because of this constraint.

Overrides:

assigned in class Constraint

unassigned

public void unassigned(long iteration,
                       Value value)

Description copied from class: Constraint

Given value is unassigned from its varable.

Overrides:

unassigned in class Constraint