org.cpsolver.instructor.constraints

## Class InstructorConstraint

- java.lang.Object
- - org.cpsolver.ifs.model.Constraint<V,T>
  - - org.cpsolver.ifs.model.GlobalConstraint<TeachingRequest.Variable,TeachingAssignment>
    - - org.cpsolver.instructor.constraints.InstructorConstraint

- All Implemented Interfaces:
    Comparable<Constraint<TeachingRequest.Variable,TeachingAssignment>>

      public class InstructorConstraint
      extends GlobalConstraint<TeachingRequest.Variable,TeachingAssignment>

  Instructor Constraint. This is the main constraint of the problem, ensuring that an instructor gets a consistent list of assignments. It checks for instructor availability, maximal load, time conflicts, and whether the given assignments are of the same course (if desired).
  Version:
    IFS 1.3 (Instructor Sectioning)
    Copyright (C) 2016 Tomáš Müller
    muller@unitime.org
    http://muller.unitime.org
    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 3 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 see http://www.gnu.org/licenses/.
  Author:
    Tomáš Müller

- - ### Field Summary

    - ### Fields inherited from class org.cpsolver.ifs.model.Constraint

      `iConstraintListeners, iId`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `InstructorConstraint()` Constructor

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `computeConflicts(Assignment<TeachingRequest.Variable,TeachingAssignment> assignment, TeachingAssignment value, Set<TeachingAssignment> conflicts)` The only method which has to be implemented by any constraint.
    `String` | `getName()` Constraint's name -- for printing purposes
    `String` | `toString()`

    - ### Methods inherited from class org.cpsolver.ifs.model.GlobalConstraint

      `addVariable, assigned, assignedVariables, countAssignedVariables, removeVariable, unassigned, variables`

    - ### Methods inherited from class org.cpsolver.ifs.model.Constraint

      `addConstraintListener, compareTo, computeConflictsNoForwardCheck, constraintListeners, countVariables, equals, getDescription, getId, getModel, hashCode, inConflict, isConsistent, isHard, removeConstraintListener, setModel`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### InstructorConstraint

          public InstructorConstraint()

      Constructor

  - ### Method Detail

    - #### computeConflicts

          public void computeConflicts(Assignment<TeachingRequest.Variable,TeachingAssignment> assignment,
                                       TeachingAssignment value,
                                       Set<TeachingAssignment> 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<TeachingRequest.Variable,TeachingAssignment>`
      Parameters:
        `assignment` - current assignment
        `value` - value to be assigned to its variable
        `conflicts` - resultant set of conflicting values

    - #### getName

          public String getName()

      Description copied from class: `Constraint`
      Constraint's name -- for printing purposes
      Overrides:
        `getName` in class `GlobalConstraint<TeachingRequest.Variable,TeachingAssignment>`
      Returns:
        constraint name

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `GlobalConstraint<TeachingRequest.Variable,TeachingAssignment>`