Examples with TeachingAssignment org.cpsolver.instructor.model.TeachingAssignment used on opensource projects

Example 11 with TeachingAssignment

use of org.cpsolver.instructor.model.TeachingAssignment in project cpsolver by UniTime.

the class SameLinkConstraint method getCurrentPreference.

/**
 * Current constraint preference (if soft)
 * @param assignment current assignment
 * @param value proposed change
 * @return change in the current preference value of this constraint
 */
public int getCurrentPreference(Assignment<TeachingRequest.Variable, TeachingAssignment> assignment, TeachingAssignment value) {
    // no preference
    if (isHard())
        return 0;
    TeachingAssignment current = assignment.getValue(value.variable());
    if (current != null && current.getInstructor().equals(value.getInstructor()))
        return 0;
    int ret = 0;
    if (getPreference() < 0) {
        // preferred
        for (TeachingAssignment other : value.getInstructor().getContext(assignment).getAssignments()) {
            if (!variables().equals(value.variable()) && !variables().contains(other.variable())) {
                ret++;
            }
        }
        if (current != null) {
            for (TeachingAssignment other : current.getInstructor().getContext(assignment).getAssignments()) {
                if (!variables().equals(value.variable()) && !variables().contains(other.variable())) {
                    ret--;
                }
            }
        }
    } else if (getPreference() > 0) {
        for (TeachingAssignment other : value.getInstructor().getContext(assignment).getAssignments()) {
            if (!variables().equals(value.variable()) && variables().contains(other.variable()))
                ret++;
        }
        if (current != null) {
            for (TeachingAssignment other : current.getInstructor().getContext(assignment).getAssignments()) {
                if (!variables().equals(value.variable()) && variables().contains(other.variable())) {
                    ret--;
                }
            }
        }
    }
    return ret;
}