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fet  5.18.0
Public Member Functions | Public Attributes
ConstraintStudentsMaxGapsPerDay Class Reference

#include <timeconstraint.h>

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List of all members.

Public Member Functions

 ConstraintStudentsMaxGapsPerDay ()
 ConstraintStudentsMaxGapsPerDay (double wp, int mg)
bool computeInternalStructure (QWidget *parent, Rules &r)
 Computes the internal structure for this constraint.
bool hasInactiveActivities (Rules &r)
QString getXmlDescription (Rules &r)
 Returns an XML description of this constraint.
QString getDescription (Rules &r)
 Returns a small description string for this constraint.
QString getDetailedDescription (Rules &r)
 Returns a detailed description string for this constraint.
double fitness (Solution &c, Rules &r, QList< double > &cl, QList< QString > &dl, QString *conflictsString=NULL)
 The function that calculates the fitness of a solution, according to this constraint.
bool isRelatedToActivity (Rules &r, Activity *a)
 Returns true if this constraint is related to this activity.
bool isRelatedToTeacher (Teacher *t)
 Returns true if this constraint is related to this teacher.
bool isRelatedToSubject (Subject *s)
 Returns true if this constraint is related to this subject.
bool isRelatedToActivityTag (ActivityTag *s)
 Returns true if this constraint is related to this activity tag.
bool isRelatedToStudentsSet (Rules &r, StudentsSet *s)
 Returns true if this constraint is related to this students set.
bool hasWrongDayOrHour (Rules &r)
bool canRepairWrongDayOrHour (Rules &r)
bool repairWrongDayOrHour (Rules &r)

Public Attributes

int maxGaps
double weightPercentage
 The percentage weight of this constraint, 100% compulsory, 0% non-compulsory.
bool active
QString comments
int type
 Specifies the type of this constraint (using the above constants).

Detailed Description

Definition at line 3498 of file timeconstraint.h.


Constructor & Destructor Documentation

Definition at line 16818 of file timeconstraint.cpp.


Member Function Documentation

Implements TimeConstraint.

Definition at line 17008 of file timeconstraint.cpp.

{
       assert(hasWrongDayOrHour(r));
       
       return true;
}

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bool ConstraintStudentsMaxGapsPerDay::computeInternalStructure ( QWidget *  parent,
Rules r 
) [virtual]

Computes the internal structure for this constraint.

It returns false if the constraint is an activity related one and it depends on only inactive activities.

Implements TimeConstraint.

Definition at line 16825 of file timeconstraint.cpp.

{
       Q_UNUSED(parent);
       Q_UNUSED(r);

       return true;
}
double ConstraintStudentsMaxGapsPerDay::fitness ( Solution c,
Rules r,
QList< double > &  cl,
QList< QString > &  dl,
QString *  conflictsString = NULL 
) [virtual]

The function that calculates the fitness of a solution, according to this constraint.

We need the rules to compute this fitness factor. If conflictsString!=NULL, it will be initialized with a text explaining where this restriction is broken.

Implements TimeConstraint.

Definition at line 16896 of file timeconstraint.cpp.

{
       //returns a number equal to the number of gaps of the subgroups (in hours)

       //if the matrices subgroupsMatrix and teachersMatrix are already calculated, do not calculate them again!
       if(!c.teachersMatrixReady || !c.subgroupsMatrixReady){
              c.teachersMatrixReady=true;
              c.subgroupsMatrixReady=true;
              subgroups_conflicts = c.getSubgroupsMatrix(r, subgroupsMatrix);
              teachers_conflicts = c.getTeachersMatrix(r, teachersMatrix);

              c.changedForMatrixCalculation=false;
       }
       
       int nGaps;
       int tmp;
       int i;
       
       int tIllegalGaps=0;

       for(i=0; i<r.nInternalSubgroups; i++){
              for(int j=0; j<r.nDaysPerWeek; j++){
                     nGaps=0;
       
                     int k;
                     tmp=0;
                     for(k=0; k<r.nHoursPerDay; k++)
                            if(subgroupsMatrix[i][j][k]>0){
                                   assert(!breakDayHour[j][k] && !subgroupNotAvailableDayHour[i][j][k]);
                                   break;
                            }
                     for(; k<r.nHoursPerDay; k++) if(!breakDayHour[j][k] && !subgroupNotAvailableDayHour[i][j][k]){
                            if(subgroupsMatrix[i][j][k]>0){
                                   nGaps+=tmp;
                                   tmp=0;
                            }
                            else
                                   tmp++;
                     }
              
                     int illegalGaps=nGaps-this->maxGaps;
                     if(illegalGaps<0)
                            illegalGaps=0;

                     if(illegalGaps>0 && conflictsString!=NULL){
                            QString s=tr("Time constraint students max gaps per day broken for subgroup: %1, it has %2 extra gaps, on day %3, conflicts increase=%4")
                             .arg(r.internalSubgroupsList[i]->name)
                             .arg(illegalGaps)
                             .arg(r.daysOfTheWeek[j])
                             .arg(CustomFETString::number(illegalGaps*weightPercentage/100));
                                                  
                            dl.append(s);
                            cl.append(illegalGaps*weightPercentage/100);
                                   
                            *conflictsString+= s+"\n";
                     }
              
                     tIllegalGaps+=illegalGaps;
              }
       }
              
       if(c.nPlacedActivities==r.nInternalActivities)
              if(weightPercentage==100)    //for partial solutions it might be broken
                     assert(tIllegalGaps==0);
       return weightPercentage/100 * tIllegalGaps;
}

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Returns a small description string for this constraint.

Implements TimeConstraint.

Definition at line 16852 of file timeconstraint.cpp.

{
       Q_UNUSED(r);

       QString begin=QString("");
       if(!active)
              begin="X - ";
              
       QString end=QString("");
       if(!comments.isEmpty())
              end=", "+tr("C: %1", "Comments").arg(comments);
              
       QString s;
       s+="! ";
       s+=tr("Students max gaps per day");s+=", ";
       s+=tr("WP:%1\%", "Weight percentage").arg(CustomFETString::number(this->weightPercentage));s+=", ";
       s+=tr("MG:%1", "Max gaps (per day)").arg(this->maxGaps);

       return begin+s+end;
}

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Returns a detailed description string for this constraint.

Implements TimeConstraint.

Definition at line 16873 of file timeconstraint.cpp.

{
       Q_UNUSED(r);

       QString s=tr("Time constraint");s+="\n";
       s+=tr("(not perfect)", "It refers to a not perfect constraint"); s+="\n";
       s+=tr("All students must respect the maximum number of gaps per day");s+="\n";
       s+=tr("(breaks and students set not available not counted)");s+="\n";
       s+=tr("Weight (percentage)=%1\%").arg(CustomFETString::number(this->weightPercentage));s+="\n";
       s+=tr("Maximum gaps per day=%1").arg(this->maxGaps);s+="\n";

       if(!active){
              s+=tr("Active=%1", "Refers to a constraint").arg(yesNoTranslated(active));
              s+="\n";
       }
       if(!comments.isEmpty()){
              s+=tr("Comments=%1").arg(comments);
              s+="\n";
       }

       return s;
}

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Returns an XML description of this constraint.

Implements TimeConstraint.

Definition at line 16839 of file timeconstraint.cpp.

{
       Q_UNUSED(r);

       QString s="<ConstraintStudentsMaxGapsPerDay>\n";
       s+="   <Weight_Percentage>"+CustomFETString::number(this->weightPercentage)+"</Weight_Percentage>\n";
       s+="   <Max_Gaps>"+CustomFETString::number(this->maxGaps)+"</Max_Gaps>\n";
       s+="   <Active>"+trueFalse(active)+"</Active>\n";
       s+="   <Comments>"+protect(comments)+"</Comments>\n";
       s+="</ConstraintStudentsMaxGapsPerDay>\n";
       return s;
}

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Implements TimeConstraint.

Definition at line 16833 of file timeconstraint.cpp.

{
       Q_UNUSED(r);
       return false;
}

Implements TimeConstraint.

Definition at line 17000 of file timeconstraint.cpp.

{
       if(maxGaps>r.nHoursPerDay)
              return true;
       
       return false;
}

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Returns true if this constraint is related to this activity.

Implements TimeConstraint.

Definition at line 16963 of file timeconstraint.cpp.

{
       Q_UNUSED(r);
       Q_UNUSED(a);

       return false;
}

Returns true if this constraint is related to this activity tag.

Implements TimeConstraint.

Definition at line 16985 of file timeconstraint.cpp.

{
       Q_UNUSED(s);

       return false;
}

Returns true if this constraint is related to this students set.

Implements TimeConstraint.

Definition at line 16992 of file timeconstraint.cpp.

{
       Q_UNUSED(r);
       Q_UNUSED(s);

       return true;
}

Returns true if this constraint is related to this subject.

Implements TimeConstraint.

Definition at line 16978 of file timeconstraint.cpp.

{
       Q_UNUSED(s);

       return false;
}

Returns true if this constraint is related to this teacher.

Implements TimeConstraint.

Definition at line 16971 of file timeconstraint.cpp.

{
       Q_UNUSED(t);

       return false;
}

Implements TimeConstraint.

Definition at line 17015 of file timeconstraint.cpp.

{
       assert(hasWrongDayOrHour(r));
       
       if(maxGaps>r.nHoursPerDay)
              maxGaps=r.nHoursPerDay;

       return true;
}

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Member Data Documentation

bool TimeConstraint::active [inherited]

Definition at line 146 of file timeconstraint.h.

QString TimeConstraint::comments [inherited]

Definition at line 148 of file timeconstraint.h.

Definition at line 3502 of file timeconstraint.h.

int TimeConstraint::type [inherited]

Specifies the type of this constraint (using the above constants).

Definition at line 153 of file timeconstraint.h.

The percentage weight of this constraint, 100% compulsory, 0% non-compulsory.

Definition at line 144 of file timeconstraint.h.


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