/**
* Metoda zwraca œrednia liczbê zebranch ankiet na dzieñ przez wybranego ankietera, licz¹ siê
* tylko te dni, wktórych pracowa³.
*
* @param surveys
* @param interviewer
* @param from
* @param to
* @return
*/
public float getMeanFilledSurveysOnADay(
List<Survey> surveys, Interviewer interviewer, GregorianCalendar from, GregorianCalendar to) {
float mean;
float days = numberOfDaysInWork(interviewer, from, to);
long numberOfSurveys = 0;
for (Survey survey : surveys) {
if (survey.getFinishTime().compareTo(from) >= 0
&& survey.getFinishTime().compareTo(to) <= 0) {
numberOfSurveys += 1;
}
}
mean = numberOfSurveys / days;
return mean;
}
/**
* Metoda zwraca liczbê wype³nionych ankiet.
*
* @param surveys
* @return
*/
public int getAmountOfFilledSurveys(List<Survey> surveys) {
int amount = 0;
if (surveys != null) {
for (Survey survey : surveys) {
if (survey.getFinishTime() != null) {
amount += 1;
}
}
return amount;
} else {
return 0;
}
}
/**
* Metoda zwraca œredni¹ liczbê zebranych ankiet przez ankietera na dzieñ w ci¹gu okresu, wktórym
* pracowa³
*
* @param surveys
* @param interviewer
* @return
*/
public float getMeanFilledSurveysOnADay(List<Survey> surveys, Interviewer interviewer) {
float mean;
float days = numberOfDaysInWork(interviewer);
long numberOfSurveys = 0;
if (surveys != null) {
for (Survey survey : surveys) {
if (survey.getFinishTime() != null) {
numberOfSurveys += 1;
}
}
mean = numberOfSurveys / days;
return mean;
} else {
return 0;
}
}
/**
* Metoda zwraca mapê, która zawiera jako klucze poszczególne dni w których ankieter zebra³ jakieœ
* ankiety, zaœ wartoœciami s¹ liczby zebranych ankiet w tym dniu.
*
* @param surveys
* @param interviewer
* @return
*/
public HashMap<GregorianCalendar, Integer> getAmountOfFilledSurveysInDays(
List<Survey> surveys, Interviewer interviewer) {
HashMap<GregorianCalendar, Integer> filledSurveysInDays =
new HashMap<GregorianCalendar, Integer>();
for (Survey survey : surveys) {
GregorianCalendar data = survey.getFinishTime();
int year = data.get(Calendar.YEAR);
int month = data.get(Calendar.MONTH);
int day = data.get(Calendar.DAY_OF_MONTH);
GregorianCalendar date = new GregorianCalendar(year, month, day);
if (!filledSurveysInDays.containsKey(date)) {
filledSurveysInDays.put(date, 1);
} else {
filledSurveysInDays.put(date, filledSurveysInDays.get(date) + 1);
}
}
return filledSurveysInDays;
}