41 lines
899 B
Java
41 lines
899 B
Java
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package grading;
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import java.util.List;
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/**
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* An implementation GradingStrategy that simply totals the scores for all grades.
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*/
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public class TotalStrategy implements GradingStrategy
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{
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/**
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* Creates a new instance of TotalStrategy.
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*/
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public TotalStrategy()
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{
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}
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/**
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* @param key
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* The key of the final totaled grade
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* @param grades
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* The list of grades to calculate the final total grade from
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* @return A new grade representing the total of grades
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*/
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public Grade calculate(final String key, final List<Grade> grades) throws SizeException
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{
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if (grades == null || grades.isEmpty())
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{
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throw new SizeException();
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}
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Double total = 0.0;
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for (Grade grade : grades)
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{
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total += Missing.doubleValue(grade.getValue());
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}
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return new LeafGrade(key, total);
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}
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}
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