[1030] | 1 | package de.ugoe.cs.autoquest.usability.evaluation.rule.evaluator;
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| 2 |
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| 3 | import static de.ugoe.cs.autoquest.usability.tasktree.filter.EventTypeFilter.TEXT_INPUT;
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| 4 |
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| 5 | import com.google.common.base.Optional;
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| 6 | import com.google.common.base.Predicate;
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| 7 | import com.google.common.collect.Iterables;
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| 8 |
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| 9 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTree;
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| 10 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode;
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| 11 | import de.ugoe.cs.autoquest.usability.evaluation.result.UsabilityDefectSeverityLevel;
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| 12 | import de.ugoe.cs.autoquest.usability.evaluation.rule.set.UsabilityRule;
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| 13 | import de.ugoe.cs.autoquest.usability.tasktree.filter.FilterStatistic;
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| 14 | import de.ugoe.cs.autoquest.usability.tasktree.filter.IterativeDFSFilterStrategy;
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| 15 | import de.ugoe.cs.autoquest.usability.tasktree.filter.TaskTreeFilter;
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| 16 |
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| 17 | public class TextInputRatioEvaluator extends RuleEvaluator {
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| 18 |
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| 19 | public TextInputRatioEvaluator(UsabilityRule evaluatedUsabilityRule, ITaskTree taskTree) {
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| 20 | super(evaluatedUsabilityRule, taskTree);
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| 21 | }
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| 22 |
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| 23 | @Override
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| 24 | protected FilterStatistic nodesUnderEvaluation(ITaskTree taskTree) {
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| 25 | Optional<FilterStatistic> cachedNodes = loadFromCache(TEXT_INPUT);
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| 26 | return cachedNodes.isPresent() ? cachedNodes.get() : cacheAndReturnNodes(taskTree, TEXT_INPUT);
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| 27 | }
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| 28 |
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| 29 | @Override
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| 30 | protected FilterStatistic extractNodesFromTaskTree(ITaskTree taskTree) {
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| 31 | return new TaskTreeFilter(new IterativeDFSFilterStrategy()).filterByEventType(TEXT_INPUT).from(taskTree);
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| 32 | }
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| 33 |
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| 34 | @Override
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| 35 | protected float calculateEvaluationMetric() {
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| 36 | float textInputEvents = this.filteredNodes.nrOfNodesMatchedFilter();
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| 37 | float nonTextInputEvents = nrOfEventNodesNotMatchedFilter();
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| 38 | return textInputEvents / (textInputEvents + nonTextInputEvents);
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| 39 | }
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| 40 |
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| 41 | private int nrOfEventNodesNotMatchedFilter() {
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| 42 | return Iterables.size(
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| 43 | Iterables.filter(this.filteredNodes.nodesNotMatchedFilter(), new Predicate<ITaskTreeNode>() {
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| 44 |
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| 45 | @Override
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| 46 | public boolean apply(ITaskTreeNode node) {
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| 47 | return (node.getChildren() == null) || (node.getChildren().size() == 0);
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| 48 | }
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| 49 | })
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| 50 | );
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| 51 | }
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| 52 |
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| 53 | @Override
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| 54 | protected Optional<UsabilityDefectSeverityLevel> determineSeverityLevel(float evaluationMetric) {
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| 55 | Optional<UsabilityDefectSeverityLevel> recommendationSeverityLevel = Optional.absent();
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| 56 | if (evaluationMetric > 0.9) {
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| 57 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.HIGH);
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| 58 | }
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| 59 | else if (evaluationMetric > 0.7) {
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| 60 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.MEDIUM);
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| 61 | }
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| 62 | else if (evaluationMetric > 0.5) {
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| 63 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.LOW);
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| 64 | }
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| 65 | else if (evaluationMetric > 0.3) {
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| 66 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.INFO);
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| 67 | }
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| 68 | return recommendationSeverityLevel;
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| 69 | }
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| 70 |
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| 71 | }
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