public static Feature compareFeatures()

in src/main/java/org/apache/sling/feature/diff/impl/FeatureDiffImpl.java [40:74]
28 lines of code
5 McCabe index (conditional complexity)

    public static Feature compareFeatures(DiffRequest diffRequest) {
        requireNonNull(diffRequest, "Impossible to compare features without specifying them.");
        Feature previous = requireNonNull(diffRequest.getPrevious(), "Impossible to compare null previous feature.");
        Feature current = requireNonNull(diffRequest.getCurrent(), "Impossible to compare null current feature.");

        if (previous.getId().equals(current.getId())) {
            throw new IllegalArgumentException("Input Features refer to the the same Feature version.");
        }

        StringBuilder classifier = new StringBuilder();
        if (current.getId().getClassifier() != null && !current.getId().getClassifier().isEmpty()) {
            classifier.append(current.getId().getClassifier())
                      .append('_');
        }
        classifier.append(UPDATER_CLASSIFIER);

        ArtifactId resultId = new ArtifactId(current.getId().getGroupId(),
                                             current.getId().getArtifactId(),
                                             current.getId().getVersion(),
                                             classifier.toString(),
                                             current.getId().getType());

        Feature target = new Feature(resultId);
        target.setTitle(previous.getId() + " to " + current.getId());
        target.setDescription("Computed " + previous.getId() + " to " + current.getId() + " Feature update");

        Prototype prototype = new Prototype(previous.getId());
        target.setPrototype(prototype);

        for (FeatureElementComparator comparator : loadComparators(diffRequest)) {
            comparator.computeDiff(previous, current, target);
        }

        return target;
    }