static List selectArtifactOverride()

in src/main/java/org/apache/sling/feature/builder/BuilderUtil.java [207:269]
53 lines of code
16 McCabe index (conditional complexity)

    static List<Artifact> selectArtifactOverride(Feature source, Artifact fromTarget, Artifact fromSource,
            List<ArtifactId> artifactOverrides, ArtifactId sourceID) {
        if (fromTarget.getId().equals(fromSource.getId())) {
            // They're the same so return the source (latest)
            return Collections.singletonList(addFeatureOrigin(selectStartOrder(fromTarget, fromSource, fromSource), source, fromSource, fromTarget));
        }

        final Set<ArtifactId> commonPrefixes = getCommonArtifactIds(fromTarget, fromSource);
        if (commonPrefixes.isEmpty()) {
            throw new IllegalStateException(
                    "Internal error selecting override. No common prefix between " + fromTarget + " and " + fromSource);
        }

        final List<Artifact> result = new ArrayList<>();
        if (artifactOverrides.isEmpty() && fromTarget.getMetadata().containsKey(BuilderUtil.class.getName() + "added")) {
            result.add(fromTarget);
            result.add(addFeatureOrigin(fromSource, source, fromSource));
            return result;
        }
        outer: for (ArtifactId prefix : commonPrefixes) {
            for (final ArtifactId override : artifactOverrides) {
                if (match(prefix, override)) {
                    String rule = override.getVersion();

                    if (BuilderContext.VERSION_OVERRIDE_ALL.equalsIgnoreCase(rule)) {
                        result.add(fromTarget);
                        result.add(fromSource);
                    } else if (BuilderContext.VERSION_OVERRIDE_HIGHEST.equalsIgnoreCase(rule)) {
                        Version a1v = fromTarget.getAliases(true).stream().filter(prefix::isSame).findFirst().get().getOSGiVersion();
                        Version a2v = fromSource.getAliases(true).stream().filter(prefix::isSame).findFirst().get().getOSGiVersion();
                        result.add(
                            addFeatureOrigin(
                                selectStartOrder(fromTarget, fromSource, a1v.compareTo(a2v) > 0 ? fromTarget : fromSource),
                                source, fromSource, fromTarget));
                    } else if (BuilderContext.VERSION_OVERRIDE_FIRST.equalsIgnoreCase(rule)) {
                        result.add(addFeatureOrigin(selectStartOrder(fromTarget, fromSource, fromTarget), source, fromSource, fromTarget));
                    } else if (BuilderContext.VERSION_OVERRIDE_LATEST.equalsIgnoreCase(rule)) {
                        result.add(addFeatureOrigin(selectStartOrder(fromTarget, fromSource, fromSource), source, fromSource, fromTarget));
                    } else {

                        // The rule must represent a version
                        // See if its one of the existing artifact. If so use those, as they may have
                        // additional metadata
                        if (fromTarget.getId().getVersion().equals(rule)) {
                            result.add(addFeatureOrigin(selectStartOrder(fromTarget, fromSource, fromTarget), source, fromSource, fromTarget));
                        } else if (fromSource.getId().getVersion().equals(rule)) {
                            result.add(addFeatureOrigin(selectStartOrder(fromTarget, fromSource, fromSource), source, fromSource, fromTarget));
                        } else {
                            // It's a completely new artifact
                            result.add(addFeatureOrigin(selectStartOrder(fromTarget, fromSource, new Artifact(override)), source, fromSource, fromTarget));
                        }
                    }
                    break outer;
                }
            }
        }
        if (!result.isEmpty()) {
            return result;
        }

        throw new IllegalStateException("Artifact override rule required to select between these two artifacts " +
                fromTarget + " and " + fromSource + ". The rule must be specified for " + commonPrefixes);
    }