public void orderBefore()

in src/main/java/org/apache/sling/resource/collection/impl/ResourceCollectionImpl.java [245:293]
43 lines of code
7 McCabe index (conditional complexity)

    public void orderBefore(Resource srcResource, Resource destResource) {
        if (srcResource == null) {
            throw new IllegalArgumentException("Source Resource can not be null");
        }
        ModifiableValueMap vm = membersResource.adaptTo(ModifiableValueMap.class);
        String[] order = vm.get(ResourceCollectionConstants.REFERENCES_PROP, new String[] {});
        String srcPath = srcResource.getPath();
        int srcIndex = ArrayUtils.indexOf(order, srcPath);
        if (srcIndex < 0) {
            log.warn(
                    "Collection ordering failed, as there is no resource {} in collection {} for destResource",
                    srcPath,
                    getPath());
            return;
        }
        if (destResource == null) {
            // add it to the end.
            order = ArrayUtils.remove(order, srcIndex);
            order = ArrayUtils.add(order, srcPath);
        } else {
            String destPath = destResource.getPath();

            if (destPath.equals(srcPath)) {
                String message = MessageFormat.format(
                        "Collection ordering failed, as source {0} and destination {1} can not be same",
                        srcPath, destPath);
                log.error(message);
                throw new IllegalArgumentException(message);
            }

            int destIndex = ArrayUtils.indexOf(order, destPath);

            if (destIndex < 0) {
                log.warn(
                        "Collection ordering failed, as there is no resource {} in collection {} for destResource",
                        destPath,
                        getPath());
                return;
            }

            order = ArrayUtils.remove(order, srcIndex);
            if (srcIndex < destIndex) { // recalculate dest index
                destIndex = ArrayUtils.indexOf(order, destPath);
            }
            order = ArrayUtils.add(order, destIndex, srcPath);
        }

        vm.put(ResourceCollectionConstants.REFERENCES_PROP, order);
    }