protected static String getFinalTarget(ResourceHandle resource, List<String> trace)
throws RedirectLoopException {
String finalTarget = null;
if (resource.isValid()) {
String path = resource.getPath();
if (trace.contains(path)) {
throw new RedirectLoopException(trace, path);
}
String redirect = resource.getProperty(PROP_TARGET);
if (StringUtils.isBlank(redirect)) {
redirect = resource.getProperty(PROP_REDIRECT);
}
if (StringUtils.isNotBlank(redirect)) {
trace.add(path);
finalTarget = redirect;
if (!URL_PATTERN.matcher(finalTarget).matches()) {
ResourceResolver resolver = resource.getResourceResolver();
Resource targetResource = resolver.getResource(finalTarget);
if (targetResource != null) {
String target = getFinalTarget(ResourceHandle.use(targetResource), trace);
if (StringUtils.isNotBlank(target)) {
finalTarget = target;
}
}
}
}
}
return finalTarget;
}
