private Message handleRequestWithIfMatch(Request request) throws IOException {
final Path path = Path.fromString(request.uri().getPath());
final Resource resource = resolveResource(path);
final String ifMatch = getOnlyElement(request.headers().get(Header.IF_MATCH));
if (ifMatch.equals("*") || !ifMatch.equals(resource.etag())) {
return handleRequestWithoutIfMatch(request);
} else {
return Response.clientErrorPreconditionFailed();
}
}
private Message handleRequestWithIfModifiedSince(final Request request) throws IOException {
final Path path = Path.fromUri(request.uri());
final Resource resource = resolveResource(path);
try {
String date = getOnlyElement(request.headers().get(IF_MODIFIED_SINCE));
Date ifModifiedSince = new SimpleDateFormat().parse(date);
if (!ifModifiedSince.after(new Date()) && !(resource.lastModified().after(new Date()))) {
return redirectionNotModified();
} else {
return handleRequestWithoutIfModifiedSince(request);
}
} catch (ParseException e) {
return handleRequestWithoutIfModifiedSince(request);
}
}
private Message handleRequestWithoutIfModifiedSince(final Request request) throws IOException {
switch (request.method()) {
case POST:
case PUT:
// case DELETE:
// return delete(request);
case GET:
case HEAD:
if (request.headers().containsKey(Header.ACCEPT)) {
return handleRequestWithAccept(request);
} else {
return handleRequestWithoutAccept(request);
}
default:
return clientErrorMethodNotAllowed();
}
}