Correct use of Tika's MediaType

[אברהם חיון]

I want to use Tika's MediaType class to compare mediaTypes.

I first use Tika to detect the MediaType. Then I want to start an action
according to the MediaType.

So if the MediaType is from type XML I want to do some action, if it is a
compressed file I want to start an other action.

My problem is that there are many XML types, so how do I check if it is an
XML using the MediaType ?

Here is my previous (before Tika) implementation:

if (contentType.contains("text/xml") ||
    contentType.contains("application/xml") ||
    contentType.contains("application/x-xml") ||
    contentType.contains("application/atom+xml") ||
    contentType.contains("application/rss+xml")) {
        processXML();
}

else if (contentType.contains("application/gzip") ||
    contentType.contains("application/x-gzip") ||
    contentType.contains("application/x-gunzip") ||
    contentType.contains("application/gzipped") ||
    contentType.contains("application/gzip-compressed") ||
    contentType.contains("application/x-compress") ||
    contentType.contains("gzip/document") ||
    contentType.contains("application/octet-stream")) {
        processGzip();
}

I want to switch it to use Tika something like the following:

MediaType mediaType = MediaType.parse(contentType);
if (mediaType == APPLICATION_XML) {
    return processXml();
} else if (mediaType == APPLICATION_ZIP || mediaType == OCTET_STREAM) {
    return processGzip();
}

But the problem is that Tika.detect(...) returns many different types which
don't have a MediaType constant.

How can I just identify the MediaType if it is type XML ? Or if it is type
Compress ? I need a "Father" type which includes all of it's childs, maybe
a method which is: "boolean isXML()" which includes application/xml and
text/xml and application/x-xml or "boolean isCompress()" which includes all
of the zip + gzip types etc