RDFMediaType.java example

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fcrepo4-master
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 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership.
 *
 * DuraSpace licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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package org.fcrepo.http.commons.domain;

import static javax.ws.rs.core.Variant.mediaTypes;
import static org.apache.jena.riot.WebContent.contentTypeJSONLD;
import static org.apache.jena.riot.WebContent.contentTypeN3;
import static org.apache.jena.riot.WebContent.contentTypeN3Alt2;
import static org.apache.jena.riot.WebContent.contentTypeNTriples;
import static org.apache.jena.riot.WebContent.contentTypeRDFXML;
import static org.apache.jena.riot.WebContent.contentTypeTurtle;
import static org.apache.jena.riot.WebContent.contentTypeTurtleAlt2;

import java.util.List;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Variant;

/**
 * This is a convenience class carrying the various RDF content-type values as
 * Strings and MediaTypes, after the fashion of the constants available on
 * javax.ws.rs.core.MediaType
 *
 * @author ba2213
 */
public abstract class RDFMediaType extends MediaType {

    private static final String CHARSET_UTF8 = ";charset=utf-8";

    public static final String N3 = contentTypeN3;

    public static final MediaType N3_TYPE = typeFromString(N3);

    public static final String N3_WITH_CHARSET = N3 + CHARSET_UTF8;

    public static final String N3_ALT2 = contentTypeN3Alt2;

    public static final MediaType N3_ALT2_TYPE = typeFromString(N3_ALT2);

    public static final String N3_ALT2_WITH_CHARSET = N3_ALT2 + CHARSET_UTF8;

    public static final String TURTLE = contentTypeTurtle;

    public static final MediaType TURTLE_TYPE = typeFromString(TURTLE);

    public static final String TURTLE_WITH_CHARSET = TURTLE + CHARSET_UTF8;

    public static final String TURTLE_X = contentTypeTurtleAlt2;

    public static final MediaType TURTLE_X_TYPE = typeFromString(TURTLE_X);

    public static final String RDF_XML = contentTypeRDFXML;

    public static final MediaType RDF_XML_TYPE = typeFromString(RDF_XML);

    public static final String NTRIPLES = contentTypeNTriples;

    public static final MediaType NTRIPLES_TYPE = typeFromString(NTRIPLES);

    public final static String JSON_LD = contentTypeJSONLD;

    public final static MediaType JSON_LD_TYPE = typeFromString(JSON_LD);

    public final static String TEXT_PLAIN_WITH_CHARSET = TEXT_PLAIN + CHARSET_UTF8;

    public final static String TEXT_HTML_WITH_CHARSET = TEXT_HTML + CHARSET_UTF8;

    public static final List<Variant> POSSIBLE_RDF_VARIANTS = mediaTypes(
            RDF_XML_TYPE, TURTLE_TYPE, N3_TYPE, N3_ALT2_TYPE, NTRIPLES_TYPE,
            TEXT_PLAIN_TYPE, TURTLE_X_TYPE, JSON_LD_TYPE).add().build();

    public static final String POSSIBLE_RDF_RESPONSE_VARIANTS_STRING[] = {
        TURTLE_WITH_CHARSET, N3_WITH_CHARSET, N3_ALT2_WITH_CHARSET, RDF_XML, NTRIPLES,
        TEXT_PLAIN_WITH_CHARSET, TURTLE_X, JSON_LD };

    private static MediaType typeFromString(final String type) {
        return new MediaType(type.split("/")[0], type.split("/")[1]);
    }

}