Examples with MediaType org.apache.jena.atlas.web.MediaType used on opensource projects

Example 31 with MediaType

use of org.apache.jena.atlas.web.MediaType in project jena by apache.

the class ResponseDataset method doResponseDataset.

public static void doResponseDataset(HttpAction action, Dataset dataset) {
    HttpServletRequest request = action.getRequest();
    // Header request type
    String mimeType = null;
    MediaType i = ConNeg.chooseContentType(request, DEF.constructOffer, DEF.acceptTurtle);
    if (i != null)
        mimeType = i.getContentTypeStr();
    String outputField = ResponseOps.paramOutput(request, shortNamesModel);
    if (outputField != null)
        mimeType = outputField;
    String writerMimeType = mimeType;
    if (mimeType == null) {
        Fuseki.actionLog.warn("Can't find MIME type for response");
        String x = FusekiNetLib.getAccept(request);
        String msg;
        if (x == null)
            msg = "No Accept: header";
        else
            msg = "Accept: " + x + " : Not understood";
        ServletOps.error(HttpSC.NOT_ACCEPTABLE_406, msg);
    }
    String contentType = mimeType;
    String charset = charsetUTF8;
    String forceAccept = ResponseOps.paramForceAccept(request);
    if (forceAccept != null) {
        contentType = forceAccept;
        charset = charsetUTF8;
    }
    Lang lang = RDFLanguages.contentTypeToLang(contentType);
    if (lang == null)
        ServletOps.errorBadRequest("Can't determine output content type: " + contentType);
    RDFFormat format = ActionLib.getNetworkFormatForLang(lang);
    try {
        ServletOps.success(action);
        ServletOutputStream out = action.getResponseOutputStream();
        try {
            // Use the Content-Type from the content negotiation.
            if (RDFLanguages.isQuads(lang))
                ActionLib.datasetResponse(action, dataset.asDatasetGraph(), format, contentType);
            else
                ActionLib.graphResponse(action, dataset.getDefaultModel().getGraph(), format, contentType);
            out.flush();
        } catch (JenaException ex) {
            ServletOps.errorOccurred("Failed to write output: " + ex.getMessage(), ex);
        }
    } catch (ActionErrorException ex) {
        throw ex;
    } catch (Exception ex) {
        action.log.info("Exception while writing the response model: " + ex.getMessage(), ex);
        ServletOps.errorOccurred("Exception while writing the response model: " + ex.getMessage(), ex);
    }
}

Example 32 with MediaType

use of org.apache.jena.atlas.web.MediaType in project jena by apache.

the class GSP_R method execHeadQuads.

protected void execHeadQuads(HttpAction action) {
    ActionLib.setCommonHeaders(action);
    MediaType mediaType = ActionLib.contentNegotationQuads(action);
    if (action.verbose)
        action.log.info(format("[%d]   Head: Content-Type=%s", action.id, mediaType.getContentTypeStr()));
    ServletOps.success(action);
}

Example 33 with MediaType

use of org.apache.jena.atlas.web.MediaType in project jena by apache.

the class RDFLanguages method getCharsetForContentType.

public static String getCharsetForContentType(String contentType) {
    MediaType ct = MediaType.create(contentType);
    if (ct.getCharset() != null)
        return ct.getCharset();
    String mt = ct.getContentTypeStr();
    if (contentTypeNTriples.equals(mt))
        return charsetUTF8;
    if (contentTypeNTriplesAlt.equals(mt))
        return charsetASCII;
    if (contentTypeNQuads.equals(mt))
        return charsetUTF8;
    if (contentTypeNQuadsAlt1.equals(mt))
        return charsetASCII;
    return charsetUTF8;
}