Examples with VARY javax.ws.rs.core.HttpHeaders.VARY used on opensource projects

Example 1 with VARY

use of javax.ws.rs.core.HttpHeaders.VARY in project trellis by trellis-ldp.

the class GetHandler method getRepresentation.

/**
 * Build the representation for the given resource.
 *
 * @param builder the response builder
 * @return the response builder
 */
public CompletionStage<ResponseBuilder> getRepresentation(final ResponseBuilder builder) {
    // Add NonRDFSource-related "describe*" link headers, provided this isn't an extension resource
    getResource().getBinaryMetadata().filter(ds -> getExtensionGraphName() == null).ifPresent(ds -> {
        final String base = getBaseBinaryIdentifier();
        final String description = base + (base.contains("?") ? "&" : "?") + "ext=description";
        if (syntax != null) {
            builder.link(description, "canonical").link(base, "describes").link(base + "#description", "alternate");
        } else {
            builder.link(base, "canonical").link(description, "describedby").type(ds.getMimeType().orElse(APPLICATION_OCTET_STREAM));
        }
    });
    // Add a "self" link header
    builder.link(getSelfIdentifier(), "self");
    // NonRDFSources responses
    if (getResource().getBinaryMetadata().isPresent() && syntax == null) {
        return getLdpNr(builder.header(VARY, buildVaryHeader(false)));
    }
    // RDFSource responses
    final IRI profile = getProfile(getRequest().getAcceptableMediaTypes(), syntax);
    return completedFuture(getLdpRs(builder.header(VARY, buildVaryHeader(true)), syntax, profile));
}