WadlMethodFactory.java

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package com.sun.jersey.server.impl.wadl;

import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.model.AbstractResource;
import com.sun.jersey.api.uri.UriTemplate;
import com.sun.jersey.core.header.MediaTypes;
import com.sun.jersey.server.impl.model.method.ResourceHttpOptionsMethod;
import com.sun.jersey.server.impl.model.method.ResourceMethod;
import com.sun.jersey.server.wadl.WadlApplicationContext;
import com.sun.research.ws.wadl.Application;

import javax.ws.rs.core.Response;
import javax.xml.bind.Marshaller;
import java.io.ByteArrayOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Paul.Sandoz@Sun.Com
 */
/* package */ final class WadlMethodFactory {

    public static final class WadlOptionsMethod extends ResourceMethod {
        public WadlOptionsMethod(Map<String, List<ResourceMethod>> methods,
                                 AbstractResource resource, String path,
                                 WadlApplicationContext wadlApplicationContext) {
            super("OPTIONS",
                    UriTemplate.EMPTY,
                    MediaTypes.GENERAL_MEDIA_TYPE_LIST,
                    MediaTypes.GENERAL_MEDIA_TYPE_LIST,
                    false,
                    new WadlOptionsMethodDispatcher(methods, resource, path, wadlApplicationContext));
        }

        @Override
        public String toString() {
            return "WADL OPTIONS method" ;
        }
    }

    private static final class WadlOptionsMethodDispatcher extends
            ResourceHttpOptionsMethod.OptionsRequestDispatcher {
        private final AbstractResource resource;
        private final String path;
        private final WadlApplicationContext wadlApplicationContext;
        private final String lastModified;

        private static final Logger LOGGER = Logger.getLogger(WadlOptionsMethodDispatcher.class.getName());

        WadlOptionsMethodDispatcher(Map<String, List<ResourceMethod>> methods,
                                    AbstractResource resource, String path,
                                    WadlApplicationContext wadlApplicationContext) {
            super(methods);
            this.resource = resource;
            this.path = path;
            this.wadlApplicationContext = wadlApplicationContext;
            this.lastModified = new SimpleDateFormat(WadlResource.HTTPDATEFORMAT).format(new Date());
        }

        @Override
        public void dispatch(final Object o, final HttpContext context) {
            if(wadlApplicationContext.isWadlGenerationEnabled()) {
                final Application a = wadlApplicationContext.getApplication(
                        context.getUriInfo(),
                        resource, path);

                try {
                    final Marshaller marshaller = wadlApplicationContext.getJAXBContext().createMarshaller();
                    marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
                    final ByteArrayOutputStream os = new ByteArrayOutputStream();
                    marshaller.marshal(a, os);
                    os.close();

                    context.getResponse().setResponse(
                            Response.ok(os.toByteArray(), MediaTypes.WADL).
                                    header("Allow", allow).header("Last-modified", lastModified).build());
                } catch (Exception e) {
                    LOGGER.log(Level.WARNING, "Could not marshal wadl Application.", e);

                    context.getResponse().setResponse(
                            Response.noContent().header("Allow", allow).build());
                }
            } else {
                context.getResponse().setResponse(
                        Response.noContent().header("Allow", allow).build());
            }
        }
    }

}