CommentData.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.wink.itest.subresource;

import java.net.URI;
import java.net.URISyntaxException;

import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.core.Response.Status;

public class CommentData {

    final private String commentId;

    public CommentData(String id) {
        this.commentId = id;
    }

    @GET
    @Produces("text/xml")
    public Response retrieveComment() {
        if (commentId == null) {
            return Response.status(Status.NOT_FOUND).build();
        }

        Comment existingComment =
            GuestbookDatabase.getGuestbook().getComment(Integer.valueOf(commentId));
        if (existingComment == null) {
            return Response.status(Status.NOT_FOUND).build();
        }
        return Response.ok(existingComment).build();
    }

    @POST
    @Produces("text/xml")
    @Consumes("text/xml")
    public Response createComment(Comment comment, @Context UriInfo uriInfo) {
        /*
         * If no comment data was sent, then return a bad request.
         */
        if (comment == null) {
            throw new WebApplicationException(Response.Status.BAD_REQUEST);
        }

        if (comment.getId() == null || comment.getMessage() == null || comment.getAuthor() == null) {
            CommentError commentError = new CommentError();
            commentError.setErrorMessage("Please include a comment ID, a message, and your name.");
            Response resp =
                Response.status(Response.Status.BAD_REQUEST).entity(commentError)
                    .type("application/xml").build();
            throw new WebApplicationException(resp);
        }

        GuestbookDatabase.getGuestbook().storeComment(comment);
        try {
            return Response.created(new URI(uriInfo.getAbsolutePath() + "/" + comment.getId()))
                .entity(comment).build();
        } catch (URISyntaxException e) {
            e.printStackTrace();
            throw new WebApplicationException(e);
        }
    }

    @PUT
    public Response updateComment(Comment comment) throws GuestbookException {
        if (comment.getId() == null || !Integer.valueOf(commentId).equals(comment.getId())) {
            throw new GuestbookException("Unexpected ID.");
        }

        Comment existingComment =
            GuestbookDatabase.getGuestbook().getComment(Integer.valueOf(comment.getId()));
        if (existingComment == null) {
            throw new GuestbookException("Cannot find existing comment to update.");
        }
        GuestbookDatabase.getGuestbook().storeComment(comment);
        return Response.ok(comment).build();
    }

    @DELETE
    public void deleteComment() {
        GuestbookDatabase.getGuestbook().deleteComment(Integer.valueOf(commentId));
    }
}