de.escalon.hypermedia.spring.sample.ReviewController.java Source code

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Here is the source code for de.escalon.hypermedia.spring.sample.ReviewController.java

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/*
 * Copyright (c) 2014. Escalon System-Entwicklung, Dietrich Schulten
 *
 * Licensed 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 de.escalon.hypermedia.spring.sample;

import de.escalon.hypermedia.action.Action;
import de.escalon.hypermedia.spring.AffordanceBuilder;
import org.springframework.hateoas.Resources;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.util.Assert;
import org.springframework.web.bind.annotation.*;

import java.util.Arrays;
import java.util.List;

/**
 * Sample controller for reviews.
 * Created by dschulten on 16.09.2014.
 */
@Controller
@RequestMapping("/reviews")
public class ReviewController {

    @SuppressWarnings("unchecked")
    List<List<Review>> reviews = Arrays.asList(Arrays.asList(new Review("Five peeps, one guitar", new Rating(5))),
            Arrays.asList(new Review("Great actress, special atmosphere", new Rating(5))));

    @RequestMapping(value = "/events/{eventId}", method = RequestMethod.GET)
    @ResponseBody
    public Resources<Review> getReviews(@PathVariable int eventId) {
        final Resources<Review> reviewResources = new Resources<Review>(reviews.get(eventId));
        reviewResources.add(
                AffordanceBuilder.linkTo(AffordanceBuilder.methodOn(EventController.class).getEvent((Integer) null)) // pass null to create template
                        .withRel("hydra:search"));
        return reviewResources;
    }

    @RequestMapping(value = "/events/{eventId}", method = RequestMethod.POST)
    public @ResponseBody ResponseEntity<Void> addReview(@PathVariable int eventId, @RequestBody Review review) {
        Assert.notNull(review);
        Assert.notNull(review.getReviewRating());
        Assert.notNull(review.getReviewRating().getRatingValue());
        final HttpHeaders headers = new HttpHeaders();
        headers.setLocation(
                AffordanceBuilder.linkTo(AffordanceBuilder.methodOn(this.getClass()).getReviews(eventId)).toUri());
        return new ResponseEntity(headers, HttpStatus.CREATED);
    }

    @Action("ReviewAction")
    @RequestMapping(value = "/events/{eventId}", method = RequestMethod.POST, params = { "review", "rating" })
    public @ResponseBody ResponseEntity<Void> addReview(@PathVariable int eventId, @RequestParam String review,
            @RequestParam int rating) {
        final HttpHeaders headers = new HttpHeaders();
        headers.setLocation(
                AffordanceBuilder.linkTo(AffordanceBuilder.methodOn(this.getClass()).getReviews(eventId)).toUri());
        return new ResponseEntity(headers, HttpStatus.CREATED);
    }
}