funnycats.CatController.java Source code

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Here is the source code for funnycats.CatController.java

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/*
 * The MIT License
 *
 * Copyright (c) <2011> <Bruno P. Kinoshita>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package funnycats;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * @author Bruno P. Kinoshita - http://www.kinoshita.eti.br
 * @since 0.1
 */
@Controller
@RequestMapping(value = "/cats")
public class CatController {

    // FIXME: Err, that's only for the demo application. Don't do this in real applications :)
    public static final Map<Long, FunnyCat> cats = new ConcurrentHashMap<Long, FunnyCat>();

    @RequestMapping(method = RequestMethod.GET)
    public String getCats(Model model) {
        model.addAttribute(new FunnyCat());
        return "cats/main";
    }

    @RequestMapping(method = RequestMethod.POST)
    public String rate(FunnyCat cat, BindingResult result) {
        if (result.hasErrors()) {
            return "cats/main";
        }
        // TBD: access as static variable
        this.cats.put(cat.getId(), cat);
        return "redirect:/cats/view/" + cat.getId();
    }

    @RequestMapping(value = "{id}", method = RequestMethod.GET)
    public String getView(@PathVariable Long id, Model model) {
        FunnyCat cat = this.cats.get(id);
        if (cat == null) {
            throw new RuntimeException("Funny cat went somewhere... look for his ID: " + id);
        }
        model.addAttribute("cat", cat);
        Long next = cat.getId() + 1;
        if (this.cats.get(next) != null) {
            model.addAttribute("next", next);
        } else {
            model.addAttribute("next", Long.valueOf(1));
        }
        return "cats/view";
    }

}