HeroController.java

package io.navan.heroesbackend;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.data.rest.webmvc.ResourceNotFoundException;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation...

@RestController
@RequestMapping(value = "heroes")
public class HeroController {

    @Autowired
    HeroRepository heroRepository;

    private static final Logger LOG = LoggerFactory.getLogger(HeroController.class);

    /**
     * Create a hero. Returned hero will have the auto-generated id of the new hero.
     * 
     * @param hero
     * @return the created hero
     */
    @PostMapping(consumes = "application/json", produces = "application/json")
    @ResponseStatus(HttpStatus.CREATED)
    public Hero createHero(@RequestBody Hero hero) {
        LOG.debug("createHero: {}", hero.getName());
        Hero createdHero = heroRepository.save(hero);
        LOG.debug("Created hero {} with id {}", createdHero.getName(), createdHero.getId());
        return createdHero;
    }

    /**
     * Retrieve all heroes
     * 
     * @return iterable with all heroes
     */
    @GetMapping(produces = "application/json")
    @ResponseStatus(HttpStatus.OK)
    public @ResponseBody Iterable<Hero> allHeroes() {
        LOG.debug("allHeroes");
        return heroRepository.findAll();
    }

    /**
     * Get a hero by id.
     * 
     * @param id
     *            the hero's id
     * @return the hero
     */
    @GetMapping(value = "/{id}", produces = "application/json")
    @ResponseStatus(HttpStatus.OK)
    public @ResponseBody Hero singleHero(@PathVariable Long id) {
        LOG.debug("singleHero for id {}", id);
        Hero hero = heroRepository.findOne(id);
        if (hero == null) {
            throw new ResourceNotFoundException("Hero not found for id: " + id);
        }
        return hero;
    }

    /**
     * Update a hero. Hero must exist for id.
     * 
     * @param id
     *            The id of the hero to update
     * @param hero
     *            The hero value
     * @throws ResourceNotFoundException
     *             if not found.
     */
    @PutMapping(value = "/{id}", consumes = "application/json", produces = "application/json")
    @ResponseStatus(HttpStatus.NO_CONTENT)
    public void updateHero(@PathVariable Long id, @RequestBody Hero hero) {
        // Retrieve hero first. This is the only way to ensure hero already exists prior
        // to saving.
        Hero currentHero = heroRepository.findOne(id);
        if (currentHero == null) {
            throw new ResourceNotFoundException("Hero is not found for id=" + id);
        }
        LOG.debug("updateHero: modified name from {} to {}", currentHero.getName(), hero.getName());
        currentHero.setName(hero.getName());
        this.heroRepository.save(currentHero);
    }

    /**
     * Delete hero
     * 
     * @param id
     * @throws ResourceNotFoundException
     *             if not found.
     */
    @DeleteMapping(value = "/{id}")
    @ResponseStatus(HttpStatus.NO_CONTENT)
    public void deleteHero(@PathVariable Long id) {
        LOG.debug("delete >{}<", id);
        try {
            heroRepository.delete(id);
        } catch (EmptyResultDataAccessException e1) {
            throw new ResourceNotFoundException("Cannot delete Hero with id " + id + ". Not found", e1);
        }
    }

    /**
     * Find hero with name containing string (not case sensitive)
     * 
     * @param name
     *            The string to search for.
     * @return Iterable with heroes with matching names.
     */
    @GetMapping(value = "/search/name", produces = "application/json")
    @ResponseStatus(HttpStatus.OK)
    public Iterable<Hero> findByName(@RequestParam("contains") String name) {
        LOG.debug("findByName >{}<", name);
        return heroRepository.findByName(name);
    }
}