com.github.carlomicieli.rest.resources.ScalesResource.java Source code

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Here is the source code for com.github.carlomicieli.rest.resources.ScalesResource.java

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/*
 * Copyright 2012 the original author or authors.
 * 
 * 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 com.github.carlomicieli.rest.resources;

import static com.github.carlomicieli.rest.representations.ScalesArrayRepresentation.createArray;

import java.net.URI;

import javax.inject.Inject;
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.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.CacheControl;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.dao.DataAccessException;

import com.github.carlomicieli.entities.Scale;
import com.github.carlomicieli.rest.representations.ScaleRepresentation;
import com.github.carlomicieli.services.ScaleService;
import com.sun.jersey.api.spring.Autowire;

/**
 * 
 * @author Carlo Micieli
 *
 */
@Autowire
@Scope("request")
@Path("/scales")
public class ScalesResource {
    private static final Logger log = LoggerFactory.getLogger("rest");

    private @Inject ScaleService scaleService;

    private CacheControl getCacheControl() {
        CacheControl cache = new CacheControl();
        cache.setMaxAge(10);
        cache.setPrivate(true);
        return cache;
    }

    /**
     * Return the list of all brands.
     * <p>
     * <code>GET /brands</code>
     * </p>
     * 
     * @return the list of brands.
     */
    @GET
    @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public Response getScales() {
        log.info("GET /scales");

        try {
            final ScaleRepresentation[] scales = createArray(scaleService.getAllScales());

            return Response.ok(scales).cacheControl(getCacheControl()).build();
        } catch (DataAccessException ex) {
            log.error(ex.getMessage());
            throw new WebApplicationException(Status.INTERNAL_SERVER_ERROR);
        }
    }

    @GET
    @Path("/{scaleId}")
    @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public Response getScale(@PathParam("scaleId") long scaleId) {
        log.info("GET /scales/{}", scaleId);

        try {
            final ScaleRepresentation scaleRep = new ScaleRepresentation(scaleService.getScale(scaleId));
            return Response.ok(scaleRep).tag(scaleRep.tag()).cacheControl(getCacheControl()).build();
        } catch (DataAccessException ex) {
            log.error(ex.getMessage());
            throw new WebApplicationException(Status.INTERNAL_SERVER_ERROR);
        }
    }

    @POST
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    public Response post(MultivaluedMap<String, String> formValues) {
        return post(new ScaleRepresentation(formValues));
    }

    @POST
    @Consumes({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public Response post(ScaleRepresentation scaleRep) {
        log.info("POST /scales");

        final Scale scale = scaleRep.getInner();

        try {
            long id = scaleService.create(scale);

            // the response contains the ETag for the resource just created.
            return Response.created(URI.create(Long.toString(id))).tag(scaleRep.tag()).build();
        } catch (RuntimeException ex) {
            log.error(ex.getMessage());
            throw new WebApplicationException(Status.INTERNAL_SERVER_ERROR);
        }
    }

    @PUT
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    public Response put(MultivaluedMap<String, String> formValues) {
        return put(new ScaleRepresentation(formValues));
    }

    @PUT
    @Consumes({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public Response put(ScaleRepresentation scaleRep) {
        log.info("PUT /scales");

        final Scale scale = scaleRep.getInner();

        try {
            scaleService.save(scale);

            // the response contains the ETag for the resource just created.
            return Response.noContent().tag(scaleRep.tag()).build();
        } catch (RuntimeException ex) {
            log.error(ex.getMessage());
            throw new WebApplicationException(Status.INTERNAL_SERVER_ERROR);
        }
    }

    @DELETE
    @Consumes({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public void delete(ScaleRepresentation scaleRep) {
        delete(scaleRep.getId());
    }

    @DELETE
    @Path("/{scaleId}")
    public void delete(@PathParam("scaleId") long scaleId) {
        log.info("DELETE /scales");

        try {
            scaleService.remove(new Scale(scaleId));
        } catch (RuntimeException ex) {
            log.error(ex.getMessage());
            throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
        }
    }
}