JAX-RS - @PUT Examples

import com.logicbig.example.DataService;
import com.logicbig.example.Item;

import javax.ws.rs.*;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import java.util.List;

@Path("items")
public class ItemRestService {

    @Context
    private UriInfo uriInfo;

    private DataService dataService = DataService.getInstance();

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public List<Item> getItems() {
        return dataService.getItemList();
    }


    @Path("{sku}")
    @PUT
    @Consumes(MediaType.APPLICATION_JSON)
    public Response createItem(Item item, @PathParam("sku") String sku) {
        if (dataService.itemExists(sku)) {
            //status code 204
            return Response.noContent()
                      .build();
        } else {
            dataService.createItem(item, sku);
            //status code 201
            //sends back new URI in header key = 'LOCATION'
            return Response.created(uriInfo.getAbsolutePath())
                      .build();
        }
    }

    @GET
    @Path("{sku}")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getCustomer(@PathParam("sku") String sku) {
        Item item = dataService.getItemBySku(sku);
        if (item == null) {
            return Response.status(Response.Status.NOT_FOUND)
                      .build();
        } else {
            return Response.ok()
                      .entity(item)
                      .build();
        }
    }
}

@Path("/")
public class MyResource {

    @Path("/test")
    @GET
    public Response handle() {
        Response r = Response.ok("test with GET, body content")
                             .build();
        return r;
    }


    @Path("/test2")
    @GET
    public Response handle2() {
        Response r = Response.ok("test2 with GET, body content")
                             .build();
        return r;
    }

    @Path("/test2")
    @POST
    public Response handle3() {
        Response r = Response.ok("test2 with POST, body content")
                             .build();
        return r;
    }

    @Path("/test2")
    @HEAD
    public Response handle4() {
        Response r = Response.ok("test2 with HEAD, body content")
                             .build();
        return r;
    }

    @Path("/test3")
    @GET
    public Response handle5() {
        Response r = Response.ok("test3 with GET, body content")
                             .build();
        return r;
    }

    @Path("/test3")
    @OPTIONS
    public Response handle6() {
        Response r = Response.ok("test3 with OPTIONS, body content")
                             .header("Allow", "GET")
                             .header("Allow", "OPTIONS")
                             .build();
        return r;
    }

    @Path("/test4")
    @DELETE
    public Response handle7() {
        Response r = Response.ok("test4 with DELETE, body content")
                             .build();
        return r;
    }

    @Path("/test4")
    @PUT
    public Response handle8() {
        Response r = Response.ok("test4 with PUT, body content")
                             .build();
        return r;
    }
}

public interface AppResource<T> {

    @PUT
    @Path("{newId}")
    @Consumes(MediaType.APPLICATION_XML)
    String create(T t, @PathParam("newId") long newId);

    @DELETE
    @Path("{id}")
    String delete(@PathParam("id") long id);

    @POST
    @Consumes(MediaType.APPLICATION_XML)
    String update(T t);

    @GET
    @Produces(MediaType.APPLICATION_XML)
    List<T> list();

    @GET
    @Path("{id}")
    @Produces(MediaType.APPLICATION_XML)
    T byId(@PathParam("id") long id);
}