Resource.java

package com.phonoforce.tramory.rest.resources;

import com.phonoforce.tramory.Server;
import com.phonoforce.tramory.entities.IEntity;

import javax.ws.rs.*;

public class Resource<T extends IEntity> {
    private Server server;
    private Class<T> clazz;

    public Resource(Class<T> clazz) {
        this.clazz = clazz;
        this.server = Server.getInstance();
    }

    @GET
    @Path("/{entity_id}")
    @Produces("application/json")
    public T get(@PathParam("entity_id") int id) {
        return this.server.getEntityById(this.clazz, id);
    }

    @POST
    @Produces("application/json")
    @Consumes("application/json")
    public T create(T entity) {
        this.server.insertEntity(entity);

        return entity; // TODO: http status code
    }

    @PUT
    @Path("/{entity_id}")
    @Produces("application/json")
    @Consumes("application/json")
    public T update(@PathParam("entity_id") int id, T entity) {
        if (id != entity.getId() && entity.getId() != 0){
            System.out.println("ID = " + id);
            return null; // TODO (error message for URL ID doesnt match entity id)
        }

        this.server.insertIntoDB(entity);
        return entity; // TODO: http status code
    }

    @DELETE
    @Path("/{entity_id}")
    @Produces("application/json")
    public T delete(@PathParam("entity_id") int id) {
        return this.server.dropEntityById(this.clazz, id);
    }
}