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package com.sun.jersey.samples.hypermedia.server.controller;
import com.sun.jersey.core.hypermedia.Action;
import com.sun.jersey.core.hypermedia.ContextualActionSet;
import com.sun.jersey.core.hypermedia.HypermediaController;
import com.sun.jersey.core.hypermedia.HypermediaController.LinkType;
import com.sun.jersey.samples.hypermedia.server.db.DB;
import com.sun.jersey.samples.hypermedia.server.model.*;
import java.util.HashSet;
import java.util.Set;
import javax.ws.rs.Consumes;
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 static com.sun.jersey.samples.hypermedia.server.model.Product.Status.*;
/**
* ProductResource class.
*
* @author Santiago.PericasGeertsen@sun.com
*/
@Path("/products/{id}")
@HypermediaController(
model=Product.class,
linkType=LinkType.LINK_HEADERS
)
public class ProductResource {
private Product product;
public ProductResource(@PathParam("id") String id) {
product = DB.products.get(id);
if (product == null) {
throw new WebApplicationException(404); // not found
}
}
@GET
@Produces("application/xml")
public Product getProduct(@PathParam("id") String id) {
return product;
}
@PUT
@Consumes("application/xml")
public void putProduct(@PathParam("id") String id, Product product) {
assert id.equals(product.getId());
if (product.getQuantity() <= 0) {
assert product.getStatus() == OUT_OF_STOCK;
} else {
assert product.getStatus() == IN_STOCK;
}
this.product = product;
DB.products.put(id, product);
}
// -- Actions and ActionSets ------------------------------------
//
// Set a products's state as DISCONTINUED.
// For simplicity, this action is implemented by updating the
// product's status. Note that this could be done also using
// @PUT. In general, this action may involve several steps (a
// workflow) that cannot be easily translated into a single @PUT
// action by the client.
//
@GET
@Action("refresh") @Path("refresh")
@Produces("application/xml")
public Product refresh(@PathParam("id") String id) {
return getProduct(id);
}
@PUT
@Action("update") @Path("update")
@Consumes("application/xml")
public void update(@PathParam("id") String id, Product p) {
putProduct(id, p);
}
@POST
@Action("discontinue") @Path("discontinue")
public void discontinue() {
product.setStatus(DISCONTINUED);
}
/**
* Product Version 1.
*/
@ContextualActionSet
public Set<String> getContextualActionSet() {
Set<String> result = new HashSet<String>();
result.add("refresh");
result.add("update");
switch (product.getStatus()) {
case OUT_OF_STOCK:
result.add("discontinue"); // @Action's value
break;
}
return result;
}
}