Package com.sun.jersey.samples.optimisticconcurrency.resources

Source Code of com.sun.jersey.samples.optimisticconcurrency.resources.ItemContentResource

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package com.sun.jersey.samples.optimisticconcurrency.resources;

import com.sun.jersey.api.ConflictException;
import com.sun.jersey.samples.optimisticconcurrency.ItemData;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

/**
*
* @author Paul.Sandoz@Sun.Com
*/
public class ItemContentResource {
   
    @GET
    public Response get() {
        ItemData id = ItemData.ITEM;
        MediaType mediaType = null;
        byte[] content = null;
        synchronized (id) {
            mediaType = id.getMediaType();
            content = id.getContent();
        }
       
        return Response.ok(content, mediaType).build();
    }
   
    @PUT
    @Path("{version}")
    public void put(
            @PathParam("version") int version,
            @Context HttpHeaders headers,
            byte[] in) {
        ItemData id = ItemData.ITEM;
        synchronized (id) {
            int currentVersion = id.getVersion();
            if (currentVersion > version) {
                throw new ConflictException("Conflict");
            }
            id.update(headers.getMediaType(), in);
        }
       
    }   
}
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