abhirockzz

@Path("info/{tweeter}")
@POST
@Consumes("application/x-www-form-urlencoded")
public Response postInfo(@FormParam("tweeter_id") String id, @FormParam("tweeter_email") String email){
	//use the injected values from HTML form attributes tweeter_id and tweeter_email
}

abhirockzz

@Path({id}/tweet)
@POST
@Consumes("application/json")
public Response postTweet(Tweet aTweet){
	//Tweet is a custom domain object
}

@Provider
@Consumes("application/json")
public TweetReader implements MessageBodyReader<Tweet>{

abhirockzz

@Provider
public class HeaderModifierFilter implements ContainerResponseFilter{
	public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) throws IOException{
		//logic here - add custom heasers to the response
	}
}

abhirockzz

@Provider
public CustomWriterInterceptor implements WriterInterceptor{
	@Override
	public void aroundWriteFrom(WriterInterceptorContext wic){
		//use the methods from the WriterInterceptorContext
		wic.proceed();
		//invoke the proceed method to get things moving!
	}
}

abhirockzz

@Path({user_id}/tweet/{tweet_id})
@GET
@Produces("application/json")
public Tweet getTweet(@PathParam("user_id") String userid, @PathParam("tweet_id") String tweeter){
	//use the userid and tweetid to fetch the Tweet (domain object) and return it - this will trigger the MessageBodyWriter implementation
}

@Provider
@Produces("application/json")
public TweetWriter implements MessageBodyWriter<Tweet>{

abhirockzz

public class EmbeddedEJBExample{
	//inject an EJB available on the classpath
	@EJB
	MyLocalEJB local;
	
	//use JNDI to talk to remotely deployed EJBs (via RMI)
	EJBContainer container = EJBContainer.createEJBContainer();
	Context context = container.getContext();
	ARemoteEJB remote = (ARemoteEJB) context.lookup(<provide JNDI name here >)
} 

abhirockzz

// is this robust enough ?

@WebService
public class POJO_WS{
    @WebMethod
    public String getDate(){
        System.out.println("hashCode -- "+ this.hashCode());
        return new Date().toString();
    }
}

abhirockzz

//not perfect - but better than just @WebService
//will recieve free services from the EJB container, courtsey @Stateless !

@Stateless
@WebService
public class POJO_EJB_and_SOAP {
    public String fetchDate(){
        System.out.println("hashCode -- "+ this.hashCode());
        return new Date().toString();
    }

abhirockzz

public class JCacheUsage{
    public static void main(String[] args){
        //bootstrap the JCache Provider
        CachingProvider jcacheProvider = Caching.getCachingProvider();
        CacheManager jcacheManager = jcacheProvider.getCacheManager();
        //configure cache
        MutableConfiguration<String, Integer> jcacheConfig = new MutableConfiguration<>();
        jcacheConfig.setTypes(String.class, MyPreciousObject.class);
        //create cache
        Cache<String, MyPreciousObject> cache = jcacheManager.createCache("PreciousObjectCache", jcacheConfig);

abhirockzz

//set JMV level system property
-Djavax.cache.spi.cachingprovider=org.ehcache.jcache.JCacheCachingProvider

//code level config
System.setProperty("javax.cache.spi.cachingprovider","org.ehcache.jcache.JCacheCachingProvider");

//you want to choose from multiple JCache providers at runtime
CachingProvider ehcacheJCacheProvider = Caching.getCachingProvider("org.ehcache.jcache.JCacheCachingProvider");

//which JCache providers do I have on the classpath?