java-ee

.NET Attributes versus Java Annotations: Which Came First?

I'm a .NET developer learning Java EE. These two concepts seem to serve the same exact purposes in either system. So which framework gets credit for inventing them? ...

Redirect from docroot to an external url in glassfish

I've googled around and only found solution where they suggest putting an apache httpd in front of glassfish. Sure, that works. But what if I do not wish to/cannot put any thing in front of glassfish? Without using the index.jsp in the docroot of the domain to have something like: <% String redirectURL = "http://stackoverflow.com/...

Deploying a .ear on two different clusters

I have an application in a .ear: a .war archive and a .jar with EJBs. There are two clusters of servers. I want to deploy my .war on one cluster and the .jar to another, so that both of them can be individually deployed and to allow proper load balancing. Currently I'm getting the following error: Error resolving ejb-ref 'over.9.thous...

How to convert map to url query string?

Do you know of any utility class/library, that can convert Map into URL-friendly query string? Example: I have a map: - "param1"=12, - "param2"="cat" I want to get: param1=12&param2=cat. PS. I know I can easily write it myself, I am just surprised that I cannot find it anywhere (I checked Apache Commons so far). ...

Stateful EJBs in web application?

Hello I never used stateful EJBs. I understand that a stateful EJB can be useful with a java client. But i wonder: in which case to use them on a web application? And how? Should we put these stateful beans in Session (because of stateless http)? Is it a good practice? (without debating too much about stateful vs stateless) ...

How to use Enum as NamedQuery parameters in JPA

I have an Entity with a enum attribute and a couple on NamedQueries. One of these NamedQueries has the enum attribute as a parameter i.e. SELECT m FROM Message m WHERE m.status = :status When i try to ru n the query i get the following error; Caused by: java.lang.IllegalArgumentException: You have attempted to set a value of type clas...

JSF: initial request and postback request?

Please take a look at this below line of code in JSF <h:inputText id="name" value="#{customer.name}" /> Quote from java.sun.com For an initial request of the page containing this tag, the JavaServer Faces implementation evaluates the #{customer.name} expression during the render response phase of the lifecycle. During this phase, the...

JMX - MBean automated registration on application deployment

Hi All, I need some direction with JMX and J2EE. I am aware (after few weeks of research) that the JMX specification is missing as far as deployment is concerned. There are few vendor specific implementations for what I am looking for but none are cross vendor. I would like to automate the deployment of MBeans and registration with the...

When can we expect Core JEE Patterns from SUN/Oracle like we already have for J2EE?

Just like we have www.corej2eepatterns.com for J2EE, when can we expect any resource(book) on patterns for JEE5/6? ...

Programmatic authentication in JEE 6

Hello, is it possible to authenticate programmatically a user in J2ee 6? Let me explain with some more details: I've got an existing Java SE project with Servlets and hibernate; where I manage manually all the authentication and access control: class Authenticator { int Id string username } Authenticator login(string username...

How do I obtain a new stateful session bean in a servlet thread?

I'm experimenting with EJB3 I would like to inject a stateful session bean into a servlet, so that each user that hits the servlet would obtain a new bean. Obviously, I can't let the bean be an instance variable for the servlet, as that will be shared. And apparantly injecting local variables isn't allowed. I can use the new operator...

Creating new JCAPS eWays (like HL7, JMS, ...)

Hello, I'm wondering how, in JCAPS 6, we can create new eWays. By eWay, I mean the components like the existing HL7, JMS, File, eMails (ie, external applications) ... I am not sure about the exact name of these entites, "API oriented OTD", JBI, JCA. Basically, I would like to create an object that: - is part of the Connectivity Map - h...

How to use JNDI to obtain a new Stateful Session Bean, in EJB3?

I'm trying to use JNDI to obtain a new Stateful Session Bean in a servlet (as a local variable). My doGet() method has the following: Bean bean = (Bean) new InitialContext().lookup("beanName"); I've tried including java:comp/env but all of my attempts have led to naming exceptions. I'm attempting to bind the bean in the @Stateful an...

jsf and huge web site

Hi All, I need to program a very huge web site. The site should contain public part with search engine, user registration forms, cart and all other stuff. The private part should contain administrative web application with a lot of data grids, complex edit forms, security checks, services and so on. Also I need very good support for htm...

java.util.zip.ZipException in Glassfish (v3) application deployment

Hello, I've got a strange exception with my EJB3.1 application, a ZipException is thrown during the application deployment: [#|2010-05-15T16:01:44.688+0100|SEVERE|glassfish3.0.1|javax.enterprise.system.container.web.org.glassfish.web.loader|_ThreadID=22;_ThreadName=Thread-1;|WEB9051: Error trying to scan the classes at /Users/kevin/Docu...

What is the difference between Spring, Struts, Hibernate, JavaServer Faces, Tapestry?

Hi, May I know what is the difference between:- Spring Struts Struts 2 Hibernate JavaServer Faces JavaServer Pages Tapestry Are these technologies/framework complementary to each other? Or they are alternatives to each other (after I use one of them, then I don't need to use the other)? Thanks. ...

How can I connect two users so they can share common object (game instance) with use of J2EE web technologies (JSP, Spring etc.)?

My idea is that player 1 creates a game (for two players), server returns him a URL, player 1 sends this URL to player 2 and the player 2 opens URL and that connects him to the game. What is the best and the easiest way to achieve this using JSP and related technologies? ...

Eclipse IDE vs Netbeans IDE, which one is better for Java EE 6 development?

Hi, I would like to know which IDE is better for Java EE 6 development. Can anyone give me the comparison of these 2 IDE in terms of features? Thanks. ...

Problem with JSTL and weblogic

I get the following error when I run my java ee app on weblogic, javax.servlet.jsp.el.ELException: Cannot find PropertyDescriptor for 'name' for bean 'class java.lang.String' I want to print a list of artists with the following class, public class Artist { private int id; private String name; private String genr...

Why does my JSF + Spring web application output JSF source code instead of interpreted HTML page?

I'm new to both JSF and Spring Framework and I'm trying to figure out how to make them work together. My current problem is that application outputs my JSF files without interpreting them. Here are some snippets of my code which I believe might be relevant: dispatcher-servlet.xml <bean id="urlMapping" class="org.springframework.web.se...