Java EE

Introducing Ajax -- just like any other technology or pattern -- into a Java EE application has its advantages and disadvantages.

The long-awaited next version of the Java EE 5 is knocking at the door (see Resources for links to the specification and preview release).

Apache have decided not to add support for the full Java EE 6 web profile to Tomcat, at least for the moment.

In previous Java EE platforms, such a descriptor would have been a part of an XML file that conforms to the EJB 2. 1 schema.

Not surprisingly, as the persistence unit is no longer defined by Java EE, no such name will be populated by the OSGi JPA runtime.

Introducing Ajax into a Java EE Web application has implications for separation of concerns (and therefore separation of developer roles).

Heroku's Java offering discards the full Java EE stack for a simple servlet-based approach, using Jetty as the embedded Servlet Container.

Cameron Purdy talked about the new features coming up in Java EE platform which includes the support for cloud computing.

Be very wary of going beyond the authentication mechanisms provided by the Java EE specification.

But some Java EE Web frameworks do not (yet) offer out-of-the-box support for the asynchronous communication model.

Be able to authorize access to domain objects of an application, not just Java EE artifacts.

This purpose of this article is to help you understand how to convert your existing Java EE applications into OSGi-based applications.

Flex and OpenLaszlo are similar declarative approaches to creating better-than-browser interfaces for Java EE applications.

One recommendation is to adopt Java Enterprise Edition (Java EE) as a suitable application technology for legacy transformation.

The client-side interceptors that some Java EE implementations support are instantiated and bound on the client end of an EJB.

One of the most common errors we see with Java EE applications, whether running in development, test, or production, are memory leaks.

One of the stated goals of Java EE 6 is to tackle these issues using three different techniques - profiles, pruning and extensibility.

While not a part of the Java EE standard, these frameworks are now a part of the Java EE community, and should be accepted as such.

Yes, at the moment we are trying to find a reasonable way to get the Java EE Web Profile TCK.

Instead, leverage the Java EE authentication model and Java EE roles in conjunction with your specific extended rules.

All OSGi services are automatically registered in JNDI and can be accessed in a manner familiar to Java EE components.

Create a new SCA JAR with a deployable composite that uses the Java EE archive as its component implementation using implementation. jee.

As different as Grails development is from other typical Java Web frameworks, you still end up with a Java EE-compliant WAR file.

In this article, we will concentrate on this latest version, referred to officially as Java EE 5.

The Java EE platform provides the essential system services through a container-based architecture.

With respect to this functionality, Little-G provides a complete Web container with all relevant and necessary Java EE features.

In one sense, Acegi is an attempt to apply OS-like access control lists to the Java EE environment.

He has been a professional software developer for the past 10 years. His expertise covers Java SE, Java EE, Oracle and application tuning.

Java developers have been placing an increasing amount of emphasis on providing a unit-testing harness around Java SE and Java EE code.

During the migration process we have encountered problems caused by differences in how the Java EE specification is interpreted by vendors.

Masoud: Security has not seen that much of change in Java EE compared to other services and components.

If you want the Java EE modules to access SCA artifacts, only then would the implementation need to be changed.

We've invested $12 million in technology that transforms Java EE into a multi-lingual platform.

A JAR file can contain common classes used by other modules and deployment descriptors for a Java EE application client.

we believe it is desirable to enable more of these technologies to cleanly layer on or plug in to Java EE application servers.

Resources used by specific Java EE applications can impose restrictions on the scalability of those applications.

Command-line scripts cannot, however, be used easily in all environments, and in particular do not integrate well with Java EE applications.

A fully scriptable server and web console that can manage single-node, clustered or cloud Java EE applications of any size on any container.

Enum, Class, and Collections are additional built-in types we've added -- look for some of these in Java EE 6.

Iterative development enbales you to gradually master all the moving pieces of Java EE.

This dependency injection model also enables unit tests to be run outside either a Java EE or OSGi runtime.

The Java EE web module, EmployeeListWeb, can be added to the OSGi application manifest as a dynamic web project.

For best runtime performance, Java EE programmers code queries to be as selective as possible.

With the loss of momentum from JBoss, the Java EE application server market now looks set to be a two-horse race between IBM and Oracle.

Since database nodes can be added very dynamically, it is hard for Java EE applications in Tomcat to use the database connection pools.

Plans are XML documents that describe additional Geronimo-specific properties; they replace Java EE deployment descriptors.

This technology's key goal was to lower the skill level for Java developers when developing user interfaces for their Java EE applications.

Groups are not part of the Java EE specification, but are an important part of almost every actual Java EE implementation.

A remote service interface to provide location independent synchronous Java EE client access to the service operations.

There is no, as of this writing, any vendor framework to adequately extend Java EE in these areas.

It's aimed at making Java EE project development easier by providing infrastructure code required by most of the Java EE application.

I will then show how the Java EE platform architecture addresses the difficulties in developing distributed applications.

Also, Java EE application packaging requirements have been simplified.

The MVC concept can be easily applied to form the basis for Java EE application architecture.

Java EE programmatic authorization partly alleviates the problem by introducing an element of dynamic authorization in code.

The OSGi support enables hybrid application development to leverage the benefits of OSGi modularity and Java EE programming model.

As Java EE and . NET have both bloated in complexity, Spring provides a critical foundation for simplified enterprise development.

There are a lot of frameworks and tools to help Java EE developers to scale their applications horizontally.

Application management: Install and manage Java EE applications and business-level applications.

Even more observant readers will have noticed that JSR-303 is in public review, yet it is not listed as a Java EE 6 component JSR.

The EJB binding enables SCA to integrate with existing Java EE-based applications by exposing SCA services as stateless session beans.

This section presents a few examples of the simpler programming models in Java EE 5 that lead to increased developer productivity.

The external SCA contribution using this Java EE archive as an SCA component implementation would look similar to Listing 3.

On one hand, the static nature of Java EE roles is a good thing for maintainability.

Since the client will use the standard Java EE programming model, the client needs to know the home interface of the SCA service.

The Java EE specification does not cover all the aspects of application deployment and configuration.

Consider the situation in which a Java EE application needs to access credit default swap data from a specific trade.

Security constraints are mapped to the Java EE roles needed to satisfy authorization in the descriptor itself.

Latency of operations affects Java EE applications more than operation throughput.

I'll then combine MVC principles with the Java EE platform to derive multitier Java EE application architecture.

The flexibility gained through programmatic Java EE authorization is limited in scope and bought at a high price.

His areas of interest include Web services, SOA, Composition Technologies and Java EE.

Another common requirement of XML-based Java EE applications involves updating persistent XML data.

There are now dozens of books and hundreds (perhaps more) of articles that provide insight into how Java EE applications should be written.

EAz is an Enum-based authorization extension for Java EE authorization.

Now that you are familiar with cloud application characteristics, let's look at a Java EE container structure.

For additional information, you can follow the Adding Dojo widgets to existing Java EE Web pages link in the Resources section.

This allows the Java developers to plug in technologies and frameworks into Java EE 6 implementations in a standard way.

The usage action link is for showing how this security realm can be used in your Java EE application.

Part 3, "Load balancing and failover, " will demonstrate the essential parts that comprise Java EE clustering: load balancing and failover.

This information is forwarded so that the Web container can map that certificate to a Java EE identity.

A new POJO-based programming model is introduced, which applies equally well to both the Java EE and Java SE environments.

Using resource references is a standard way to obtain centrally managed and administered Java objects in both Java EE and OSGi environments.

Theoretically, there is no problem in using Java EE for fine grained permissions.

In contrast, Java EE application servers cannot load-balance requests to stateful beans.

Hopefully, this information is providing you with the foundation you need to truly secure your Java EE environment.

JavaServer Faces 2. 0 is the first major update of the Java EE standard specification since it was first released back in 2004.

It is a lightweight Java application server aimed at implementing the Java EE Web Profile Specification.

The EJB service binding exists primarily to expose the SCA component to pure Java EE clients or callers.

As a result, developers almost always map Java EE roles to bundles of related permissions at a coarser granularity.

A proprietary service layer that facilitates easy component injection across all libraries enabling the Java EE 6 Web Profile.

As a result, developers almost always map Java EE roles to bundles of related permissions at a coarser granularity.

Transform incrementally with target platform components: Build scaffolding using architecture based on Java EE.

Understanding Java EE 5 concepts and database concepts will help you with the context of the tutorial.

These extensions would need to be resolved to their Java EE specifications.

You can view the latest Java EE certification results by visiting the Java EE Compatibility page.

In a Web 2. 0 context, mash-up applications frequently use services and feeds exposed through an SOA's service APIs (see Java EE meets SOA).

There is also work being done for the Java caching to be a standard and caching will be a feature in Java EE 7.

In this case, carry out large-scale conversion of all applications to Java EE components using automated tools.

In Java EE 6, JAXB offers improved performance through marshalling optimizations enabled by default.

Rewrite: Rewrite applications using Java EE approach.

The application's front end is a Web module using familiar Java EE servlet components.

He pointed out that there are a number of new specifications in Java EE 5.

Java EE applications that make use of asynchronous messaging standards and concepts reside on the Application layer.

The rich set of choices provided by the Java EE platform is daunting at first.

These are used in conjunction with the interaction policies on the bindings to authenticate and authorize access to the Java EE components.

The ZK CDI extension integrates the ZK programming model with CDI, allowing seamless development of Java EE 6 enterprise applications.

Use of Ajax also has the potential to impact performance of a Java EE Web-based application.

Well, we view Seam as the "missing framework" that should have been included in Java EE 5. 0.

Server platforms, such as WebSphere, can provide all the qualities of service that the Java EE specification demands.

To use the MQ messaging provider with a Java EE application, you must define one or more administered objects.

The three main goals for the Java EE 6 platform are flexible technology stack, enhanced extensibility, and ease of development.

Learn how two-phase commit transactions work in Java EE and rely on them rather than developing your own transaction management.

This feature is implemented in the RideStatistics class, which demonstrates Java EE 5 annotations in their simplest form.

This full version is targeted at Java EE 6, Spring and other enterprise environments. It will work with existing enterprise environments.

JCache is targeted for Java EE but this does not preclude its use with Java SE.

The Java EE server configuration implements Java EE management objects, such as a server domain and server object.

In Java EE where deployment units are mostly autonomous archives, this is not as difficult a problem to solve.

One is the Standard deployment descriptors file in the Java EE 1. 4 specification, another is the Geronimo specific deployment plan.

The developed application is run on one of the Java EE containers.

SCA also offers key features that Java EE and other technologies does not have - assembly and policy.

The use of authorization is supported in both SCA-enhanced and non-enhanced Java EE archives.

The early draft review of Java EE 6 suggested two pruning candidates.

One of the new features introduced in Java EE 5 was Java API for XML-based Web services (JAX-WS) 2. 0.

In open source, the community agrees it will do this one thing, and let's say this one thing is [Java EE] 5 compliance.

To begin, SCA's relationship with Java EE is multifaceted.

OEM has also changed its Management Pack Plus for SOA and Java EE.

The EJB specification is core to the Java EE platform.

The web. xml file is required by all Java EE web applications.

However there is still room for improvement in the Java EE 6 Platform.

When developing SOA or COA Java EE applications, it is best to consider services as operations on the business process model.

The larger problem is that Java EE programmatic authorization doesn't offer benefits commensurate with the complexity it introduces.

EJB 3. 1 specification will be released as part of Java EE 6 (scheduled to be out early next year).

The problem is that a Java EE role or an ad-hoc programmatic test on a code block is not well suited for fine-grained permission control.

Annotations in Java EE 5 also eliminate a lot of configuration code that prior Java EE versions require.

With application architecture in place, I will focus on Java EE application design based on object-oriented principles.

Most Java EE 5. 0 web applications will have both EJB3 modules for business logic and JSF modules for the web front end.

But the principles Java EE was designed on don't support the Web 2. 0 generation of applications efficiently.

This tutorial assumes you are familiar with basic Java EE deployment concepts, such as deployment descriptors and WAR archives.

An average of 6 minutes 10. 5 minutes redeploying the application [Source: The Java EE Container Redeploy & Restart Report].

Your EAR file should display an error because there are no Java EE modules.

But if there is true market demand, or the Java EE 6 profiles go forward, we'll probably create and support a Web Platform bundle, too.

Web 2. 0 applications have many unique requirements that make Java EE a difficult choice for their implementation.

Personally I have mixed feelings over the proposal of profiles in Java EE 6.

JSF 2. 0 also adds Java EE 5 style annotation-driven configuration to improve developer productivity.

Java EE 6 will need to consider additional Web services support.

Instead, to simplify the process, we import an existing Java EE sample project that is later migrated.

In the enterprise, platforms (such as Java EE-based servers) follow a server-centric mind set.

The hope is that Java EE 5. 1 will address the tier-integration issue to give us a comprehensive and standard dependency injection approach.

Flows B1-B4 show how it is reused by a remote rich client Java EE application.

Part 2 introduced the MockPrincipal as a way of encapsulating the non-Java EE registry concepts of users and groups (for example, actors).

The Servlet 2. 5 specification required by Java EE 5 is a maintenance release that includes minor improvements over the 2. 4 release.

For more InfoQ coverage on Java EE 6 release and the new features, check out this link.

So the basic difference is that unlike Spring tc Server, Siwpas is based on the Java EE standards instead of a custom framework.

Note that in Java EE 5 you can only inject the persistence context into managed objects such as EJBs, not POJOs.

The ability to use Java EE elements, such as application servers, is helpful but not necessary.

Java EE 6 is a lot simpler to use than the previous versions.

It is a fully certified server for Java EE 5.

InfoQ: How do the new security features in Java EE 6 compare with other security frameworks like Spring Security version 3?

The easiest way to satisfy this is to use the Eclipse Java EE.

For example, CDI makes it easier to build a Java EE web application that accesses a database with persistence provided by JPA.

EJB 3. 0 and JPA will undoubtedly be major selling points for Java EE 5.

A Java EE 1. 4 based Web service has been provided.

In order to modify this WSDL, open the Java EE perspective and the WSDL representing the binding for the particular service.

In fact it was the reason that the Apache Software Foundation voted "No" for the Java EE 6 Spec

The application is designed as a multitier Java EE application with three major logical tiers

Many implicit and explicit assumptions about scalability in the Java EE architecture are reflected in the benchmarks

An embedded mode allowing startup outside of a Java EE container

They are themselves client applications that employ the services of MDM Server Java EE components. These include

Implementing loosely coupled SOA applications using Java EE

Java EE web module (dynamic web project) with converted JPA OSGi bundle

Sample Java EE code for the update scenario

Other additions: The expert group proposed to include the following new JSRs in Java EE 6

Continue to use Java EE patterns in Seam

In addition, there is new support for Java EE 6 security standards, specifically