ATG vs other ecommerce java frameworks

HI ALL,
Can anyone provide some advantages of ATG over other ecommerce java frameworks like Websphere Commerce or Hybris ? Please don't give biased opinion due to Oracle forum
I looking for answer from folks whos having experience on other frameworks along with ATG.
Thanks,
gomez

I would recommend going over these useful posts:
http://www.linkedin.com/groups/hybris-vs-ATG-3803500.S.82636403
http://www.linkedin.com/groups/Is-Hybris-going-be-future-3803500.S.117455131
http://www.linkedin.com/groups/What-are-advantages-Using-Hybris-3803500.S.48359448
Peace
Shaik

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Java frameworks

There seems to many open sourced java framework. whichof these are worth studying or having knowelege in for job upgrades.

none of them will help you be a better burger flipper, so i suggest you study something else.

Java Framework Assessment

Hello.
I have been provided a third party Java Framework to assess. I need to grade it on things such as coding standards, design, documentation, functionality, etc. Needs to be a fairly comprehensive assessment.
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2. Have minimal if any configuration
3. Have an easy to use ORM
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After deleting java folders how can I create java framework manually.

macnewuser13 wrote:
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If choose Snow Leopard also same issue it will have?
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ADF Vs Other Java Frameworks???

Hi Guys,
Do we have any comparison chart available using which I can convince the client as to go for ADF for any custom Java application development.
I am using ADF from last 4 yrs so well versed with its strong points but still as u all know we need comparison and stats to leave a strong impression.
Cheers,
Kamal

John is right (John, I seem to be agreeing with you alot now!) - sometimes (unfortunately) decisions can be based purely on a protectionist agenda (is a Spring, as an example, Guru going to say, "heck, there Oracle guys are nailed it so I recommend ADF, and I suppose I better leave now since I'm no longer the $1000 a day expert!).
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2) It's development is driven by enterprise level applications - thats not to say other frameworks aren't but the fact that Oracle has bet the mortgage on ADF being at the core of its Fusion applications and also its products like Web Center, BPM, Business Intel, Enterprise Manager etc etc. The requirements of those applications drive the innovation in ADF. I think the fact that ADF is such a core in the ADF ecosystem has its own benefits in terms of development community, support, collateral.
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4) Related to the above 3 points, other Oracle products are build to work with ADF (or on it). So, if you want to adopt a business processing solution (like BPM) then its not a different tech stack to get that working with your ADF apps - its the same stack.
5) Productivity. Again this can be subjective since if you are used to e.g. Spring development then you may be more productive in that - but we have customer testimonials telling us that they were nearly 30% more productive with ADF than .Net - that point asside - producitivy was one of the key requirements from our own Fusion development teams when we were building ADF - if we could make them, even 10% more productive, then that was a hugely positive benefit for those development teams.
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Hi,
Just to share what I've found after surfing a bit more on this issue to promote more discussion on this area.
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Proposal for Java Frameworks

I've come up with a neat way of extending java's packages and inner classes to create the conceptual level of a "framework".
The technology changes are small, but the conceptual shift is huge.
A framework is a collection of classes that are linked together more closely than those in a package. Most importantly, frameworks can inherit from each other, in interesting dynamic ways.
Several languages, like Objective-C (which is more Java-like than C++ in all but syntax), allow in various ways for programmers to meddle in the hierarchy of other classes, in a way that in Java just isn't possible. The libraries from Omni use "categories" to seriously meddle with Mac OS X's Cocoa frameworks, and this is often cited as a strength of Cocoa programming. But with just two small changes, Java can leapfrog them all and become the undisputed leader of object technology.
Part 1: Syntactic Sugar
The next version of Java should add the framework keyword, as a synonym for class. So, a file called X.java:
package a.b;
public framework X {
     interface A { ... }
     abstract class B implements A { ... }
     public class C extends B { ... }
     public void main (String[] args) { ... }
     private int aMember;
}You can see, however, that it allows not only inner classes, but inner interfaces and abstract classes. Also, every member of a framework is static. This is important, since it allows the inside of a framework to behave like the inside of a package.
This is reflected in the next change, which the framework keyword makes possible in other files:
package a.b.X;
public class Y { ... }Classes can be added to a framework from other files as if it were a package. This is all just syntactic sugar for inner classes, which the compiler generates as X.class, X$B.class, X$Y.class, etc. This way, people can create frameworks of classes, which feel more coherent than packages. They are accesses from the outside in the standard way.
Part 2: Dynamic Inheritance
This change, however, requires an addition to the class loader. It covers an otherwise rare case that can occur with inner classes, and isn't specific to frameworks, but is required for their advanced behaviour. Luckily, it's more an addition than a change - it shouldn't break any existing code.
Imagine a class with inner classes, and another class that inherits from it and overrides some of them.
class X {
     class A {
          public static void write () {
               System.out.println("ordinary");
     class B {
          public static void write () {
               A.write();
class Y extends X{
     class A {
          public static void write () {
               System.out.println("salt and vinegar");
     public static void write () {
          B.write ();
}So what happens when you call Y.write(); ? At the moment, it looks from Y for a class B, and finds X$B. Then it looks from B for a class A, and finds X$A. So Y.write would produce the output:
ordinaryWhat should happen is that it should generate a new class Y$B. In this case, it would be a duplicate of X$B, but which was able to find Y$A and call its write method - as you'd expect.
The other half of this is to do with inheritance - and this is where purer languages like Objective-C currently have a slight advantage. But not for long, because we're going to create dynamically inherited classes - which is exactly what they can do, but we'll do it without having to introduce any strange new syntax or ideas, slotting it neatly into existing inner classes.
You have a similar situation to above, but with inheritance in the inner classes:
class X {
     class A {
          public static void innerWrite () {
               System.out.println("ordinary");
     class B extends A {
          public static void outerWrite () {
               innerWrite();
class Y extends X {
     class A {
          public static void innerWrite() {
               System.out.println("salt and vinegar");
     public static void write () {
          B.outerWrite();
}So now we have a classes X$A, X$B and Y$A. The write(); method is calling for Y$B - where does it get it from? At present, it just gets X$B. Instead, the VM should create a new class Y$B, that extends Y$A in the same way that X$B extends X$A. Since every method call in Java is already looked up dynamically, it shouldn't be much harder than duplicating X$B and switching its parent. This is really just a correction of how inner classes should work, rather than an exotic new feature.
A lot of you will either have gotten lost by now, or be wondering what the point is. The point is that we can take an existing framework, and add in behaviours at the root of the hierarchy, and then let those behaviours flow down through all the other classes. So we could take the Window class, and add the ability for all kinds of windows to have, say, nice fuzzy shadows. And suddenly every kind of window, from a dialog box to a pallette to a tooltip, will have nice fuzzy shadows.
So, potentially huge rewards, for very little personal coding effort.
Loose ends
The incredibly astute among you will have wondered about one last little point, when you want to extend classes in a framework. The compiler will need one last little patch to handle this syntax point:
framework X {
     class A {
          public int getNumber() {
               return 5;
framework Y extends X {
     class A extends A {
          public int getNumber() {
               return 7;
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When Sun created inner classes, they didn't realise what they'd unleashed. Here we take them to their logical conclusion, not by adding exotic special cases, but by filling in the small logical holes in what's already there.
     - the Shrink Laureate

The point is conceptual. Now that most people have
moved from functions to objects (and from pointers to
references) it's time to keep going and move to the
next step onwards.The question is, "Is this really a step forward?"
As has already been pointed out, Java provides interfaces to set up this kind of layout. As also was already pointed out, tying objects closely together this way breaks the OO nature of the design, thus reducing reusability.
So my answer to this question is "No, it's really not a step forward."
> There are always people who resist change. Lots of
people didn't like object-orientation. But how many
serious programs nowadays are written in C and
Pascal?You really don't want to know the answer to that question. An awful lot of batch programs are still written in C. And an even larger number of programs are writtin in VB.
Java has to keep evolving, or it'll get left behind -
which would be a pity, because it really is rather
nice.Yes, Java does need to keep evolving. The problem is that it needs to have its core features stable and bug-free before it can really expand and evolve. The good news is that because it's now several years old, it's far ahead of C# in this regard!
It doesn't. It has references. There's a difference.
referenceVsPointerThread.join();

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Hi all
I was taking a look to:
http://java.sun.com/developer/technicalArticles/javase/extensible/
Because I have to do a very extensible web application that a lot of different customers will use.
The main goal is to build a core system that will support a lot of modules around this core.
I want to let my developers plug and unplug (install/uninstall) modules on the fly, maybe with a web interface to let the system cut any connections to the application.
One of the requeriments is to let developers update one customer modules while the application is running. Of course the others customers should notice nothing or almost nothing.
I mean, I want to do almost the same thing that tomcat does with the .war files but inside a already deployed application.
Can someone point me in the right direction?
I want to use the Spring framework, tomcat and Hibernate.
Can remoting help here?

But my question is: How to implement a different
LogManager for each container application.To quote the very first words of the API documentation for LogManager: "There is a single global LogManager object..."
How can I have several instances of the LogManager in
the same VM?Obviously you can't.
Now go back to your real problem (which is, I think, that you want each context path to have separate logs) and see what the API documentation can do for you. The very first words of the documentation for Logger are "A Logger object is used to log messages for a specific system or application component." So I would suggest you need to implement a different Logger for each container application.
PC²

EJB DC, where to put other public java classes?

I'm wondering what the best way to structure my code is, in this context:
I have an EJB DC that utilizes some custom Java classes that need to be available to clients. For example, the business methods in the EJB may return instances of said custom code classes.
By default, the EJB DC contains a compilation public part called 'client', but you can't add any other entities to it, as you'll remove the default entity. I could manually create the entities in the public part, but I think when I add another EJB to the DC, it will overwrite the entities that I've created....either that, I'm messing with the default config, something I'm not interested in doing. In fact, this [page indicates that you should NOT alter the generated PPs:
http://help.sap.com/saphelp_nw2004s/helpdata/en/02/6755bd296ade42931646f869b1fd15/frameset.htm
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Hi Ken,
I think you've found it.
I'm not so sure about DC projects, but in the plain J2EE case I would recommend to put all common (public) classes in a separate component (application library) and make references to it both from the EJB application as well as from its clients. This library would also contain the EJB interfaces, so there would not be a need for direct reference from the clients to the EJB application.
I think with DC public parts you are achieving almost the same.
Cheers,
Vladimir
PS: BTW, probably you would be able to get more thoughts on this in the SAP NetWeaver Development Infrastructure (NWDI) forum.
Message was edited by:
Vladimir Pavlov

Use Adobe Reader (or others) in Java Swing

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Learn how the Tomcat class loaders work and how to deploy Web apps properly.
PATH doesn't affect Java at all. That's an OS environment variable. If you meant CLASSPATH, that'll do you no good, either, because Tomcat ignores any CLASSPATH environment variable.
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ATG vs other ecommerce java frameworks

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