Learn about EJB ??

i'm a java developer and i want to learn, understand and work with EJB.
i'm looking for documents and links for ejb beginner.
thank you in advance

Did you try clicking on the Tutorials link on the upper left of this screen?

Similar Messages

About EJB 3.0 ?

i don't know anything about EJB (nither EJB 3.0 nor any previous version )
i want to learn EJB 3.0, but the final version of 3.0 EJB 3.0 has not been release.
i have heard that in EJB 3.0 all the old concepts have been changed.
a) will it be a good idea to start learning the latest version (version prior to 3.0)
and to get familiar with EJB and then later upgrade ?
or
b) wait for the EJB 3.0 and start learning EJB 3.0 only when its final version comes
please give me a helpful suggestion

This is a late feedback on your question but now JSR220: EJB 3.0 now is in its "Proposed Final Draft" stage.
http://java.sun.com/products/ejb/docs.html
I feel that starting afresh with EJB 3.0 is not a bad idea because there are some major changes in the way EJBs will be developed in future.
Knowing EJB 2.x is always a plus and you would certainly appreciate the new incarnation for its simplicity.
Hope this helps.
Cheers,
-_.

I have a new iPhone 5S. While trying to learn about it, I accidentally recorded a voice memo with no content. I cannot now figure out how to get rid of it. There is a banner across the top of my phone with this memo which I don't want. Help!

I have a new iPhone 5S. While trying to learn about it, I accidentally recorded a voice memo with no content. I cannot now figure out how to get rid of it. There is a banner across the top of my phone with this memo which I don't want. I have deleted it from iTunes but cannot get it off the phone. Help!

The banner usually indicates that the memo is "Paused." If you go back into voice memos, touch the word "Done" beside the big red pause button, give it a name, then it will show in a list. Touch the memo in the list then touch the trash can icon that should appear.

Network storage drive...where can I learn about these?

I have so many questions, and frankly, the answers I've seen looking (briefly, admittedly) around these threads scare me. Gee, Wally, what ever happened to Apple as the computer you didn't have to know computer programming to use?
Now, before you all get your panties in a bunch telling me that I'm responsible for knowing how to use my hardware, I know...and I do want to know.
So what I want to know now is how can I learn about the various types of "shares", and what they mean for hooking up a network drive for backup, etc.
I have a WD 1TB drive which I believe uses "SMB", whatever that is. It's got two folders on it currently, "Public" which I can access, and "WD Backup", which I can't. I also can't seem to use it as a Time Machine drive, which is what I want to do with it. And, or course, I can't re-format it, which I'd love to do as my wife hates the folder designations on it, and would like to have one folder called "iMac Backup" on it.
Answers which don't involve Terminal will get extra points, but I've dealt with Terminal before, so take your best shot. And ask for clarification if you need it. Thanks.

Unfortunately, networking and file-sharing aren't quite so simple in part because there's decades of history and dozens of companies involved in getting it into the current state. If you want dead-simple, you can get an Apple Time Capsule or AirPort with an external drive and be done with it. However, if you really want the most from network storage, you'll probably want to read up...
WD make a number of drive, some network-attached, some not. We'll assume that you have one of their basic consumer network-attached drives.
"SMB" stands for "Server Message Block" protocol and it was the local area network file-sharing protocol developed for Windows for Workgroups circa 1992 (it was later renamed CIFS - Common Internet File System - by Microsoft in 1996 because of the rising popularity of the Internet, despite the difficulty in getting it to work in anything but a small local network). SMB/CIFS is still widely used today for Microsoft Windows networks, though much of the equipment that serves those files are built on Linux or FreeBSD and not Windows.
Access to shares on an SMB server (such as your hard disk) is controlled through a configuration utility provided with the drive or via a web application built into the device (that you access through your browser). Consult your manual. Generally speaking, however, SMB servers offer different ways of identifying whether or not you can access a share: 1) based on the computer connecting (in which case, everyone is considered the same user), or 2) based on a username/password combo. Generally a server will only operate in one mode. Shared directories can also allow or deny "guest" access (access without a password). All of this should be configurable through the drive utility or web application which you access with your web browser. Generally, an SMB server can only operate in one mode.
It sounds like the Public directory is configured to allow guest access, and I'm guessing that "WD Backup" is a share that's password-protected and intended to be used with Western-Digital's own software of the same name. You should be able to add and create new directories as necessary through the provided utility or the web interface.
You are correct, you cannot use Time Machine with an SMB file-sharing service. Time Machine will require AFP (Apple Filing Protocol) or NFS (Network File System) support. Western-Digital only has 3 network drives that support AFP and Time Machine: My Book Live, MyBook World, and WD ShareSpace. OS X also has some basic requirements about the performance and capabilities of network storage in order to use it with Time Machine, so you really want to look for drives that state up front that you can use Time Machine with them (for example, WD World Edition: http://www.wdc.com/wdproducts/updates/docs/en/appletimemachine.pdf )
I'm not sure why you can't reformat the drive. This is supported on all WD products (though, if you've moved a bunch of data to it already, perhaps it would be a hassle).
You can do backups of your Mac over SMB, but it's complicated by the fact that SMB is quite old and isn't capable of storing information about the file permissions, ownership, etc. It will be reliable for data files, but not for applications, etc. There's a work-around, of course. You can create a disk image on the SMB share using Disk Utility (make sure you create an HFS+ image) and backup to that. If you go that route, I would suggest either Carbon Copy Cloner or SuperDuper to perform your backups. They are true backup tools, not versioning tools like Time Machine.

Where can i learn about Boot Camp

to all
i would like to learn about boot camp and the risks of puttiong windows on my mac. some things i just need on windows.
where can i read about it before i start to post dumb questions about virus software and the risk of virus, as i'm sure its been addressed somewhere..

thanks for the reply The Hatter... but its not a case of not leaving my comfort zone, but getting the full facts first for what i want to do. I;m quite good at leaving my comfort zone thank you..
currently trying to build a server at home with little experience
teaching myself HTML and Javascript and writing 5 websites on the fly
among many other things.. i just need to find out more about what i am doing before i do it so i understand what i am doing, and whether its the best use of my time.
my laptop most certainly doesn't sit on a shelf. its been around the world, to far flung corners of jungles, remote islands in Thailand and never leaves my side. Its on al day working and on all night processing. infact it almost drowned with me when i was caught in a violent storm going between islands in Thailand. Naturally i put the laptop somewhere safe before saving myself from going overboard.

HT201250 My backup external hard drive hasn't work since I insalled Snow Leopard. Bad:( I am still learning about my MAC and would just like to re-format the hard dive and set everything up again. I want to upgrade to Lion but can't untill I backup what

My backup external hard drive hasn't work since I insalled Snow Leopard. Bad:( I am still learning about my MAC and would just like to re-format the hard dive and set everything up again. I want to upgrade to Lion but can't untill I backup what I.

Read through the links here, calm down and take your time.
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents

To learn about ABAP Mapping

Hi,
I would like to learn about ABAP Mapping.
What is the importance of it and where it is applied?
Could you please guide me regarding this?
Thanks,
Raja Bala

Hi,
Go through the links,
http://help.sap.com/saphelp_47x200/helpdata/en/cf/21f2f2446011d189700000e8322d00/frameset.htm
http://help.sap.com/saphelp_47x200/helpdata/en/b1/8230a2d26611d4b2e90050dadfb92b/frameset.htm
http://help.sap.com/saphelp_47x200/helpdata/en/d9/b84508bc9411d4b2e80050dadfb92b/frameset.htm
Regards,
Azaz Ali.

Please suggest me the best way to start learning about Oracle Purchasing.

Hi,
I have started reading about Oracle Procurement. I have an over all idea of how ERP functions. Anyhow I am like a fresher to ORACLE APPS. Can you pleasesuggest me what is the best way to start learning about Oracle Purchasing.
Is it is throuhg user guides or some thing else..... can you please specify the references also.......
Thank you so much.

If you have a sponsorship, I would recommend taking classes with Oracle University. The other resources are documentation, functional and technical depending on what your interests are.
If you can load Vision database or access vision database (I think solutionbeacon offers a free account to login and play around), that will be another resource as well.
As you learn, join as much user groups like this one, and review all questions and answers in the discussions to understand and learn more.
Hope this helps.

Know about EJB.

Hi,
I dont have any idea about EJB and also how the EJB is differ from java beans.
Thanks in advance.

Romain - I think the answer to your question is that the information
identifying the user is passed into the initial context parameters. Weblogic
uses this to propagate the security context from the servlet container to
the ejb container.
cheers,
Markus
"romain" <[email protected]> wrote in message
news:3b0e8b23$[email protected]..
>
Hi
perhaps it is a dummy question but I didn't find any explicit answer.
I'd like to know how the ejb can know if a user belongs to a role.
For example if I want to access my ejb with a servlet, and this servlet isprotected
(access allowed only for group customer)
and in my bean's deployment descriptor I have protected one method withthe security
role customer)
What I am wondering is when the user is authenticated in the servlet as acustomer
and then try to access the method how the ejb knows that this user is inthe group
customer??
Is this information included in the http session or in the initialcontextcreated
in the servlet or somewhere else??
thanks for your help
romain

Send me link to learn about LSMW - Direct input

hi
Pls send me link to learn about LSMW - Direct input

Hi,
See below links
http://www.sap-img.com/sap-data-migration.htm
http://www.sapgenie.com/saptech/lsmw.htm
http://sapabap.iespana.es/sapabap/manuales/pdf/lsmw.pdf
http://66.102.7.104/search?q=cache:-DE9K5Tj0j8J:www.scmexpertonline.com/downloads/SCM_LSMW_StepsOnWeb.doclsmwdoc&hl=en
Steps to create
Create project, Subproject, Object (freely definable, for the purpose of
identification) Use create icon in the menu. For example
Project FI Finance
Subproject GL GL MASTER
Object GL GL Master
2. Continue F8, Now you will see series of steps. Select the step and execute
it (Ctrl-F8). In each steps, we will do some activity and save it. Then
system prompts for the next activity.
3. Maintain object attributes. By default the screen in display mode, Click
on pencil button to get into change mode. (This is applicable to upto the
activity assign files). In this screen select Batch input recording and
in Recording give name (freely definable) sal GL01 and click on Overview.
In this screen button (Recordings overview). Now click on create button for
recording. Give name and description, Now it will ask for the transaction
code, enter the transaction code and enter the data, the way you want fill in
the SAP screens/fields with legacy data. Then save the transaction. Now save
again to save the recording. After that you select the button default all,
then save it. And come back, now the cursor is on next activity.
4. Maintain source structures. Here create the structure by specifying name
(freely definable).
5. Maintain source fields. In this screen, click on copy fields (Ctrl+F8),
here select From data file(field names in 1st line). Now the system asks
for the file, select your text file, the system will copy the fiedls from
text file (tab delimited file. It contains field names in the first row).
Save it.
6. Maintain structure relations. Generally, we need not do anything here.
7. Maintain field mapping and conversation rules. Here put the cursor on the
field and click on source field, now you can see the list of field available,
from which select one which is equal to the field on which you out the
cursor. You can also write coding (ABAP Code) on any field for the purpose of
validation of data. Save it.
8. Maintain fixed values, translations, user-defined routines. Here also you
can maintain values, if required.
9. Specify files. In this screen, place the cursor on Legacy data, then click
on create button. The system asks for the file name, (the text file, in which
the legacy data is there), enter the file name, description and select Data
for one source structure (table), delimiter as Tabulator, file structure
as Field names at the beginning of the file.
10. Assign files. The file name you specified in earlier step comes
automatically here, If the file name does not come, then click
on assignment button and assign the file.
11. Read data. Here specify the transaction number (the number not less
than the number of rows in the text file). Execute it.
12. Display read data. Here, you can see the values, how the system read the
data.
13. Convert data. Here specify the transaction number (the number not less
than the number of rows in the text file). Execute it.
14. Display converted data. Here, you can see the values, how the system
converted the data, after interpreting conversion rules specified in the
earlier steps. This is the data that is actually goes into SAP, once the
Batch Input session is run.
15. Create batch input session. Specify the batch input session name for
identification and also select the keep session.
16. Run Batch Input Session. Select the batch input and click Process, from
there select foreground or background. Now the program runs and update
the data in to SAP. You can analyze the batch input for the successful
postings, errors.
Regards,
Omkar.

I am tryin to learn about color separation for silk screening

I am tryin to learn about color separation for silk screening

Color separation generally means using the CMYK color mode which is only available in the full Photoshop CS, not in Elements (RGB mode).

Want to learn about xCode

I bought my first Mac in february and I love everything about it. that said, I've been trying to get my hands on as much software as possible and I'm interested in learning about xCode. is there somewhere I can get started, right from scratch? I don't know much about developing software at all but I'm willing to learn.
Thanks

I posted this a while back. I don't know if it was helpful or not. It is a tutorial on C programming written by the author of a very good book on Motif programming.
How C Programming Works
Since you are just starting, my advice is to stay out of Xcode, just for little bit. Go through some basic "HelloWorld" tutorials. Learn how the terminal works. Learn a little bit about the process of compiling a source file into an executable. Xcode is very good, but it hides a lot of what is going on underneath. I think you would be much more effective with Xcode if you knew a little about that hidden stuff.

Source to learn about cell phone programming etc...

Hi, I'm new to forum. I would like to learn all I can about programming, modifying and messing with cell phones ( Droid X would be my preference but would like to learn all). Is there books, a site or anything else that I can buy to learn more? Getting my Droid early next week, I'm a bit excited can you tell!
Thanks Scott

Salps wrote:
I guess I didn't explain what I wanted to learn correctly. I would like to learn about how to set up, configure, root, and mess around with cell phones (Droid X).
Thanks Scott
To do those things, you will need to do an internet search for that. We cannot explain here because the forum moderators will remove the information before you can see it.
The owners manual is on the verizon site for download. That will help with the setup part.
Be advised that rooting your phone will nullify your warranty on the phone.

Want to Learn about J2ME

I am begineer in J2ME
I have a good knowledge of J2SE and some of J2EE.
so I want to learn about J2ME

device specific apis are available for several phones that do not support the WMA. http://www.wmlscript.it has j2me documents online. The site itself is in Italian, but there are documents in English also.

I want to learn about workflow any one can provide the guidence for me

i want to learn about workflow any one can provide the guidance for me

SAP Business Workflow can be used to define business processes that are not yet mapped in the R/3 System. These may be simple release or approval procedures, or more complex business processes such as creating a material master and the associated coordination of the departments involved. SAP Business Workflow is particularly suitable for situations in which work processes have to be run through repeatedly, or situations in which the business process requires the involvement of a large number of agents in a specific sequence.
Features
SAP Business Workflow provides a number of tools for defining and analyzing workflows as well as for monitoring operation.
The Workflow Builder is for displaying and making changes to workflows. You can make small extensions directly to the original workflows supplied by SAP, such as carrying out your own agent assignments or changing deadline monitoring.
There are several Workflow Wizards to support you in the definition of workflows, with which you can create specific parts of a workflow. The Workflow Wizard Explorer gives you an overview of the existing Workflow Wizards.
In order to make the functions of the R/3 Systems available to a workflow, you use business objects, which you can define and analyze in the Business Object Builder. These business objects are made available to the workflow in reusable tasks. The Business Wizard Explorer gives you an overview of all existing tasks.
You can also use SAP Business Workflow to respond to errors and exceptions in other, existing business processes. You can start a workflow when predefined events occur, for example an event can be triggered if particular errors are found during an automatic check.
Please follow the links,
http://help.sap.com/saphelp_nw04s/helpdata/en/04/926f8546f311d189470000e829fbbd/content.htm
http://help.sap.com/saphelp_46c/helpdata/en/c5/e4a930453d11d189430000e829fbbd/content.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/a1/172437130e0d09e10000009b38f839/frameset.htm
A good tutorial
http://www.thespot4sap.com/articles/Invoice_Verification_Automation_Using_SAP_Workflow.asp
http://www.sap-basis-abap.com/wf/sap-business-workflow.htm
http://www.sap-img.com/workflow/sap-workflow.htm
/people/alan.rickayzen/blog
/people/jocelyn.dart/blog/2006/06/19/why-use-abap-oo-with-workflow
a good book
http://www.sap-press.com/product.cfm?account=&product=H950
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/PSWFL/PSWFL.pdf
http://help.sap.com/saphelp_47x200/helpdata/en/4a/dac507002f11d295340000e82dec10/frameset.htm
http://www.workflowing.com/id18.htm
http://www.e-workflow.org/
http://web.mit.edu/sapr3/dev/newdevstand.html
Check the following PDF
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCBMTWFMSTART/BCBMTWFMSTART.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCBMTWFMDEMO/BCBMTWFMDEMO.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCBMTWFMPM/BCBMTWFMPM.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/PSWFL/PSWFL.pdf
Regards,
Sai

Learn about EJB ??

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