Basic JNDI questions, mostly

Below are some questions I have in regards to EJB development and deployment. Mostly
these are JNDI questions, with some WebLogic ones mixed in. I have a web app that
I created, and which works, but I’m not exactly sure why it works. I’d like answers
to these questions, but I’d also like to know if this set of questions indicates
a particular set of training that I’m missing, and, if so, where I could get it.
Q: In an EJB method that uses another EJB, when do I use “java:comp/env/ejb/PersonBean”
versus “ejb/PersonBean” versus just “PersonBean”? The web app that I wrote uses
“PersonBean” and it works.
Q: Why do we have to use PortableRemoteObject? Why can’t we just directly cast
it to “PersonHome”? How does it know to narrow the name “PersonBean” to the home
interface, and not to the remote interface instead?
Q: For the DataSource, I’m looking up “java:comp/env/jdbc/bahiawebDB” in the code
instead of just “bahiawebDB” like I do for the EJB. Why the inconsistency?
Q: In “ejb-jar.xml” the “ejb-name” is just “PersonBean” instead of “ejb/PersonBean”,
but my “res-ref-name” is “jdbc/bahiawebDB”. Why?
Q: On the WebLogic server admin tool, under “mydomain > JDBC Data Sources”, should
my data source Name or JNDI Name be “jdbc/bahiawebDB” or just “bahiawebDB”? Why?
Q: On the WebLogic server admin tool, under “mydomain > JDBC Data Sources”, what’s
the difference between “Name” and “JNDI Name”? Who uses “Name”? Is it just for
humans? Is the JNDI name supposed to exactly match the “res-ref-name” in the ejb-jar.xml
file?
Q: On WebLogic, why are Data Sources and Connection Pools separate? Why would
you want to map multiple Data Sources to the same Connection Pool?
Gary Kephart
New Century Mortgage
[email protected]

Similar Messages

4 Basic JNDI questions I have - please help :-)

Hello JNDI lovers and haters as i feel at the moment :P
Question 1: I get a warning message from my eclipse 3.3:
NamingEnumeration is a raw type. References to generic type NamingEnumeration<T> should be parameterized LDAP MainWindow.java line 133 1184255055215 3297this warning refers to this code line:
NamingEnumeration enm = ctx.search(baseDN,filter,controller);What does that warning mean and how can i make my code proper so i get no warning?
Question 2: I have nowhere in my JNDI book found any hint that i must close an NamingEnumeration instance. So for what is this close() methode and if i have to close an instance of the NamingEnumeration class, when do i have to use it exactly??
Question 3: When i make 2 Context searches like ctx.search(); etc... do i have to use everytime a new ctx instance for every search i do ? like ctx1.search(), for the first search and ctx2.search() for the 2nd search??
Or can i use ONLY 1 instance of a Context class for several searches ? Logically one Context should be enough as i have only one entry point for my ldap tree and its always the same root...
Question 4:
Why does my Duke stars not decrease do i have unlimited of them? well not so a serious question as Adler_Steven deserves them all :D
Would be very pleased guyz if you could help out a JNDI wannabe pro ;-)
EDIT:
i found this information on the sun forum:
javax.naming.NamingEnumeration enum = ctx.search("",satts);
if ( enum.hasMoreElements() ) {
SearchResult firstresult = (SearchResult)enum.nextElement();
attrs = firstresult.getAttributes();
} else {
throw new Exception("No Entries returned");
enum.close(); // without this, ctx.close() did not release the thread
ctx.close();as you can see above the enum is closed and the guy say s if its not closed you might get trouble as the thread gets not released ?? BUT i have seen so many code examples where the ppl dont close the enum instance ?? HOw This ?

ok thanks

Basic iPhoto questions:

I have some Basic iPhoto questions before I start using the program:
- does iPhoto apply any compression or change images in any way when they
are imported?
- after images are imported, can the original source folder of images be deleted off of the mac?
- can Quicktime files exported from iPhoto be viewed on a Windows computer?
- can iPhoto handle large resolution images that might be as large as 8-15mb each? does it display them quick? are there any known file size issues?
Thanks!!!!

kat.
Is there a way to use iPhoto on a network so other users can read and possibly write to an iPhoto library on a networked mac?
iPhoto is a consumer level photo organiser, not a server. It's possible to share photos but libraries are very difficult and fraught with the danger of database corruption. Some have reported success.
Is it possible to password protect or secure certain images in the library so they can not be seen by anyone?
No. The best I can suggest there is to create a second library and store it in a secure area like a protected dmg. But remember, you can only have one library open at a time.
After photos are deleted from iPhoto, are there any remaining traces or cached files anywhere other than the trash
If you delete photos from iPhoto and empty the iPhoto trash then the pics are removed from the Finder as well. They remain as findable as any other deleted file from that point, which is, very, if the searcher in knowledgeable.
Regards
TD

Object class deployment - Basic form question

OK, I subclass calendar object from Oracle provided standard
object class. What do I need to deploy to use this form now
apart from calendar.pll and my fmx. What about the object class
from which I sub-class. Do I need to compile and deploy that
also? How will form resolve this on run time the parent object
class as I really did not copy, just sub class and we do not
deploy original class? Basic form question. Thanks.

You can set the "help" property on the field (which gives you the little "information" icon link beside the field).
You could also try adding another field of another class above or below:
<Display class='InlineAlert'/>
<Display class='ErrorMessage'/>
<Display class='HtmlPage'/>
..etc
-Rob

Adding Date/Time Field + X Number of Days - Basic Calculation Question

I am assuming this is a basic calculation question. New to Adobe LiveCycle Forms.
I have a simple form containing a table. The table appears as such:
Text
Formatted as Date/Time Fields
Header 3
Monday
user wil choose the beginning date (Date/Time) this is DateTimeField1
Tuesday
this should calculate DateTimeField1 + 1
Wednesday
this should calculate DateTimeField1 + 2
Thursday
this should calculate DateTimeField1 + 3
Friday
this should calculate DateTimeField1 + 4
Saturday
this should calculate DateTimeField1 + 5
Sunday
this should calculate DateTimeField1 + 6
Calculations are performed after the date is chosen for Monday. My mind tells me the simple calculation of DateTimeField1 + 1 is not going to work (and in fact doesn't!) as it needs to change Monday to a number first. I saw on another thread the following:
Num2Date(Date2Num(Date(DateTimeField1), "DD.MM.YYYY")+7, "DD.MM.YYYY")
Thought this was going to get me close. No cigars though!
Any quick help is greatly appreciated. And since I am new to this, details about what needs to be changed would be great too!
Thanks

Here an addition for you date field.
This FormCalc script in the exit:Event will check it the selected date is on a monday.
If not it will go the days back until the last monday.
var Selection = Date2Num($.formattedValue, DateFmt(2))
var WeekDay = Num2Date(Selection, "E")
var NewDate
if (WeekDay eq 1) then
          NewDate = Selection - 6
elseif (WeekDay eq 3) then
          NewDate = Selection - 1
elseif (WeekDay eq 4) then
          NewDate = Selection - 2
elseif (WeekDay eq 5) then
          NewDate = Selection - 3
elseif (WeekDay eq 6) then
          NewDate = Selection - 4
elseif (WeekDay eq 7) then
          NewDate = Selection - 5
else
          NewDate = Selection
endif
$ = Num2Date(NewDate, "EEE DD.MM.YYYY")
Hope this helps, too.

Basic Exporting Question

My main question is a very basic exporting question, but here is a super-condensed explanation of my big-picture goal for context:
Large (~450 MB) aiff on CD --> trim w/ Quicktime --> small (~16 MB) MP3 in iTunes
I would like to take an audio file (aiff) that is approximately 450 MB and export it from Quicktime and in doing so, reduce the file size and convert it to MP3. When I simply try to export it, it doesn't ask me about what size I want, nor does it give the option of MP3 formatting.
I have figured out how to reach my goal, but it's a mess. After I make my trims in QT, I have to:
1. select "share" instead of "export".
2. It asks me what size I want and I select small.
3. The file is then exported as a Quicktime movie into Mail and the size is reduced from 450 MB to about 20 MB.
4. I then have to "right-click" on the attachment in the email that is created,
5. save the attachment,
6. discard the email,
7. import the file into iTunes, and
8. create an MP3 in iTunes to finally arrive at my goal.
This seems like a ridiculously convoluted process to change a large aiff to a small MP3 and put it in iTunes. Any suggestions?

Thanks. I guess the basic answer to my question is that it can't be done in one or two fell swoops. The problem is that it starts on a burned disc, and I need to make edits to it before it ends up in iTunes (to be eventually used in iWeb). I was hoping to avoid juggling back and forth between iTunes and QT. I either would have to send it back to QT to do the edits after -->iTunes-->mp3, or import the large file from the CD to QT, make the edits, save changes, import large file to iTunes, convert to mp3.

Using the Assets panel [was: The most basic stupid question on here]

I am very new to web design, self taught on sites like GoDaddy and Microsoft Office Live, but there's no access to root directory and adding affiliate banners won't work. So here I am. Problem #1 so far is how do I get stuff into my assets. I've messed around for a while w/ no success. It can't be that hard. Someone out there please give this "newbie" the instructions for getting text, images and stuff from my computer into the assets box on Dreamweaver. I'll have nightmares about "dreamweaver" till I get this figured out. Thanks a million in advance for answering such a basic (almost stupid) question

There are no stupid questions around here, but a more descriptive subject heading would be appreciated in the future. "Assets Question"
Define a Local Site folder In Dreamweaver. Without this critical first step, DW cannot manage assets for you.
Start by working through this tutorial. Lots of good info.
Creating your First Website in DW C4 -
http://www.adobe.com/devnet/dreamweaver/articles/first_cs4_website_pt1.html
Nancy O.
Alt-Web Design & Publishing
Web | Graphics | Print | Media Specialists
www.alt-web.com/
www.twitter.com/altweb
www.alt-web.blogspot.com

Basic JNDI et EJB question

Hello,
I have a client accessing an EJB deployed in an EJB container.
import javax.naming.*;
Context ctx = getInitialContext();
DemoHome dhome = (DemoHome) ctx.lookup("MaDemo.DemoHome");(getInitialContext returns a Context object and there is no directory server on the machine).
My questions are as follows: Why don't I need a directory server? Am I not using JNDI here? Don't you need a directory server when you use JNDI?
Thanks in advance,
Balteo.

in short no you don't always need a directory server. You use JNDI with JMS operations and there is no directory server associated with that. JNDI (Java Naming and Directory Services) has many uses.
One such use is with JMS,and yet another is with LDAP. Seems like you are just doing a lookup with in the namespace.

The most basic midi question goes unanswered..

I know. I just must be missing this somewhere, but I cannot find the answer.
I'm using a drum samples in Logic 8. My drummer uses a AlternateMode "TrapKat" as his triggers of choice.
However, we can't get logic to recognize this instrument and record midi using its functionality. In fact, we can't even get a level reading when the Trapkat is hit. We're using a 002 interface as our "sound card" / control surface and have the midi cable connected from the TrapKat, directly into the midi "IN" on the 002.
What pray tell are we doing wrong?
Many thanks in advance for your help.

So basic in fact, that 4.23 minutes later, my dog answered it, and we're all set
(nevermind)

Basic JNDI Lookup Config Question

I have the following in a jndi.properties file:
java.naming.factory.initial=
_ com.evermind.server.ApplicationClientInitialContextFactory
java.naming.provider.url=ormi://localhost/<applicationname>
java.naming.security.principal=admin
java.naming.security.credentials=123
It is expecting what for an <applicationname>?
The name of the client application(The client that invokes my session bean)?
The name of the package where the client exists?
The name fo the database schema?
Any answers?
Thanks,
Jim

Also, is there a way to configure these properties using the Sun App Server 7 in the Sun Studio directly?
Thanks.

The most BASIC PHP question imaginable.

I am working my way through the Lynda.com PHP Essential Training.
I have MYSQL, Apache & PHP all installed an working.
If I type this code into textedit, and save it as test.php, and view it in Safari, then every works as expected:
<head>
<title>PHP test</title>
</head>
<body>
<?php echo "Hello World!"; ?>
</body>
</html>
and I see "Hello World!" on the screen.
If I create a new PHP file in Dreamweaver CS4 and enter
<?php echo "Hello World!"; ?>
I see that the code looks pretty much identical in the code pane, but when I run it, instead of seeing "Hello World" I see: <?php echo "Hello World!"; ?>.
Clearly, there is something (presumably to do with the server side, that I am not setting properly, BUT WHAT??? I am absolutely pulling my hair out over this.
Any suggestions??
Thanks,
Peter

This is a duplicate thread. Now locked.

Switching to mac, basic noob questions

Hi, I'm new to this. I have some xmas and bday money and i need a laptop. I have two desktop PC's (one XP and one Vista) and have had PC's all my life. I feel like switching it up and giving macs a try, it would make my purchase more fun. I've done some research and i think i want the black macbook with 2 gigs of ram. Here are some questions i need answered before going much further.
1.) I notice that every 6 months new macbook models come out. I also noticed that the last three (at least) have been very similar in hardware. Is it common that the new macbook probably coming out in the summer will be unvieled at macworld? If there is a big difference i might wait, i don't want to get the last model in a product line. Id the difference is another slight processor speed increase i won't bother waiting. As far as i know this isn't available information yet, so i'm just looking for a 'usually they do/don't' type of response.
2.) Is the apple care support really all it's cracked up to be? I'm not about to let my purchase go to waste on me, but at the same time if the support is rarely needed i might not bother. I'm a student and don't have too much money to blow if it's usually a waste. I generally like getting the warrenty for my things, i'm just looking for a more experienced opinion.
3.) Are the Apple stores in the Best Buys independent from Best Buy, or are they the same? I would like to put the 900 or so dollars i can down on this and put the rest of my best buy card to pay off over the next few months.
4.) If they're the same, does anyone know if the apple computers fall under best buy's "no interest for blank months of purchases over black?"
thanks!

Hi Thomes08!
Welcome to Apple Discussions.
It sounds like you're in the process of making an excellent decision to go with a 2.2GHz "BlackBook" and up your RAM to 2.0GB. I think you'll be extremely pleased with your purchase.
1.) Unfortunately, these forums are not designed to be used as a means of product speculation. Matter of fact, it's against the Terms of Use (of these discussion pages) to speculate on upcoming product releases. We'll have to wait the 2-weeks for Mac World to see what comes out, there's no way to have any insight into the excitement that Steve's Keynote brings to technology.
2.) I'm a big fan of AppleCare, mostly because it ensures peace of mind over the reliability of my product for the 3-years that it'll serve as my primary machine. While, I've had multiple Macs last beyond 3-years, I also typically swap it out for the "latest and greatest." Especially with a portable and your student discount. The cost of APP for a MacBook is a relatively "no brainer" especially if you consider the cost (for parts & labor) of even the most basic repairs if the machine falls out of warranty.
3. I'm not entirely familiar with the logistics of the agreement that Apple has with Best Buy, so I'd rather not speculate. I do know that Apple also offers financing options through BML (Bill Me Later) and Juniper Bank, but I'm unfamiliar with the specifics of a split payment. Buying an Apple product through Best Buy still entitles you to all the same "benefits" of ownership, so there's no advantage (or disadvantage) to shop @ Best Buy.

Premiere Elements 7 Basic Editing Question for DV

Hello all,
I have PE7, a Q6600 quad-core, and Windows 7 64bit.
I have captured about 6 hours of Standard Definition 16:9 DV footage from my church's grand opening ceremony. Video was captured from an old Pana PV-GS320.
The church wants a dynamic video to be produced from the captured footage (60 minutes at the most in length). I plan on doing many different effects including semi-transparent video layering, picture in picture, inserting photographs, and inputing audio clips from the ceremony. The final product will be a standard definition DVD disc.
I've done some research regarding how DV is interlaced and output for DVD should be interlaced (unless I'm wrong in that conclusion, let me know). I also know that doing heavy editing with interlaced footage (slowing/speeding footage, zooming in and out, rotating, multiple layering, etc) may create flickering and "mice teeth" in the video. I've also searched through these forums and keep on running into HD questions/solutions... I guess I'm asking an old question that was probably answered long ago when DV tape ruled the world.
QUESTION 1:
So, if I may ask, in order to get the best results, should I prepare my raw footage in PE7 before editing it by (1) by deinterlacing it? (2) exporting it as progressive? (3) both? (4) leave it alone and begin editing away? or (5) am I missing another option?
QUESTION 2:
Also, what resolution would be best to import the photos into the project?
I know the best way to work with any video is to make as little changes as possible to it, but this is unavoidable in my case. No one wants to sit through 6 hours of video...
Thankyou very much for reading my questions and I really hope you have some time to answer it! Thanks for any information! I really appreciate it!
-141rockwell

Relax, rockwell. You're making it all unnecessarily complicated.
If you've captured your video as DV-AVIs over a FireWire connection, you won't get "mice teeth" in your final product. The program is designed to work with interlaced video and create interlaced DVDs. The results should look virtually as good as the original footage! You can't damage video with "excess editing."
Just trust the program to take care of the technical issues. You can concentrate on the editing.
As for any photos you want to add, you'll get the best results if they're no larger than 1000x750 pixels in size, per the FAQs to the right of the forum.
http://forums.adobe.com/thread/431851?tstart=30
Meantime, if you're looking for some basic help with the program, be sure to check out my free 8-part Basic Training tutorials at Premiere Elements support site Muvipix.com.
http://forums.adobe.com/thread/537685?tstart=0

Basic Measurement Question

Hi
This question seems like a simple one, but I can't seem to find an answer. We run benchmark tests of our application, and when we report the results, our customers usually ask "When you say you processed x number of business transactions, how many Oracle inserts, updates, selects, and delets does that amount to ?".
Statspack shows a lot of sophisticated measurements, but I haven't been able to figure out how to answer that basic question.
Any ideas?
Thanks
Tom Hogan

A benchmark is a baseline for which a future comparison. Benchmarks taken in the same manner using the same procedures can be compared. The absolute values do not matter so much as the relative values which are most useful when compared over time.
This is true even when all the details of what makes up a derived value is not known so long as the method used to derive the value is known and consistent over time. Obviously the more that is known the more uses the results can be applied to, but knowledge of every variation is not a requirement for obtaining useful information.
Still it is important to benchmark only useful factors and for later analysis it may be necessary to store information about important details used in deriving the benchmark value. But again it is not necessary to know or save information about all the details.
-- Mark D Powell --

Basic PBE questions and clarifications

I have some basic questions about PBE and java.
My first question is how do I determine the size of the derived key that will actually be used? Do we have any control over that? I guess that the password strength is probably more important than size of derived key in PBE(?), but I'd still like to understand what's happening.
Following on that - do the characteristics of the initial PBE password have any bearing on the strength of the encryption (ie the size of the derived key), when using PBE?
Finally with standard install of Sun 1.5 JRE, the security jurisdication policy files prohibit the use of PBEWithMD5AndTripleDES. However the Sun JDK from 1.5 supports PBEWithSHA1AndDESede and this appears to work with the standard (strong), policy files.
This being the case (and please correct if this is wrong), what is the difference between TripleDES and DESede - I thought they were analogous. Why is one PBE scheme available with standard (strong), 1.5 policy files and the other prohibited?

peckham wrote:
Thanks for response - cleared some things up. My focus now is on why PBEWithMD5AndTripleDES fails with 1.5 strong policy files whereas PBEWithSHA1AndDESede appears to work.
You said:
... The only difference I can imagine is that TripleDES could use the two key version which has only 2*56 bits for a key but this would still require the 'unlimited strength files.To clarify do you mean to say DESede could use the two key 2*56 version? I ask because DESede is the one that seems to work so I would expect that to be the one using the smaller key size.
Could you also explain why you would expect 2*56 version to require unlimited strength files - I thought 128 bits was the limit for DESede keys with Strong Jurisdiction Policy files.I thought the threshold was lower than 128 bits but I can't be certain.
>
>>
Why is one PBE scheme available with standard (strong), 1.5 policy files and the other prohibited?As I said, they are they should be the same.
Note - there was a bug in earlier JRE whereby if one used the key.getAlgorithm() method to use to create a Cipher i.e.
Cipher cipher = Cipher.getInstance(key.getAlgorithm());one always got PBEWithMD5AndDES. This, of course, does not require the 'unlimited strength' files.
I found [this posting |http://forums.sun.com/thread.jspa?threadID=5129170&start=0&tstart=0] that you (sabre150), contributed to back in 2007. I've modified the JDKIssueTestCase to use:
Cipher cipher = Cipher.getInstance(algorithm);Running this under 1.5 with 'strong' policy files PBEWithMD5AndTripleDES fails but PBEWithSHA1AndDESede succeeds. Here is the output:
JVM Name: "Java HotSpot(TM) Client VM" Version: "1.5.0_10-b03" Vendor: "Sun Microsystems Inc."
OS Name: "Windows XP" Version: "5.1" Architecture: "x86"
Sun JCE: [SunJCE version 1.5] Info: [SunJCE Provider (implements RSA, DES, Triple DES, AES, Blowfish, ARCFOUR, RC2, PBE, Diffie-Hellman, HMAC)]
Algorithm: [PBEWITHMD5ANDTRIPLEDES] Max key length: [128]
Result Failed: [java.security.InvalidKeyException: Illegal key size]
Algorithm: [PBEWITHSHA1ANDDESEDE] Max key length: [128]
Result Encrypted: [-70, -45, 57, 35, -29, 5, -113, -118, 102, 14, -119, -81, 125, 8, 56, -8]
Algorithm: [PBEWITHMD5ANDDES] Max key length: [128]
Result Encrypted: [-56, -33, -40, -75, -41, 48, -39, 83, 122, 88, -70, 27, -69, 55, 85, -18]
Algorithm: [PBEWITHSHA1ANDRC2_40] Max key length: [128]
Result Encrypted: [50, 66, -63, -84, -123, 13, -113, 77, 67, 80, -66, -70, 90, 23, -53, 13]
Interesting.
So I'd still like to know what is happening here especially in light of the bug highlighted in thread 5129170 - if I use PBEWithSHA1AndDESede without unlimited strength jurisdiction files what encryption strength am I actually getting? No real idea. Research is required.
>
I know that most people won't care about this but I work in a monolithic organisation where 1.4 is still the default JRE. There may be other unfortunates out there in similarly constrained environments so this might still be of some benefit.:-)

Basic JNDI questions, mostly

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