Local references...some questions...

Hi All,
1)
i have a native method, which i'm calling frequentely. In this method i return one object to Java language....Weird is, if i put -verbose:jni parameter to JVM ....then i receive a lot of allerts ... that a local references count has stepped over the maximum limit 16....
According to this, i put a env->EnsureLocalCapacity(1) call
before
return env->NewObject(.....) statement
and problem wen't away....But i don't understand this, i assumed that JVM release any local references returned to Java....?????
2) Is this code correct???
env->EnsureLocalCapacity(1);
env->PushLocalFrame(1);
jobject obj = env->NewObject(....) // no local references are created here..
obj = env->PopLocalFrame(obj);
return obj;
Thanks ....

efrizzell --
The use of local base calendars in a Project Server environment is strictly the decision of each organization. There are certainly valid reasons for permitting them, such as when PMs need to be able to create their own custom local base calendars.
There are also valid reasons for denying their use, so that every project must be scheduled using a valid and tested base calendar created by the Project Server administrator.
Several years ago, I worked with an organization that initially forbid the use of local base calendars. Because of this, the Project Server administrator was hit with dozens of requests for custom enterprise base calendars. He found the process
of creating and maintaining enterprise base calendars to be so much work that he gave up trying to control it, and enabled the permission to allow PMs to create their own local base calendars.
If your organization allows the use of local base calendars, the base calendar will be stored in the project in which it was created. Hope this helps.
Dale A. Howard [MVP]

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Some questions on versioning and synchronizing metadata

Hy all!
I am quite new to warehousing and Oracle Warehouse Builder, and so i would have some questions regarding on some common issues. I would appriciate if you guys would who have experience in this domain to share some good practice knowledge :)
I am using OWB 10.2
So first of all i would like to know if you have some proposal of the way of versioning control and synchronizing projects between team memebers when working on a bigger project, team memebers that don't work on the same repository (cause i saw that OWB has an integrated multiuser support for handeling object locks and user sessions).
I saw that a way of migrating data from one place to a nother is using the import/export options integrated in OWB. This creates mdl files wich are some kind of "dumps" of the metadata informations, but the thing with these mdl files wich i don't think is a good way to synchronize is that first of all the .mdx and .xml files contained in the .mdl (wich is kind of a zip) contains many informations in it (like creation date, some timestamps, etc) wich are always updated when exporting, and if synchronizing these files maybee using CVS, we always will get differences between the files alltough they would contain the same thing, only timestamps changed.
Then a nother issue with this, is that we could have 2 alternatives: dump the whole project, wich is odd to have to synchronize a single file between users, especialy on a big project, then the orher way would be doing for each object from the project (each mapping, each table, etc) an separate .mdl filem then to synchronize each file of each object, wich will be unefficient on reimporting each file in part.
So please if you can share the way you work on a big project with many implementers with OWB, i would really appriciate.
A nother thing i would like to know is: is there a way to generate from an existing project (like one created with OWB) the OMB commands dump (maybee in a tcl script)? Cause i saw that the way the exeprienced users implement warehousing is using TCL with OMB language. I downloaded the example from oracle for warehouse project, and i saw that is entirely made from tcl scripts (so no mdl file involved). And this i think would be nice, to have the OMB commands generated from an existing projects.
I see this OWB projects like a database wich can be built up from only OMB commands and OWB a graphical tool to do this (same as constructing a database only from DDL commands or using SQL developer to do this), this is why i am asking about a way of dumping the OMB commands for creating an OWB project.
Please give me some advices, and correct me if i sad some dumb things :D but i really am new to warehousing and i would really appriciate if you guys with experience could share some informations.
Thank you verry much!
Alex21

Depends. Having everyone working on the same project certainly simplifies things a lot regarding merging and is generally my preference. But I also recognize that some projects are complex enough that people wind up stepping on each other's toes if this is the case. In those cases, though, I try to minimize the issue of merging changes by having common structural objects (code libraries, tables, views, etc) retained in a single, strictly controlled, central project schema and having the developer's personal work areas reference them by synonym, thus being unable to alter them to the detriment of others.
If they want to change a common object then need to drop their synonym and make a local copy which they can alter, and then there is a managed process by which these get merged back into the main project schema.
This way any changes MUST go through a central schema, we can put processes in place to notify all of the team of any impending changes, and can also script updates across the team.
Every hour a script runs automatically that checks for dropped synonyms and notifies the project leader. It especially checks for two developers who have built local copies of the same object and notifies each that they need to coordinate with each other as they are risking a conflict. When a structural change is submitted back to the central shared schema, it is added to a batch that is installed at end of business and a list of those impending changes is circulated to the team along with impact analysis for dependencies. The install script updates the main schema, then also drops the local copy of the object in the developer's schema who made the change and re-establishes the synonym there to get back to status quo for the change monitoring. Finally, it then updates itself in all of the developer areas via OMBPlus. So, each morning the developers return to an updated and synched environment as far as the underlying structure.
This takes care of merging structural issues, and the management of the team should minimize other metadata merging by managing the worklist of who is to be working on a given mapping or process flow at a given time. Anyone found to be doing extraneous changes to a mapping or process flow when it is not in their job queue without getting pre-approval will be spoken to VERY firmly as this is counter to policy. And yes, OWB objects such as mappings are then also coordinated to the central project via import/export. OMBplus scripts also propogate these changes daily across the team as well.
Yep, there is a whole lot of scripting involved to get set up.... but it saves a ton of time merging things and solvinv conflicts down the road.
Cheers,
Mike

Why can't local references be cached ?

Hi,
I read that the local references created during the lifetime of a native method cannot be cached and used in another lifetime of the native method. I don't understand why they can't be cached. I know that the VM creates a registry of local references, which is deleted once the lifetime of a native method is over, thereby allowing the objects referred by those local references be eligible for garbage collection. But then if a local reference is cached to some global/static variable, then the object referenced cannot be GCed. Hence we should be able to use that cached reference in a later execution of the native method too. i.e., Even though the local reference of the eariler exceution was freed, since we have cached its value (which I assume is a sort of pointer to the actual object), we should be able to use the cached reference. If not, can anyone please explain why this does not work like that ?
Thanks.

I don't want global reference. But I just wanted to understand why local references can't be cached. Though I had read what all you said above, before posting my question, the answer somehow occurred to me while I was reading your reply. So, thanks.
I think the cruical point here is that, the JVM is not aware of the copies of the local references. It does not know and care how many copies of local references we (JNI programmers) make at the JNI level.

Some Questions on Adobe PDF Forms

Hi,
I have some questions on Adobe Forms development (especially Adobe Forms in ABAP)
1)     In a form interface, in the Code Initialization can we use Object Oriented Syntaxes such as class method calls, etc?
2)     Can we declare Global Data variables with reference to Class References / Interfaces
3)     Can we use the latest ECC 6.0 enhancement framework to add code in the standard form interface to enhance / enrich some logic within the form? This is to avoid copying the form interface into a Z in order to enrich the form via coding?
Please let me know if this is possible at all and how
Will award points
Thanking You in advance
Regards,
Aditya

That is possible of course. You should use the PDFObject API for that requirements.
1. define a xml schema with all data given by SAP system.
2. create a form template which uses this schema as data connection
3. implement a java application (i.e. J2EE application) which:
- gets the data from SAP system and generates some pdf files (using PDFObject API)
- reads pdf files back to xml and submits the data to a BAPI
Regards
Sebastian

Some questions on whitespace and &

Dear all,
I have some questions on whitespace and & that need you kind help:
1. Except /n /t /r and space, is there any characters that are whiteSpace characters?
2. When parsing XML document, when the ignorableWhitespace() method is called? Will it be called from characters() ?
e.g. Where the white space after <a> is called, and where is the white space between test1 and test 2 indied is called?
<a>
 test1 test2
</a> 3. When the & should be escaped in a well-formed (or validated) XML file by replacing &?
It should be excaped in any element content, such as test1 & test2 - except for <![CDATA[ section?
It should NOT always be used in attributes? e.g. <a b="test1 & test2"/> - has to do escaped by entity & - am I right?
Thanks!
Thanks


Thanks DrClap.
>
2. When parsing XML document, when the
ignorableWhitespace() method is called? Will it be
called from characters() ?It will be called when the document has a DTD and the
parser is a validating one that is actually
validating, when the parser sees whitespace that is
not part of a DTD element. It will not be called from
characters() because that is a method that you write.I wrote a contentHandler and using Xerces parser to parse an XML document. When I set validating feature to false, I found that for:
<a>
 test1 test2</a>The white space between <a> and (including newline) is actually called from characters(), not in ignorableWhitespace(). So does this mean that if validating - white space is always called from ignorableWhitespace(), and if not validating, if it is always called from characters()?
>
3. When the & should be escaped in a well-formed(or
validated) XML file by replacing &? The XML Recommendation says "The ampersand character
(&) and the left angle bracket (<) may appear
in their literal form only when used as markup
delimiters, or within a comment, a processing
instruction, or a CDATA section. If they are needed
elsewhere, they must be escaped using either numeric
character references or the strings "&" and
"<" respectively."So in this sense, both & in test1 & test2 and <a b="test1 & test2"/> is illegal unless replacing them by & - right? What does the markup delimiters mena in above XML Recommendation ? Example?
Thanks!

Some questions on JFormattedTextField

I more or less manage to work with JFormattedTextField, but have not mastered this control fully. I hope that someone can help me with some questions I still have.
JFormattedTextField field = new JFormattedTextField(); // no-args constructor
double d = 1.23456; // primitive type will be autoboxed to Double
field.setValue(d); // AbstractFormatterFactory based on DoubleNow, when the field has the focus, a text value of +1.2+ is displayed. As soon as it looses focus, the text value is changed into +1.235+. I find that weird behaviour and would rather see it the other way around or see the same text in both situations. Can anybody explain me what's happening here? I do not observe this behavior when using one of the other constructors.
Another problem has to do with internationalization. The Dutch locale, for example, uses a comma as a decimal separator. Users having a scientific background, however, often override the default settings and use a period as a decimal separator (on Windows by changing the regional options). Is there a way of using whatever separator a user has chosen for his system when formatting numbers in Java? I know you can use the DecimalFormatSymbols class to change symbols for a specific locale, but that does not take into account user-specific settings.

Hi.
Try this:
DecimalFormatSymbols fs = new DecimalFormatSymbols();
    fs.setDecimalSeparator('.');
    fs.setGroupingSeparator(',');
DecimalFormat format = new DecimalFormat("##.#", fs);
AbstractFormatter formatter    = new NumberFormatter( format );
AbstractFormatterFactory ff = new DefaultFormatterFactory( formatter, formatter, formatter);
JFormattedTextField field = new JFormattedTextField();
field.setFormatterFactory(ff);

Need to delete local references in unknown calling context

Hi,
I was looking for the need to delete local references and came across this documentation,
What does unknown caller context mean? and how does it cause local references to remain allocated in reference table although the native function returns?
http://java.sun.com/docs/books/jni/html/refs.html
5.2.1 Freeing Local References
You want to write a utility function that is called from unknown contexts. The MyNewString example shown in Section 4.3 illustrates the use of Delete-LocalRef to delete promptly local references in a utility function. Otherwise there will be two local references that remains allocated after each call to the MyNewString function.

how does it cause local references to remain allocated in reference table although the native function returns?Because it doesn't return to the JVM where it gets deallocated, it returns to the unknown caller context, i.e. some other piece of native code in your JNI layer. So the references remain until the unknown caller context returns to the JVM.

Local references and EJBs in separate jars

Hi
I have trouble in getting local references when the EJBs are built in separate jar files. I am using the <ejb-link> in the <local-ejb-ref>. But I could not get reference to the EJB's local reference.
Please let me know if there is any documentation that tells about getting local references and having the EJBs in separate jar files.
Thanks

Greetings,
Hi
I have trouble in getting local references when the
EJBs are built in separate jar files. I am using theThere are a number of reasons why this may be happening and without more specific information it is difficult to say which you are encountering... In any case, the fact that your beans are in separate jars is not, by itself, the issue. It is worth noting, however, that Local references may only be used when both components (referencer and referencee) are co-located within the same VM instance and perhaps this little fact may shed some light on your problem??
<ejb-link> in the <local-ejb-ref>. But I could not get<ejb-link> should point to the actual JNDI binding name, sans root nomenclature (java:comp/env/), but with full sub-context (ejb/myapp/.../MyLocalBean), of the referenced bean.
reference to the EJB's local reference.Perhaps it goes without saying (but just to be sure :)... of course, your referenced bean must actually have Local interfaces associated with it.
Please let me know if there is any documentation
that tells about getting local references and having
the EJBs in separate jar files.Both the J2EE tutorial and the EJB 2.0 spec. have the relevant information. :) However, I've already listed the requirements above: supplied local interfaces, co-located components, and correct link reference.
I hope this helps.
ThanksRegards,
Tony "Vee Schade" Cook

Some questions regarding x-fi pro 5.1

Hi guys, i have some questions that i cant seem to find answers to that i hope someone can help me with.
I recently bought an X-FI Pro 5.1 USB sound blaster.
I have it plugged into my computer, and i have an optical cable from its spdif output connected to my wireless surround headphones (sony ds6500). These headphones can accept up to 7.1 signals in dolby digital and DTS and they "emulate" a surround through its 2 speaker elements.
As a reference i can add that i have tried these plugged directly into my PS3 system and the 5.1 DD signal i get is really good! You can clearly hear what is behind and what is in front of you!
I have installed the latest drivers and all available software from creatives website.
1:
And when reading about this card i often see people refering to the diffrent modes available (entertainment, game and cinema). But nowhere in any software can i find any option to change my mode, which seems to be stuck in entertainment. Whats up with this?
2. I am getting a DD signal to the headphones, they indicate this so the system has the basics properly set up.
But the biggest gripe i cant figure out is why it send the same audio from the FRONT and REAR.
That is, i can hear no diffrence between the signal that is suppose to be the front speaker and the one that is suppose to be the rear speaker. What am i missing?
3. I have about .5 sec delay of the audio when playing a game for instance, can this be solved?
Please ask if you need any more info to help me solve this.
Thanks in advance

Okay, btw. you mixed point 1 with 2 i'll stay at original numbering
1. [2.]) Well, i must confess the manual from creative isn't working correct (while the ones for other creative card work, just checked), it just shows the menue but the browsing page shows an error (if the one that is packed with your software is working and you could upload it that would help a lot). So i just searched for modes and found one so i thought it would have them. But now i took a deeper look and there is just the Entertainment Mode in Creative Software Suite. Also the Quick Start Guide shows there is not much software available, so i guess this card simply doesn't have it.
2. [1.]) That should work either you can try 2/2.1 or Headphone (in X-FI Console and Windows Audio Console) as the Headphone is Stereo only with kind of virtual Surround like CMSS does. Btw. on your first post you wrote: kind of nice DD you hear. Thats wrong AFAIK. You hear Sonys Virtual Technology or maybe (as other Surround Headsets feature that) Dolby Headphone. Anyway it might be some of the creative options mix up with Sony way of surround sound. So did you try enable/deable CMSS (3D/Headphone/Virtual etc)? Else it just can be the configuration of speakers in Windows: Please note that the channel settings in Windows® Vista/7 can be set in Windows Audio Console, not in the X-Fi Audio Console. (Right click the speaker icon at the system tray, Select playback device, “Speakers”, Speaker Configures)
3. Concerning the Delay: Under 'Creative audio control panel,' be certain that 'high speed' (2.0) is checked, and not 'full speed' (1.1) . Else you might need to switch back to Vista or XP drivers that obveausly helped some people to solve the delay problem. Or you try newest PAX drivers eg. wait on Danial_K's new X-Fi Pack (what i believe will be best bet as you also get new functions). I know creative drivers are a bunch of ****** and if you compare to AuzenTech oder ASUS f.e. the hardware isn't better too. Never going to buy creative again.

Some Question in ADF

Hi,
I have some questions in adf for which i do not know proper answers ... Can someone please let me know on the below mentioned questions
1. What are style sheets in adf ?
2. what is transaction handling in adf ?
3. what are adf declarative components ?
4. how to display radio button in af:query
5. what is discriminator and change indicator in EO ?
Thanks,

4.how to display radio button in af:queryNot possible .. see comments and thread reference @ Re: radio buttons in af:query
5. what is discriminator and change indicator in EO ?Discriminator is used to setup polymorphic EOs. Change Indicator in EO is used to compare the row in Entity Cache with one in DB to find out if it has changed.
http://mjabr.wordpress.com/2011/06/10/what-is-change-indicator-property/
http://mjabr.wordpress.com/2011/06/17/using-discriminator-columns/
3. what are adf declarative components ?
Quoting Frank - Declarative components allow developers to build a composite component out of existing ADF Faces components.
from https://blogs.oracle.com/jdevotnharvest/entry/about_jsf_fragments_adf_regions_declarative_components
Building them - http://www.oracle.com/technetwork/developer-tools/jdev/declarative-component-adf-084567.html
For other questions did you first try to go through the documentation or do a basic search ? ... these are pretty broad topics and you would need to do a bit of research on them your self.

JNI freeing local references

We're using JNI to receive data from a native callback function. The native side creates local references, but does not use the DeleteLocalRef function. This works fine with the SUN JRE.
However, the IBM JRE gets a stack overflow exception.
According to IBM, we should delete the local references, but this requires a total rewrite of our program.
Unfortunately, the JNI documentation is not very clear on this topic. In our understanding, the local references are being released automatically once they are out of scope.
Is it really necessary to delete the local references or is there a bug in the IBM JRE ?
Sample program :
==============
// JNITest.java
interface INativeNotification
public void nativeCallBack();
class JNITest implements INativeNotification
private long counter;
public native void nativeInitialize(INativeNotification callbackNotification);
static {
System.loadLibrary("JNITest");
public void nativeCallBack() {
System.out.println("JNITest CallBack " + counter++);
public void run() {
nativeInitialize(this);
counter = 0;
while(true)
try {
Thread.sleep(1000);
} catch(Exception e) {
public static void main(String[] args) {
JNITest jnitest = new JNITest();
jnitest.run();
// JNITest.cpp : Defines the entry point for the DLL application.
#include "stdafx.h"
#include "JNITest.h"
static DWORD dwThreadId;
static HANDLE hThread;
static HANDLE volatile hInitCompleteEvent;
static bool volatile bLoop = true;
static JavaVM *jvm = NULL;
static jobject nativeNotification;
BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved )
return TRUE;
bool DoNativeCall(JNIEnv *env)
jclass cls = env->GetObjectClass(nativeNotification);
jmethodID callbackMethod = env->GetMethodID(cls, "nativeCallBack", "()V");
env->CallVoidMethod(nativeNotification, callbackMethod);
if ( env->ExceptionOccurred() )
env->ExceptionDescribe();
env->ExceptionClear();
printf("Native code got exception calling nativeCallBack\n");
return(false);
return(true);
DWORD WINAPI JNIThread( LPVOID lpParam )
JNIEnv *env = NULL;
jvm->AttachCurrentThread((void**)&env,NULL);
SetEvent(hInitCompleteEvent);
while (bLoop)
if (!DoNativeCall(env))
bLoop = false;
Sleep(1);
env->DeleteGlobalRef(nativeNotification);
jvm->DetachCurrentThread();
return 0;
* Class: JNITest
* Method: nativeInitialize
* Signature: ()V
JNIEXPORT void JNICALL Java_JNITest_nativeInitialize(JNIEnv *env, jobject object, jobject _nativeNotification)
DWORD dwThrdParam = 0;
env->GetJavaVM(&jvm);
nativeNotification = env->NewGlobalRef(_nativeNotification);
hInitCompleteEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
hThread = CreateThread( NULL, 0, JNIThread, &dwThrdParam, 0, &dwThreadId );
if (hThread == NULL)
env->DeleteGlobalRef(nativeNotification);
return;
WaitForSingleObject(hInitCompleteEvent, INFINITE);

Hi,
First of all, thank you for your time and interest.
Let me first recapitulate the history of this problem :
We have a C interface for controlling our HW boards. A few years ago, we wrote a java interface for one of our customers. This JNI wrapper was certified for the SUN JRE and has been used for several years now without a problem. There are several java and native callback functions in this wrapper and our development team took some design decisions (e.g. no DeleteLocalRef's, re-fetching the jclass and methodID in the callback functions, ...).
Recently, one customer asked us to use this wrapper with the IBM JRE. At first, there seemed to be no porting issues. However, after running for a very long time, we had a stack overflow.
Our customer reported this problem to IBM and finally, after sending a sample program (see my first post), IBM confirmed that there was a problem in their JVM. They provided a fix, but this fix only deleted local references which were created in a GetObjectClass call. After providing a few other fixes which did not provide a proper solution either, they suddenly changed their strategy and claimed that we have to delete all the local references which are created in a thread, otherwise we're not JNI compliant.
However, when we look in the IBM JVM diagnostics guide (Chapter 6 : Understanding the Java Native Interface, see http://www-106.ibm.com/developerworks/java/jdk/diagnosis/), they provide the following code as a sample for loosing local references, resulting in the underlying object being garbage collected.
jobject myJNIfunc1 ()
return env->NewObject ();
void myJNIfunc2 ()
jobject obj;
obj = myJNIfunc1 ();
.. -> no local reference to obj exists, and the garbage collector can collect it
Are we interpreting the IBM JVM diagnostics guide wrong or is there a problem in the IBM JVM ?
The SUN JVM deletes the local references properly.

Thinking about purchasing a Macbook, but I need some questions answered

Hey everybody,
I got a response to my Craigslist ad, so it's looking like selling my iMac G5 and buying a new Macbook might actually happen. My only problem is that I have some questions about what to do with my money. I'm not a power user, or someone who really plays games (other than my Nintendo emulators) so I already know that a Macbook is the right computer for me.
(1) I don't have external storage, so how should I go about transferring my stuff? Buying the Macbook before selling my iMac is not an option because I just don't have that much money. I've read that some people buy the Macbook and then upgrade the HD, using the 60 Gig that comes with it as their external storage by buying a $20 case for it. I have about 50 GB taken up on my iMac, so I'm going to probably need around 100 GB at least. I know upgrading the memory doesn't, but does upgrading the HD void the warranty? Any brand recommendations for HD's? Heat and noise are very important to me. (7200 RPM is out)
(2) I never really used the Superdrive on my iMac, but it was nice to know it was there. Is the performance difference from 1.83 to 2Ghz noticeable? I hear it's not, but I also read that under Rosetta it matters. Since Office isn't universal yet, I'd like to know. Can anyone verify this?
(3) I read on MacOSRumors that Leopard is probably going to do some nice little graphic effects when it's released, and that the next revision of the Macbook Core Duo will probably still have integrated graphics. Since I don't plan on doing this again for at least another year, do you think the Intel graphics will be enough to keep up for a little while?
(4) Anybody have some experience with selling a computer on Craigslist? I'm smart enough to request cash, local buyers only, and have them meet me at my house to try the computer out. Any advice on how to make sure this runs smoothly? I might end up leaving some things on the computer for the buyer. Anything that I should make sure to delete (i.e. preferences, passwords, etc.?) A checklist of what I should remember to do would really help.
I think that about covers all of it...Thanks in advance.

I sold my computer on Craigslist. No problems. I think it's only really dodgy if you are buying one from there - then you should be very careful!
I'm not sure exactly the best way to go about deleting your stuff, but you have the right idea: get rid of your preferences and passwords, and your internet history as well.
I'm not sure how to look at 'Keychain', but you might want to make sure that this is empty.
In terms of processor speed, I can't help you: I have just got the 2Ghz, but partly because not having a DVD burner isn't an option for me. As file sizes and your storage needs increase, your need for a DVD burner will probably increase as well.
Leopard is not far away now, and I would guess that Apple would make sure that their new OS will work adequately on their new computers. I would be surprised if there is much of a noticeable difference in anything but the most graphics heavy applications. Could be wrong about this, but I think that the basic GUI will perform well on any MacBook.
In terms of moving info from your iMac... the cheapest thing apart from buying the MacBook before you sell is borrowing a HD or iPod from a friend. 50G isn't THAT much info, you could always burn it to DVD-Rs in a pinch.

Grüße Fräulein, Sturm-Verbot-Führer, Hello, we are with some questions

Grüße Fräulein, Sturm-Verbot-Führer, Hello, we are with some questions about the thought of GBP 77.336, apparently some of our local chapters of chicken producers in Mexico, should be changed, put a small bed of sand and tents in the city. One of the Mexicans, all connections Poncho sniffing glue every time you see him with a hatchet to cut the data cable with an ax. We called immigration and the nature of the problem and Poncho and his producer was a kind of rebellion, threw the chicken **bleep** on the government and is working like crazy NAP. Bryan and our engineers, it seems that the costs of these persons from Mexico, is excited because he said he misses his family in the Middle East, Verizon, I called our 1-800 number and were glad we had rotary phones , but said that someone would go to see these issues with Peter Nam and poncho, if you write an element upstream of the cut of radiation accelerate our DSLAM. Now, with all kinds of components, is accelerating as bowling, and then started kind of breakdown of carbon molecules locally is not always the Internet is like living in Mount St. Helens.

I'm afraid I don't understand the question.
If a forum member gives an answer you like, give them the Kudos they deserve. If a member gives you the answer to your question, mark the answer as Accepted Solution so others can see the solution to the problem.
"All knowledge is worth having."

Beginner: some questions

Hello all,
I am just a beginner for EJB, and writing a simple example of EJB. Some questions confuse me.
1.     about server
I just use JDK1.3.1 and JSDKEE1.3, is it all right? Do I need another things, for instance, weblogic ( what is this?)?
2.     about deployment
I wrote some code( CMP) include: home interface, remote interface, implement class, and primary key. Now , deploy it? Use ��C:\j2sdkee1.3\bin\deploytool�� command, is it?
I thought every EJB need a XML deployment descriptor, my question is: I write this by myself or use deploytool?
3.     about datebase
I notice some example use Cloudscape, is this database? Whether can I use another database, for instance, MS Access? If I can, how to access it in CMP, and what is the ��Database JNDI Name��( if I use MS Access) when I deploy using deploytool?
4.     about direction
if I finish coding, then compile, and deploy, now, is it OK? I mean, I should move some file to special direction? (I remember the .class file is placed in special direction when I use servlets. )(suppose: I work in C:\mybean. Every file in it)
5.     I use JDK1.3.1 and JSDKEE1.3 to write a simple example, do I need anything else in order to achieve EJB?
Thanks

1. No you do not need anything other than J2SE 1.3.1 and J2EE SDK 1.3 J2EE SDK 1.3 includes a reference implementation that you can use to do pretty much everything that is J2EE platform standard.
Products such as WebLogic, WebSphere are comercial implementations of J2EE platform specifications. And you would use them for commercial/production quality applications.
See http://java.sun.com/j2ee/faq.html Especially the questions about using reference implementation.
2. You as a developer write the deployment descriptor and the deployment engineer customizes it if required at deployment time.
3. You can use JDBC-ODB driver to work with Microsoft Access databse.
See http://java.sun.com/j2se/1.3/docs/guide/jdbc/getstart/bridge.doc.html#996747
4. No. The files go to the right place at deploy time.
5. No. If you have J2SE 1.3.1 and J2EE SDK 1.3, you arealready on your way to achieving EJBs.

Some Questions about NI-6602

Hello!!
I have some question about NI-6602.
1.What is the difference between Port and Line ?
What's the difference of Line nad Portin these functionIG_In_Line,DIG_Out_Prt,DIG_Line_Config,DIG_In_Prt,DIG_Out_Prt,DIG_Prt_Config
2.If I would like to apply gate to my counter application, is it possible that we give the gate signal via software?
Or I need to connect signal from hardware? If hardware is needed, is it possible to apply another counter's output as my counter's gate input?
3.Can we apply gate to this fuction ND_PULSE_TRAIN_GNR?
4.Can we detect the counter's source is High or Low ?Is there any fuction to read out the source status?

Hello,
Thank you for contacting National Instruments.
"1.What is the difference between Port and Line?"
A Port is a collection of lines. Usually 8 lines to a port.
"What's the difference of Line nad Portin these function DIG_In_Line, DIG_Out_Prt, DIG_Line_Config, DIG_In_Prt, DIG_Out_Prt, DIG_Prt_Config"
These functions either perform an output or input, or configure your digital ports and lines. Please see the Traditional NI-DAQ Function Reference Help found under Start >> All Programs >> National Instruments >> NI-DAQ >> Traditional NI-DAQ Function Reference Help for more information on these functions.
"2.If I would like to apply gate to my counter application, is it possible that we give the gate signal via software? Or I need to connect signal from hardware? If hardware is needed, is it possible to apply another counter's output as my counter's gate input?"
You can apply a gate signal from software. For example you can use the 6602's Timebase to gate your counter during pulse measurement applications. You can also route a counter's output to the gate of another counter internally. Look up Select_Signal in the Function Reference Help for more details.
"3.Can we apply gate to this function ND_PULSE_TRAIN_GNR?"
I am not sure what you are asking here. ND_PULSE_TRAIN_GNR is a parameter used in the GPCTR_Set_Application function to set up a counter for pulse generation. Please see the page titled "application = ND_PULSE_TRAIN_GNR: GPCTR_Set_Application" in the Function Reference Help more more information about this parameter.
"4.Can we detect the counter's source is High or Low ?Is there any fuction to read out the source status?"
There is no function to read the state of the source pin. You will need to route the source pin to a PFI line and perform a digital read on that line.
I hope this answers your questions. Please feel free to reply if you have any further questions.

Local references...some questions...

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