Packaging and Different Directories

Hi there,
I am trying to build an application that will store plugins in a separate directory to the main program. For example, if the main program is at c:/myapp then the plugins are at c:/myapp/plugins . The plugins are also java files.
I want to be able to access these plugins to use them in my program - is there any way this can be done WITHOUT modifying the classpath?
This is on a similar note, but I have tried to package the plugins up into a plugins package and then access it, however I get issues trying to talk between files in the same package (example, 2 plugins talking to each other). How can I get package files to talk to each other when they both co-exist in the exact same package. Shouldn't this already be acceptable communication if I have .; in my classpath?
Thank you for your efforts, I know I keep bringing up the hard questions :)
WATTO

OK, here comes the questions... :)
I have successfully been able to load class files from a different directory using the URLClassLoader, however when it loads it complains that it can't access a variable in the superclass. The Superclass is another class that I have made, which is located in the main program directory, but it is not in the same directory as the plugin. So, this tells me that it has loaded the plugin class using a separate classpath to that used by the program, otherwise it would have been easily able to find the superclass.
So, I have tried copying/moving the superclass into the same directory as the plugin, but still it says that it is unable to access the superclass.
The way I have been working this so far is that I compile the plugin in the main program directory, so that the superclass and other relationships are preserver, and then move the plugin class file into the plugins directory.
Can anyone offer any suggestions as to why this would not be working. Does anyone know how the URLClassLoader uses the classpath of the program? Basically, why is it not finding my superclass even if the superclass is in the same directory as the class I am loading, and how can I solve the problem?
Just to clarify, it IS finding the plugin, so I'm not getting those ClassNotFound exceptions.
Thanks for any help you can provide.
WATTO

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hi all,
here is a script which manages a local repository and lets you edit
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http://sourceforge.net/projects/pkgman/
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http://aur.archlinux.org/packages.php?ID=17100
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RTFM online:
http://sourceforge.net/apps/mediawiki/p … n_man_page
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changelog:
version 2.4:
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version 2.5:
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> new and more comprehensible manpage description (thanks to bender02)
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version r28:
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version r30:
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r42: * more bugs fixed.
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For further details please read the manual page.
Last edited by DonVla (2010-04-28 11:56:59)

I'm having some troubles with it (perhaps missing dependencies, and forgotten hardcoded dirs?):
jan@aconcagua 8:20PM ~ % pkgman --runmefirst
/usr/bin/pkgman: line 77: /home/jan/apps/skripte/archscripts/pkgman/share/pkgman/color.bash: No such file or directory
/usr/bin/pkgman: line 1293: initcolor: command not found
/usr/bin/pkgman: line 312: highlight: command not found
/usr/bin/pkgman: line 312: error: command not found
/usr/bin/pkgman: line 313: highlight: command not found
/usr/bin/pkgman: line 313: error: command not found
/usr/bin/pkgman: line 314: highlight: command not found
/usr/bin/pkgman: line 314: error: command not found
/usr/bin/pkgman: line 315: highlight: command not found
/usr/bin/pkgman: line 315: error: command not found
/usr/bin/pkgman: line 317: error: command not found
/usr/bin/pkgman: line 318: error: command not found
/usr/bin/pkgman: line 321: highlight: command not found
/usr/bin/pkgman: line 321: msg: command not found
/usr/bin/pkgman: line 329: list: command not found
/usr/bin/pkgman: line 332: list: command not found
/usr/bin/pkgman: line 332: list: command not found
touch: cannot touch `/bin/.pkgman.registered': Permission denied
/usr/bin/pkgman: line 332: list: command not found
/usr/bin/pkgman: line 332: list: command not found
/usr/bin/pkgman: line 332: list: command not found
/usr/bin/pkgman: line 332: list: command not found
/usr/bin/pkgman: line 332: list: command not found
/usr/bin/pkgman: line 337: msg: command not found
curl: option --output: requires parameter
curl: try 'curl --help' or 'curl --manual' for more information
^C/usr/bin/pkgman: line 209: cleanoutput: command not found
/usr/bin/pkgman: line 209: cleanoutput: command not found
(I terminated with ctrl-c).
EDIT: errors resolved by correcting the path $HOME/apps/skripte/archscripts/pkgman/share/pkgman to /usr/share/pkgman in the pkgman itself.
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.java files located in different directories - trouble compiling

My attempts at getting my main .class file (../master/BicycleMaster.class) to automatically recognize that it's supporting .class file (../master/child/BicycleChild.class) located one directory below keep failing and the .java files won't compile.
If I move both .java files to the same location (in the ../master directory) then they compile and run just fine, but it's when I want to separate them into the two different directories that I have a problem compiling them. They won't compile because the references in BicycleMaster.jave to BicycleChild.java can't be resolved.
I was hoping - if you have time - that you might be able to show me by example in the code below? In the file ../master/BicycleMaster.java I added 'package master;' as the first line of the code. It was my impression that this would tell the compiler to look in the sub-directories for any additional .java files. This didn't work either.
HERE ARE THE DETAILS:
Directory of K:\COMMON\ITS\STEVEB\java\master
03/04/2008 04:25 PM <DIR> .
03/04/2008 04:25 PM <DIR> ..
03/04/2008 04:24 PM 612 BicycleMaster.java
03/04/2008 03:54 PM <DIR> child
1 File(s) 612 bytes
K:\COMMON\ITS\STEVEB\java\master>type BicycleMaster.java
package master;
class BicycleMaster {
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        //Invoke methods on the objects
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        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printStates();
        bike2.changeCadence(50);
        bike2.speedUp(10);
        bike2.changeGear(2);
        bike2.changeCadence(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printStates();
}Directory of K:\COMMON\ITS\STEVEB\java\master\child
03/04/2008 03:54 PM <DIR> .
03/04/2008 03:54 PM <DIR> ..
03/04/2008 03:54 PM 524 BicycleChild.java
1 File(s) 524 bytes
K:\COMMON\ITS\STEVEB\java\master\child>type BicycleChild.java
class BicycleChild {
    int cadence = 0;
    int speed = 0;
    int gear = 1;
    void changeCadence(int NewValue) {
        cadence = NewValue;
    void changeGear(int NewValue) {
        gear = NewValue;
    void speedUp(int increment) {
        speed = speed + increment;
    void applyBrakes(int decrement) {
        speed = speed - decrement;
    void printStates() {
        System.out.println("Your cadence: "+cadence+", Your speed: "+speed+", Your gear: "+gear);
}HERE ARE THE ERRORS:
First I compile the ../master/child/BicycleChild.java file and it compiles fine. This I attempt to compile ../master/BicycleMaster.java and I get the following errors:
K:\COMMON\ITS\STEVEB\java\master>javac BicycleMaster.java
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
4 errors

Thanks so much for responding. Progress was definetly made as the compiler now works longer before erroring out. Sadly it's still erroring out for a reason I'm not understanding. Please let me know if you can see where I'm going wrong.
Here's how it played out for me:
K:\COMMON\ITS\STEVEB\java>echo %classpath%
.;k:\common\its\steveb\java\;C:\Program Files\Java\jre1.6.0_04\lib\ext\QTJava.zip
K:\COMMON\ITS\STEVEB\java\master\child>javac BicycleChild.java
K:\COMMON\ITS\STEVEB\java\master\child>cd ..
K:\COMMON\ITS\STEVEB\java\master>javac BicycleMaster.java
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
4 errors
Here are the two programs revised as you suggested:
K:\COMMON\ITS\STEVEB\java\master\child>type BicycleChild.java
package master.child;
class BicycleChild {
    int cadence = 0;
    int speed = 0;
    int gear = 1;
    void changeCadence(int NewValue) {
        cadence = NewValue;
    void changeGear(int NewValue) {
        gear = NewValue;
    void speedUp(int increment) {
        speed = speed + increment;
    void applyBrakes(int decrement) {
        speed = speed - decrement;
    void printStates() {
        System.out.println("Your cadence: "+cadence+", Your speed: "+speed+", Your gear: "+gear);
}K:\COMMON\ITS\STEVEB\java\master>type BicycleMaster.java
package master;
class BicycleMaster {
    public static void main(String[] args) {
        //Create 2 different bicycle objects
        BicycleChild bike1 = new BicycleChild();
        BicycleChild bike2 = new BicycleChild();
        //Invoke methods on the objects
        bike1.changeCadence(50);
        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printStates();
        bike2.changeCadence(50);
        bike2.speedUp(10);
        bike2.changeGear(2);
        bike2.changeCadence(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printStates();
}

RTorrent: move downloads to different directories depending on tracker

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Last edited by tladuke (2010-12-12 23:31:40)

I'm trying to download office 365 small business package, and every time I try the website it says there is a runtime service error in the '/' application. Is this my mac or is it the website, and how can I fix it?

I'm trying to download office 365 small business package, and every time I try the website it says there is a runtime service error in the '/' application. Is this my mac or is it the website, and how can I fix it?

If a phone is sold from one friend to another and wants to use it on a different carrier the friend can contact the carrier it was sold by to request it unlocked. I know AT&T, Verizon, and Sprint will give you the steps to unlock it as long as the original contract it was bought under has been completed. eBay/Craigslist is really not the best place to try to get "unlocked phones" from, if it turns out the phone isn't unlocked then I'm really sorry you got stuck with that one and as stevejobsfan said above I would report them immediately and see if you can recover your money. I sell phones for a living and this happens a lot

How to include header files from different directories?

Hi,
Sorry for the newb question, but I can't figure this out. I'm trying to compile a simple piece of code (C++) that uses header files in a directory different from the Project directory; header files are in /opt/csw/postgresql/include/pqxx. I've tried a few different things, adding that directory to the include directives under Resource Files, add existing files from a folder, etc etc. Whenever I try to build, dmake bails with status -1. I can't seem to get this working, can someone explain how to use header files from different directories?
Thanks,
SlowToady

Header files are usually specified relative to a base directory. If the base directory is not a system directory -- /usr/include or the compiler installation directory -- add a command-line directive
-I path/to/base/dirfor each such directory.
The path can be absolute, such as
-i /opt/csw/postgresql/includeor relative, such as
-I ../../my/includeIn your source code, specify the header file relative to the base directory, and be sure to use quotes, not angle brackets. Example:
#include "header.h" // right
#include <header.h> // wrongThe angle brackets are used for system headers, like <iostream> or <stdlib.h>.
The rules above are common to all compilers on Unix and Linux, and generally to all C and C++ compilers.
For more details, read about the -I option in the C++ Users Guide. You can find the guide by pointing your browser to the "docs" directory in the compiler installation, or go here:
http://docs.sun.com/app/docs/doc/819-5267
All command-line options are described in Appendix A.

Drop the files into different directories based on the filename

Hi,
I had a reqiuirement based on the file name, i should drop the files in to different directories.
I can get the filename through variable substitution in receiver file communication channel, now i want to drop the file into different folders based on conditions.
suppose, if the file name is DDDX234
i should do substring of filename0+(4), if the value is L then i should drop in X directory
suppose, if the file name is DDDY234
i should do substring of filename0+(4), if the value is L then i should drop in Y directory.
How can i drop the file into differnent directories based on filename.
Thanks
Srinivas

Thanks Michal,
I mapped the directory and filename to the target header in the mapping
Filename --> UDF --> Header(target)
and in the receiver channel checked the ASMA and given * in the filename and directory name.
But in runtime iam getting the error as
Attempt to process file failed with com.sap.aii.adapter.file.configuration.DynamicConfigurationException: The Adapter Message Property 'FileName' was configured as mandatory element, but there is no 'DynamicConfiguration' element in the XI Message header
MY UDF is
public String Directory(String a,Container container){
DynamicConfiguration conf = (DynamicConfiguration) container.getTransformationParameters().get(StreamTransformationConstants.DYNAMIC_CONFIGURATION);
DynamicConfigurationKey key = DynamicConfigurationKey.create( "http://sap.com/xi/XI/System/File", "FileName");
DynamicConfigurationKey key1 = DynamicConfigurationKey.create( "http://sap.com/xi/XI/System/File", "Directory");
String FileName = conf.get(key);
FileName = a;
conf.put(key, FileName);
%%%based on filename the directory should change
String Directory = conf.get(key1);
Directory = "/SAPInterface/XI/PPD/DHX/out";
conf.put(key1, Directory);
return "";
Help me in correcting this error.
Thanks
Srinivas

Package and Directory Structure

Hello --
I work in a group that supports 3 web sites. (b2b, b2c, b2e)
We're just beginning to develop Java in-house and
currently using Solaris and JDK 1.2.x.
I need to propose a package and directory structure strategy.
The "reverse the domain name" guideline makes sense to me.
My first thoughts are: ("classes" dir could be created anywhere)
classes/com/ppco/b2X/ <--- for .java and .class files (development)
lib/ <--- for b2X JAR files (ready for test or production)
util/ <--- for our utility classes like DBAccessor
lib/ <--- for our JAR files
sun/ <--- for classes like com.sun.mail pkg
lib/ <--- for JAR files like mail.jar
org/ <--- for classes in org.omg.CORBA pkg
lib/ <--- for JAR files
We need to handle 3rd party classes.
Development would be done in the b2X tree and JAR files would
be installed the lib/ dir for testing and release to production.
Does anyone have recommendations or experiences to share ?
Are there some things to avoid ?
Thanks !
Al

Hello Al,
you are on the right track. A typical convention I follow is:
<project>
bin - for startup scripts, etc. to run your application
build - for build scripts (not necessary if you build using your IDE. See below.)
classes - for my compiled classes
lib - for my 3rd party libraries
src - for my source code
test - for my test code (see http://junit.org/ )
That's the project hierarchy. The src (i.e. the package heirarchy) structure is another story.
As you say, you start with the reverse domain name. This is to give your packages a unique namespace. After that, your best guide is practice. Packages can be larger or smaller, depending on your coding practices. Usually you would have these (exact names may differ), plus others:
com/ppco/client
com/ppco/server
com/ppco/common
com/ppco/db
I think your break down of sun, org, etc. is a bit too much. If you would like to do so, however, I recommend you do the separation under /lib. This way, the top level project directory is not polluted by the different types of libraries in use.
Regards,
Manuel Amago.
From build above: I would suggest you always build your release distribution directly with the JDK, not using any IDE compiler. This is because Sun's JDK is the reference implementation, thus, any compatibility issues are not yours.
An easy way to achieve this is by using ANT (see http://jakarta.apache.ort/ant/ ).

Send multiple files in different directories using Receiver File Adapter

Hi Experts,
I have one File to File without ESR scenario where I have to pick multiple files from different directories and to save them in different directories on receiver side.
Can anyne help me to send multiple files in different directories using receiver file adapter.
Is it possible??
Any help will be appreciated.
Regards,
Danish

hi ,
that is possiable without esr,
we need to create one sender communication channel , in that we nend to use "adavnced selection for source file " for sending multiple files from multiple directories.
we need to create 'n' receiver communication channels and 'n' receiver agreements based on communication channels .
in receiver determination, provide multiple receivers
In interface determination , provide * symbol for receiver communication components
thanks,

Packaging and Different Directories

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