php-java-bridge-users Mailing List for PHP/Java Bridge

Hello Jost,

I believe I am loading the custom libraries statically now.  I don't use a 
java_require or reload statement in my PHP code.  From the sounds of the 
email below, that is probably the best approach.  However, I think I just 
discovered an implication of doing that.

I made a minor change to one method in the U2 class.  Before the change it 
had 4 input parameters.  After the change it had 3 input parameters.  I 
moved it to the ext directory, but no matter what I tried I kept getting a 
method not found error.  I assumed it was because I was sending it 3 
parameters, but it still "thought" it had 4.  Finally I rebooted the web 
server and it worked fine.

This makes me suspect that static libraries load once on startup, and that 
simply moving the jar to the ext directory does not reload them.  So here 
is my question.  If that is the case, is there anyway short of a reboot to 
force the static libraries to reload?

Thanks.

Charles Shaffer
Senior Analyst
NTN-Bower Corporation




php...@li...
Sent by: php...@li...
08/26/2008 12:06 PM
Please respond to php-java-bridge-users

 
        To:     php...@li...
        cc: 
        Subject:        Re: [Php-java-bridge-users] (no subject)


Hi,

well, the NoClassDefFound error means that an external reference is 
missing (an entity which has been available during the compilation of the 
class). 

The bridge has two different class loading mechanisms, one is the static 
loader, the other one is the dynamic loader which can load *some* java 
archives at run-time (via java_require(...) or java_autoload(...)).

I said "some" because dynamic class loading doesn't really work in Java, 
neither in Tomcat nor in J2EE; once the dynamically loaded classes are 
referenced by system libraries, you can't unload them anymore.


Regards,
Jost Boekemeier


__________________________________________________
Do You Yahoo!?
Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz 
gegen Massenmails. 
http://mail.yahoo.com 

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's 
challenge
Build the coolest Linux based applications with Moblin SDK & win great 
prizes
Grand prize is a trip for two to an Open Source event anywhere in the 
world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
php-java-bridge-users mailing list
php...@li...
https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users

Hi,

your class Hello is not public and it has no public constructor.


Regards,
Jost Boekemeier


__________________________________________________
Do You Yahoo!?
Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz gegen Massenmails. 
http://mail.yahoo.com 

Hi,

well, the NoClassDefFound error means that an external reference is missing (an entity which has been available during the compilation of the class). 

The bridge has two different class loading mechanisms, one is the static loader, the other one is the dynamic loader which can load *some* java archives at run-time (via java_require(...) or java_autoload(...)).

I said "some" because dynamic class loading doesn't really work in Java, neither in Tomcat nor in J2EE; once the dynamically loaded classes are referenced by system libraries, you can't unload them anymore.


Regards,
Jost Boekemeier


__________________________________________________
Do You Yahoo!?
Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz gegen Massenmails. 
http://mail.yahoo.com 

Hi,

The method *announce(String)* not exists but *announce()* yes ;-)

So try something like:

$hello = new Java('mani.Hello');
$hello->announce("test");

Java Program:

package mani;
class Hello {
       public void announce(*String message*) {
            System.out.println("Works! Receiving message: "+message);
      }
}


On Tue, Aug 26, 2008 at 9:14 AM, <
php...@li...> wrote:

> Hi,
>
> I am trying out PHP Java bridge with small example - A program to print the
> string on the screen.
>
> PHP Script:
>
> java_require("/disk2/v/apache/htdocs/VIRTUAL/
> mytoday.greynium.com/public_html/ftp/classes/");
>
> $hello = new Java('mani.Hello');
> $hello->announce("test");
>
> Java Program:
>
> package mani;
> class Hello {
>        public void announce() {
>             System.out.println("Works! ");
>       }
> }
>
> When I am trying to execute this PHP script, getting this error:
>
> PHP Fatal error:  Uncaught [o(Exception):"java.lang.Exception: Invoke
> failed: [c(Hello)]->announce(o(Request$PhpParserString)). Cause:
> java.lang.NoSuchMethodException: announce(o(Request$PhpParserString)).
> Candidates: [] Responsible VM: 1.5.0_04@http://java.sun.com/" at:
> #-5 php.java.bridge.JavaBridge.Invoke(JavaBridge.java:1117)
> #-4 php.java.bridge.Request.handleRequest(Request.java:536)
> #-3 php.java.bridge.Request.handleRequests(Request.java:582)
> #0 [internal function]: Java->__call('announce', Array)
> #1 /disk2/v/apache/htdocs/VIRTUAL/
> mytoday.greynium.com/public_html/ftp/TransferFiles.php(27)<http://mytoday.greynium.com/public_html/ftp/TransferFiles.php%2827%29>
> :
> Java->announce('Mani')
> #2 {main}]
>
>
> Can anyone please help me on this?
>
> Thanks
> Mani
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge
> Build the coolest Linux based applications with Moblin SDK & win great
> prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> php-java-bridge-users mailing list
> php...@li...
> https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users
>



-- 
Roger José Padilla Camacho

Hi,

I am trying out PHP Java bridge with small example - A program to print the
string on the screen.

PHP Script:

java_require("/disk2/v/apache/htdocs/VIRTUAL/
mytoday.greynium.com/public_html/ftp/classes/");

$hello = new Java('mani.Hello');
$hello->announce("test");

Java Program:

package mani;
class Hello {
        public void announce() {
             System.out.println("Works! ");
       }
}

When I am trying to execute this PHP script, getting this error:

PHP Fatal error:  Uncaught [o(Exception):"java.lang.Exception: Invoke
failed: [c(Hello)]->announce(o(Request$PhpParserString)). Cause:
java.lang.NoSuchMethodException: announce(o(Request$PhpParserString)).
Candidates: [] Responsible VM: 1.5.0_04@http://java.sun.com/" at:
#-5 php.java.bridge.JavaBridge.Invoke(JavaBridge.java:1117)
#-4 php.java.bridge.Request.handleRequest(Request.java:536)
#-3 php.java.bridge.Request.handleRequests(Request.java:582)
#0 [internal function]: Java->__call('announce', Array)
#1 /disk2/v/apache/htdocs/VIRTUAL/
mytoday.greynium.com/public_html/ftp/TransferFiles.php(27):
Java->announce('Mani')
#2 {main}]


Can anyone please help me on this?

Thanks
Mani

>> Why do you want to load your java libraries from both loaders?

Just guessing.

>> Please see the "loading libraries" section fom the README for details.

I found the section and have read it.  I am using an Ubuntu (Debian) 
install and the readme is discussing a redhat install, but from what I 
gather I believe my problem is related to 

Note that classes loaded from two different class loader instances
  cannot access each other.

I am finding that when I load a custom object that has an import in it, 
that I have to add a reference in the php code to the imported library in 
the custom object.  I have to admit that I am thoroughly confused at this 
point.  I am not sure why the PHP needs to be aware of the library that is 
used in the custom object.  Clearly I need to do some more reading about 
class loading.

Charles Shaffer
Senior Analyst
NTN-Bower Corporation




php...@li...
Sent by: php...@li...
08/26/2008 04:59 AM
Please respond to php-java-bridge-users

 
        To:     php...@li...
        cc: 
        Subject:        Re: [Php-java-bridge-users] (no subject)


Hi,


[using the static loader and the dynamic loader]
> I have moved all required jar and zip files to: [...]
> java_require("asjava.zip;msbase.jar;msutil.jar;bowerweb.jar;");

Why do you want to load your java libraries from both loaders?


> Fatal error: Uncaught
> Cause: java.io.IOException: Could not open jar file
> asjava.zip, reason: 
> error in opening zip file 
> Responsible VM: 1.6.0_03@http://java.sun.com/" at: 

Please see the "loading libraries" section fom the README for details.


Regards,
Jost Boekemeier



__________________________________________________
Do You Yahoo!?
Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz 
gegen Massenmails. 
http://mail.yahoo.com 

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's 
challenge
Build the coolest Linux based applications with Moblin SDK & win great 
prizes
Grand prize is a trip for two to an Open Source event anywhere in the 
world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
php-java-bridge-users mailing list
php...@li...
https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users

Hi,


[using the static loader and the dynamic loader]
> I have moved all required jar and zip files to: [...]
> java_require("asjava.zip;msbase.jar;msutil.jar;bowerweb.jar;");

Why do you want to load your java libraries from both loaders?


> Fatal error: Uncaught
> Cause: java.io.IOException: Could not open jar file
> asjava.zip, reason: 
> error in opening zip file 
> Responsible VM: 1.6.0_03@http://java.sun.com/" at: 

Please see the "loading libraries" section fom the README for details.


Regards,
Jost Boekemeier



__________________________________________________
Do You Yahoo!?
Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz gegen Massenmails. 
http://mail.yahoo.com