php-java-bridge-users Mailing List for PHP/Java Bridge (Page 3)

Hi Jost,

I see the following error:

*Fatal error*: Maximum execution time of 60 seconds exceeded in *
http://127.0.0.1:8080/slJavaBridge/java/Java.inc* on line *818

*For now, simulated this error by getting my backend Java Class not to
return and I get this error. I am a beginner in this web-programming domain.
If you can pls point me to the PHP settings for this too..it would be great!
*

regds,
Bharti
*
On Sat, Mar 8, 2008 at 7:01 PM, <php...@li...>
wrote:

> Hi,
>
> > "maximum time of 60 seconds exceeded" from JavaBridge
>
> Are you sure?
>
> I think this error message comes from PHP, not from the JavaBridge. Please
> see the PHP
> documentation for details.
>
>
> Regards,
> Jost Boekemeier
>
>
>
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>

Hi,
   
  >> $_SESSION['xy']="someValue";
>> $_SESSION['instance']=$repository;

>Depending on your PHP version it may or may not be possible to store Objects into the >session
>store. 
  
I've solved this issue like this:
   
  page 1:
$_SESSION['user'] = serialize($user);

page 2:
$user = unserialize($_SESSION['user']);

  Regards,
  Zoran

php...@li... wrote:
  Hi,

> $repository=new Java("depths.moodle.RepositoryFactory");
> if (!isset($repository)){

The above isset(..) is wrong and obsolete. new ClassName() cannot return null.
Furthermore Java NULL values are represented by NULL proxies, not by PHP null or void.


> $_SESSION['xy']="someValue";
> $_SESSION['instance']=$repository;

Depending on your PHP version it may or may not be possible to store Objects into the session
store. 


> protocol error: , Invalid document end at col 22. Check the back end log for details.
> Could you please indicate what did cause this error?

Sorry, but I can't read your back end log file. :)


Regards,
Jost Boekemeier



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Thanks again! I tried another approach and I guess I found the reason.
Right now I put everything inside a java class and it runs in java
with no problem. But once I try to run it in php, it fail to load the
file. Here's how it looks like.

Test1.java
import net.sourceforge.jFuzzyLogic.FIS;
import net.sourceforge.jFuzzyLogic.rule.FuzzyRuleSet;

public class Test1{
	private FIS aFIS;
	private FuzzyRuleSet aRuleSet;
	public Test1(){}
	public String init(){
		String fileName = "tipper.fcl";
		aFIS = FIS.load(fileName,true);
		if( aFIS == null ){
			return "Can't load file: '" + fileName + "'";
		}
		aRuleSet = aFIS.getFuzzyRuleSet();
		if(aRuleSet == null){
			return "Can't load rule set";
		}
		return "Initialization succeed";
	}
	public String setRule(double x, double y){
		if(aRuleSet == null){
			return "Can't access rule set";
		}
		else{
			aRuleSet.setVariable("service", x);
			aRuleSet.setVariable("food", y);
			aRuleSet.evaluate();
			return "" + aRuleSet.getVariable("tip").defuzzify();
		}
	}
	public String printRuleSet(){
		if(aRuleSet == null){
			return "Can't print rule set";
		}
		else{
			return aRuleSet.toString();
		}
	}
}

test1.php
<?php

	if(!extension_loaded("java"))
		require_once("JavaBridge/java/Java.inc");
	java_require(".;jFuzzyLogic_1_2_1.jar;Test1.jar");
	try{
		$temp = new Java("Test1");
		echo "<p>" . java_inspect($temp) . "</p>";
		echo "<p>" . $temp->init() . "</p>";
		echo "<p>" . $temp->setRule(3, 7) . "</p>";
		echo "<p>" . $temp->printRuleSet() . "</p>";
	} catch(JavaException $ex){
		$exStr = java_cast($ex, "string");
		echo "<p>Exception occured; mixed trace: " . $exStr . "</p>";
	}

?>

and the output
[class Test1: Constructors: public Test1() Fields: Methods: public
boolean java.lang.Object.equals(java.lang.Object) public native int
java.lang.Object.hashCode() public java.lang.String
java.lang.Object.toString() public java.lang.String Test1.init()
public java.lang.String Test1.setRule(double,double) public
java.lang.String Test1.printRuleSet() public final native
java.lang.Class java.lang.Object.getClass() public final native void
java.lang.Object.notify() public final native void
java.lang.Object.notifyAll() public final void java.lang.Object.wait()
throws java.lang.InterruptedException public final void
java.lang.Object.wait(long) throws java.lang.InterruptedException
public final native void java.lang.Object.wait(long,int) throws
java.lang.InterruptedException Classes: ]

Can't load file: 'tipper.fcl'

Exception occured; mixed trace: java.lang.Exception: Invoke failed:
[[o:Test1]]->setRule((o:double)[o:PhpExactNumber],
(o:double)[o:PhpExactNumber]). Cause:
java.lang.IllegalArgumentException VM: 1.5.0@http://www.ibm.com/


All files are sitting in the same directory. Any idea? Thanks



On Sat, Mar 8, 2008 at 5:48 AM,
<php...@li...> wrote:
> > [[o:Request$PhpNull]]->toString.
>
>  Instead of a NullPointerException we should throw a custom exception which explains that the user
>  has passed a PHP null value to the bridge.
>
>
>
>
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Hi,

> Can you please unsubscribe me from this list?

Sure. Can you please send me your name or e-mail account, so that we can remove you from the list?


Regards,
Jost Boekemeier



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Can you please unsubscribe me from this list?
I tried twice from the control panel and never got the verification e-mail.

Thank you

> [[o:Request$PhpNull]]->toString.

Instead of a NullPointerException we should throw a custom exception which explains that the user
has passed a PHP null value to the bridge.



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Hi,

>      $repository=new Java("depths.moodle.RepositoryFactory");
>     if (!isset($repository)){

The above isset(..) is wrong and obsolete. new ClassName() cannot return null.
Furthermore Java NULL values are represented by NULL proxies, not by PHP null or void.


>   $_SESSION['xy']="someValue";
> $_SESSION['instance']=$repository;

Depending on your PHP version it may or may not be possible to store Objects into the session
store. 


> protocol error: , Invalid document end at col 22. Check the back end log for details.
>   Could you please indicate what did cause this error?

Sorry, but I can't read your back end log file. :)


Regards,
Jost Boekemeier



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Hi,

> "maximum time of 60 seconds exceeded" from JavaBridge

Are you sure?

I think this error message comes from PHP, not from the JavaBridge. Please see the PHP
documentation for details.


Regards,
Jost Boekemeier



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Hi,

> the entry point of the bridge. But how do I use it. It seems that I have to

With Runner.getRequiredInstance(). This allocates a Java continuation which has full access
to your Java objects.

Please see the INSTALL.STANDALONE document for details.


> I was actually thinking about using something like a stub on the php side,
> which would connect to another JVM where my Java object is already
> instanciated (something like RMI actually). 

You could as well use RMI from within your Java continuation, please see the J2EE examples from
the source download folder.

But why don't you simply call into the Java continuation and use the objects already allocated by
your Java application?


Regards,
Jost Boekemeier



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> Thank you! Yes, I understand that.

No, I don't think so. :)

Please read the error message and your code carefully.


Regards,
Jost Boekemeier



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Hi, 
   
  When I try to create an Java instance I got this strange error message. It doesn't cause my program stop to work, but I'm confused about it, and why does it happen. Here is the complete code:
   
  try{
     $repository=new Java("depths.moodle.RepositoryFactory");
    if (!isset($repository)){
              throw new Exception("Could not create repository!");
       }
 } catch (Exception $e){
      echo "Error (File: " .$e->getFile().", line ".$e->getLine()."): ".$e->getCause() ." end of  message. <br>";
      echo "<br> ".$e->getMessage();
      echo "<br> ".$e;
 }

  $_SESSION['xy']="someValue";
$_SESSION['instance']=$repository;
   
  echo "Session xy=".$_SESSION['xy'];
echo "<br>";
if (isset($_SESSION['instance']))
{echo "instance exists";
echo "<br>";}
else{
 echo "instance does not exists";
}
?>
   
  Output of this page is as follows:
   
  Session xy=someValue
instance exists
protocol error: , Invalid document end at col 22. Check the back end log for details.
   
  Could you please indicate what did cause this error?
   
  Thanks,
  Zoran

       
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Hi,

I am using PHP/Java Bridge on Windows under PHP/Apache/Tomcat configuration.
On calling some of my JavaClasses from PHP, I observe an error saying
"maximum time of 60 seconds exceeded" from JavaBridge. Is this response
timeout parameter configurable? If Yes, Pls let me know where can I alter
it.

regds,
Bharti

Thank you! Yes, I understand that. Actually, I have already taken out
the if statment

if( $fuzzyRuleSet == null ) {

so I am running

$temp = $fuzzyRuleSet->toString();

directly, but it still give me an nullpointerexception. The method can
run in java just don't understand how come it cannot run in php. Any
other suggestions? Please! Thanks again!



On Fri, Mar 7, 2008 at 12:34 AM,
<php...@li...> wrote:
> > if( $fuzzyRuleSet == null ) {
>
> > $temp = $fuzzyRuleSet->toString();
> >
> > Even I take out the null test, the error still remains. Can anyone help? Thanks!
>
> The same argument applies to the above code, of course.
>
> Use
>
>  (string)$fuzzyRuleSet == null
>
> or better
>
>  is_null (java_values ($fuzzyRuleSet))
>
>
> for the test.
>
>
> Regards,
> Jost Boekemeier
>
>
>
>      Lesen Sie Ihre E-Mails auf dem Handy.
> www.yahoo.de/go
>
> -------------------------------------------------------------------------
>
> This SF.net email is sponsored by: Microsoft
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>

Hmm, well me again. Sorry to bother but i feel like a dumb. I can't get rid
of my problem and i don't really get all the faces of how to use the bridge
in the way i want to use it.

Thanks for the various INSTALL files which i haven't seen at first. It
helped me a bit though. What I understood is that the JavaBridgeRunner is
the entry point of the bridge. But how do I use it. It seems that I have to
open the socket myself? I am able to make my php communicates with my java
class and get the runner but after then...

I was actually thinking about using something like a stub on the php side,
which would connect to another JVM where my Java object is already
instanciated (something like RMI actually). Then I would have been able to
catch my parameters through that socket. Am I completely wrong and should
search in another direction or is it just that i missed something in the
'how to use' process?

Would you mind explaining me what i got wrong?

Thanks for your help

2008/3/4, php...@li... <
php...@li...>:
>
> Please see the INSTALL.STANDALONE for details how to invoke methods within
> a running Java process.
>
>
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-- 
#  !! brOl_oUilLe -->
<< bro...@gm... >>

Hi,

> $session = java_session();
> echo $session->getId();
> 
> 
> Uncaught [[o:Exception]:"java.lang.Exception: Invoke failed:
> [[o:RemoteHttpSessionFacade]]->getId. Cause: java.lang.NoSuchMethodException: getId().


the RemoteHttpSessionFacade doesn't have a getId(). Please see the API documentation for details.
http://php-java-bridge.cvs.sourceforge.net/*checkout*/php-java-bridge/php-java-bridge/server/documentation/API/index.html?revision=1.17

What you want is an instance of the HttpSession, not the HttpSessionFacade. The Session can be
obtained from the request object.


Regards,
Jost Boekemeier



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Hi,

> of the java/php bridge, but it sounds like this is nothing we really
> have to worry about then?

the bridge simply forwards the Java statements as soon as it receives them.

Other technologies such as Soap or XML-RPC have a much higher overhead. -- mod_jk goes even
further and forwards the entire script to the back end.


Regards,
Jost Boekemeier



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Right - I tried  but apparently the session per java_session() is not aware of such methods.

$session = java_session();

echo $session->getId();


Uncaught [[o:Exception]:"java.lang.Exception: Invoke failed: [[o:RemoteHttpSessionFacade]]->getId. Cause: java.lang.NoSuchMethodException: getId(). Candidates: [] Responsible VM: 1.5.0_09@http://java.sun.com/" at:\n#-5 php.java.bridge.JavaBridge.Invoke(JavaBridge.java:1040)\n#-4 php.java.bridge.Request.handleRequest(Request.java:409)\n#-3 php.java.bridge.Request.handleRequests(Request.java:485)\n#0 http://192.168.15.62:8080/JavaBridge/java/Java.inc(259): java_ThrowExceptionProxyFactory->getProxy(5, 'java.lang.Strin...', true)\n#1 http://192.168.15.62:8080/JavaBridge/java/Java.inc(409): java_Arg->getResult(true)\n#2 http://192.168.15.62:8080/JavaBridge/java/Java.inc(415): java_Client->getWrappedResult(true)\n#3 http://192.168.15.62:8080/JavaBridge/java/Java.inc(619): java_Client->getResult()\n#4 http://192.168.15.62:8080/JavaBridge/java/Java.inc(1730): java_Client->invokeMethod(1, 'getId', Array)\n#5 http://192.168.15.62:8080/JavaBridge/java/Java.inc(1843): java_JavaProxy->__call('getId', Array)

Thanks for the reference to the j2ee docs tho - those are always hard to come by.

~tim




Hi,

> I see the context and the session, however I am having trouble getting at the actual value of
> the java session id.

=> http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/http/HttpSession.html#getId()


Hope it helps.


Regards,
Jost Boekemeier

i am not concerned about the java backend, i was just concerned if
there for some reason overhead (in terms of speed/memory) is because
of the java/php bridge, but it sounds like this is nothing we really
have to worry about then?

cheers,

RJ


On 3/6/08, php...@li... > Well, the
bridge simply forwards the Java calls to the J2EE back end.
>
> If one back end cannot handle the load anymore, just add another one. Please
> see the "How do I set
> up a J2EE cluster" from our FAQ for details.
>
>
> Regards,
> Jost Boekemeier
>

thanks for the reply. i could be wrong, it's like moving the overhead to the
script rather than leaving it in java.so

On Fri, Mar 7, 2008 at 7:31 PM, <php...@li...>
wrote:

> Hi,
>
> >, why
> > can't you push all the java functions into java.so?
>
> Because of the additional overhead for class registration.
>
> Do you really want to create a Java class in each of your scripts?
>
>
> Regards,
> Jost Boekemeier
>
>
>
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>

> if( $fuzzyRuleSet == null ) {

> $temp = $fuzzyRuleSet->toString();
> 
> Even I take out the null test, the error still remains. Can anyone help? Thanks!

The same argument applies to the above code, of course.

Use 

  (string)$fuzzyRuleSet == null 

or better 

  is_null (java_values ($fuzzyRuleSet))


for the test.


Regards,
Jost Boekemeier



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Hi,

>, why
> can't you push all the java functions into java.so?

Because of the additional overhead for class registration.

Do you really want to create a Java class in each of your scripts?


Regards,
Jost Boekemeier



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Thanks for the help. But the

if( $fis == null )

is not the cause of the error. The error is from

$temp = $fuzzyRuleSet->toString();

Even I take out the null test, the error still remains. Can anyone help? Thanks!



On Wed, Mar 5, 2008 at 1:57 AM,
<php...@li...> wrote:
> > > if( $fis == null ) {
>  >
>  > The above test is invalid. $fis is an object representing Java NULL, not a PHP null pointer.
>
>  BTW: a PHP null value should be tested with is_null(...), see your PHP documentation
>
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Hi,

thanks, that explains it. I was just wondering why would you call it a bug:)
- cos having to include Java.inc in every script is really annoying, why
can't you push all the java functions into java.so?

Rong


On Fri, Mar 7, 2008 at 3:23 AM, <php...@li...>
wrote:

> Hi,
>
> > well, for v4 and v5.0 i didn't need to include Java.inc,
>
> yes, this was a bug in java.so. Please see the NEWS file for version 5.2.0for details.
>
> However, unless you use PHP 4, you need to include Java.inc, if you want
> to access the Java class
> or the java() function.
>
>
> Regards,
> Jost Boekemeier
>
>
>
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>

Hi,

> Now, our main concern is the performance of the php/java bridge; our
> website will have many visitors (and logged in users), and we would
> like to know that we do not get into performance problems further down
> the road.

Well, the bridge simply forwards the Java calls to the J2EE back end.

If one back end cannot handle the load anymore, just add another one. Please see the "How do I set
up a J2EE cluster" from our FAQ for details.


Regards,
Jost Boekemeier



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Hi,

> well, for v4 and v5.0 i didn't need to include Java.inc,

yes, this was a bug in java.so. Please see the NEWS file for version 5.2.0 for details.

However, unless you use PHP 4, you need to include Java.inc, if you want to access the Java class
or the java() function.


Regards,
Jost Boekemeier



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