php-java-bridge-users Mailing List for PHP/Java Bridge (Page 2)

Hi,

>     1. Any way to release an object after finished with it on the PHP side?

PHP doesn't have a garbage collector. It uses a reference counter which cannot free certain
objects (and its associated Java peers).

However, this isn't a problem because each PHP script cannot run for more than 30 seconds. If the
PHP script terminates, all cycles are released automatically.


>     2. Any ini flags (java.persistent_connections=Off, for example) that could help clear the
> JavaBridge cache?  

On protocol level you could send a <U objectID /> to the back end. But PHP reference counter does
this automatically.


Regards,
Jost Boekemeier






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Hi,

  
> I have modified the file Java.inc like Antonio said in his message (Four Java.inc changes to get
> rid of STRICT warnings)

We don't think these changes are useful. Which problem do you have with the PHP/Java Bridge code?


> [15-Apr-2008 09:27:16] PHP Fatal error:  Call to a member function read() on a non-object in
> C:\Apache\htdocs\yannicka\java\Java.inc on line 390 

I am sorry, but I could not reproduce this problem with PHP/Java Bridge version 5.2.1 or 5.2.2.


If the problem persists, please set the log level to 4 or above and create a ticket; please use
http://sourceforge.net/tracker/?func=add&group_id=117793&atid=679233.



Regards,
Jost Boekemeier



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Hi,

first of all, this is a out of memory error. An error is not a exception and it shouldn't be
handled as such.

This error means that there's some bug in your application code, probably a thread permanently
referencing your object graph. Please see our FAQ for details/tips how to debug your code.


> @java_reset();

The above construct is used in our release tests, it should never ever be used in client code.
Please see our API documentation for details.


Regards,
Jost Boekemeier



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Hi,
I try to install PHP Java Bridge in a new environnement and I have a lot of problem.
I work with :
PHP 5.1.4
Java 1.5.08
Apache 2.0.59
Bridge 5.2.2 (with the include java.inc and the jar is executed on SERVLET_LOCAL:8080)
 
I installed it successfull on my labtop. But it doesn't want to run on my client environnement.
 
I have modified the file Java.inc like Antonio said in his message (Four Java.inc changes to get rid of STRICT warnings)
Now I have the following message :
----------------------------------------------------------------------------------------
[15-Apr-2008 09:27:16] PHP Fatal error:  Call to a member function read() on a non-object in C:\Apache\htdocs\yannicka\java\Java.inc on line 390 
----------------------------------------------------------------------------------------
when i try to execute this code :
----------------------------------------------------------------------------------------
require_once("java/Java.inc"); 

$test = new Java('java.lang.String','Hello'); 
echo "test=".$test; 
die(); 
----------------------------------------------------------------------------------------
 
Does anybody can help me, please ?
 
Thanks.
 
Y. Pedrono



 

Hi all,

I'm getting an OutOfMemory exception when executing a number of commands over the same PHP/Java Bridge connection....

We are running Java as a standalone process (simply run with "java -jar JavaBridge.jar SERVLET:9090 3 JavaBridge.log") and are accessing from PHP running inside Apache.  All on Windows, although we'll be testing on Linux once we get past this issue.

The code on the PHP side is:


$obj = new Java("our.java.Object");
$obj->returnMyArrayResult($arg1, $arg2);
@java_reset();

which gets called repeatedly within a loop.

The error is:


Apr 14 15:52:25 VMBridge FATAL: OutOfMemoryError
Apr 14 15:52:25 VMBridge FATAL: An error occured: java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
    at java.lang.StringCoding$StringDecoder.decode(Unknown Source)
    at java.lang.StringCoding.decode(Unknown Source)
    at java.lang.String.<init>(Unknown Source)
    at php.java.bridge.JavaBridge.getString(JavaBridge.java:2009)
    at php.java.bridge.PhpParserString.newString(PhpParserString.java:50)
    at php.java.bridge.PhpParserString.getString(PhpParserString.java:58)
    at php.java.bridge.JavaBridge.coerce(JavaBridge.java:688)
    at php.java.bridge.JavaBridge.Invoke(JavaBridge.java:1052)
    at php.java.bridge.Request.handleRequest(Request.java:410)
    at php.java.bridge.Request.handleRequests(Request.java:485)
    at php.java.bridge.http.ContextRunner.run(ContextRunner.java:140)
    at php.java.bridge.ThreadPool$Delegate.run(ThreadPool.java:60)

I've seen a number of threads talk about OutOfMemory problems, but no solution... I also saw the "How does the bridge handle OutOfMemoryErrors?" section in the docs, but no help.

My guess is that the JavaBridge class is holding onto all of the Java objects returned to PHP (even though java_release() is called in PHP) and that's what is causing the problem?  Also, looks like maybe JavaBridge.recycle() is the function we eventually want to get called?? Just guesses, though.  

A few questions too:
    1. Any way to release an object after finished with it on the PHP side?
    2. Any ini flags (java.persistent_connections=Off, for example) that could help clear the JavaBridge cache?  

Thanks for any thoughts/comments!

Orion Richardson

Hi,

> Caused by: java.io.IOException: /ressources/ldap.properties not found

create a jar file which contains "resources/ldap.properties" and copy the jar file into the
library path (either ~/lib or ...jre/lib/ext).


Regards,
Jost Boekemeier



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Le vendredi 11 avril 2008 à 13:02 +0200,
php...@li... a écrit :
> hello,
> 
> where to set the log4j.properties ? I can't use log4j with
> php-java-bridge because I can't redefine the classpath
> 

Ok I've found a solution alone :
I'm running on redhat 5:
mkdir /root/lib/
cp log4j.properties /root/lib/

But now I've quite the same probleme whith
a jndi property file: ldap.properties

stack trace
;
;
;
;
Caused by: java.io.IOException: /ressources/ldap.properties not found

And naturraly I've set the file 
in   /root/lib/ressources/ldap.properties


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Ligne directe : 01 56 43 37 33

hello,

where to set the log4j.properties ? I can't use log4j with
php-java-bridge because I can't redefine the classpath

-- 
Arnaud Tisset
- CECURITY.COM - http://www.cecurity.com
Protection des données, Archivage Légal et Traçabilité
arn...@ce...
Ligne directe : 01 56 43 37 33

Hi,

> 
> I'll take a look at JPersistenceAdapter.php tmw, 

the code is here:

http://php-java-bridge.cvs.sourceforge.net/*checkout*/php-java-bridge/php-java-bridge/php_java_lib/JPersistence.php


Regards,
Jost Boekemeier



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Hi,

Cache_Lite has integrated serialize function, and I guess it's
basically a wrapper of the php serialize function. I can cache and
retrieve the object without problem. The issue is if I leave some java
objects in the cache without using for a while, they become invalid or
expired or sth, as you could see from the error message.

I'll take a look at JPersistenceAdapter.php tmw, but please let me
know if I was wrong, thanks.

Regards,

Rong

On Tue, Apr 8, 2008 at 9:14 PM,
<php...@li...> wrote:
> Hi,
>
>
>  > and I cached (using PEAR Cache_Lite) the Java object
>
>  You cannot cache java objects this way. Please serialize it.
>
>  Please see the JPersistenceAdapter.php and the serialize php test from the php5 test folder for an
>  example.
>
>
>  Regards,
>  Jost Boekemeier
>
>
>
>
>
>
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Hi,

> and I cached (using PEAR Cache_Lite) the Java object

You cannot cache java objects this way. Please serialize it. 

Please see the JPersistenceAdapter.php and the serialize php test from the php5 test folder for an
example.


Regards,
Jost Boekemeier






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Hi,

I'm wondering whether the connection between PHP scripts/Apache and
the Java bridge has a timeout? I'm using the standalone mode and I
cached (using PEAR Cache_Lite) the Java object created with the "new
Java(...)" call, so the object can be used to serve more than one
request. It worked well initially, until after some time (probably
some idle time), the cached object seemed no longer valid, and yielded
the following error:

Fatal error: Uncaught [[o:Exception]:"java.lang.Exception: Invoke
failed: [[o:JavaBridge]]->deserialize((o:String)[o:String],
(o:int)[o:Integer]). Cause: java.lang.IllegalArgumentException:
Session serialID 1 expired. Responsible VM:
1.6.0_04@http://java.sun.com/" at: #-9
php.java.bridge.JavaBridge.deserialize(JavaBridge.java:1744) #-8
sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) #-7
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
#0 java.inc(259): java_ThrowExceptionProxyFactory->getProxy(1, NULL,
true) #1 java.inc(409): java_Arg->getResult(true) #2 java.inc(415):
java_Client->getWrappedResult(true) #3 java.inc(619):
java_Client->getResult() #4 java.inc(1717):
java_Client->invokeMethod(0, 'deserialize', Array) #5 [internal
function]: java_JavaProxy->__wakeup() #6
/usr/share/php/Cache/Lite.php(347): unserialize('O:4:"Java":1:{s...')
#7 /home/rong/trunk/lib/fts.php(15):
Cache_Lite->get('BESearcher-cour...') #8
/home/rong/trunk/lib/modules/search.php(2 in java.inc on line 222

Any idea about how to make this timeout unlimited? or is this (caching
java object) a good way to maintain persistent object across the
bridge? thanks.

Regards,
Rong

I will see if I can follow the instructions there. A lot of this is
completely alien to me at the moment!

Thanks,

graham

On Sun, Apr 6, 2008 at 6:28 PM, <php...@li...>
wrote:

> Hi,
>
> >
> http://php-java-bridge.sourceforge.net/pjb/generic_readme.php?banner=banner10&title=Pure%20PHP%20Implementation&filepath=java/README)--orcan<http://php-java-bridge.sourceforge.net/pjb/generic_readme.php?banner=banner10&title=Pure%20PHP%20Implementation&filepath=java/README%29--orcan>
>
> the information on the web site is outdated. Please ignore it.
>
>
> The relevant information is contained in the binary download archive.
>
>
> Regards,
> Jost Boekemeier
>
>
>
>      Lesen Sie Ihre E-Mails jetzt einfach von unterwegs.
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>
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> _______________________________________________
> php-java-bridge-users mailing list
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> https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users
>

Hi,

can you please create a ticket (please use
http://sourceforge.net/tracker/?func=add&group_id=117793&atid=679233) and set the log level to 4
or above and attach the log to your ticket?


Regards,
Jost Boekemeier



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Hello

I have some third party code that I can manipulate in Eclipse.
An array returned from a function inside Eclipse will return the expected information.

However, the same function called via the bridge from PHP will return the correct number of elements to the array, but they are empty (i.e. NULL).  Hard coded values can be read ok, so it appears that everything is working.  Any ideas would be appreciated.

I am running:

Apache 2.2.6
PHP 5.2.5
MS Windows server 2003 enterprise edition SP2

Using JavaBridge back-end version: 3.2.1b

Put the JavaBridge.war into the autodeploy folder for the J2EE application server

Copied the php-5.0-java-x86-windows.dll to my PHP/Ext directory and renamed it php_java.dll

Copied my third party .jar files to the JavaBridge.war.

Compiled and added extra jars to the JavaBridge.war

Put require ("java/java.php"); at the start of my script.
Many thanks

Martin

Hi,

>http://php-java-bridge.sourceforge.net/pjb/generic_readme.php?banner=banner10&title=Pure%20PHP%20Implementation&filepath=java/README)--orcan

the information on the web site is outdated. Please ignore it.


The relevant information is contained in the binary download archive.


Regards,
Jost Boekemeier



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Hi,

I am using windows XP and php 5.2.5.x and would like to use the bridge in a
project I am working on. Is my only option now to use the php version--I was
a bit concerned by the 10 times slower than the native C version comment on
the website (
http://php-java-bridge.sourceforge.net/pjb/generic_readme.php?banner=banner10&title=Pure%20PHP%20Implementation&filepath=java/README)--orcan
I still get hold of .dll files? As far as I can tell the
java-x86-windows.dll (which is what the tutorials I have found are using)
was last included in the 3.1.8 distribution which doesn't seem to be on
sourceforge.

Thanks in advance for any time.

graham

Hi,

[java_require]
> PHP request, are they loaded only once by the JavaBridge or are they
> loaded every time?

They are checked each time the php script is invoked. Usually they're loaded only once.

 
> Follow-up question: if they are loaded only once, is it possible to
> 'unload' them 

This is neither necessary nor possible.


However, Java class loading is outside of the PHP/Java Bridge scope, please use the class loading
mechanism provided by your J2EE server or servlet engine.


Regards,
Jost Boekemeier



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Hi:

If I call java_require() and include about 6 or 7 .jar files with each
PHP request, are they loaded only once by the JavaBridge or are they
loaded every time?

Follow-up question: if they are loaded only once, is it possible to
'unload' them from the JavaBridge memory? I imagine with java_reset(),
right?

Cheers,


Antonio