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

Am I doing something wrong when calling the java_context() function?

I first tried to use
java_context()->*getHttpServletResponse<http://php-java-bridge.sourceforge.net/pjb/server/documentation/API/php/java/servlet/Context.html#getHttpServletResponse%28%29>
*() but that returned null.

I then tried calling java_context()->getAttribute('javax.script.filename'),
but that throws an Exception, complaining about Context.java:80. (stack
trace pasted below)

I've got sample code I can send to the mailing list of other want to try and
duplicate it. I'm running Apache 2.2, PHP 5.2.0, Tomcat 5.5, and PHP/Java
Bridge 3.2.1

java stack trace: [o(ByteArrayOutputStream):"java.lang.Exception:
Invoke failed: [o(RemoteContext)]->getAttribute((String)o(String)).
Cause: java.lang.NullPointerException Responsible VM:
1.6.0@http://java.sun.com/
	at php.java.servlet.Context.getAttribute(Context.java:80)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at php.java.bridge.JavaBridge.Invoke(JavaBridge.java:1114)
	at php.java.bridge.Request.handleRequest(Request.java:342)
	at php.java.bridge.Request.handleRequests(Request.java:388)
	at php.java.bridge.http.ContextRunner.run(ContextRunner.java:188)
	at php.java.bridge.BaseThreadPool$Delegate.run(BaseThreadPool.java:66)
Caused by: java.lang.NullPointerException
	... 10 more
"]

Hi,

> running into an odd situation. When I fire up the
> bridge it spawns 10 
> child processes

Not really. It should start only one Java VM, attached
to the HTTP server.


, but whenever I run a php script
> that requires the 
> bridge, it seems to spawn more children but never
> releases them.

It uses a thread pool. Please see our FAQ for details.
Is there a problem with this?


Regards,
Jost Boekemeier




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Hi,


> I am experiencing problems when trying to install
> the bridge on Red Hat EL
> Linux w/ PHP4 and Java5.

Please use the compiled java.so for RHEL3 instead. The
last release was 2.0.8:

http://sourceforge.net/project/downloading.php?group_id=117793&use_mirror=mesh&filename=php-java-bridge-2.0.8-1.RHEL.i386.rpm&155133



> installation, any command line
> statement is terminated with a "Segmentation fault"
> message.

This sounds as if it crashes in the MINIT function,
because all variables are set to 0. We know that some
gcc versions have (had?) a strange bug which caused
this. It is (was) probably a bug in the optimizer: -O0
fixes this, so does a reboot(!) and recompilation.
Someone has reported this on FreeBSD and sent us the
java.so created before and after the reboot. In the
first java.so the init section was missing.

Can you please open a problem report and attach the
created java.so at the end of this ticket?

Please also report the gcc version and the conditions
when this problem appears and the hardware you use.


Regards,
Jost Boekemeier


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