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

Hello,

first of all this thread discovered some new stuff again for me as well :->

php...@li... schrieb:
> Hi Felix,
> 
> [java.so for backward compatibility]
>> Well, this sounds for me like a bad april fool.
> 
> Bear in mind that I have written the PHP/Java Bridge in 2003. PHP 4
> didn't have the functionality required to access Java, so a piece of
> glue code called "java.so" was necessary.

If it was needed only back then, why is it still part of 'make install',
'install.sh'?

I assume the only purpose of 'java.so' now is to enable the
httpd(apache) to start a JVM as child, which could serve as a backend
for the php-java-bridge?

>> So all (current) articles that describe the use of the extension
>> are just crap?
> 
> I don't think so. -- If you find a bug in our documentation, please
> file a bug report.

'INSTALL.LINUX' from CVS says:
<quote>The "java.so" file contained in the Linux binary packages is the
PHP "Java.inc" compiled to native code</quote>

So,that's not true anymore, is it?

Thx and greets,
Peter

Hi,

probably your Java object does not save or restore all of its state when the tomcat back end is restarted.

Either remove the distributable flag from the configuration or make your Java object(s) persistent.



Regards,
Jost Boekemeier



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Hi,
 
I'm confused with a java session variable behaviour. It is an instance of java class created on the following manner:
 
$session=java_session();
$rep=new Java("depths.moodle.RepositoryFactory");


$session->put("rep",$rep);
 
When I restart Tomcat and try to identify if this variable exists: 
 
$rep=$session->get("rep");
if (is_null(java_values($rep))){
 
if condition is not true, that is, rep variable is not null. However, this value is not an java object that is created before, so I can't use it. In my application, I want to use this variable if it exists or to create a new instance if it does not exists, but I can't check it in this way. 
 
Can you explain me what is the problem with this approach, please?
 
Zoran
 


      

hi,

On Wed, Jul 2, 2008 at 5:06 AM,
<php...@li...> wrote:
>> gcj (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-20)
>
> supports only 32 Bit code generation.

did not realize that; thought it gen'd 64bit :-/  good to know.

> Please use a real Java implementation instead. -- GCJ compilation is a waste of time, anyway. The JIT compiler from the OpenJDK generates code which executes up to 5 times faster than the code generated from GCJ.

i've installed IBM's jdk se 6 locally,

 which java
  /home/sc/jdk16-ibm/bin/java
 java -version
  java version "1.6.0"
  Java(TM) SE Runtime Environment (build pxa6460sr1-20080416_01(SR1))
  IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Linux amd64-64
jvmxa6460-20080415_18762 (JIT enabled, AOT enabled)
  J9VM - 20080415_018762_LHdSMr
  JIT  - r9_20080415_1520
  GC   - 20080415_AA)
  JCL  - 20080412_01

and the php-java-bridge builds "--with-java=$HOME/jdk16-ibm", installs
without error.

i'm on a shared Apache host, and note that on nav to my site, "top" shows,

   1463 sc 15 0 81800  38m  25m S 0  0.2   0:00.12 gij-4.1

which is the gcc JIT, of course.

as the host/server ENV is independent of _my_ ENV, i'm guessing that
to get the server to invoke the IBM JIT for "my"
php-java-bridge/jjava.so extension, i need to specify some AddHandler
directive in my .htaccess ?

if so, are there any docs/examples on this ? (haven't found any yet ...)

or, different method?

thanks!

Hi,

probably 

> gcj (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-20)

supports only 32 Bit code generation.

Please use a real Java implementation instead. -- GCJ compilation is a waste of time, anyway. The JIT compiler from the OpenJDK generates code which executes up to 5 times faster than the code generated from GCJ.


Regards,
Jost Boekemeier




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hi,

i'm doing a 1st install of php-java-bridge_5.2.2.

reading @:

	http://php-java-bridge.sourceforge.net/doc/faq.php

i note:

	#Can I use Java libraries without installing java?
	
	Yes. On a GNU operating system (e.g.: GNU/Linux, GNU/windows (aka
"cygwin"), ...) you can use the GCC compiler to compile Java classes
to native code. Simply compile the C based extension and omit the
--with-java= configure option. The bridge will use the libgcj library,
which is part of the GNU gcc compiler. This library also uses much
less system resources (memory, files) than a "real" Java VM.

on my box,

	uname -o
		GNU/Linux  -> Debian
	gcj --version
		gcj (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-20)
	autoconf --version
		autoconf (GNU Autoconf) 2.62
	libtool --version
		ltmain.sh (GNU libtool) 2.2.4
	automake --version
		automake (GNU automake) 1.10.1
	which java
		/home/sc/jdk/bin/java
	java -version
		java version "1.6.0_06"
		Java(TM) SE Runtime Environment (build 1.6.0_06-b02)
		Java HotSpot(TM) 64-Bit Server VM (build 10.0-b22, mixed mode)

but @,

	cd php-java-bridge-5.2.2
	phpize
	./configure

the process dies at,

	...
	FATAL: Native compilation not supported on this system.
	Install a java SDK and run: ./configure --with-java=<JAVA_HOME>
	Back-end configuration failed.
	Please install the recommended autoconf, libtool and automake versions
	or disable back-end configuration and use the pre-compiled J2EE back-end:
	
		./configure --disable-backend --with-java=<JAVA_HOME>
	
	configure: error: ./configure.gnu failed for server

i thought i had the prereqs taken care of for a java-less install.

what am i missing?

thanks!