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

Hello Jost,

thank you very much for your very helpful answer. I am really happy  
about the fact that i understood the way the bridge is working. in  
fact it is not hard to understand but the lots of wrong articles made  
it hard to me ;-)

> If you find a bug in our documentation, please file a bug report.
no, i did not want to say that your doc is buggy. I meant the other  
articles, e.g. from phpmagazin and other sources.

But i looked again on your page and found nowhere the hint that the  
extension is not needed anymore. So it is confusing.

thank you again for your great endurance and your great work ....

best regards,

felix

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.


> 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.


> Ok, so all that is needed, is the [...] java/Java.inc stuff and 
> the war-file.


Yes. You copy the JavaBridge.war to the J2EE server or Tomcat, wait one second until the JavaBridge directory appears, and then copy the  JavaBridge directory over to the HTTP server document root. 


You don't need to use our Java class implementation, if you don't want to. Please see our FAQ to see another Java class definition which fits into one (long) line.


Regards,
Jost Boekemeier



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> sorry for being overly terse.
No problem ;-)

> It's a dummy, used for backward compatibility only. People expect a  
> PHP java extension, so we provide one which doesn't do anything  
> useful.

Well, this sounds for me like a bad april fool. So all (current)  
articles that describe the use of the extension are just crap? well,  
good to know. so i have to rewrite a part of my chapter (diploma  
thesis) about the bridge :(

Ok, so all that is needed, is the java/Java.inc stuff an VM and the  
JavaBridge.jar ... or if i use the j2ee-version i need the  
java/Java.inc stuff and the war-file.
Is that right?

The implementation of the Java class just communicates with the  
javabridge-servlet by using the bridge protocol and that's all the  
magic? sounds easy but you and i know...it's great work.

Please tell me if my understanding of the way the bridge works is  
wrong. At the moment i am pretty confused by all the wrong information.

Thank you for your help,

have a nice day,

Felix

Hi Felix,

sorry for being overly terse. But the PHP/Java Bridge is complete as it is. Instead of adding more features I'd like to remove features which are confusing or not commonly used.


> But what is the difference by using the extension?

It's a dummy, used for backward compatibility only. People expect a PHP java extension, so we provide one which doesn't do anything useful.


> I am sorry for my maybe dumb questions but i read over 5
> different  articles about the bridge and every article provides
> totally different  information.

Yes. Most of the information you find on the internet are outdated, simply false or at least misleading.


Regards,
Jost Boekemeier



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Ow my goodness! Never thought that the answer to my question can be  
found in the FAQ.
Thank you so much!

But now I am even more confused. I read that i can use the php/Java  
bridge without using the php-extension. The text said that i only have  
to include java/Java.inc and it works without extension (so it does!).  
But what is the difference by using the extension? Does this included  
code automatically detect the installed extension and use ist?

I am sorry for my maybe dumb questions but i read over 5 different  
articles about the bridge and every article provides totally different  
information.

felix
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Hi,

well, the bridge works correctly under fedora 9.

However, since the LINUX instructions cause serious confusion, I will remove  the LINUX folder from the binary download.


Regards,
Jost Boekemeier


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Hi,

> But I thougt this class Java is provided by the extension

No, java.so doesn't contain a Java class. It only starts a Java VM as a sub process of the Apache or IIS Web-Server.

If you want to access the Java process, you need to use some Java class definition. 

Please see our FAQ for details.


Regards,
Jost Boekemeier




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Hi,

i've got one stupid problem that could surely be resolved very easyly  
but I have no clue about the source of this problem. I compiled the  
java.so extension and loaded it. The output of phpinfo() shows that  
the extension is loaded properly and running. The test.php works fine  
but it uses java/Java.inc. I want to use the extension itself but  
everything I try failes with "Fatal error: Class 'Java' not found....".

But I thougt this class Java is provided by the extension so that it  
can be called without including Java.inc?! What is the problem?

This is one of the many example lines I tried to execute:

  $string = new Java("java.lang.String");

Thank you in advance.

felix

Issuing the following on Centos 4.5 x86_64:
[root@red-9 downloads]# rpmbuild -tb php-java-bridge_5.2.2.tar.gz


Make then stops on the following output:

...
cat JavaRaw.inc | sed -f append.sed | sed
's/JAVA/MONO/g;s/java/mono/g;s/Java/Mono/g;s/updateJarLibraryPath/update
LibraryPath/;s/^.*do not delete this line.*$/$name="cli.".$name;/;'
>META-INF/java/Mono.inc
gcj -w -ftarget=1.4 -classpath .:script-api.jar -C
php/java/bridge/*.java php/java/bridge/http/*.java
jc1: error: unrecognized command line option "-ftarget=1.4"
make[1]: *** [MonoBridge.exe] Error 1
make[1]: Leaving directory
`/usr/src/redhat/BUILD/php-java-bridge-5.2.2/server'
make: *** [/usr/src/redhat/BUILD/php-java-bridge-5.2.2/modules/stamp]
Error 2
error: Bad exit status from /var/tmp/rpm-tmp.55406 (%build)


RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.55406 (%build) 

[root@red-9 downloads]# gcj -v
Reading specs from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/specs
Reading specs from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/libgcj.spec
rename spec lib to liborig
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--disable-checking --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-java-awt=gtk
--host=x86_64-redhat-linux
Thread model: posix
gcc version 3.4.6 20060404 (Red Hat 3.4.6-9)
...

About native compilation, I'm not sure that's the goal here. I've sort
of hijacked this thread so I don't know what the originator had in mind.
I do know that in some environments it may be necessary for reasons of
policy to install from packages only. Perhaps an rpm could be produced
which depends on one of the Sun jdk comptability packages available from
jpackage.org. I would say openjdk, but there are presently only three
distros maintaining packages for it and none of them are based on
Redhat.

Regards,
Matt

-----Original Message-----
From: php...@li...
[mailto:php...@li...] On Behalf
Of php...@li...
Sent: 06 June 2008 18:33
To: php...@li...
Subject: Re: [Php-java-bridge-users] Any support for fedora core 9
inthenearfuture?

Hi,

>     rpmbuild -tb php-java-bridge*.tar.gz

which error message do you get when compiling the RPM?


> over the site but could only see Debian packages. The .spec file 
> requires libgcj.

Sure. Without it native compilation isn't possible.


Regards,
Jost Boekemeier






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Hi,

>     rpmbuild -tb php-java-bridge*.tar.gz

which error message do you get when compiling the RPM?


> over the site but could only see Debian packages. The .spec
> file requires libgcj.

Sure. Without it native compilation isn't possible.


Regards,
Jost Boekemeier






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Hi Jost,

I was just following the instructions in INSTALL.LINUX to see if this
was an option for the user who wishes to install rpms:

----%<----
Installation on RedHat, Fedora, CentOS ...
------------------------------------------

* Check if the Java libraries you're interested in are available as
  native binaries. If not, you need to install Java and the J2EE
  component, see the INSTALL.J2EE or INSTALL.J2SE document and the
  Security Enhanced Linux secion in the README.

* Download and install the PHP/Java Bridge base and the libraries. For
  example:

    rpm -i php-java-bridge-x.y.z-1-i386.rpm
    rpm -i lucene4php-x.y.z-1.i386.rpm
    rpm -i itext4php-x.y.z-1.i386.rpm

* Each native library contains at least one PHP example in

    /usr/share/doc/<libname>/example.


* To rebuild the RPM files, download the php-java-bridge*.tar.gz
  archive and type (as root):

    rpmbuild -tb php-java-bridge*.tar.gz
----%<----

Without doing this, I'm not sure where one obtains a file like
php-java-bridge-5.2.2-1.i386.rpm. I looked in the downloads area and all
over the site but could only see Debian packages. The .spec file
requires libgcj.
Regards,
Matt

-----Original Message-----
From: php...@li...
[mailto:php...@li...] On Behalf
Of php...@li...
Sent: 31 May 2008 17:38
To: php...@li...
Subject: Re: [Php-java-bridge-users] Any support for fedora core 9 in
thenearfuture?

Hi,

the PHP/Java Bridge is written in pure Java. It runs with all Java
versions >= Java 1.4.


> unrecognized gcj flag in the Makefile [...]

trying to compile Java to native code is a waste of time, imho.  

Native code provides the same features as the pure Java implementation,
except that the gcj-compiled code runs 5 times slower than the JIT
compiled code from the OpenJDK.


Regards,
Jost Boekemeier


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