php-java-bridge-users — PHP/Java Bridge mailing list

[Php-java-bridge-users] How to Keep Object in Application Scope Like JSP?

[Victor L. <vic...@ya...>]

Hi,
In JSP, it has application scope, session scope and
page scope. You can save a java object in the
application scope in JSP, and it will be there as long
as the web application is running. How do I do the
same thing in PHP, I know PHP can do session and page
scope, but how about application scope?

Many thanks.

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[Php-java-bridge-users] How to Convert JSP Import Statement Into PHP?

[Victor L. <vic...@ya...>]

Hi,
  I want to convert my jsp to php files.  My jsp
script has a bunch of import statements like
import="java.io.*".  How do I import these in php? 
The closest ones is java_require, but it is only for
jar files.

thanks.




	
		
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RE: [Php-java-bridge-users] PHP Notice: waiting for server another x seconds

[Michael E. <els...@gm...>]

Jost,

> please make sure that the php.ini contains
> extension=java.so

It does contain that line. 

It seems my PHP uses the php.ini file when called via command line, as well.

Michel

> -----Original Message-----
> From: Jost Boekemeier [mailto:jos...@ya...]
> Sent: Saturday, November 12, 2005 11:48 AM
> To: Michael Elsdoerfer; php...@li...
> Subject: Ant: [Php-java-bridge-users] PHP Notice: waiting for server
> another x seconds
> 
> Hi Michael,
> 
> > server (Apache2/PHP5), I get these messages a lot.
> > PHP Notice:  php_mod_java(57): waiting for server
> 
> please make sure that the php.ini contains
> 
> extension=java.so
> 
> 
> so that the extension is loaded only when apache
> starts. If the above line is missing, the extension is
> loaded for each request.
> 
> 
> Regards,
> Jost Boekemeier
> 
> 
> 
> 
> 
> 
> 
> ___________________________________________________________
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RE: [Php-java-bridge-users] running as daemon on debian

[Michael E. <els...@gm...>]

Kai,

Thank you very much! Works pretty much like a charm!

Gr=FC=DFe nach Hannover :)

Michael

> -----Original Message-----
> From: Kai Londenberg [mailto:K.L...@li...]
> Sent: Friday, November 11, 2005 6:18 PM
> To: Michael Elsdoerfer
> Subject: Re: [Php-java-bridge-users] running as daemon on debian
>=20
> On Fri, 11 Nov 2005 16:36:02 +0100, you wrote:
>=20
> >The service script shipped with the archive does not work on my =
debian
> >machine. I don't have as much knowledge of linux as I'd like, so =
could
> >anybody give me some advice?
> >
> >The "deamon" command used by the script is not available on my =
machine,
> and
> >neither is /etc/rc.d/init.d/functions.
> >
> >Has anybody on the list already written a startup script for debian?
>=20
> Yes, here it is.
>=20
> You might need to modify JAVA_HOME and PHP_EXTENSION_DIR to get it
> running ..
>=20
>=20
> #!/bin/bash
> #
> # php-java-bridge	Start the php-java-bridge java appserver.
> #
> # The variables below are to be changed if neccessary
> NAME=3Dphp-java-bridge
> #JAVA_HOME=3D/opt/jdk142
> JAVA_HOME=3D/opt/IBMJava2-142
> PHP_EXTENSION_DIR=3D/usr/lib/php5/20041030
> JAVA_DBGARGS=3D"-Xdebug
> -Xrunjdwp:transport=3Ddt_socket,server=3Dy,suspend=3Dn,address=3D5000"
> JAVA_XARGS=3D"-Xmx1500m -Xms128m"
> CLASSPATH=3D$PHP_EXTENSION_DIR/JavaBridge.jar
> LIBRARY_PATH=3D$PHP_EXTENSION_DIR
> SOCKETNAME=3DINET_LOCAL:34321
> #SOCKETNAME=3D/var/run/.php-java-bridge_socket
> LOG_LEVEL=3D4
> LOG_FILE=3D/var/log/php-java-bridge.log
> DAEMON=3D"$JAVA_HOME/bin/java"
> ARGS=3D"$JAVA_XARGS -Djava.class.path=3D$CLASSPATH
> -Djava.library.path=3D$LIBRARY_PATH -Djava.awt.headless=3Dtrue
> php.java.bridge.JavaBridge $SOCKETNAME $LOG_LEVEL $LOG_FILE"
> PIDFILE=3D/var/run/$NAME.pid
> COMMAND=3D"$DAEMON $ARGS"
>=20
> # note: SSD is required only at startup of the daemon.
> SSD=3D`which start-stop-daemon`
>=20
> ENV=3D"env -i LANG=3DC PATH=3D/bin:/usr/bin:/usr/local/bin"
>=20
> trap "" 1
>=20
> echo "$NAME service controller"
> echo "$COMMAND"
>=20
> should_start() {
>     if [ ! -x $DAEMON ]; then
> 	echo "java is not executable, not starting"
> 	exit 0
>     fi
> }
>=20
> case "$1" in
>   start)
>     should_start
>     echo -n "Starting Java Application Server for PHP: $NAME"
>     $ENV $SSD --start -b --pidfile $PIDFILE -m --exec $DAEMON -- $ARGS
>     ;;
>=20
>   debug)
>     should_start
>     echo -n "Starting Remote-Debuggable Java Application Server for
> PHP: $NAME"
>     $ENV $SSD --start -b --pidfile $PIDFILE -m --exec $DAEMON --
> $JAVA_DBGARGS $ARGS
>     ;;
>=20
>   stop)
>     echo -n "Stopping Java Application Server for PHP: $NAME"
>     start-stop-daemon --stop --pidfile $PIDFILE --oknodo -R 10
>     rm $PIDFILE
>     ;;
>=20
>   reload | force-reload | restart)
>=20
>     ;;
>=20
>   *)
>     echo "Usage: /etc/init.d/$NAME {start|debug|stop|restart}"
>     exit 1
>     ;;
> esac
>=20
> if [ $? -eq 0 ]; then
> 	echo .
> 	exit 0
> else
> 	echo " failed"
> 	exit 1
> fi
>=20
>=20
> -------------------------------
> librics GmbH & Co. KG
> G=F6ttinger Chaussee 115
> D-30459 Hannover
> Tel. +49 511 - 473 88 77
> Fax +49 511 - 473 88 78
> mailto: K.L...@li...

Ant: [Php-java-bridge-users] PHP Notice: waiting for server another x seconds

[Jost B. <jos...@ya...>]

Hi Michael,

> server (Apache2/PHP5), I get these messages a lot.
> PHP Notice:  php_mod_java(57): waiting for server

please make sure that the php.ini contains

extension=java.so


so that the extension is loaded only when apache
starts. If the above line is missing, the extension is
loaded for each request.


Regards,
Jost Boekemeier



	

	
		
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Ant: [Php-java-bridge-users] How to create a java two-dimensional array in php-code

[Jost B. <jos...@ya...>]

Hi Adam,

the java.lang.reflect.Array has the following factory
procedure:

 newInstance(Class componentType, int[] dimensions)

so that you can call:

$ar=$Array->newInstance(new java("java.lang.Object",
array(2,2,2,2,2,2));

to create an array with 6 dimensions.

$str=new java("java.lang.String", "hello");
$ar[0][1][0][1][0][1]=$str;

should work, at least in PHP5. (It might work in PHP4,
too, but then you have to use the array setter/getters
explicitly).


Regards,
Jost Boekemeier




	

	
		
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Representation of java objects (Was: RE: [Php-java-bridge-users] Bridge turns BigInteger into a double?)

[Jost B. <jos...@ya...>]

Hi Jonathan,

I think this is a more general problem. My suggested
workaround doesn't even work for custom number types
which might not have an appropriate constructor. 
Representing a complex number as a php value isn't
possible anyway.

For version 3.0 we have the opportunity to change this
behaviour and remove auto-conversion of return values
completely. This would allow users to work with java
numbers or java strings in a natural way, for example:

$str = new java("java.lang.String", ${123}";
$str = $str->substring(2);
$str = $str->substring($str->length()-1);

If users want to convert a java object into a php
object they can always use the cast operator, for
example:

echo strchr((string)$str, "2");


Regards,
Jost Boekemeier



	

	
		
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[Php-java-bridge-users] running as daemon on debian

[Michael E. <els...@gm...>]

The service script shipped with the archive does not work on my debian
machine. I don't have as much knowledge of linux as I'd like, so could
anybody give me some advice?

The "deamon" command used by the script is not available on my machine, and
neither is /etc/rc.d/init.d/functions.

Has anybody on the list already written a startup script for debian?

Thanks,

Michael

[Php-java-bridge-users] PHP Notice: waiting for server another x seconds

[Michael E. <els...@gm...>]

When running the bridge with in internal java process started by the web
server (Apache2/PHP5), I get these messages a lot.

PHP Notice:  php_mod_java(57): waiting for server another 14 seconds in
Unknown on line 0

For example, every time I run the php executable on the command line.

Is there something wrong? Everything seems to be working fine. What can be
done to suppress these messages?

Any help is appreciated.

Thanks,

Michael

RE: [Php-java-bridge-users] Bridge turns BigInteger into a double?

[Abbett, J. <Jon...@ch...>]

Your suggested solution worked after I put quotes around my numeric
parameter -- the BigInteger constructor doesn't take Longs, but it does
take Strings!

$docRef->setVersion(new java("java.lang.BigInteger","1"));

Thanks for your help,
--Jon


-----Original Message-----
From: Jost Boekemeier [mailto:jos...@ya...]=20
Sent: Thursday, November 10, 2005 2:25 PM
To: Abbett, Jonathan; php...@li...
Subject: Ant: [Php-java-bridge-users] Bridge turns BigInteger into a
double?

Hi Jonathan,

please always create a java value explicitly instead
of relying on auto-conversions for php values[1]:

Instead of

  $obj->method($phpVal);

use

  $obj->method(new java("<param-class>", $phpVal));


So your example would read:

  $docRef->setVersion(new java("java.lang.BigInteger",
1));


> It looks like the PHP-Java Bridge is transforming my
> BigInteger=20

When possible a java value is represented as a php
value. "Possible" means: All sub-types of
java.lang.Number are represented as a php exact or
inexact number and all java strings are represented as
a UTF-8 encoded[2] php string.  Everything else is
represented as a opaque object handle.

To create an object handle for such a php value one
has to invoke the constructor as shown above.


Regards,
Jost Boekemeier

[1] all instances of java.lang.Number and all
instances of java.lang.String

[2] encoding can be changed with e.g.: java_set_file_encoding("ASCII").


=09

=09
	=09
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Ant: [Php-java-bridge-users] Bridge turns BigInteger into a double?

[Jost B. <jos...@ya...>]

Hi Jonathan,

please always create a java value explicitly instead
of relying on auto-conversions for php values[1]:

Instead of

  $obj->method($phpVal);

use

  $obj->method(new java("<param-class>", $phpVal));


So your example would read:

  $docRef->setVersion(new java("java.lang.BigInteger",
1));


> It looks like the PHP-Java Bridge is transforming my
> BigInteger 

When possible a java value is represented as a php
value. "Possible" means: All sub-types of
java.lang.Number are represented as a php exact or
inexact number and all java strings are represented as
a UTF-8 encoded[2] php string.  Everything else is
represented as a opaque object handle.

To create an object handle for such a php value one
has to invoke the constructor as shown above.


Regards,
Jost Boekemeier

[1] all instances of java.lang.Number and all
instances of java.lang.String

[2] encoding can be changed with e.g.: java_set_file_encoding("ASCII").


	

	
		
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[Php-java-bridge-users] Bridge turns BigInteger into a double?

[Abbett, J. <Jon...@ch...>]

I have a method that takes a BigInteger as input, but I can't seem to
get a BigInteger in there.  A code fragment:

=20

$docRef =3D $factory->createDocumentReferenceType();

$bigint =3D new java_class("java.math.BigInteger");

$docRef->setVersion($bigint->valueOf(1));

=20

I get an exception on that last line, which is reported in the PHP error
log:

=20

PHP Fatal error:  Uncaught [class java.lang.Exception:
java.lang.Exception: Invoke failed:
[org.chip.ping.xml.annotation.impl.DocumentReferenceTypeImpl@15b44d6]->s
etVersion(class java.lang.Double). Cause:
java.lang.IllegalArgumentException: argument type mismatch]

...

=20

It looks like the PHP-Java Bridge is transforming my BigInteger into a
java.lang.Double.  How do I prevent this from happening?  What
alternatives do I have?

=20

Thanks,

Jon Abbett

=20

=20

=20

=20

[Php-java-bridge-users] How to create a java two-dimensional array in php-code

[Adam C. <ada...@gm...>]

Does anyone know how to create a java two-dimensional array
and set its value of each element in php-code?
Thanks for your attention and help.

For example: one-dimensional array
<?php
 $Array =3D new JavaClass("java.lang.reflect.Array");
$String =3D new JavaClass("java.lang.String");
$entries =3D $Array->newInstance($String, 3);
$entries[0] =3D"a";
$entries[1] =3D"b";
$entries[2] =3D"c";
?>

Ant: [Php-java-bridge-users] Request: java.awt.headless=false

[Jost B. <jos...@ya...>]

Hi,

security concerns aside[1], please see PR1235199
(http://sourceforge.net/tracker/index.php?func=detail&aid=1235199&group_id=117793&atid=679233),
it contains a description how to pass additional
options to the JVM.


Regards,
Jost Boekemeier

[1] Setting java.awt.headless=false would allow php
scripts to access the graphics display, at least on
windows (on unix the attacker needs permission to
access the display, e.g. via xhost +). This would
enable php scripts to log key events: passwords etc.


	

	
		
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Ant: [Php-java-bridge-users] How to Convert JSP code to PHP code Easily?

[Jost B. <jos...@ya...>]

Hi Victor,

the easiest way is to install the j2ee backend
(http://prdownloads.sourceforge.net/php-java-bridge/php-java-bridge.j2ee_2.0.8.zip?download).
It allows you to convert your jsp files to php step by
step.

Assuming that your web application is called myApp and
you want to run php files:

* copy webapps/JavaBridge/WEB-INF/lib/JavaBridge.jar
and the controller servlet classes from
JavaBridge/WEB-INF/classes/ to webapps/myApp/WEB-INF/

* add the servlet mapping to your WEB-INF/web.xml,
please see JavaBridge/WEB-INF/web.xml for a template.
Please set the init-param "override_hosts" to Off and
set the correct hosts and servlet in your php.ini:

* use the following lines in your php.ini
 [java]
 java.hosts="127.0.0.1:8080"
 java.servlet="/myApp/PhpJavaServlet"

If you browse to http://localhost:8080/myApp, you
should be able to develop and invoke your php files.


For a production system please start Apache and browse
to http://yourHost.com/myApp. The php modules will
call to the java backend as neccesary.

In case you have a distribution where the tomcat
webapps and the apache htdocs directories are not
shared, please either use a symlink or use mod jk to
"JkMount" the tomcat webapps directory into apache
(please see the readme for details).


Regards,
Jost Boekemeier



	

	
		
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[Php-java-bridge-users] Request: java.awt.headless=false

[Simon A. <ch...@mi...>]

I have a situation where I'm running Java under the PJB and it needs 
access to the X server. In this case, the flag normally passed in to 
Java "-Djava.awt.headless=true" causes my application not to work 
right.  I had to change the file bind.c and recompile to change the 
parameter to "-Djava.awt.headless=false" so that my software could work.

It would be nice if this were a configurable option.

[Php-java-bridge-users] How to Convert JSP code to PHP code Easily?

[Victor L. <vic...@ya...>]

Hi,
  I have some JSP code, and I want to convert them to
PHP by using php-java-bridge.  Is there a easy way to
do it?
Many thanks.

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Ant: [Php-java-bridge-users] Where Can I Find More Tutorial or Code Examples?

[Jost B. <jos...@ya...>]

Hi Victor,

[I assume that you want to use PHP scripts from java
projects like tapestry, java server faces, etc.]
> where can I find more tutorial about how to use this
> bridge?

A tutorial doesn't exist at the moment.  However, it
is planned for version 3.0 and 2.0.9.


>  I also need more code examples that use this
> bridge. 

At the moment only the php API functions are
documented (->http://php-java-bridge.sf.net).

If you want to use the bridge from java code, I
suggest to use the script API, which will be available
with jdk1.6, please see
http://download.java.net/jdk6/docs/api/javax/script/package-summary.html
and
http://sourceforge.net/mailarchive/forum.php?thread_id=8895955&forum_id=42415


> The documentation is not that detail.  I don't know
> what many of the functions do even after I read the
> documentation come with the code itself.

Which functions do you mean specifically?


Regards,
Jost Boekemeier


	

	
		
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Ant: [Php-java-bridge-users] Installation Issue

[Jost B. <jos...@ya...>]

Hi Corey,

please excuse the delay.

> I running PHP Version 4.3.4
[...]
> Warning: dl(): Unable to load dynamic library 
> '/usr/lib/php/extensions/java.so' -
> /usr/lib/php/extensions/java.so: 
> undefined symbol: zend_ce_arrayaccess in
> /srv/www/htdocs/test.php on line 12

This sounds similar to PR1181710 (please see
http://sourceforge.net/tracker/index.php?func=detail&aid=1181710&group_id=117793&atid=679233).

Are you shure that you have created the java.so
against the php 4.3.4 ABI -- or have you copied the
java.so from somwhere else?

Can you please create a ticket for this (please use
http://sourceforge.net/tracker/?func=add&group_id=117793&atid=679233)
and attach the java.so to this ticket?

I will check this asap.


Regards,
Jost Boekemeier



	

	
		
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[Php-java-bridge-users] Where Can I Find More Tutorial or Code Examples?

[Victor L. <vic...@ya...>]

Hi,
  I am new in this php-java-bridge.  Do you know where
can I find more tutorial about how to use this bridge?
 I also need more code examples that use this bridge. 
The documentation is not that detail.  I don't know
what many of the functions do even after I read the
documentation come with the code itself.

Many thanks.


		
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Ant: [Php-java-bridge-users] PHP Invocation from Java - CGI or FASTCGI ?

[Jost B. <jos...@ya...>]

[resent]

Hi,

a URLConnection is used to connect to the frontend
(Apache).  The php instance in turn connects to our
java backend (the current vm) using the following
code:

(java_context()->getAttribute("X_JAVABRIDGE_CONTINUATION"))->call(java_closure());


Regards,
Jost Boekemeier



	

	
		
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[Php-java-bridge-users] PHP Invocation from Java - CGI or FASTCGI ?

[Kai L. <K.L...@li...>]

Just out of curiosity - do you use php as a usual cgi binary, or do
you use the fastcgi interface when invoking PHP Code from Java ..

	best regards,

		Kai Londenberg

-------------------------------
librics GmbH & Co. KG
G=F6ttinger Chaussee 115
D-30459 Hannover
Tel. +49 511 - 473 88 77
=46ax +49 511 - 473 88 78
mailto: K.L...@li...

[Php-java-bridge-users] Installation Issue

[Corey B. <cor...@ho...>]

Greetings.

I am having trouble with the installation on loading the extension. When the 
'java.so' extension load is attempted I get the following error:

Warning: dl(): Unable to load dynamic library 
'/usr/lib/php/extensions/java.so' - /usr/lib/php/extensions/java.so: 
undefined symbol: zend_ce_arrayaccess in /srv/www/htdocs/test.php on line 12

I running PHP Version 4.3.4

Any help would be appreciated. Thanks.

Ant: [Php-java-bridge-users] Apache access to .php files

[Jost B. <jos...@ya...>]

Hi Kevin,

> I'm attempting to set up the php-java-bridge in the
> "load balancing
> and failover" approach.  What access does Apache
> need to have to the
> .php files in my project?

It should work if you symlink the tomcat webapps
directory  into the apache document root or if you "jk
mount" it.

It's just that apache must be able to allocate and to
invoke a php instance from its pool.  


> *install warfile
> *access http://myhost/JavaBridge/numberguess.php

Yes.  If /var/www/html/JavaBridge/numberguess.php
exists.

 
> Or do I need to grant apache access to that
> directory, and map
> JavaBridge/**.php to the webcontent/JavaBridge
> directory?

jk mounting it is is also possible, but slower. When
you mount a file or directory using mod_jk, the
adapter "copies" the content of the file or directory
from the tomcat dir to the apache dir at run-time. 

So I would just symlink the
$CATALINA_HOME/webapps/JavaBridge to
/var/www/html/htdocs/.  

BTW: If you have RedHat FC4, the tomcat webapps and
the apache htdocs are shared by default, mod_jk is not
needed anymore.


Regards,
Jost Boekemeier



	

	
		
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Ant: [Php-java-bridge-users] passing String[] argument to a constructor

[Jost B. <jos...@ya...>]

Hi Guillaume,

> $Array = new JavaClass("java.lang.reflect.Array");
> $String = new JavaClass("java.lang.String");
> $entries = $Array->newInstance($String, 2);
[...]
> 	$req->ProcessFunction($Array);
[...]
>...(([Ljava.lang.String;)c:java.lang.reflect.Array)

if I understand this correctly, you want to pass the
created String[] instance to ProcessFunction, not the
$Array class.

Does 

  $req->ProcessFunction($entries)

solve the problem?


BTW: The above error message indicates that the
ProcessFunction2 accepts a [Ljava.Lang.String], i.e. a
String[] but it is called with an argument which is a
class java.lang.reflect.Array.  I agree that this is
difficult to read, but if I make the message more
verbose, php may cut off the rest of the message.

Maybe the full message should go to the PHP/Java
Bridge log.


Regards,
Jost Boekemeier


	

	
		
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