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

Hi, 

I use php-java-bridge 4.08a, works perfectly.
I have to clone the system, but on i386 machine.

I made the deb package, but after apache restart I see this running:
java -Djava.library.path=/usr/lib/php5/20060613+lfs
-Djava.class.path=/usr/lib/php5/20060613+lfs/JavaBridge.jar
-Djava.awt.headless=true -Dphp.java.bridge.base=/usr/lib/php5/20060613+lfs
php.java.bridge.Standalone LOCAL:@java-bridge-7dba 1

also, listens on a local unix socket.
I want php-java-bridge to listen on tcp port 9267, as on the original hw
(amd64). 

I read the documentation, but nowadays the php-java-bridge used from tomcat,
and I don't find any suggestion to say to the bridge to listen on a tcp
port.
Have you any suggestion?

Thanks:

--
Üdv,
 Ricsi

We've solved this problem: we had 'magic_quotes_runtime' set to 'On' in our php.ini file. I suspect this caused the bridge parser to choke. In any event, this parameter is deprecated (and absent in PHP 6). We turned it off and everything worked fine.

-Michael




Require java.inc directly from your back end in order to avoid
version-specific problems.

This Java message means that php crashed immediately during the first
connect. And your PHP message means that Java crashed when processing a
protocol request. There was a protocol related change from 5.4.4 to
5.4.4.2, see our NEWS file for details.

Please use require_once("http://.../java/Java.inc") to avoid these problems.
Or make sure to use the Java.inc distributed with your java back end.

Regards,
Jost Boekemeier

2. Jun 2009 5:21 vorm. schrieb am <
php-java-bridge-users@li...>:

I'm getting an error when running a simple bridge demo on CentOS with
Apache. The problem is that the demo PHP code runs fine when piped into PHP
(version 5.2.9) on the command line, but gives the following error when
accessed via the web server:

protocol error: <O v=\"1\" m=\"java.lang.System\" p=\"O\" n=\"F\"/>,
> required at col 8. Check the back end log for OutOfMemoryErrors.

I also see this warning in VMBridge.log:

"VMBridge WARNING: contextfactory: Orphaned context: ContextFactory:
Context# 1@, credentials: null, SimpleContextFactory: class php.java.bridge.
http.SimpleContextFactory, current loader:
sun.misc.Launcher$AppClassLoader@77cde100 removed."

No OOM error is logged, and a check of free memory shows over 1GB available.
The memory required by the demo app is trivial. We aren't running a J2EE
container, instead running the Java app standalone per the FAQ. The Java
version is 1.6. Here is the relevant line of Java code in our Main class:

static final php.java.bridge.JavaBridgeRunner runner =
php.java.bridge.JavaBridgeRunner.getInstance("8087");

I can connect to the runner successfully on port 8087, and have configured
the bridge to connect on that port.

The demo PHP code is:

<?php require_once("java/Java.inc"); echo
java("java.lang.System")->getProperties(); ?>

As noted above, this code runs fine from the command line. The error only
occurs when it's run through the web server.

Is there any other kind of problem besides an OOM error that could result in
a protocol error such as this?

Thanks,

-Michael

Require java.inc directly from your back end in order to avoid
version-specific problems.

This Java message means that php crashed immediately during the first
connect. And your PHP message means that Java crashed when processing a
protocol request.  There was a protocol related change from 5.4.4 to
5.4.4.2, see our NEWS file for details.

Please use require_once("http://.../java/Java.inc") to avoid these problems.
Or make sure to use the Java.inc distributed with your java back end.

Regards,
Jost Boekemeier

2. Jun 2009 5:21 vorm. schrieb am <
php...@li...>:

I'm getting an error when running a simple bridge demo on CentOS with
Apache. The problem is that the demo PHP code runs fine when piped into PHP
(version 5.2.9) on the command line, but gives the following error when
accessed via the web server:

       protocol error: <O v=\"1\" m=\"java.lang.System\" p=\"O\" n=\"F\"/>,
> required at col 8. Check the back end log for OutOfMemoryErrors.

I also see this warning in VMBridge.log:

        "VMBridge WARNING: contextfactory: Orphaned context: ContextFactory:
Context# 1@, credentials: null, SimpleContextFactory: class php.java.bridge.
http.SimpleContextFactory, current loader:
sun.misc.Launcher$AppClassLoader@77cde100 removed."

No OOM error is logged, and a check of free memory shows over 1GB available.
The memory required by the demo app is trivial. We aren't running a J2EE
container, instead running the Java app standalone per the FAQ. The Java
version is 1.6. Here is the relevant line of Java code in our Main class:

       static final php.java.bridge.JavaBridgeRunner runner =
php.java.bridge.JavaBridgeRunner.getInstance("8087");

I can connect to the runner successfully on port 8087, and have configured
the bridge to connect on that port.

The demo PHP code is:

       <?php require_once("java/Java.inc"); echo
java("java.lang.System")->getProperties(); ?>

As noted above, this code runs fine from the command line. The error only
occurs when it's run through the web server.

Is there any other kind of problem besides an OOM error that could result in
a protocol error such as this?

Thanks,

-Michael

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I'm getting an error when running a simple bridge demo on CentOS with Apache. The problem is that the demo PHP code runs fine when piped into PHP (version 5.2.9) on the command line, but gives the following error when accessed via the web server:

	protocol error: <O v=\"1\" m=\"java.lang.System\" p=\"O\" n=\"F\"/>, > required at col 8. Check the back end log for OutOfMemoryErrors. 

I also see this warning in VMBridge.log:

	 "VMBridge WARNING: contextfactory: Orphaned context: ContextFactory: Context# 1@, credentials: null, SimpleContextFactory: class php.java.bridge. http.SimpleContextFactory, current loader: sun.misc.Launcher$AppClassLoader@77cde100 removed."

No OOM error is logged, and a check of free memory shows over 1GB available. The memory required by the demo app is trivial. We aren't running a J2EE container, instead running the Java app standalone per the FAQ. The Java version is 1.6. Here is the relevant line of Java code in our Main class:

	static final php.java.bridge.JavaBridgeRunner runner = php.java.bridge.JavaBridgeRunner.getInstance("8087");

I can connect to the runner successfully on port 8087, and have configured the bridge to connect on that port.

The demo PHP code is:

	<?php require_once("java/Java.inc"); echo java("java.lang.System")->getProperties(); ?>

As noted above, this code runs fine from the command line. The error only occurs when it's run through the web server.

Is there any other kind of problem besides an OOM error that could result in a protocol error such as this?

Thanks,

-Michael

Thank you Jost.

I believe the only java_values call that I have is necessary then.  I need
to get the result of the transformation back as a string so I can output it
(and possibly evaluate it for php code)  Unless there's some better way to
get a potentially large chunk of text back from java.

/John

On Mon, Jun 1, 2009 at 2:12 AM, <php...@li...
> wrote:

> Hi,
>
> If I understand your code correctly, your function "saxon" is called with
> two arguments, $xml and $xsl being proxies for two (potentially large)
> Strings.
>
> As long as you don't evaluate these proxies (explicitly using
> java_values($xml) or implicitly using a cast to ((string)$xml)), there
> shouldn't be any performance problems.
>
> The java_values() call forces the bridge to evaluate a proxy and to return
> the result as a potentially large PHP value (string or array or ....). I
> would call java_values() only if necessary. E.g. at the end of the script,
> or right before manipulating it with native e.g. php str_* functions.
>
> The $system->setProperty() assumes ownership of the back end. Instead of
> setting the property over and over again I would set it once with a java
> -D... parameter. Or rely on the JEE environment to do the correct
> initialisation of your library.
>
> Regards,
> Jost Boekemeier
>
> 31. Mai 2009 4:55 nachm. schrieb am <
> php...@li...>:
>
> Hi,
>
> I'm working on porting an application to PHP that relies on some Java
> functionality.  I've decided to use the PHP/Java Bridge.
>
> Here is what I've got in PHP.  Summary: it takes in two strings, xml
> and xsl, and should return the result of applying the xsl transform on
> the xml.
>
> So far, so good!  I originally was having trouble getting the result
> back out into a PHP string variable, but there was just a simple typo
> in the code,  So my post is turning into a slightly different
> question.
>
> Could someone familiar with the PHP/Java bridge look over my code and
> let me know if it looks like I've got the "right idea"  I'm concerned
> about performance, and the fact that the variables $xml and $xsl could
> potentially be very large (megabytes of text)
>
> Thanks in advance for any insight you can give me.  This is new ground
> for me, and I want to make sure I'm not making any major mistakes.
>
> ------
>
> function saxon($xml,$xsl){
>
>    require_once("
> http://localhost:8080/JavaBridgeTemplate5442/java/Java.inc
> ");
>
>        $System = java("java.lang.System");
>    $System->setProperty("javax.xml.transform.TransformerFactory",
> "net.sf.saxon.TransformerFactoryImpl");
>
>    $TransformerFactory = java("javax.xml.transform.TransformerFactory");
>    $tFactory           = $TransformerFactory->newInstance();
>
>    $xmlString = new Java("java.lang.String", $xml);
>    $xslString = new Java("java.lang.String", $xsl);
>    $xmlStringReader = new Java("java.io.StringReader", $xmlString);
>    $xslStringReader = new Java("java.io.StringReader", $xslString);
>
>    $xmlStreamSource = new
> Java("javax.xml.transform.stream.StreamSource", $xmlStringReader);
>    $xslStreamSource = new
> Java("javax.xml.transform.stream.StreamSource", $xslStringReader);
>
>    $transformer     = $tFactory->newTransformer($xslStreamSource);
>
>    $outputStringWriter = new Java("java.io.StringWriter");
>    $outputStreamResult = new
> Java("javax.xml.transform.stream.StreamResult",$outputStringWriter);
>
>    $transformer->transform($xmlStreamSource,$outputStreamResult);
>
>
>    $outputString = new Java("java.lang.String");
>    $outputString = $outputStringWriter->toString();
>
>    return (java_values($outputString));
>
> }
>
> --
> John
>
>
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-- 
John McGowan

Lynch2
792 West Bartlett Road
Bartlett, Illinois 60103

www.lynch2.com
w:847-608-6900 Ext 4110

Hi,

If I understand your code correctly, your function "saxon" is called with
two arguments, $xml and $xsl being proxies for two (potentially large)
Strings.

As long as you don't evaluate these proxies (explicitly using
java_values($xml) or implicitly using a cast to ((string)$xml)), there
shouldn't be any performance problems.

The java_values() call forces the bridge to evaluate a proxy and to return
the result as a potentially large PHP value (string or array or ....). I
would call java_values() only if necessary. E.g. at the end of the script,
or right before manipulating it with native e.g. php str_* functions.

The $system->setProperty() assumes ownership of the back end. Instead of
setting the property over and over again I would set it once with a java
-D... parameter. Or rely on the JEE environment to do the correct
initialisation of your library.

Regards,
Jost Boekemeier

31. Mai 2009 4:55 nachm. schrieb am <
php...@li...>:

Hi,

I'm working on porting an application to PHP that relies on some Java
functionality.  I've decided to use the PHP/Java Bridge.

Here is what I've got in PHP.  Summary: it takes in two strings, xml
and xsl, and should return the result of applying the xsl transform on
the xml.

So far, so good!  I originally was having trouble getting the result
back out into a PHP string variable, but there was just a simple typo
in the code,  So my post is turning into a slightly different
question.

Could someone familiar with the PHP/Java bridge look over my code and
let me know if it looks like I've got the "right idea"  I'm concerned
about performance, and the fact that the variables $xml and $xsl could
potentially be very large (megabytes of text)

Thanks in advance for any insight you can give me.  This is new ground
for me, and I want to make sure I'm not making any major mistakes.

------

function saxon($xml,$xsl){

    require_once("http://localhost:8080/JavaBridgeTemplate5442/java/Java.inc
");

        $System = java("java.lang.System");
    $System->setProperty("javax.xml.transform.TransformerFactory",
"net.sf.saxon.TransformerFactoryImpl");

    $TransformerFactory = java("javax.xml.transform.TransformerFactory");
    $tFactory           = $TransformerFactory->newInstance();

    $xmlString = new Java("java.lang.String", $xml);
    $xslString = new Java("java.lang.String", $xsl);
    $xmlStringReader = new Java("java.io.StringReader", $xmlString);
    $xslStringReader = new Java("java.io.StringReader", $xslString);

    $xmlStreamSource = new
Java("javax.xml.transform.stream.StreamSource", $xmlStringReader);
    $xslStreamSource = new
Java("javax.xml.transform.stream.StreamSource", $xslStringReader);

    $transformer     = $tFactory->newTransformer($xslStreamSource);

    $outputStringWriter = new Java("java.io.StringWriter");
    $outputStreamResult = new
Java("javax.xml.transform.stream.StreamResult",$outputStringWriter);

    $transformer->transform($xmlStreamSource,$outputStreamResult);


    $outputString = new Java("java.lang.String");
    $outputString = $outputStringWriter->toString();

    return (java_values($outputString));

}

--
John

------------------------------------------------------------------------------
Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT
is a gathering of tech-side developers & brand creativity professionals.
Meet
the minds behind Google Creative Lab, Visual Complexity, Processing, &
iPhoneDevCamp as they present alongside digital heavyweights like Barbarian
Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com
_______________________________________________
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