[Php-java-bridge-users] FYI: PHP/Java Bridge 4.1.0 (test) available (was: Re: Isolation of WebApps under Tomcat)

[<php...@li...>]

Hi,

PHP/Java Bridge version 4.1.0 fixes this problem.

Please use the following download link:

http://sourceforge.net/project/downloading.php?group_id=117793&use_mirror=osdn&filename=php-java-bridge_4.1.0_j2ee.zip&15111070

Since version 4.1.0 the DynamicJavaBridgeClassLoader
is optional. When running in a shared web environment,
JavaBridge.jar and php-servlet.jar are loaded from the
global classpath, the PhpJavaServlet sets the
currentThreadContextClassLoader (wrapped by a
URLClassLoader, used to load libraries from
~/lib/)into the ContextFactory and the ContextRunners
retrieve and use the appropriate ClassLoader.

The DynamicJavaBridgeClassLoader is enabled only when
the procedure java_require() is called. The bridge
allocates a new instance of the
DynamicJavaBridgeClassLoader (with the current loader
as a delegate) and sets it into the
PhpJavaBridgeClassLoader. After the request is done,
the DynamicJavaBridgeClassLoader is thrown away. This
is necessary because the VM keeps a native cache which
is associated the instance of the
DynamicJavaBridgeClassLoader. -- Some Java VM's (IBM)
even crash, if we do dirty tricks to recycle the
instance for new requests (see documentation note in
DynamicClassLoader#copyInto).

Furthermore the ContextFactory's have been cleaned up.
Both, the pure PHP- as well as the C implementation
now pass the current context ID via a protocol header
field, so that the ContextFactory can temporarily set
the correct JavaBridge instance for the current
connection (see option java.persistent_connections).
This means that most of the old "recycle" logic is now
obsolete and has been removed (it may be possible to
keep the old cruft, but it is ugly and very hard to
understand).

Because of the above change, old php_java.dll or
java.so files < 4.1.0 will likely crash. For version
4.1.1 I will add a compatibility option which simply
disables java.persistent_connections when the back end
detects an old protocol header. Until then please use
the pure PHP implementation ("Java.inc") instead.


Regards,
Jost Boekemeier



		
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