[Php-java-bridge-users] LinkageException and remedy

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

Hi there!

Running (the otherwise excellent) php-java-bridge-4.1.8 I encountered a bug=
.

I had the following java-class structure

Class A
Class B extends A

>From php I referenced a remote EJB and called a method with the
following signature:

public A getA();

Where the method in fact returns an instance of  class B.

In php I then tried to figure out whether it was an instance of Class
A or B by using
java_instance_of:

$obj =3D $bean->getA();
$clazz =3D new JavaClass("org.test.B");
if ($clazz instanceof Java && java_instanceof($address, $clazz)){
  //...
} else {
 //...
}

However, this raised a LinkageException on the JVM, claiming that
Class B  already was loaded by the classloader.
If "$clazz =3D new JavaClass("org.test.B");" was performed before
"$bean->getA();" everything worked out fine, so I figured that
something was buggy in the dynamic classloading scheme.

I've attached a patch to the DynamicJavaBridgeClassLoader which
addresses this, by checking findLoadedClass(name) before
doLoadClass(name) but after verifying that it isn't in the cache.

/Sincerely
P-a B=E4ckstr=F6m
Sweden