Important: About using this extension on WSO2 Developer Studio generated files.

If you are using the WSO2 BPEL editor from WSO2 Developer Studio, you must be careful with the namespace prefix. In the provided example, the extension declaration is this:

<extensions> <extension namespace="http://hasithaa.github.io/BPEL-ClassActivity/" mustUnderstand="yes"/> </extensions>

But, when you're using the designer and you wish to use this custom extension,you must switch to the source code view of your bpel file and write this:

<bpel:extensions> <bpel:extension namespace="http://hasithaa.github.io/BPEL-ClassActivity/" mustUnderstand="yes"></bpel:extension> </bpel:extensions>

For the execution step part the provided example is this:

<extensionActivity> <java:invokeClass name="InvokeClass" class="io.github.hasithaa.java4bpel.sample.LogVariable"> <java:param>myVar</java:param> <java:param>myResponseVar</java:param> </java:invokeClass> </extensionActivity>

and in the source code view of your designer you have to write: <bpel:extensionActivity> <java:invokeClass name="InvokeClass" class="io.github.hasithaa.java4bpel.sample.LogVariable"> <java:param>input</java:param> <java:param>output</java:param> </java:invokeClass> </bpel:extensionActivity>