Description Markus Kuppe 2010-10-05 13:30:20 EDT

A r-OSGi smart proxy [0] allows to intercept methods called on the generated service proxy on the consumer side. E.g.

public abstract class SmartProxyService implements IFooService {

	/* (non-Javadoc)
	 * @see o.e.ecf.IFooService#foo()
	 */
	public boolean foo() {
		return false;
	}
}

foo() overwrites the method declaration in IFooService. 
Unfortunately, r-OSGi does not support calling the original IFooService#foo() method from within the smart proxy, because it's not possible to get hold of the IFooService instance, e.g.:

public abstract class SmartProxyService implements IFooService {

	/* (non-Javadoc)
	 * @see o.e.ecf.IFooService#foo()
	 */
	public boolean foo() {
		return anIFooService.foo();
	}
}

Instead I have added functionality to declare a stub method inside the SmartProxyService that is dispatched to the original IFooService#foo() method at runtime. For this work, the stub method has to be abstract, declare the same signature, but prepend the original method name with "_rosgi" and the first character capitalized:

public abstract class SmartProxyService implements IFooService {

	public abstract boolean _rosgiFoo();

	/* (non-Javadoc)
	 * @see o.e.ecf.IFooService#foo()
	 */
	public boolean foo() {
		return _rosgiFoo();
	}
}

[0] http://r-osgi.sourceforge.net/advanced.html