Description Ludger Solbach 2008-03-31 14:54:53 EDT

I'm getting all kinds of strange effects with the aspect below...

On a stripped down version of my project with just the aspect in Eclipse 3.3 with AJDT 1.5.1 I'm getting this exception.

java.lang.NullPointerException
at org.aspectj.org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding.constantPoolName(TypeVariableBinding.java:226)
at org.aspectj.org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding.signature(ReferenceBinding.java:1015)
at org.aspectj.org.eclipse.jdt.internal.compiler.lookup.MethodBinding.signature(MethodBinding.java:724)
at org.aspectj.org.eclipse.jdt.internal.compiler.ClassFile.generateMethodInf ... AutoBuildJob.run(AutoBuildJob.java:235)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)


Compiling with the ant iajc task works for the abstract aspect, but then I get a compiler error instanciating it for 2 classes (MenuItem, Menu).

---8<---

package org.soulspace.pattern.composite;

import java.util.List;
import java.util.ArrayList;

public abstract aspect AbstractCompositeAspect<Item, Container> {

	public interface CompositeItem<C extends CompositeContainer> {
		C getContainer();
		int getRootDistance();
	}
	
	public interface CompositeContainer<I extends CompositeItem> extends CompositeItem {
		List<I> getItemList();
		CompositeContainer<I> addItem(I item);
		CompositeContainer<I> removeItem(I item);
	}

	private C CompositeItem<C>.container;
	public C CompositeItem<C>.getContainer() {
		return container;
	}
    public void CompositeItem<C>.setContainer(C c) {
    	container = c;
    }
	
	public int CompositeItem<C>.getRootDistance() {
		if(container == null) {
			return 0;
		} else {
			return container.getRootDistance() + 1;
		}
	}

	private List<I> CompositeContainer<I>.itemList = new ArrayList<I>();

	public List<I> CompositeContainer<I>.getItemList() {
		return itemList;
	}

	public CompositeContainer<I> CompositeContainer<I>.addItem(I i) {
		itemList.add(i);
//		i.container = this;
//		i.setContainer(this);
		return this;
	}

	public CompositeContainer<I> CompositeContainer<I>.removeItem(I i) {
		if(itemList.remove(i)) {
//			i.container = null;
		}
		return this;
	}
	
	declare parents : Item implements CompositeItem;
	declare parents : Container implements CompositeContainer<Item>;


	public pointcut addingItem(Item i, Container c) :
		execution(* CompositeContainer.addItem(CompositeItem))
		&& this(c)
		&& args(i)
		;
	
}