public void addToContext() {
		// TODO Auto-generated method stub
		if(this.tested)
			return;
		tested = true;
		REXClassExpressionImpl context = (REXClassExpressionImpl) getLHSContext();
//		if(!(context instanceof REL2DataRange))
			context.scheduleAdd(this);
		if(getRHSContext() != null)
		{
			context = (REXClassExpressionImpl) getRHSContext();
//			if(!(context instanceof REL2DataRange))
			context.scheduleAdd(this);
		}
	}