private void configureFeed() {
ObjectClass oc = Db4o.configure().objectClass(Feed.class);
// oc.maximumActivationDepth(1);
// oc.minimumActivationDepth(1);
ObjectField linkText = oc.objectField("fLinkText"); //$NON-NLS-1$
linkText.indexed(true);
linkText.cascadeOnActivate(true);
oc.objectField("fTitle").cascadeOnActivate(true); //$NON-NLS-1$
/* Cascade on update */
oc.objectField("fAuthor").cascadeOnUpdate(true); //$NON-NLS-1$