Bug 296691 Change new Groups API to Virtual Resource API
If we decide that 'virtual' is the right naming for new resources concept, I will make the following changes. Add IResource#VIRTUAL flag to use in #create methods Add IResource#isVirtual indicating that a resource is virtual Remove IResource#isGroup Remove IFolder#createGroup
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
*         collision should be validateEdited. <code>false</code> if only
	 *         the destination should be validated.
	 */
	protected boolean getValidateConflictSource() {
		return false;
	}
	/**
	 * Returns whether the given resources are either both linked or both
	 * unlinked.
	 * 
	 * @param source
	 *            source resource
	 * @param destination
	 *            destination resource
	 * @return boolean <code>true</code> if both resources are either linked
	 *         or unlinked. <code>false</code> otherwise.
	 */
	protected boolean homogenousResources(IResource source,
			IResource destination) {
		boolean isSourceLinked = source.isLinked();
		boolean isDestinationLinked = destination.isLinked();
		return (isSourceLinked && isDestinationLinked || isSourceLinked == false
				&& isDestinationLinked == false);
	}
	/**
	 * Returns whether the given resource is accessible. Files and folders are
	 * always considered accessible and a project is accessible if it is open.
	 * 
	 * @param resource
	 *            the resource