| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Serge Beauchamp (Freescale Semiconductor) - [229633] Group and Project Path Variable Support |
| * James Blackburn (Broadcom Corp.) - ongoing development |
| *******************************************************************************/ |
| package org.eclipse.core.internal.resources; |
| |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.*; |
| |
| /** |
| * Object for describing the characteristics of linked resources that are stored |
| * in the project description. |
| */ |
| public class LinkDescription implements Comparable<LinkDescription> { |
| public static final URI VIRTUAL_LOCATION = getVirtualLocation(); |
| |
| private static URI getVirtualLocation() { |
| try { |
| return new URI("virtual:/virtual"); //$NON-NLS-1$ |
| } catch (URISyntaxException e) { |
| //cannot happen |
| return null; |
| } |
| } |
| |
| private URI localLocation; |
| |
| /** |
| * The project relative path. |
| */ |
| private IPath path; |
| /** |
| * The resource type (IResource.FILE or IResoruce.FOLDER) |
| */ |
| private int type; |
| |
| public LinkDescription() { |
| this.path = Path.EMPTY; |
| this.type = -1; |
| } |
| |
| public LinkDescription(IResource linkedResource, URI location) { |
| super(); |
| Assert.isNotNull(linkedResource); |
| Assert.isNotNull(location); |
| this.type = linkedResource.getType(); |
| this.path = linkedResource.getProjectRelativePath(); |
| this.localLocation = location; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (!(o.getClass() == LinkDescription.class)) |
| return false; |
| LinkDescription other = (LinkDescription) o; |
| return localLocation.equals(other.localLocation) && path.equals(other.path) && type == other.type; |
| } |
| |
| public URI getLocationURI() { |
| return localLocation; |
| } |
| |
| /** |
| * Returns the project relative path of the resource that is linked. |
| * @return the project relative path of the resource that is linked. |
| */ |
| public IPath getProjectRelativePath() { |
| return path; |
| } |
| |
| public int getType() { |
| return type; |
| } |
| |
| public boolean isGroup() { |
| return localLocation.equals(VIRTUAL_LOCATION); |
| } |
| |
| @Override |
| public int hashCode() { |
| return type + path.hashCode() + localLocation.hashCode(); |
| } |
| |
| public void setLocationURI(URI location) { |
| this.localLocation = location; |
| } |
| |
| public void setPath(IPath path) { |
| this.path = path; |
| } |
| |
| public void setType(int type) { |
| this.type = type; |
| } |
| |
| /** |
| * Compare link descriptions in a way that sorts them topologically by path. |
| * This is important to ensure we process links in topological (breadth-first) order when reconciling |
| * links. See {@link Project#reconcileLinksAndGroups(ProjectDescription)}. |
| */ |
| @Override |
| public int compareTo(LinkDescription that) { |
| IPath path1 = this.getProjectRelativePath(); |
| IPath path2 = that.getProjectRelativePath(); |
| int count1 = path1.segmentCount(); |
| int compare = count1 - path2.segmentCount(); |
| if (compare != 0) |
| return compare; |
| for (int i = 0; i < count1; i++) { |
| compare = path1.segment(i).compareTo(path2.segment(i)); |
| if (compare != 0) |
| return compare; |
| } |
| return 0; |
| } |
| } |