/*******************************************************************************
* Copyright (c) 2000, 2009 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
*******************************************************************************/
package org.eclipse.core.internal.resources;
import java.net.URI;
import java.util.*;
import org.eclipse.core.filesystem.URIUtil;
import org.eclipse.core.internal.utils.FileUtil;
import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.*;
public class WorkspaceRoot extends Container implements IWorkspaceRoot {
/**
* As an optimization, we store a table of project handles
* that have been requested from this root. This maps project
* name strings to project handles.
*/
private final Map projectTable = Collections.synchronizedMap(new HashMap(16));
/**
* Cache of the canonicalized platform location.
*/
private final IPath workspaceLocation;
protected WorkspaceRoot(IPath path, Workspace container) {
super(path, container);
Assert.isTrue(path.equals(Path.ROOT));
workspaceLocation = FileUtil.canonicalPath(Platform.getLocation());
Assert.isNotNull(workspaceLocation);
}
/**
* @see IWorkspaceRoot#delete(boolean, boolean, IProgressMonitor)
*/
public void delete(boolean deleteContent, boolean force, IProgressMonitor monitor) throws CoreException {
int updateFlags = force ? IResource.FORCE : IResource.NONE;
updateFlags |= deleteContent ? IResource.ALWAYS_DELETE_PROJECT_CONTENT : IResource.NEVER_DELETE_PROJECT_CONTENT;
delete(updateFlags, monitor);
}
/**
* @see org.eclipse.core.internal.resources.Resource#delete(boolean, org.eclipse.core.runtime.IProgressMonitor)
*/
public void delete(boolean force, IProgressMonitor monitor) throws CoreException {
int updateFlags = force ? IResource.FORCE : IResource.NONE;
delete(updateFlags, monitor);
}
/**
* @see org.eclipse.core.internal.resources.Resource#exists(int, boolean)
*/
public boolean exists(int flags, boolean checkType) {
return true;
}
/**
* @see org.eclipse.core.resources.IWorkspaceRoot#findContainersForLocation(org.eclipse.core.runtime.IPath)
* @deprecated
*/
public IContainer[] findContainersForLocation(IPath location) {
return findContainersForLocationURI(URIUtil.toURI(location.makeAbsolute()));
}
/**
* @see org.eclipse.core.resources.IWorkspaceRoot#findContainersForLocationURI(java.net.URI)
*/
public IContainer[] findContainersForLocationURI(URI location) {
return findContainersForLocationURI(location, NONE);
}
/**
* @see org.eclipse.core.resources.IWorkspaceRoot#findContainersForLocationURI(java.net.URI, int)
*/
public IContainer[] findContainersForLocationURI(URI location, int memberFlags) {
if (!location.isAbsolute())
throw new IllegalArgumentException();
return (IContainer[]) getLocalManager().allResourcesFor(location, false, memberFlags);
}
/**
* @see org.eclipse.core.resources.IWorkspaceRoot#findFilesForLocation(org.eclipse.core.runtime.IPath)
* @deprecated
*/
public IFile[] findFilesForLocation(IPath location) {
return findFilesForLocationURI(URIUtil.toURI(location.makeAbsolute()));
}
/**
* @see org.eclipse.core.resources.IWorkspaceRoot#findFilesForLocationURI(java.net.URI)
*/
public IFile[] findFilesForLocationURI(URI location) {
return findFilesForLocationURI(location, NONE);
}
/**
* @see org.eclipse.core.resources.IWorkspaceRoot#findFilesForLocationURI(java.net.URI, int)
*/
public IFile[] findFilesForLocationURI(URI location, int memberFlags) {
if (!location.isAbsolute())
throw new IllegalArgumentException();
return (IFile[]) getLocalManager().allResourcesFor(location, true, memberFlags);
}
/**
* @see IWorkspaceRoot#getContainerForLocation(IPath)
*/
public IContainer getContainerForLocation(IPath location) {
return getLocalManager().containerForLocation(location);
}
/**
* @see IContainer#getDefaultCharset(boolean)
*/
public String getDefaultCharset(boolean checkImplicit) {
if (checkImplicit)
return ResourcesPlugin.getEncoding();
String enc = ResourcesPlugin.getPlugin().getPluginPreferences().getString(ResourcesPlugin.PREF_ENCODING);
return enc == null || enc.length() == 0 ? null : enc;
}
/**
* @see IWorkspaceRoot#getFileForLocation(IPath)
*/
public IFile getFileForLocation(IPath location) {
return getLocalManager().fileForLocation(location);
}
/**
* @see IResource#getLocalTimeStamp()
*/
public long getLocalTimeStamp() {
return IResource.NULL_STAMP;
}
/**
* @see IResource#getLocation()
*/
public IPath getLocation() {
return workspaceLocation;
}
/**
* @see IResource#getName()
*/
public String getName() {
return ""; //$NON-NLS-1$
}
/**
* @see IResource#getParent()
*/
public IContainer getParent() {
return null;
}
/**
* @see IResource#getProject()
*/
public IProject getProject() {
return null;
}
/**
* @see IWorkspaceRoot#getProject(String)
*/
public IProject getProject(String name) {
//first check our project cache
Project result = (Project) projectTable.get(name);
if (result == null) {
IPath projectPath = new Path(null, name).makeAbsolute();
String message = "Path for project must have only one segment."; //$NON-NLS-1$
Assert.isLegal(projectPath.segmentCount() == ICoreConstants.PROJECT_SEGMENT_LENGTH, message);
//try to get the project using a canonical name
String canonicalName = projectPath.lastSegment();
result = (Project) projectTable.get(canonicalName);
if (result != null)
return result;
result = new Project(projectPath, workspace);
projectTable.put(canonicalName, result);
}
return result;
}
/**
* @see IResource#getProjectRelativePath()
*/
public IPath getProjectRelativePath() {
return Path.EMPTY;
}
/**
* @see IWorkspaceRoot#getProjects()
*/
public IProject[] getProjects() {
return getProjects(IResource.NONE);
}
/**
* @see IWorkspaceRoot#getProjects(int)
*/
public IProject[] getProjects(int memberFlags) {
IResource[] roots = getChildren(memberFlags);
IProject[] result = new IProject[roots.length];
System.arraycopy(roots, 0, result, 0, roots.length);
return result;
}
/**
* @see IResource#getType()
*/
public int getType() {
return IResource.ROOT;
}
public void internalSetLocal(boolean flag, int depth) throws CoreException {
// do nothing for the root, but call for its children
if (depth == IResource.DEPTH_ZERO)
return;
if (depth == IResource.DEPTH_ONE)
depth = IResource.DEPTH_ZERO;
// get the children via the workspace since we know that this
// resource exists (it is local).
IResource[] children = getChildren(IResource.NONE);
for (int i = 0; i < children.length; i++)
((Resource) children[i]).internalSetLocal(flag, depth);
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.resources.Resource#isDerived(int)
*/
public boolean isDerived(int options) {
return false;//the root is never derived
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.resources.Resource#isHidden()
*/
public boolean isHidden() {
return false;//the root is never hidden
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.resources.Resource#isHidden(int)
*/
public boolean isHidden(int options) {
return false;//the root is never hidden
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.resources.Resource#isTeamPrivateMember(int)
*/
public boolean isTeamPrivateMember(int options) {
return false;//the root is never a team private member
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.resources.Resource#isLinked(int)
*/
public boolean isLinked(int options) {
return false;//the root is never linked
}
/**
* @see IResource#isLocal(int)
* @deprecated
*/
public boolean isLocal(int depth) {
// the flags parameter is ignored for the workspace root so pass anything
return isLocal(-1, depth);
}
/**
* @see IResource#isLocal(int)
* @deprecated
*/
public boolean isLocal(int flags, int depth) {
// don't check the flags....workspace root is always local
if (depth == DEPTH_ZERO)
return true;
if (depth == DEPTH_ONE)
depth = DEPTH_ZERO;
// get the children via the workspace since we know that this
// resource exists (it is local).
IResource[] children = getChildren(IResource.NONE);
for (int i = 0; i < children.length; i++)
if (!children[i].isLocal(depth))
return false;
return true;
}
/**
* @see IResource#isPhantom()
*/
public boolean isPhantom() {
return false;
}
/**
* @see IContainer#setDefaultCharset(String)
* @deprecated Replaced by {@link #setDefaultCharset(String, IProgressMonitor)} which
* is a workspace operation and reports changes in resource deltas.
*/
public void setDefaultCharset(String charset) {
// directly change the Resource plugin's preference for encoding
Preferences resourcesPreferences = ResourcesPlugin.getPlugin().getPluginPreferences();
if (charset != null)
resourcesPreferences.setValue(ResourcesPlugin.PREF_ENCODING, charset);
else
resourcesPreferences.setToDefault(ResourcesPlugin.PREF_ENCODING);
}
public void setHidden(boolean isHidden) {
//workspace root cannot be set hidden
}
/**
* @see IResource#setLocalTimeStamp(long)
*/
public long setLocalTimeStamp(long value) {
if (value < 0)
throw new IllegalArgumentException("Illegal time stamp: " + value); //$NON-NLS-1$
//can't set local time for root
return value;
}
/**
* @deprecated
* @see IResource#setReadOnly(boolean)
*/
public void setReadOnly(boolean readonly) {
//can't set the root read only
}
/**
* @see IResource#touch(IProgressMonitor)
*/
public void touch(IProgressMonitor monitor) {
// do nothing for the workspace root
}
}
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