/*******************************************************************************
* Copyright (c) 2007, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse 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.wst.jsdt.web.core.internal.project;
import java.lang.ref.Reference;
import java.lang.ref.SoftReference;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.wst.common.componentcore.ComponentCore;
import org.eclipse.wst.common.componentcore.ModuleCoreNature;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.common.componentcore.resources.IVirtualFile;
import org.eclipse.wst.common.componentcore.resources.IVirtualFolder;
import org.eclipse.wst.common.componentcore.resources.IVirtualReference;
import org.eclipse.wst.common.componentcore.resources.IVirtualResource;
/**
* Wrapper class for all Facet and ModuleCore-related calls. If the Facet or
* ModuleCore bundles are not available, this class will not load, or if it
* does, its methods will cause NoClassDefFoundErrors. This allows us to
* compartmentalize the dependencies.
*
*/
final class ModuleCoreSupportDelegate {
private static final String SLASH = "/";
private static Map fResolvedMap = new HashMap();
/**
* @param path
* - the full path to a resource within the workspace
* @return - the runtime path of the resource if one exists, null
* otherwise
*/
static IPath getRuntimePath(IPath path) {
if (path == null)
return null;
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(path.segment(0));
if (!ModuleCoreNature.isFlexibleProject(project))
return null;
IVirtualResource[] virtualResources = ComponentCore.createResources(ResourcesPlugin.getWorkspace().getRoot().getFile(path));
if (virtualResources != null && virtualResources.length > 0) {
return virtualResources[0].getRuntimePath();
}
return null;
}
/**
* @param project
* @return the IPath to the "root" of the web contents
*/
static IPath getWebContentRootPath(IProject project) {
if (project == null)
return null;
if (!ModuleCoreNature.isFlexibleProject(project))
return null;
IPath path = null;
IVirtualComponent component = ComponentCore.createComponent(project);
if (component != null && component.exists()) {
path = component.getRootFolder().getWorkspaceRelativePath();
}
return path;
}
/**
* @param basePath
* - the full path to a resource within the workspace
* @param reference
* - the reference string to resolve
* @return - the full path within the workspace that corresponds to the
* given reference according to the virtual pathing support
*/
static IPath resolve(IPath basePath, String reference) {
if (reference == null || basePath == null || basePath.segmentCount() == 0)
return null;
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(basePath.segment(0));
if (!ModuleCoreNature.isFlexibleProject(project))
return null;
if (basePath.segmentCount() > 1) {
/*
* It can take the better part of a full second to do this, so
* cache the result.
*/
IPath resolved = null;
Map mapForBaseResource = null;
mapForBaseResource = (Map) fResolvedMap.get(basePath);
if (mapForBaseResource != null) {
Reference resolvedReference = (Reference) mapForBaseResource.get(reference);
if (resolvedReference != null)
resolved = (IPath) resolvedReference.get();
}
else {
mapForBaseResource = new HashMap();
fResolvedMap.put(basePath, mapForBaseResource);
}
if (resolved == null) {
IFile baseFile = ResourcesPlugin.getWorkspace().getRoot().getFile(basePath);
IVirtualResource[] virtualResources = ComponentCore.createResources(baseFile);
for (int i = 0; i < virtualResources.length; i++) {
IPath baseRuntimePath = virtualResources[i].getRuntimePath();
IPath referenceRuntimePath = null;
if (reference.startsWith(SLASH)) {
referenceRuntimePath = new Path(reference);
}
else {
referenceRuntimePath = baseRuntimePath.removeLastSegments(1).append(reference);
}
IVirtualFile virtualFile = ComponentCore.createFile(project, referenceRuntimePath);
if (virtualFile != null && virtualFile.exists()) {
IFile[] underlyingFiles = virtualFile.getUnderlyingFiles();
for (int j = 0; j < underlyingFiles.length; j++) {
if (underlyingFiles[j].getProject().equals(project) && underlyingFiles[j].exists()) {
mapForBaseResource.put(reference, new SoftReference(underlyingFiles[j].getFullPath()));
resolved = underlyingFiles[j].getFullPath();
}
}
}
else {
// http://bugs.eclipse.org/338751
IVirtualFolder virtualFolder = ComponentCore.createFolder(project, referenceRuntimePath);
if (virtualFolder != null && virtualFolder.exists()) {
IContainer[] underlyingFolders = virtualFolder.getUnderlyingFolders();
for (int j = 0; j < underlyingFolders.length; j++) {
if (underlyingFolders[j].getProject().equals(project) && underlyingFolders[j].isAccessible()) {
return underlyingFolders[j].getFullPath();
}
}
}
else {
// check assembled projects
return resolveInReferenced(project, referenceRuntimePath);
}
}
}
}
return resolved;
}
else {
IVirtualFile virtualFile = ComponentCore.createFile(project, new Path(reference));
if (virtualFile != null && virtualFile.exists()) {
return virtualFile.getUnderlyingFile().getFullPath();
}
}
return null;
}
private static IPath resolveInReferenced(IProject project, IPath runtimeReference) {
IVirtualReference[] references = ComponentCore.createComponent(project).getReferences();
if (references != null) {
for (int i = 0; i < references.length; i++) {
IVirtualComponent referencedComponent = references[i].getReferencedComponent();
if (referencedComponent == null)
continue;
IVirtualComponent component = referencedComponent.getComponent();
if (component == null)
continue;
IVirtualFolder rootFolder = component.getRootFolder();
if (rootFolder == null)
continue;
// overlay?
IVirtualResource member = rootFolder.findMember(runtimeReference);
if (member != null) {
return member.getWorkspaceRelativePath();
}
}
}
return null;
}
}