@SuppressWarnings("deprecation")
public IProject importExample(ExampleData edata, IProgressMonitor monitor) {
	try {
		IProjectDescription original = ResourcesPlugin.getWorkspace()
				.loadProjectDescription(new Path(edata.getProjectDir().getAbsolutePath()).append("/.project"));
		IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(edata.getProjectDir().getName());

		IProjectDescription clone = ResourcesPlugin.getWorkspace().newProjectDescription(original.getName());
		clone.setBuildSpec(original.getBuildSpec());
		clone.setComment(original.getComment());
		clone.setDynamicReferences(original.getDynamicReferences());
		clone.setNatureIds(original.getNatureIds());
		clone.setReferencedProjects(original.getReferencedProjects());
		if (project.exists()) {
			return project;
		}
		project.create(clone, monitor);
		project.open(monitor);

		@SuppressWarnings("unchecked")
		List<IFile> filesToImport = FileSystemStructureProvider.INSTANCE.getChildren(edata.getProjectDir());
		ImportOperation io = new ImportOperation(project.getFullPath(), edata.getProjectDir(),
				FileSystemStructureProvider.INSTANCE, new IOverwriteQuery() {

					@Override
					public String queryOverwrite(String pathString) {
						return IOverwriteQuery.ALL;
					}

				}, filesToImport);
		io.setOverwriteResources(true);
		io.setCreateContainerStructure(false);
		io.run(monitor);
		project.refreshLocal(IProject.DEPTH_INFINITE, monitor);
		return project;
	} catch (Exception e) {
		e.printStackTrace();
	}
	return null;
}
 

/**
 * Generate a new list of file system elements for the specified folder.
 */
private static List<TraceFileSystemElement> createElementsForFolder(IFolder folder) {
    // Create the new import provider and root element based on the
    // specified folder
    FileSystemObjectImportStructureProvider importStructureProvider = new FileSystemObjectImportStructureProvider(FileSystemStructureProvider.INSTANCE, null);
    IFileSystemObject rootElement = importStructureProvider.getIFileSystemObject(new File(folder.getLocation().toOSString()));
    TraceFileSystemElement createRootElement = TraceFileSystemElement.createRootTraceFileElement(rootElement, importStructureProvider);
    List<TraceFileSystemElement> list = new LinkedList<>();
    createRootElement.getAllChildren(list);
    return list;
}
 

/**
 * Extract all file system elements (File) to destination folder (typically
 * workspace/TraceProject/.traceImport)
 */
private void extractAllArchiveFiles(List<TraceFileSystemElement> fileSystemElements, IFolder destFolder, IPath baseSourceContainerPath, IProgressMonitor progressMonitor) throws InterruptedException, CoreException, InvocationTargetException {
    SubMonitor subMonitor = SubMonitor.convert(progressMonitor, fileSystemElements.size());
    ListIterator<TraceFileSystemElement> fileSystemElementsIter = fileSystemElements.listIterator();
    while (fileSystemElementsIter.hasNext()) {
        ModalContext.checkCanceled(subMonitor);

        SubMonitor elementProgress = subMonitor.newChild(1);
        TraceFileSystemElement element = fileSystemElementsIter.next();
        elementProgress.setTaskName(Messages.ImportTraceWizard_ExamineOperationTaskName + " " + element.getFileSystemObject().getAbsolutePath()); //$NON-NLS-1$
        File archiveFile = (File) element.getFileSystemObject().getRawFileSystemObject();
        boolean isArchiveFileElement = element.getFileSystemObject() instanceof FileFileSystemObject && ArchiveUtil.isArchiveFile(archiveFile);
        if (isArchiveFileElement) {
            elementProgress = SubMonitor.convert(elementProgress, 4);
            IPath makeAbsolute = baseSourceContainerPath.makeAbsolute();
            IPath relativeToSourceContainer = new Path(element.getFileSystemObject().getAbsolutePath()).makeRelativeTo(makeAbsolute);
            IFolder folder = safeCreateExtractedFolder(destFolder, relativeToSourceContainer, elementProgress.newChild(1));
            extractArchiveToFolder(archiveFile, folder, elementProgress.newChild(1));

            // Delete original archive, we don't want to import this, just
            // the extracted content
            IFile fileRes = destFolder.getFile(relativeToSourceContainer);
            fileRes.delete(true, elementProgress.newChild(1));
            IPath newPath = destFolder.getFullPath().append(relativeToSourceContainer);
            // Rename extracted folder (.extract) to original archive name
            folder.move(newPath, true, elementProgress.newChild(1));
            folder = ResourcesPlugin.getWorkspace().getRoot().getFolder(newPath);
            elementProgress.subTask(""); //$NON-NLS-1$

            // Create the new import provider and root element based on
            // the newly extracted temporary folder
            FileSystemObjectImportStructureProvider importStructureProvider = new FileSystemObjectImportStructureProvider(FileSystemStructureProvider.INSTANCE, null);
            IFileSystemObject rootElement = importStructureProvider.getIFileSystemObject(new File(folder.getLocation().toOSString()));
            TraceFileSystemElement newElement = TraceFileSystemElement.createRootTraceFileElement(rootElement, importStructureProvider);
            List<TraceFileSystemElement> extractedChildren = new ArrayList<>();
            newElement.getAllChildren(extractedChildren);
            extractAllArchiveFiles(extractedChildren, folder, folder.getLocation(), progressMonitor);
        }
    }
}
 

private IProject doCreateProject(ProjectCandidate pc, IProgressMonitor monitor) throws CoreException, InterruptedException {
	HybridProjectCreator projectCreator = new HybridProjectCreator();
	Widget w = pc.getWidget();
	String projectName = pc.getProjectName();
	URI location = null;
	if(!copyFiles){
		location = pc.wwwLocation.getParentFile().toURI();
	}
	IProject project = projectCreator.createProject(projectName, location, w.getName(), w.getId(), null, monitor);
	if(copyFiles){
		ImportOperation operation = new ImportOperation(project
				.getFullPath(), pc.wwwLocation.getParentFile(), FileSystemStructureProvider.INSTANCE
				, this);
		operation.setContext(getShell());
		operation.setOverwriteResources(true); 
		operation.setCreateContainerStructure(false);
		
		try {
			operation.run(monitor);
		} catch (InvocationTargetException e) {
			if(e.getCause() != null  && e.getCause() instanceof CoreException){
				CoreException corex = (CoreException) e.getCause();
				throw corex;
			}
		}
		IStatus status = operation.getStatus();
		if (!status.isOK())
			throw new CoreException(status);
	}
	return project;

}
 

@Override
protected void execute(IProgressMonitor monitor) throws CoreException, InvocationTargetException, InterruptedException {
    int importOptionFlags = ImportTraceWizardPage.OPTION_IMPORT_UNRECOGNIZED_TRACES | ImportTraceWizardPage.OPTION_OVERWRITE_EXISTING_RESOURCES |
            ImportTraceWizardPage.OPTION_PRESERVE_FOLDER_STRUCTURE;

    // Temporary directory to contain any downloaded files
    IFolder tempDestination = fDestinationFolder.getProject().getResource().getFolder(TRACE_HTTP_IMPORT_TEMP_FOLDER);
    String tempDestinationFolderPath = tempDestination.getLocation().toOSString();
    if (tempDestination.exists()) {
        tempDestination.delete(true, monitor);
    }
    tempDestination.create(IResource.HIDDEN, true, monitor);

    // Download trace/traces
    List<File> downloadedTraceList = new ArrayList<>();
    TraceDownloadStatus status = DownloadTraceHttpHelper.downloadTraces(fSourceUrl, tempDestinationFolderPath);
    if (status.isOk()) {
        List<TraceDownloadStatus> children = status.getChildren();
        for (TraceDownloadStatus traceDownloadStatus : children) {
            downloadedTraceList.add(traceDownloadStatus.getDownloadedFile());
        }
    } else if (status.isTimeout()) {
        if (tempDestination.exists()) {
            tempDestination.delete(true, monitor);
        }
        throw new InterruptedException();
    }

    boolean isArchive = false;
    if (!downloadedTraceList.isEmpty()) {
        isArchive = ArchiveUtil.isArchiveFile(downloadedTraceList.get(0));
    }

    FileSystemObjectImportStructureProvider provider = null;
    IFileSystemObject object = null;

    String archiveFolderName = null;
    if (isArchive) {
        // If it's an archive there is only 1 element in this list
        File downloadedTrace = downloadedTraceList.get(0);
        Pair<IFileSystemObject, FileSystemObjectImportStructureProvider> rootObjectAndProvider = ArchiveUtil.getRootObjectAndProvider(downloadedTrace, null);
        provider = rootObjectAndProvider.getSecond();
        object = rootObjectAndProvider.getFirst();
        archiveFolderName = downloadedTrace.getName();
    } else {
        provider = new FileSystemObjectImportStructureProvider(FileSystemStructureProvider.INSTANCE, null);
        object = provider.getIFileSystemObject(new File(tempDestinationFolderPath));
    }

    TraceFileSystemElement root = TraceFileSystemElement.createRootTraceFileElement(object, provider);

    List<TraceFileSystemElement> fileSystemElements = new ArrayList<>();
    root.getAllChildren(fileSystemElements);

    IPath sourceContainerPath = new Path(tempDestinationFolderPath);
    IPath destinationContainerPath = fDestinationFolder.getPath();

    TraceValidateAndImportOperation validateAndImportOperation = new TraceValidateAndImportOperation(null, fileSystemElements, null, sourceContainerPath, destinationContainerPath, isArchive, importOptionFlags, fDestinationFolder, null, null, archiveFolderName, false);
    validateAndImportOperation.run(monitor);
    provider.dispose();

    // Clean the temporary directory
    if (tempDestination.exists()) {
        tempDestination.delete(true, monitor);
    }
}