In Liferay's Document and Media, I created a folder called myfolder containing a folder called subfolder containing a file called file.txt.
I have the DLFileEntry of file.txt.
How to get the string /folder/subfolder/file.txt?
Notes:
Context: For display/reporting purposes, I need to get the full path of the file, a bit like how it would appear in a breadcrumb.
getTreePath() gives identifiers such as /32701/ instead of folder names
I greped the whole Liferay 7 DXP SP4 for getBreadcrumbs and no source code came, even though a method with this name seemed to exist in Liferay 5.
Here is my implementation:
protected String fullPath(DLFileEntry file) throws PortalException {
String fileName = file.getFileName();
DLFolder folder = file.getFolder();
if (folder == null) {
return "/" + fileName;
}
else {
return fullPath(folder) + "/" + fileName;
}
}
protected String fullPath(DLFolder folder) throws PortalException {
String folderName = folder.getName();
DLFolder parent = folder.getParentFolder();
if (parent == null) {
return "/" + folderName;
}
else {
return fullPath(parent) + folderName;
}
}
All ideas to improve maintainability and performance are welcome!
Related
MediaFileInfo updateFile = MediaFileInfoProvider.GetMediaFileInfo(library.LibraryID, file.Name);
The above line of code is not removing the file from the media library as I expected. This is for a Scheduled Task in Kentico 11 MVC. The new file does get created and is renamed by the System to prevent conflicts.
I would like to delete the existing file before importing the updated version of the file. I would even be satisfied if the new file overwrote the existing file.
public void UpdateMediaFile(MediaLibraryInfo library, string fileName, string importPath)
{
//LumberMarketReport.pdf and PanelMarketReport.pdf
if (library != null)
{
// Prepares a path to a local file
string filePath = fileName;
// Prepares a CMS.IO.FileInfo object representing the local file
CMS.IO.FileInfo file = CMS.IO.FileInfo.New(filePath);
if (file != null)
{
#region "Delete Existing"
MediaFileInfo updateFile = MediaFileInfoProvider.GetMediaFileInfo(library.LibraryID, file.Name);
if (updateFile != null)
{
MediaFileInfoProvider.DeleteMediaFileInfo(updateFile);
}
#endregion
#region "Create File"
// Creates a new media library file object
MediaFileInfo mediaFile = new MediaFileInfo(filePath, library.LibraryID);
// Sets the media library file properties
mediaFile.FileName = file.Name;
mediaFile.FileDescription = "This file was added through the API.";
mediaFile.FilePath = "/"; // Sets the path within the media library's folder structure
mediaFile.FileExtension = file.Extension;
mediaFile.FileMimeType = MimeTypeHelper.GetMimetype(file.Extension);
mediaFile.FileSiteID = SiteContext.CurrentSiteID;
mediaFile.FileLibraryID = library.LibraryID;
mediaFile.FileSize = file.Length;
if (file.Name == "PanelMarketReport.pdf")
{
mediaFile.FileTitle = "Panel Market Report";
mediaFile.SetValue("FileCategoryID", 19);
}
else if (file.Name == "LumberMarketReport.pdf")
{
mediaFile.FileTitle = "Lumber Market Report";
mediaFile.SetValue("FileCategoryID", 57);
}
// Saves the media library file
MediaFileInfoProvider.SetMediaFileInfo(mediaFile);
#endregion
}
}
}
I would add logging to make sure your code is getting hit. Make sure updatefile isn't null. I think you have to pass in the file path in the media library and not just the name.
If I am not mistaken MediaFileInfoProvider.DeleteMediaFileInfo will remove a record from DB but not physically delete the file, so you need to call CMS.IO.FileInfo.Delete(filePath) to delete it from disk.
I our app (Xamarin C#) we download files from a server. At the end of a succeful download we get the URI to the newly-downloaded file and from the URI we get the file path:
Android.Net.Uri uri = downloadManager.GetUriForDownloadedFile(entry.Value);
path = u.EncodedPath;
In Android 4.4.2 and in Android 5 the uri and path look like this:
uri="file:///storage/emulated/0/Download/2.zip"
path = u.EncodedPath ="/storage/emulated/0/Download/2.zip"
We then use path to process the file.
The problem is that in Android 6 (on a real Nexus phone) we get a completely different uri and path:
uri="content://downloads/my_downloads/2802"
path="/my_downloads/2802"
This breaks my code by throwing a FileNotFound exception. Note that the downloaded file exists and is in the Downloads folder.
How can I use the URI I get from Android 6 to get the proper file path so I can to the file and process it?
Thank you,
donescamillo#gmail.com
I didn't get your actual requirement but it looks like you want to process file content. If so it can be done by reading the file content by using file descriptor of downloaded file. Code snippet as
ParcelFileDescriptor parcelFd = null;
try {
parcelFd = mDownloadManager.openDownloadedFile(downloadId);
FileInputStream fileInputStream = new FileInputStream(parcelFd.getFileDescriptor());
} catch (FileNotFoundException e) {
Log.w(TAG, "Error in opening file: " + e.getMessage(), e);
} finally {
if(parcelFd != null) {
try {
parcelFd.close();
} catch (IOException e) {
}
}
}
But I am also looking to move or delete that file after processing.
May you an build your URI with the download folder :
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).toURI();
It's work. #2016.6.24
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals( action)) {
DownloadManager downloadManager = (DownloadManager)context.getSystemService(Context.DOWNLOAD_SERVICE);
long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, 0);
DownloadManager.Query query = new DownloadManager.Query();
query.setFilterById(downloadId);
Cursor c = downloadManager.query(query);
if(c != null) {
if (c.moveToFirst()) {
int columnIndex = c.getColumnIndex(DownloadManager.COLUMN_STATUS);
if (DownloadManager.STATUS_SUCCESSFUL == c.getInt(columnIndex)) {
String downloadFileUrl = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
startInstall(context, Uri.parse(downloadFileUrl));
}
}
c.close();
}
}
}
private boolean startInstall(Context context, Uri uri) {
if(!new File( uri.getPath()).exists()) {
System.out.println( " local file has been deleted! ");
return false;
}
Intent intent = new Intent();
intent.addFlags( Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction( Intent.ACTION_VIEW);
intent.setDataAndType( uri, "application/vnd.android.package-archive");
context.startActivity( intent);
return true;
}
I have a Windows Phone application. I am using SharpZipLib to zip folders and its sub folders. This is zipping only the folder but the data inside the folders is not getting zipped. Can anyone guide me how to do this?
My code:
private void btnZip_Click(object sender, RoutedEventArgs e)
{
using (IsolatedStorageFile appStore = IsolatedStorageFile.GetUserStoreForApplication())
{
foreach (string filename in appStore.GetFileNames(directoryName + "/" + "*.txt"))
{
GetCompressedByteArray(filename);
}
textBlock2.Text = "Created file has Zipped Successfully";
}
}
public byte[] GetCompressedByteArray(string content)
{
byte[] compressedResult;
using (MemoryStream zippedMemoryStream = new MemoryStream())
{
using (ZipOutputStream zipOutputStream = new ZipOutputStream(zippedMemoryStream))
{
zipOutputStream.SetLevel(9);
byte[] buffer;
using (MemoryStream file = new MemoryStream(Encoding.UTF8.GetBytes(content)))
{
buffer = new byte[file.Length];
file.Read(buffer, 0, buffer.Length);
}
ZipEntry entry = new ZipEntry(content);
zipOutputStream.PutNextEntry(entry);
zipOutputStream.Write(buffer, 0, buffer.Length);
zipOutputStream.Finish();
}
compressedResult = zippedMemoryStream.ToArray();
}
WriteToIsolatedStorage(compressedResult);
return compressedResult;
}
public void WriteToIsolatedStorage(byte[] compressedBytes)
{
IsolatedStorageFile appStore = IsolatedStorageFile.GetUserStoreForApplication();
appStore.CreateDirectory(ZipFolder);
using (IsolatedStorageFileStream zipTemplateStream = new IsolatedStorageFileStream(ZipFolder+"/"+directoryName + ".zip", FileMode.OpenOrCreate, appStore))
using (BinaryWriter streamWriter = new BinaryWriter(zipTemplateStream))
{
streamWriter.Write(compressedBytes);
}
}
I think you'll find this guide helpful.
An excerpt from the above link
The ZipFile object provides a method called AddDirectory() that
accepts a parameter directoryName. The problem with this method is
that it doesn't add the files inside the specified directory but
instead just creates a directory inside the zip file. To make this
work, you need to get the files inside that directory by looping thru
all objects in that directory and adding them one at a time. I was
able to accomplish this task by creating a recursive function that
drills through the whole directory structure of the folder you want to
zip. Below is a snippet of the function.
I guess you too are facing the same problem where the folder is added to the zip file, but the contents and sub folders are not zipped.
Hope this helps.
Have a look over here for a code sample on how to use SharpZipLib to zip a root folder including nested folders.
I want to make the application where I can get all the images no matter whether it is in phone or in external memory. I want to import all that images in my application. How can it be possible? I came to know that it is possible through file connection. But not getting exact idea.
Get all the file system roots using FileSystemRegistry.listRoots()
Open connection to each root in turn using FileConnection fconn = (FileConnection)Connector.open(root)
List the folder using fconn.list().
For each entry in the list, if it ends with an image extension (file.getName().endsWith(".png") etc), then it's an image.
If the entry is a folder (file.isDirectory() returns true) then use fconn.setFileConnection(folder) to traverse into that directory/
Do the same recursively for all folders in all roots.
Here is a code snippet I once used for my application. It more or less does the same in funkybros steps.
protected void showFiles() {
if (path == null) {
Enumeration e = FileSystemRegistry.listRoots();
path = DATAHEAD; //DATAHEAD = file:///
setTitle(path);
while (e.hasMoreElements()) {
String root = (String) e.nextElement();
append(root, null);
}
myForm.getDisplay().setCurrent(this);
} else {
//this if-else just sets the title of the Listing Form
if (selectedItem != null) {
setTitle(path + selectedItem);
}
else {
setTitle(path);
}
try {
// works when users opens a directory, creates a connection to that directory
if (selectedItem != null) {
fileConncetion = (FileConnection) Connector.open(path + selectedItem, Connector.READ);
} else // works when presses 'Back' to go one level above/up
{
fileConncetion = (FileConnection) Connector.open(path, Connector.READ);
}
// Check if the selected item is a directory
if (fileConncetion.isDirectory()) {
if (selectedItem != null) {
path = path + selectedItem;
selectedItem = null;
}
//gathers the directory elements
Enumeration files = fileConncetion.list();
while (files.hasMoreElements()) {
String file = (String) files.nextElement();
append(file, null);
}
//
myForm.getDisplay().setCurrent(this);
try {
if (fileConncetion != null) {
fileConncetion.close();
fileConncetion = null;
}
} catch (IOException ex) {
ex.printStackTrace();
}
}//if (fileConncetion.isDirectory())
else {
System.out.println(path);
//if it gets a file then calls the publishToServer() method
myForm.publishToServer();
}
I'm making a service that among other has the "photo albums" feature that serve photos to users. User has to be "allowed" to see the photo from the album. So sending the direct link to other person shouldn't allow to view photo.
Photos are stored in the folder outside of the context.
What I need to do is to perform some checks when user requests the photo and then if checks are OK - serve the file. I want to avoid making a wheel and just let tomcat serve the image as it usually does for static files. Can you give some advice on that?
Ok, guys.
After struggling hard with this question I think I've finally found out what to do to solve it. First of all it looks like the question actually decomposes into two independent tasks. One of them is securing access to some resources and second one is feeding resources from the folder outside of the context.
First task is trivial and can be solved by writing a simple filter hanged to "/".
Second task is much less trivial but fortunately also can be resolved. Tomcat uses the implementation of javax.naming.directory.DirContext to load all resources of the given web application including class files. It also allows you to provide the custom implementation of this interface and configure it in the context.xml file. The default implementation is org.apache.naming.resources.FileDirContext. Details here: http://tomcat.apache.org/tomcat-6.0-doc/config/resources.html
I've created my own implementation of DirContext by simply extending FileDirContext. Luckily enough there was a single method that had to be overwritten in order to "hook up" file discovery. The method is called file().
I'm posting my test code here. It is far from perfect and does not take into account the corner cases like renaming files but I don't think that these are needed under a normal run of the server.
The basic idea under this code is to check if the path starts with "virtual directory" prefix and if it is - search for file in the other place in the filesystem (I know there is some duplicate code there but I hope you're not that lazy to remove it if you ever want to use it :-). setVirtualName and setVirtualBase are called automatically to inject the configuration params.
/**
* TODO: add javadocs
*
* #author Juriy Bura
*/
public class VirtualFolderDirContext extends FileDirContext {
private String virtualName;
private String realName;
private File virtualBase;
private String absoluteVirtualBase;
public VirtualFolderDirContext() {
super();
}
public VirtualFolderDirContext(Hashtable env) {
super(env);
}
public void setVirtualName(String path) {
virtualName = path;
}
public void setVirtualBase(String base) {
this.realName = base;
virtualBase = new File(realName);
try {
virtualBase = virtualBase.getCanonicalFile();
} catch (IOException e) {
// Ignore
}
this.absoluteVirtualBase = virtualBase.getAbsolutePath();
}
protected File file(String name) {
File file = null;
boolean virtualFile = name.startsWith(virtualName + "/");
if (virtualFile) {
file = new File(virtualBase, name.substring(virtualName.length()));
} else {
file = new File(base, name);
}
if (file.exists() && file.canRead()) {
if (allowLinking)
return file;
// Check that this file belongs to our root path
String canPath = null;
try {
canPath = file.getCanonicalPath();
} catch (IOException e) {
}
if (canPath == null)
return null;
// Check to see if going outside of the web application root
if (!canPath.startsWith(absoluteBase) && !canPath.startsWith(absoluteVirtualBase)) {
return null;
}
// Case sensitivity check
if (caseSensitive) {
String fileAbsPath = file.getAbsolutePath();
if (fileAbsPath.endsWith("."))
fileAbsPath = fileAbsPath + "/";
String absPath = normalize(fileAbsPath);
if (canPath != null)
canPath = normalize(canPath);
if (virtualFile) {
if ((absoluteVirtualBase.length() < absPath.length())
&& (absoluteVirtualBase.length() < canPath.length())) {
absPath = absPath.substring(absoluteVirtualBase.length() + 1);
if ((canPath == null) || (absPath == null))
return null;
if (absPath.equals(""))
absPath = "/";
canPath = canPath.substring(absoluteVirtualBase.length() + 1);
if (canPath.equals(""))
canPath = "/";
if (!canPath.equals(absPath))
return null;
}
} else {
if ((absoluteBase.length() < absPath.length())
&& (absoluteBase.length() < canPath.length())) {
absPath = absPath.substring(absoluteBase.length() + 1);
if ((canPath == null) || (absPath == null))
return null;
if (absPath.equals(""))
absPath = "/";
canPath = canPath.substring(absoluteBase.length() + 1);
if (canPath.equals(""))
canPath = "/";
if (!canPath.equals(absPath))
return null;
}
}
}
} else {
return null;
}
return file;
}
}
After you have this class in place you have to jar it and put that jar into the Tomcat lib folder. For obvious reasons it cannot go together with war file. In your context.xml you should add a config lines like these:
<?xml version="1.0" encoding="UTF-8"?>
<Context antiResourceLocking="true" antiJARLocking="true">
<Resources
className="com.juriy.tomcat.virtualdir.VirtualFolderDirContext"
virtualName="/upload"
virtualBase="c:/temp/up">
</Resources>
...
...
Now any time user asks for /upload/ it will be resolved to c:\temp. With this technique you can implement loading resources from virtually any location: http, shared folder, database, even version control system. So it is pretty cool.
P.S. I've killed the whole day to make this all work together so don't hesitate to give me your vote if you like the answer :-))
Cheers
Juriy