X-Git-Url: http://git.linex4red.de/pub/Android/ownCloud.git/blobdiff_plain/938c78466b89ee30d439462ded5b4b25c79190ce..9060663f66a4c518bd428d4d68e035b64e24c26c:/src/com/owncloud/android/datamodel/FileDataStorageManager.java

diff --git a/src/com/owncloud/android/datamodel/FileDataStorageManager.java b/src/com/owncloud/android/datamodel/FileDataStorageManager.java
index 7bb29d46..7e5e935a 100644
--- a/src/com/owncloud/android/datamodel/FileDataStorageManager.java
+++ b/src/com/owncloud/android/datamodel/FileDataStorageManager.java
@@ -1,10 +1,10 @@
 /* ownCloud Android client application
  *   Copyright (C) 2012  Bartek Przybylski
+ *   Copyright (C) 2012-2013 ownCloud Inc.
  *
  *   This program is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation, either version 3 of the License, or
- *   (at your option) any later version.
+ *   it under the terms of the GNU General Public License version 2,
+ *   as published by the Free Software Foundation.
  *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -20,49 +20,77 @@ package com.owncloud.android.datamodel;
 
 import java.io.File;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Iterator;
-import java.util.List;
 import java.util.Vector;
 
+import com.owncloud.android.Log_OC;
 import com.owncloud.android.db.ProviderMeta;
 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
-import com.owncloud.android.files.services.FileDownloader;
+import com.owncloud.android.utils.FileStorageUtils;
 
 import android.accounts.Account;
 import android.content.ContentProviderClient;
 import android.content.ContentProviderOperation;
 import android.content.ContentProviderResult;
 import android.content.ContentResolver;
+import android.content.ContentUris;
 import android.content.ContentValues;
 import android.content.OperationApplicationException;
 import android.database.Cursor;
 import android.net.Uri;
-import android.os.Environment;
 import android.os.RemoteException;
-import android.util.Log;
 
-public class FileDataStorageManager implements DataStorageManager {
+public class FileDataStorageManager {
+
+    public static final int ROOT_PARENT_ID = 0;
 
     private ContentResolver mContentResolver;
-    private ContentProviderClient mContentProvider;
+    private ContentProviderClient mContentProviderClient;
     private Account mAccount;
 
-    private static String TAG = "FileDataStorageManager";
+    private static String TAG = FileDataStorageManager.class.getSimpleName();
 
+    
     public FileDataStorageManager(Account account, ContentResolver cr) {
-        mContentProvider = null;
+        mContentProviderClient = null;
         mContentResolver = cr;
         mAccount = account;
     }
 
     public FileDataStorageManager(Account account, ContentProviderClient cp) {
-        mContentProvider = cp;
+        mContentProviderClient = cp;
         mContentResolver = null;
         mAccount = account;
     }
 
-    @Override
+    
+    public void setAccount(Account account) {
+        mAccount = account;
+    }
+
+    public Account getAccount() {
+        return mAccount;
+    }
+
+    public void setContentResolver(ContentResolver cr) {
+        mContentResolver = cr;
+    }
+
+    public ContentResolver getContentResolver() {
+        return mContentResolver;
+    }
+
+    public void setContentProviderClient(ContentProviderClient cp) {
+        mContentProviderClient = cp;
+    }
+
+    public ContentProviderClient getContentProviderClient() {
+        return mContentProviderClient;
+    }
+    
+
     public OCFile getFileByPath(String path) {
         Cursor c = getCursorForValue(ProviderTableMeta.FILE_PATH, path);
         OCFile file = null;
@@ -70,10 +98,13 @@ public class FileDataStorageManager implements DataStorageManager {
             file = createFileInstance(c);
         }
         c.close();
+        if (file == null && OCFile.ROOT_PATH.equals(path)) {
+            return createRootDir(); // root should always exist
+        }
         return file;
     }
 
-    @Override
+
     public OCFile getFileById(long id) {
         Cursor c = getCursorForValue(ProviderTableMeta._ID, String.valueOf(id));
         OCFile file = null;
@@ -84,41 +115,83 @@ public class FileDataStorageManager implements DataStorageManager {
         return file;
     }
 
-    @Override
+    public OCFile getFileByLocalPath(String path) {
+        Cursor c = getCursorForValue(ProviderTableMeta.FILE_STORAGE_PATH, path);
+        OCFile file = null;
+        if (c.moveToFirst()) {
+            file = createFileInstance(c);
+        }
+        c.close();
+        return file;
+    }
+
     public boolean fileExists(long id) {
         return fileExists(ProviderTableMeta._ID, String.valueOf(id));
     }
 
-    @Override
     public boolean fileExists(String path) {
         return fileExists(ProviderTableMeta.FILE_PATH, path);
     }
 
-    @Override
+    
+    public Vector<OCFile> getFolderContent(OCFile f) {
+        if (f != null && f.isFolder() && f.getFileId() != -1) {
+            return getFolderContent(f.getFileId());
+
+        } else {
+            return new Vector<OCFile>();
+        }
+    }
+    
+    
+    public Vector<OCFile> getFolderImages(OCFile folder) {
+        Vector<OCFile> ret = new Vector<OCFile>(); 
+        if (folder != null) {
+            // TODO better implementation, filtering in the access to database (if possible) instead of here 
+            Vector<OCFile> tmp = getFolderContent(folder);
+            OCFile current = null; 
+            for (int i=0; i<tmp.size(); i++) {
+                current = tmp.get(i);
+                if (current.isImage()) {
+                    ret.add(current);
+                }
+            }
+        }
+        return ret;
+    }
+
+    
     public boolean saveFile(OCFile file) {
         boolean overriden = false;
         ContentValues cv = new ContentValues();
         cv.put(ProviderTableMeta.FILE_MODIFIED, file.getModificationTimestamp());
+        cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, file.getModificationTimestampAtLastSyncForData());
         cv.put(ProviderTableMeta.FILE_CREATION, file.getCreationTimestamp());
         cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, file.getFileLength());
         cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, file.getMimetype());
         cv.put(ProviderTableMeta.FILE_NAME, file.getFileName());
-        if (file.getParentId() != 0)
+        //if (file.getParentId() != DataStorageManager.ROOT_PARENT_ID)
             cv.put(ProviderTableMeta.FILE_PARENT, file.getParentId());
         cv.put(ProviderTableMeta.FILE_PATH, file.getRemotePath());
-        if (!file.isDirectory())
+        if (!file.isFolder())
             cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getStoragePath());
         cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
-        cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, file.getLastSyncDate());
+        cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, file.getLastSyncDateForProperties());
+        cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, file.getLastSyncDateForData());
         cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, file.keepInSync() ? 1 : 0);
+        cv.put(ProviderTableMeta.FILE_ETAG, file.getEtag());
 
-        if (fileExists(file.getRemotePath())) {
-            OCFile oldFile = getFileByPath(file.getRemotePath());
-            if (file.getStoragePath() == null && oldFile.getStoragePath() != null)
-                file.setStoragePath(oldFile.getStoragePath());
-            if (!file.isDirectory());
-                cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getStoragePath());
-            file.setFileId(oldFile.getFileId());
+        boolean sameRemotePath = fileExists(file.getRemotePath());
+        if (sameRemotePath ||
+                fileExists(file.getFileId())        ) {           // for renamed files; no more delete and create
+
+            OCFile oldFile = null;
+            if (sameRemotePath) {
+                oldFile = getFileByPath(file.getRemotePath());
+                file.setFileId(oldFile.getFileId());
+            } else {
+                oldFile = getFileById(file.getFileId());
+            }
 
             overriden = true;
             if (getContentResolver() != null) {
@@ -127,11 +200,11 @@ public class FileDataStorageManager implements DataStorageManager {
                         new String[] { String.valueOf(file.getFileId()) });
             } else {
                 try {
-                    getContentProvider().update(ProviderTableMeta.CONTENT_URI,
+                    getContentProviderClient().update(ProviderTableMeta.CONTENT_URI,
                             cv, ProviderTableMeta._ID + "=?",
                             new String[] { String.valueOf(file.getFileId()) });
                 } catch (RemoteException e) {
-                    Log.e(TAG,
+                    Log_OC.e(TAG,
                             "Fail to insert insert file to database "
                                     + e.getMessage());
                 }
@@ -143,10 +216,10 @@ public class FileDataStorageManager implements DataStorageManager {
                         ProviderTableMeta.CONTENT_URI_FILE, cv);
             } else {
                 try {
-                    result_uri = getContentProvider().insert(
+                    result_uri = getContentProviderClient().insert(
                             ProviderTableMeta.CONTENT_URI_FILE, cv);
                 } catch (RemoteException e) {
-                    Log.e(TAG,
+                    Log_OC.e(TAG,
                             "Fail to insert insert file to database "
                                     + e.getMessage());
                 }
@@ -155,158 +228,400 @@ public class FileDataStorageManager implements DataStorageManager {
                 long new_id = Long.parseLong(result_uri.getPathSegments()
                         .get(1));
                 file.setFileId(new_id);
-            }
+            }            
         }
 
-        if (file.isDirectory() && file.needsUpdatingWhileSaving())
-            for (OCFile f : getDirectoryContent(file))
-                saveFile(f);
-
+        if (file.isFolder()) {
+            updateFolderSize(file.getFileId());
+            if (file.needsUpdatingWhileSaving()) {
+                for (OCFile f : getFolderContent(file))
+                    saveFile(f);
+            }
+        }
+        
         return overriden;
     }
 
 
-    @Override
-    public void saveFiles(List<OCFile> files) {
+    /**
+     * Inserts or updates the list of files contained in a given folder.
+     * 
+     * @param folder
+     * @param files
+     * @param removeNotUpdated
+     */
+    public void saveFolder(OCFile folder, Collection<OCFile> updatedFiles, Collection<OCFile> filesToRemove) {
         
-        Iterator<OCFile> filesIt = files.iterator();
-        ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>(files.size());
-        OCFile file = null;
+        Log_OC.d(TAG,  "Saving folder " + folder.getRemotePath() + " with " + updatedFiles.size() + " children and " + filesToRemove.size() + " files to remove");
 
-        // prepare operations to perform
-        while (filesIt.hasNext()) {
-            file = filesIt.next();
+        ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>(updatedFiles.size());
+        long folderSize = 0;
+
+        // prepare operations to insert or update files to save in the given folder
+        for (OCFile file : updatedFiles) {
             ContentValues cv = new ContentValues();
             cv.put(ProviderTableMeta.FILE_MODIFIED, file.getModificationTimestamp());
+            cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, file.getModificationTimestampAtLastSyncForData());
             cv.put(ProviderTableMeta.FILE_CREATION, file.getCreationTimestamp());
             cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, file.getFileLength());
+            folderSize += file.getFileLength();
             cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, file.getMimetype());
             cv.put(ProviderTableMeta.FILE_NAME, file.getFileName());
-            if (file.getParentId() != 0)
-                cv.put(ProviderTableMeta.FILE_PARENT, file.getParentId());
+            //cv.put(ProviderTableMeta.FILE_PARENT, file.getParentId());
+            cv.put(ProviderTableMeta.FILE_PARENT, folder.getFileId());
             cv.put(ProviderTableMeta.FILE_PATH, file.getRemotePath());
-            if (!file.isDirectory())
+            if (!file.isFolder()) {
                 cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getStoragePath());
+            }
             cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
-            cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, file.getLastSyncDate());
+            cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, file.getLastSyncDateForProperties());
+            cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, file.getLastSyncDateForData());
             cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, file.keepInSync() ? 1 : 0);
+            cv.put(ProviderTableMeta.FILE_ETAG, file.getEtag());
 
-            if (fileExists(file.getRemotePath())) {
-                OCFile tmpfile = getFileByPath(file.getRemotePath());
-                file.setStoragePath(tmpfile.getStoragePath());
-                if (!file.isDirectory());
-                    cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getStoragePath());
-                file.setFileId(tmpfile.getFileId());
-
+            boolean existsByPath = fileExists(file.getRemotePath());
+            if (existsByPath || fileExists(file.getFileId())) {
+                // updating an existing file
+                
+                /* CALLER IS THE RESPONSIBLE FOR GRANTING RIGHT UPDATE OF INFORMATION, NOT THIS METHOD.
+                 * 
+                 * HERE ONLY DATA CONSISTENCY SHOULD BE GRANTED 
+                 */
+                /*
+                OCFile oldFile = null;
+                if (existsByPath) {
+                    // grant same id
+                    oldFile = getFileByPath(file.getRemotePath());
+                    file.setFileId(oldFile.getFileId());
+                } else {
+                    oldFile = getFileById(file.getFileId());
+                }
+                
+                if (file.isFolder()) {
+                    // folders keep size information, since it's calculated
+                    file.setFileLength(oldFile.getFileLength());
+                    cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, oldFile.getFileLength());
+                    
+                } else if (file.getStoragePath() == null && oldFile.getStoragePath() != null) {
+                    // regular files keep access to local contents, although it's lost in the new OCFile
+                    file.setStoragePath(oldFile.getStoragePath());
+                    cv.put(ProviderTableMeta.FILE_STORAGE_PATH, oldFile.getStoragePath());
+                }
+                */
+                
                 operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
                         withValues(cv).
                         withSelection(  ProviderTableMeta._ID + "=?", 
-                                        new String[] { String.valueOf(file.getFileId()) })
-                        .build());
-                
+                                new String[] { String.valueOf(file.getFileId()) })
+                                .build());
+
             } else {
+                // adding a new file
                 operations.add(ContentProviderOperation.newInsert(ProviderTableMeta.CONTENT_URI).withValues(cv).build());
             }
         }
         
+        // prepare operations to remove files in the given folder
+        String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
+        String [] whereArgs = null;
+        for (OCFile file : filesToRemove) {
+            if (file.getParentId() == folder.getFileId()) {
+                whereArgs = new String[]{mAccount.name, file.getRemotePath()};
+                //Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, "" + file.getFileId());
+                if (file.isFolder()) {
+                    operations.add(ContentProviderOperation
+                                    .newDelete(ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_DIR, file.getFileId())).withSelection(where, whereArgs)
+                                        .build());
+                    // TODO remove local folder
+                } else {
+                    operations.add(ContentProviderOperation
+                                    .newDelete(ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, file.getFileId())).withSelection(where, whereArgs)
+                                        .build());
+                    if (file.isDown()) {
+                        new File(file.getStoragePath()).delete();
+                        // TODO move the deletion of local contents after success of deletions
+                    }
+                }
+            }
+        }
+        
+        // update metadata of folder
+        ContentValues cv = new ContentValues();
+        cv.put(ProviderTableMeta.FILE_MODIFIED, folder.getModificationTimestamp());
+        cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, folder.getModificationTimestampAtLastSyncForData());
+        cv.put(ProviderTableMeta.FILE_CREATION, folder.getCreationTimestamp());
+        cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, folderSize);
+        cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, folder.getMimetype());
+        cv.put(ProviderTableMeta.FILE_NAME, folder.getFileName());
+        cv.put(ProviderTableMeta.FILE_PARENT, folder.getParentId());
+        cv.put(ProviderTableMeta.FILE_PATH, folder.getRemotePath());
+        cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
+        cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, folder.getLastSyncDateForProperties());
+        cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, folder.getLastSyncDateForData());
+        cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, folder.keepInSync() ? 1 : 0);
+        cv.put(ProviderTableMeta.FILE_ETAG, folder.getEtag());
+        operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
+                withValues(cv).
+                withSelection(  ProviderTableMeta._ID + "=?", 
+                        new String[] { String.valueOf(folder.getFileId()) })
+                        .build());
+
         // apply operations in batch
         ContentProviderResult[] results = null;
+        Log_OC.d(TAG, "Sending " + operations.size() + " operations to FileContentProvider");
         try {
             if (getContentResolver() != null) {
                 results = getContentResolver().applyBatch(ProviderMeta.AUTHORITY_FILES, operations);
-            
+
             } else {
-                results = getContentProvider().applyBatch(operations);
+                results = getContentProviderClient().applyBatch(operations);
             }
-            
+
         } catch (OperationApplicationException e) {
-            Log.e(TAG, "Fail to update/insert list of files to database " + e.getMessage());
-            
+            Log_OC.e(TAG, "Exception in batch of operations " + e.getMessage());
+
         } catch (RemoteException e) {
-            Log.e(TAG, "Fail to update/insert list of files to database " + e.getMessage());
+            Log_OC.e(TAG, "Exception in batch of operations  " + e.getMessage());
         }
-        
+
         // update new id in file objects for insertions
         if (results != null) {
             long newId;
+            Iterator<OCFile> filesIt = updatedFiles.iterator();
+            OCFile file = null;
             for (int i=0; i<results.length; i++) {
+                if (filesIt.hasNext()) {
+                    file = filesIt.next();
+                } else {
+                    file = null;
+                }
                 if (results[i].uri != null) {
                     newId = Long.parseLong(results[i].uri.getPathSegments().get(1));
-                    files.get(i).setFileId(newId);
-                    //Log.v(TAG, "Found and added id in insertion for " + files.get(i).getRemotePath());
+                    //updatedFiles.get(i).setFileId(newId);
+                    if (file != null) {
+                        file.setFileId(newId);
+                    }
                 }
             }
         }
+        
+    }
 
-        for (OCFile aFile : files) {
-            if (aFile.isDirectory() && aFile.needsUpdatingWhileSaving())
-                saveFiles(getDirectoryContent(aFile));
-        }
 
+    /**
+     * 
+     * @param id
+     */
+    public void updateFolderSize(long id) {
+        if (getContentResolver() != null) {
+            getContentResolver().update(ProviderTableMeta.CONTENT_URI_DIR, null,
+                    ProviderTableMeta._ID + "=?",
+                    new String[] { String.valueOf(id) });
+        } else {
+            try {
+                getContentProviderClient().update(ProviderTableMeta.CONTENT_URI_DIR, null,
+                    ProviderTableMeta._ID + "=?",
+                    new String[] { String.valueOf(id) });
+                
+            } catch (RemoteException e) {
+                Log_OC.e(TAG, "Exception in update of folder size through compatibility patch " + e.getMessage());
+            }
+        }
     }
     
-    public void setAccount(Account account) {
-        mAccount = account;
-    }
-
-    public Account getAccount() {
-        return mAccount;
-    }
 
-    public void setContentResolver(ContentResolver cr) {
-        mContentResolver = cr;
+    public void removeFile(OCFile file, boolean removeDBData, boolean removeLocalCopy) {
+        if (file != null) {
+            if (file.isFolder()) {
+                removeFolder(file, removeDBData, removeLocalCopy);
+                
+            } else {
+                if (removeDBData) {
+                    //Uri file_uri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, ""+file.getFileId());
+                    Uri file_uri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, file.getFileId());
+                    String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
+                    String [] whereArgs = new String[]{mAccount.name, file.getRemotePath()};
+                    if (getContentProviderClient() != null) {
+                        try {
+                            getContentProviderClient().delete(file_uri, where, whereArgs);
+                        } catch (RemoteException e) {
+                            e.printStackTrace();
+                        }
+                    } else {
+                        getContentResolver().delete(file_uri, where, whereArgs);
+                    }
+                }
+                if (removeLocalCopy && file.isDown()) {
+                    boolean success = new File(file.getStoragePath()).delete();
+                    if (!removeDBData && success) {
+                        // maybe unnecessary, but should be checked TODO remove if unnecessary
+                        file.setStoragePath(null);
+                        saveFile(file);
+                    }
+                }
+            }
+        }
     }
+    
 
-    public ContentResolver getContentResolver() {
-        return mContentResolver;
+    public void removeFolder(OCFile folder, boolean removeDBData, boolean removeLocalContent) {
+        if (folder != null && folder.isFolder()) {
+            if (removeDBData &&  folder.getFileId() != -1) {
+                removeFolderInDb(folder);
+            }
+            if (removeLocalContent) {
+                File localFolder = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, folder));
+                removeLocalFolder(localFolder);
+            }
+        }
     }
 
-    public void setContentProvider(ContentProviderClient cp) {
-        mContentProvider = cp;
+    private void removeFolderInDb(OCFile folder) {
+        Uri folder_uri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_DIR, ""+ folder.getFileId());   // URI for recursive deletion
+        String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
+        String [] whereArgs = new String[]{mAccount.name, folder.getRemotePath()};
+        if (getContentProviderClient() != null) {
+            try {
+                getContentProviderClient().delete(folder_uri, where, whereArgs);
+            } catch (RemoteException e) {
+                e.printStackTrace();
+            }
+        } else {
+            getContentResolver().delete(folder_uri, where, whereArgs); 
+        }
     }
 
-    public ContentProviderClient getContentProvider() {
-        return mContentProvider;
+    private void removeLocalFolder(File folder) {
+        if (folder.exists()) {
+            File[] files = folder.listFiles();
+            if (files != null) {
+                for (File file : files) {
+                    if (file.isDirectory()) {
+                        removeLocalFolder(file);
+                    } else {
+                        file.delete();
+                    }
+                }
+            }
+            folder.delete();
+        }
     }
 
-    public Vector<OCFile> getDirectoryContent(OCFile f) {
-        if (f != null && f.isDirectory() && f.getFileId() != -1) {
-            Vector<OCFile> ret = new Vector<OCFile>();
-
-            Uri req_uri = Uri.withAppendedPath(
-                    ProviderTableMeta.CONTENT_URI_DIR,
-                    String.valueOf(f.getFileId()));
+    /**
+     * Updates database for a folder that was moved to a different location.
+     * 
+     * TODO explore better (faster) implementations
+     * TODO throw exceptions up !
+     */
+    public void moveFolder(OCFile folder, String newPath) {
+        // TODO check newPath
+
+        if (folder != null && folder.isFolder() && folder.fileExists() && !OCFile.ROOT_PATH.equals(folder.getFileName())) {
+            /// 1. get all the descendants of 'dir' in a single QUERY (including 'dir')
             Cursor c = null;
-
-            if (getContentProvider() != null) {
+            if (getContentProviderClient() != null) {
                 try {
-                    c = getContentProvider().query(req_uri, null,
-                            ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
-                            new String[] { mAccount.name }, null);
+                    c = getContentProviderClient().query(ProviderTableMeta.CONTENT_URI, 
+                            null,
+                            ProviderTableMeta.FILE_ACCOUNT_OWNER + "=? AND " + ProviderTableMeta.FILE_PATH + " LIKE ? ",
+                            new String[] { mAccount.name, folder.getRemotePath() + "%"  }, ProviderTableMeta.FILE_PATH + " ASC ");
                 } catch (RemoteException e) {
-                    Log.e(TAG, e.getMessage());
-                    return ret;
+                    Log_OC.e(TAG, e.getMessage());
                 }
             } else {
-                c = getContentResolver().query(req_uri, null,
-                        ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
-                        new String[] { mAccount.name }, null);
+                c = getContentResolver().query(ProviderTableMeta.CONTENT_URI, 
+                        null,
+                        ProviderTableMeta.FILE_ACCOUNT_OWNER + "=? AND " + ProviderTableMeta.FILE_PATH + " LIKE ? ",
+                        new String[] { mAccount.name, folder.getRemotePath() + "%"  }, ProviderTableMeta.FILE_PATH + " ASC ");
             }
 
+            /// 2. prepare a batch of update operations to change all the descendants
+            ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>(c.getCount());
+            int lengthOfOldPath = folder.getRemotePath().length();
+            String defaultSavePath = FileStorageUtils.getSavePath(mAccount.name);
+            int lengthOfOldStoragePath = defaultSavePath.length() + lengthOfOldPath;
             if (c.moveToFirst()) {
                 do {
+                    ContentValues cv = new ContentValues(); // don't take the constructor out of the loop and clear the object
                     OCFile child = createFileInstance(c);
-                    ret.add(child);
+                    cv.put(ProviderTableMeta.FILE_PATH, newPath + child.getRemotePath().substring(lengthOfOldPath));
+                    if (child.getStoragePath() != null && child.getStoragePath().startsWith(defaultSavePath)) {
+                        cv.put(ProviderTableMeta.FILE_STORAGE_PATH, defaultSavePath + newPath + child.getStoragePath().substring(lengthOfOldStoragePath));
+                    }
+                    operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
+                            withValues(cv).
+                            withSelection(  ProviderTableMeta._ID + "=?", 
+                                    new String[] { String.valueOf(child.getFileId()) })
+                                    .build());
                 } while (c.moveToNext());
             }
-
             c.close();
-            
-            Collections.sort(ret);
-            
-            return ret;
+
+            /// 3. apply updates in batch
+            try {
+                if (getContentResolver() != null) {
+                    getContentResolver().applyBatch(ProviderMeta.AUTHORITY_FILES, operations);
+
+                } else {
+                    getContentProviderClient().applyBatch(operations);
+                }
+
+            } catch (OperationApplicationException e) {
+                Log_OC.e(TAG, "Fail to update descendants of " + folder.getFileId() + " in database", e);
+
+            } catch (RemoteException e) {
+                Log_OC.e(TAG, "Fail to update desendants of " + folder.getFileId() + " in database", e);
+            }
+
+        }
+    }
+
+    
+    private Vector<OCFile> getFolderContent(long parentId) {
+
+        Vector<OCFile> ret = new Vector<OCFile>();
+
+        Uri req_uri = Uri.withAppendedPath(
+                ProviderTableMeta.CONTENT_URI_DIR,
+                String.valueOf(parentId));
+        Cursor c = null;
+
+        if (getContentProviderClient() != null) {
+            try {
+                c = getContentProviderClient().query(req_uri, null, 
+                        ProviderTableMeta.FILE_PARENT + "=?" ,
+                        new String[] { String.valueOf(parentId)}, null);
+            } catch (RemoteException e) {
+                Log_OC.e(TAG, e.getMessage());
+                return ret;
+            }
+        } else {
+            c = getContentResolver().query(req_uri, null, 
+                    ProviderTableMeta.FILE_PARENT + "=?" ,
+                    new String[] { String.valueOf(parentId)}, null);
         }
-        return null;
+
+        if (c.moveToFirst()) {
+            do {
+                OCFile child = createFileInstance(c);
+                ret.add(child);
+            } while (c.moveToNext());
+        }
+
+        c.close();
+
+        Collections.sort(ret);
+
+        return ret;
+    }
+    
+    
+    private OCFile createRootDir() {
+        OCFile file = new OCFile(OCFile.ROOT_PATH);
+        file.setMimetype("DIR");
+        file.setParentId(FileDataStorageManager.ROOT_PARENT_ID);
+        saveFile(file);
+        return file;
     }
 
     private boolean fileExists(String cmp_key, String value) {
@@ -318,17 +633,17 @@ public class FileDataStorageManager implements DataStorageManager {
                             cmp_key + "=? AND "
                                     + ProviderTableMeta.FILE_ACCOUNT_OWNER
                                     + "=?",
-                            new String[] { value, mAccount.name }, null);
+                                    new String[] { value, mAccount.name }, null);
         } else {
             try {
-                c = getContentProvider().query(
+                c = getContentProviderClient().query(
                         ProviderTableMeta.CONTENT_URI,
                         null,
                         cmp_key + "=? AND "
                                 + ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
-                        new String[] { value, mAccount.name }, null);
+                                new String[] { value, mAccount.name }, null);
             } catch (RemoteException e) {
-                Log.e(TAG,
+                Log_OC.e(TAG,
                         "Couldn't determine file existance, assuming non existance: "
                                 + e.getMessage());
                 return false;
@@ -348,17 +663,17 @@ public class FileDataStorageManager implements DataStorageManager {
                             key + "=? AND "
                                     + ProviderTableMeta.FILE_ACCOUNT_OWNER
                                     + "=?",
-                            new String[] { value, mAccount.name }, null);
+                                    new String[] { value, mAccount.name }, null);
         } else {
             try {
-                c = getContentProvider().query(
+                c = getContentProviderClient().query(
                         ProviderTableMeta.CONTENT_URI,
                         null,
                         key + "=? AND " + ProviderTableMeta.FILE_ACCOUNT_OWNER
-                                + "=?", new String[] { value, mAccount.name },
+                        + "=?", new String[] { value, mAccount.name },
                         null);
             } catch (RemoteException e) {
-                Log.e(TAG, "Could not get file details: " + e.getMessage());
+                Log_OC.e(TAG, "Could not get file details: " + e.getMessage());
                 c = null;
             }
         }
@@ -375,14 +690,16 @@ public class FileDataStorageManager implements DataStorageManager {
                     .getColumnIndex(ProviderTableMeta.FILE_PARENT)));
             file.setMimetype(c.getString(c
                     .getColumnIndex(ProviderTableMeta.FILE_CONTENT_TYPE)));
-            if (!file.isDirectory()) {
+            if (!file.isFolder()) {
                 file.setStoragePath(c.getString(c
                         .getColumnIndex(ProviderTableMeta.FILE_STORAGE_PATH)));
                 if (file.getStoragePath() == null) {
-                    // try to find existing file and bind it with current account
-                    File f = new File(FileDownloader.getSavePath(mAccount.name) + file.getRemotePath());
-                    if (f.exists())
+                    // try to find existing file and bind it with current account; - with the current update of SynchronizeFolderOperation, this won't be necessary anymore after a full synchronization of the account
+                    File f = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, file));
+                    if (f.exists()) {
                         file.setStoragePath(f.getAbsolutePath());
+                        file.setLastSyncDateForData(f.lastModified());
+                    }
                 }
             }
             file.setFileLength(c.getLong(c
@@ -391,32 +708,61 @@ public class FileDataStorageManager implements DataStorageManager {
                     .getColumnIndex(ProviderTableMeta.FILE_CREATION)));
             file.setModificationTimestamp(c.getLong(c
                     .getColumnIndex(ProviderTableMeta.FILE_MODIFIED)));
-            file.setLastSyncDate(c.getLong(c
+            file.setModificationTimestampAtLastSyncForData(c.getLong(c
+                    .getColumnIndex(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA)));
+            file.setLastSyncDateForProperties(c.getLong(c
                     .getColumnIndex(ProviderTableMeta.FILE_LAST_SYNC_DATE)));
+            file.setLastSyncDateForData(c.getLong(c.
+                    getColumnIndex(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA)));
             file.setKeepInSync(c.getInt(
-                                c.getColumnIndex(ProviderTableMeta.FILE_KEEP_IN_SYNC)) == 1 ? true : false);
+                    c.getColumnIndex(ProviderTableMeta.FILE_KEEP_IN_SYNC)) == 1 ? true : false);
+            file.setEtag(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_ETAG)));
+                    
         }
         return file;
     }
-    
-    public void removeFile(OCFile file, boolean removeLocalCopy) {
-        Uri file_uri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, ""+file.getFileId());
-        if (getContentProvider() != null) {
+
+    /*
+     * Update the size value of an OCFile in DB
+     *
+    private int updateSize(long id, long size) {
+        ContentValues cv = new ContentValues();
+        cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, size);
+        int result = -1;
+        if (getContentResolver() != null) {
+             result = getContentResolver().update(ProviderTableMeta.CONTENT_URI, cv, ProviderTableMeta._ID + "=?", 
+                     new String[] { String.valueOf(id) });
+        } else {
             try {
-                getContentProvider().delete(file_uri,
-                                            ProviderTableMeta.FILE_ACCOUNT_OWNER+"=?",
-                                            new String[]{mAccount.name});
+                result = getContentProviderClient().update(ProviderTableMeta.CONTENT_URI, cv, ProviderTableMeta._ID + "=?", 
+                        new String[] { String.valueOf(id) });
             } catch (RemoteException e) {
-                e.printStackTrace();
+                Log_OC.e(TAG,"Fail to update size column into database " + e.getMessage());
             }
-        } else {
-            getContentResolver().delete(file_uri,
-                                        ProviderTableMeta.FILE_ACCOUNT_OWNER+"=?",
-                                        new String[]{mAccount.name});
-        }
-        if (file.isDown() && removeLocalCopy) {
-            new File(file.getStoragePath()).delete();
         }
+        return result;
     }
+    */
+
+    /* 
+     * Update the size of a subtree of folder from a file to the root
+     * @param parentId: parent of the file
+     *
+    private void updateSizesToTheRoot(long parentId) {
+        
+        OCFile file; 
 
+        while (parentId != FileDataStorageManager.ROOT_PARENT_ID) {
+            
+            // Update the size of the parent
+            updateFolderSize(parentId);
+            
+            // search the next parent
+            file = getFileById(parentId);            
+            parentId = file.getParentId();
+            
+        }              
+    }
+    */
+    
 }