public override bool UpdateFileMetadata(FileMetaData oldMetadata, FileMetaData newMetadata)
{
//Sort list of metadata items before search using linq
oldMetadata.MetaDataItems.ToList().Sort(new FileMetaDataItemComparer());
newMetadata.MetaDataItems.ToList().Sort(new FileMetaDataItemComparer());
var mdComparer = new FileMetaDataComparer(oldMetadata, newMetadata);
var db = new SQLiteAccess(Path.Combine(this.StoragePath, Configuration.DATABASE_NAME), false);
using (SqliteConnection con = db.NewSQLiteConnection())
{
if (con == null)
{
throw new DatabaseException(String.Format(m_ResourceManager.GetString("err_somethingNotFound"), Path.Combine(this.StoragePath, Configuration.DATABASE_NAME)));
}
var transaction = (SqliteTransaction)con.BeginTransaction();
try
{
this.Add(mdComparer.RightOnly.ToList(), con);
this.Delete(mdComparer.LeftOnly.ToList(), con);
this.Update(mdComparer.BothModified.ToList(), con);
transaction.Commit();
}
catch (Exception)
{
transaction.Rollback();
return(false);
}
}
return(true);
}
private void GeneratePreview(FileMetaData currentMetadata, FileMetaData oldCurrentMetadata)
{
//By comparing current metadata and the old metadata from previous sync of a sync folder
//we could know the dirty items of the folder.
var comparerCurrent = new FileMetaDataComparer(currentMetadata, oldCurrentMetadata);
var dirtyItemsInCurrent = new List <FileMetaDataItem>();
dirtyItemsInCurrent.AddRange(comparerCurrent.LeftOnly);
dirtyItemsInCurrent.AddRange(comparerCurrent.BothModified);
//Compare the _actions and dirty items in current folder. Collision is detected when
//2 items in 2 collection have same relative path but different hashes.
IEnumerable <SyncAction> conflictItems = from action in _actions
join dirtyInCurrent in dirtyItemsInCurrent on
action.RelativeFilePath equals dirtyInCurrent.RelativePath
where !action.FileHash.Equals(dirtyInCurrent.HashCode)
select action;
foreach (SyncAction action in conflictItems)
{
action.ConflictResolution = ConflictResolution.DUPLICATE_RENAME;
}
IEnumerable <SyncAction> itemsToDelete = from action in _actions
where action.ChangeType == ChangeType.DELETED
select action;
IEnumerable <SyncAction> itemsToCopyOver = from action in _actions
where action.ChangeType == ChangeType.NEWLY_CREATED &&
!conflictItems.Contains(action)
select action;
IEnumerable <SyncAction> itemsToRename = from action in _actions
where action.ChangeType == ChangeType.RENAMED &&
!conflictItems.Contains(action)
select action;
ConflictItems = conflictItems.ToList();
ItemsToCopyOver = itemsToCopyOver.ToList();
ItemsToDelete = itemsToDelete.ToList();
ItemsToRename = itemsToRename.ToList();
}
/// <summary>
/// Generates SyncActions to be executed by other PC by comparing the metadata
/// of current SyncSource and the metadata of other PC.
/// </summary>
private IList <SyncAction> GenerateActions()
{
//Metadata mdCurrent = UpdateSyncSourceMetadata();
//Metadata mdOther = mdProvider.Load(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
FileMetaData mdCurrent = MetaDataProvider.GenerateFileMetadata(
_job.SyncSource.Path, _job.SyncSource.ID, false, false);
FileMetaData mdOldCurrent = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_EQUALS);
mdProvider.UpdateFileMetadata(mdOldCurrent, mdCurrent);
FileMetaData mdOther = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
//generate list of sync actions by comparing 2 metadata
var differences = new FileMetaDataComparer(mdCurrent, mdOther);
return(actProvider.Generate(mdCurrent.SourceId,
differences.LeftOnly,
differences.RightOnly,
differences.BothModified));
}
private void GeneratePreview(FileMetaData currentMetadata, FileMetaData oldCurrentMetadata)
{
//By comparing current metadata and the old metadata from previous sync of a sync folder
//we could know the dirty items of the folder.
var comparerCurrent = new FileMetaDataComparer(currentMetadata, oldCurrentMetadata);
var dirtyItemsInCurrent = new List<FileMetaDataItem>();
dirtyItemsInCurrent.AddRange(comparerCurrent.LeftOnly);
dirtyItemsInCurrent.AddRange(comparerCurrent.BothModified);
//Compare the _actions and dirty items in current folder. Collision is detected when
//2 items in 2 collection have same relative path but different hashes.
IEnumerable<SyncAction> conflictItems = from action in _actions
join dirtyInCurrent in dirtyItemsInCurrent on
action.RelativeFilePath equals dirtyInCurrent.RelativePath
where !action.FileHash.Equals(dirtyInCurrent.HashCode)
select action;
foreach (SyncAction action in conflictItems)
action.ConflictResolution = ConflictResolution.DUPLICATE_RENAME;
IEnumerable<SyncAction> itemsToDelete = from action in _actions
where action.ChangeType == ChangeType.DELETED
select action;
IEnumerable<SyncAction> itemsToCopyOver = from action in _actions
where action.ChangeType == ChangeType.NEWLY_CREATED
&& !conflictItems.Contains(action)
select action;
IEnumerable<SyncAction> itemsToRename = from action in _actions
where action.ChangeType == ChangeType.RENAMED
&& !conflictItems.Contains(action)
select action;
ConflictItems = conflictItems.ToList();
ItemsToCopyOver = itemsToCopyOver.ToList();
ItemsToDelete = itemsToDelete.ToList();
ItemsToRename = itemsToRename.ToList();
}
/// <summary>
/// Generates SyncActions to be executed by other PC by comparing the metadata
/// of current SyncSource and the metadata of other PC.
/// </summary>
private IList<SyncAction> GenerateActions()
{
//Metadata mdCurrent = UpdateSyncSourceMetadata();
//Metadata mdOther = mdProvider.Load(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
FileMetaData mdCurrent = MetaDataProvider.GenerateFileMetadata(
_job.SyncSource.Path, _job.SyncSource.ID, false, false);
FileMetaData mdOldCurrent = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_EQUALS);
mdProvider.UpdateFileMetadata(mdOldCurrent, mdCurrent);
FileMetaData mdOther = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
//generate list of sync actions by comparing 2 metadata
var differences = new FileMetaDataComparer(mdCurrent, mdOther);
return actProvider.Generate(mdCurrent.SourceId,
differences.LeftOnly,
differences.RightOnly,
differences.BothModified);
}
public override bool UpdateFileMetadata(FileMetaData oldMetadata, FileMetaData newMetadata)
{
//Sort list of metadata items before search using linq
oldMetadata.MetaDataItems.ToList().Sort(new FileMetaDataItemComparer());
newMetadata.MetaDataItems.ToList().Sort(new FileMetaDataItemComparer());
var mdComparer = new FileMetaDataComparer(oldMetadata, newMetadata);
var db = new SQLiteAccess(Path.Combine(this.StoragePath, Configuration.DATABASE_NAME),false);
using (SqliteConnection con = db.NewSQLiteConnection())
{
if (con == null)
throw new DatabaseException(String.Format(m_ResourceManager.GetString("err_somethingNotFound"), Path.Combine(this.StoragePath, Configuration.DATABASE_NAME)));
var transaction = (SqliteTransaction)con.BeginTransaction();
try
{
this.Add(mdComparer.RightOnly.ToList(), con);
this.Delete(mdComparer.LeftOnly.ToList(), con);
this.Update(mdComparer.BothModified.ToList(), con);
transaction.Commit();
}
catch (Exception)
{
transaction.Rollback();
return false;
}
}
return true;
}
