/// <summary>
/// Creates a new media object.
/// </summary>
/// <param name="media">The memory stream containing the media.</param>
/// <param name="type">The media type.</param>
/// <param name="rpu">A delegate of type <see cref="StatusMessageReportProgress"/> used to send messages back to the calling object.</param>
/// <param name="caller">The calling object.</param>
/// <returns>The id for the new media object.</returns>
/// <remarks>Documented by Dev03, 2008-08-05</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public int CreateMedia(Stream media, EMedia type, StatusMessageReportProgress rpu, object caller)
{
using (NpgsqlConnection conn = PostgreSQLConn.CreateConnection(Parent.CurrentUser))
{
NpgsqlTransaction tran = conn.BeginTransaction();
LargeObjectManager lbm = new LargeObjectManager(conn);
int noid = lbm.Create(LargeObjectManager.READWRITE);
LargeObject largeObject = lbm.Open(noid, LargeObjectManager.READWRITE);
byte[] buffer = new byte[media.Length];
media.Read(buffer, 0, (int)media.Length);
BufferToLargeObject(buffer, largeObject, rpu, caller);
largeObject.Close();
int newId = 0;
using (NpgsqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "INSERT INTO \"MediaContent\" (data, media_type) VALUES (:data, :type) RETURNING id;";
cmd.Parameters.Add("data", noid);
cmd.Parameters.Add("type", type.ToString());
newId = Convert.ToInt32(PostgreSQLConn.ExecuteScalar(cmd, Parent.CurrentUser));
}
tran.Commit();
return(newId);
}
}
/// <summary>
/// Writes the content of a buffer into a LargeObject.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="largeObject">The large object.</param>
/// <param name="rpu">The rpu.</param>
/// <param name="caller">The calling object.</param>
/// <remarks>Documented by Dev02, 2008-08-08</remarks>
private void BufferToLargeObject(byte[] buffer, LargeObject largeObject, StatusMessageReportProgress rpu, object caller)
{
largeObject.Seek(0);
int offset = 0;
int size = buffer.Length;
StatusMessageEventArgs args = new StatusMessageEventArgs(StatusMessageType.CreateMediaProgress, buffer.Length);
while (offset < size)
{
largeObject.Write(buffer, offset, Math.Min(chunkSize, size - offset));
offset += chunkSize;
args.Progress = offset;
if (rpu != null)
{
rpu(args, caller);
}
}
}
/// <summary>
/// Writes the content of a buffer into a LargeObject.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="largeObject">The large object.</param>
/// <param name="rpu">The rpu.</param>
/// <param name="caller">The calling object.</param>
/// <remarks>Documented by Dev02, 2008-08-08</remarks>
private void BufferToLargeObject(byte[] buffer, LargeObject largeObject, StatusMessageReportProgress rpu, object caller)
{
largeObject.Seek(0);
int offset = 0;
int size = buffer.Length;
StatusMessageEventArgs args = new StatusMessageEventArgs(StatusMessageType.CreateMediaProgress, buffer.Length);
while (offset < size)
{
largeObject.Write(buffer, offset, Math.Min(chunkSize, size - offset));
offset += chunkSize;
args.Progress = offset;
if (rpu != null)
rpu(args, caller);
}
}
/// <summary>
/// Creates a new media object.
/// </summary>
/// <param name="media">The memory stream containing the media.</param>
/// <param name="type">The media type.</param>
/// <param name="rpu">A delegate of type <see cref="StatusMessageReportProgress"/> used to send messages back to the calling object.</param>
/// <param name="caller">The calling object.</param>
/// <returns>The id for the new media object.</returns>
/// <remarks>Documented by Dev03, 2008-08-05</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public int CreateMedia(Stream media, EMedia type, StatusMessageReportProgress rpu, object caller)
{
using (NpgsqlConnection conn = PostgreSQLConn.CreateConnection(Parent.CurrentUser))
{
NpgsqlTransaction tran = conn.BeginTransaction();
LargeObjectManager lbm = new LargeObjectManager(conn);
int noid = lbm.Create(LargeObjectManager.READWRITE);
LargeObject largeObject = lbm.Open(noid, LargeObjectManager.READWRITE);
byte[] buffer = new byte[media.Length];
media.Read(buffer, 0, (int)media.Length);
BufferToLargeObject(buffer, largeObject, rpu, caller);
largeObject.Close();
int newId = 0;
using (NpgsqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "INSERT INTO \"MediaContent\" (data, media_type) VALUES (:data, :type) RETURNING id;";
cmd.Parameters.Add("data", noid);
cmd.Parameters.Add("type", type.ToString());
newId = Convert.ToInt32(PostgreSQLConn.ExecuteScalar(cmd, Parent.CurrentUser));
}
tran.Commit();
return newId;
}
}
/// <summary>
/// Creates a new media object.
/// </summary>
/// <param name="caller">The calling object.</param>
/// <param name="rpu">A delegate of the type StatusMessageReportProgress.</param>
/// <param name="type">The type.</param>
/// <param name="path">The path.</param>
/// <param name="isActive">if set to <c>true</c> [is active].</param>
/// <param name="isDefault">if set to <c>true</c> [is default].</param>
/// <param name="isExample">if set to <c>true</c> [is example].</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-11</remarks>
internal IMedia CreateNewMediaObject(object caller, StatusMessageReportProgress rpu, EMedia type, string path, bool isActive, bool isDefault, bool isExample)
{
IMedia media = null;
Uri uri;
if (!this.HasPermission(PermissionTypes.CanModifyMedia))
{
throw new PermissionException();
}
if (path == null)
{
throw new ArgumentNullException("Null value not allowed for media file path!");
}
try
{
if (File.Exists(Path.Combine(Environment.CurrentDirectory, path))) //to allow relative paths
{
path = Path.Combine(Environment.CurrentDirectory, path);
}
uri = new Uri(path);
}
catch (UriFormatException exception)
{
throw new FileNotFoundException("Uri format is invalid.", exception);
}
if (uri.Scheme == Uri.UriSchemeFile && uri.IsFile) //we got a new file
{
if (File.Exists(path))
{
int newid;
using (FileStream stream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read))
newid = mediaconnector.CreateMedia(stream, type, rpu, caller);
media = DbMedia.CreateDisconnectedCardMedia(newid, type, isDefault, isExample, parent);
Helper.UpdateMediaProperties(path, newid, mediaconnector);
}
else
{
throw new FileNotFoundException("Media file could not be found.", path);
}
}
else if (uri.Scheme == "http" && uri.IsLoopback) //we got a http reference => file is already in db
{
if (DbMediaServer.DbMediaServer.Instance(parent).IsYours(uri))
{
int mediaId = DbMediaServer.DbMediaServer.GetMediaID(uri.AbsolutePath);
media = DbMedia.CreateDisconnectedCardMedia(mediaId, type, isDefault, isExample, parent);
rpu(new StatusMessageEventArgs(StatusMessageType.CreateMediaProgress, 100, 100), caller);
}
else
{
DbMediaServer.DbMediaServer server = DbMediaServer.DbMediaServer.Instance(uri);
int newid = mediaconnector.CreateMedia(GetMediaConnector(server.Parent).GetMediaStream(DbMediaServer.DbMediaServer.GetMediaID(uri.AbsolutePath)), type, rpu, caller);
media = DbMedia.CreateDisconnectedCardMedia(newid, type, isDefault, isExample, parent);
Helper.UpdateMediaProperties(path, newid, mediaconnector);
}
}
return(media);
}
/// <summary>
/// Creates a new media object.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="path">The path.</param>
/// <param name="isActive">if set to <c>true</c> [is active].</param>
/// <param name="isDefault">if set to <c>true</c> [is default].</param>
/// <param name="isExample">if set to <c>true</c> [is example].</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-11</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public IMedia CreateMedia(EMedia type, string path, bool isActive, bool isDefault, bool isExample)
{
StatusMessageReportProgress rpu = new StatusMessageReportProgress(ReportProgressUpdate);
return(CreateNewMediaObject(this, rpu, type, path, isActive, isDefault, isExample));
}
/// <summary>
/// Creates the media.
/// </summary>
/// <param name="type">The type of the media file.</param>
/// <param name="path">The path to the media file.</param>
/// <param name="isActive">if set to <c>true</c> [is active].</param>
/// <param name="isDefault">if set to <c>true</c> [is default].</param>
/// <param name="isExample">if set to <c>true</c> [is example].</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2007-09-03</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public IMedia CreateMedia(EMedia type, string path, bool isActive, bool isDefault, bool isExample)
{
StatusMessageReportProgress rpu = new StatusMessageReportProgress(ReportProgressUpdate);
return (parent.GetParentDictionary() as DbDictionary).CreateNewMediaObject(this, rpu, type, path, isActive, isDefault, isExample);
}
/// <summary>
/// Creates a new media object.
/// </summary>
/// <param name="caller">The calling object.</param>
/// <param name="rpu">A delegate of the type StatusMessageReportProgress.</param>
/// <param name="type">The type.</param>
/// <param name="path">The path.</param>
/// <param name="isActive">if set to <c>true</c> [is active].</param>
/// <param name="isDefault">if set to <c>true</c> [is default].</param>
/// <param name="isExample">if set to <c>true</c> [is example].</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-11</remarks>
internal IMedia CreateNewMediaObject(object caller, StatusMessageReportProgress rpu, EMedia type, string path, bool isActive, bool isDefault, bool isExample)
{
IMedia media = null;
Uri uri;
if (!this.HasPermission(PermissionTypes.CanModifyMedia))
throw new PermissionException();
if (path == null)
throw new ArgumentNullException("Null value not allowed for media file path!");
try
{
if (File.Exists(Path.Combine(Environment.CurrentDirectory, path))) //to allow relative paths
path = Path.Combine(Environment.CurrentDirectory, path);
uri = new Uri(path);
}
catch (UriFormatException exception)
{
throw new FileNotFoundException("Uri format is invalid.", exception);
}
if (uri.Scheme == Uri.UriSchemeFile && uri.IsFile) //we got a new file
{
if (File.Exists(path))
{
int newid;
using (FileStream stream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read))
newid = mediaconnector.CreateMedia(stream, type, rpu, caller);
media = DbMedia.CreateDisconnectedCardMedia(newid, type, isDefault, isExample, parent);
Helper.UpdateMediaProperties(path, newid, mediaconnector);
}
else
throw new FileNotFoundException("Media file could not be found.", path);
}
else if (uri.Scheme == "http" && uri.IsLoopback) //we got a http reference => file is already in db
{
if (DbMediaServer.DbMediaServer.Instance(parent).IsYours(uri))
{
int mediaId = DbMediaServer.DbMediaServer.GetMediaID(uri.AbsolutePath);
media = DbMedia.CreateDisconnectedCardMedia(mediaId, type, isDefault, isExample, parent);
rpu(new StatusMessageEventArgs(StatusMessageType.CreateMediaProgress, 100, 100), caller);
}
else
{
DbMediaServer.DbMediaServer server = DbMediaServer.DbMediaServer.Instance(uri);
int newid = mediaconnector.CreateMedia(GetMediaConnector(server.Parent).GetMediaStream(DbMediaServer.DbMediaServer.GetMediaID(uri.AbsolutePath)), type, rpu, caller);
media = DbMedia.CreateDisconnectedCardMedia(newid, type, isDefault, isExample, parent);
Helper.UpdateMediaProperties(path, newid, mediaconnector);
}
}
return media;
}
