/// <summary>
/// Write aggregated data to a provided stream.
/// </summary>
/// <param name="destination">Destination stream.</param>
/// <returns>True if data was successfully serialized.</returns>
public bool WriteToStream(Stream destination)
{
if (this.data == null || (this.data.Count == 0 && !this.data.HasUnmergedData))
{
return(false);
}
this.data.Merge();
using (var writer = new PersistedDataWriter(destination, this.DimensionSet, this.memoryStreamManager))
{
writer.WriteData(this.Name, this.StartTime.ToUniversalTime(), this.EndTime.ToUniversalTime(),
(uint)this.data.Count, this.Sources, this.data);
}
return(true);
}
public bool Serialize(string name, Stream destination)
{
if (!this.Sealed)
{
return(false);
}
// If we already have data on the disk stream if from there instead of paying re-serialization cost.
// We prefer to do this even if the data is actually loaded.
if (this.Filename != null && !this.Dirty)
{
try
{
var bytes = new byte[8192];
using (var fs = new FileStream(this.Filename, FileMode.Open, FileAccess.Read))
{
int readBytes;
while ((readBytes = fs.Read(bytes, 0, bytes.Length)) != 0)
{
destination.Write(bytes, 0, readBytes);
}
}
return(true);
}
catch (FileNotFoundException)
{
return(false);
}
}
this.Pin();
try
{
using (var writer = new PersistedDataWriter(destination, this.DimensionSet, this.memoryStreamManager))
{
writer.WriteData(name, this.StartTime, this.EndTime, (uint)this.data.Count, this.sources.Values,
this.data);
}
return(true);
}
finally
{
this.Unpin();
}
}
public Stream WriteToMemoryStream()
{
lock (this)
{
if (this.data == null)
{
return(null);
}
var stream = new MemoryStream();
using (var writer = new PersistedDataWriter(stream, this.DimensionSet, this.memoryStreamManager))
{
writer.WriteData(string.Empty, this.StartTime, this.EndTime, (uint)this.data.Count,
this.sources.Values, this.data);
}
stream.Flush();
stream.Position = 0;
return(stream);
}
}
private void WriteToFile()
{
lock (this)
{
if (this.Filename == null || !this.Dirty || this.data == null)
{
return;
}
this.Flush();
Events.Write.BeginWritingData(this.Filename);
using (var stream = new FileStream(this.Filename, FileMode.Create, FileAccess.Write, FileShare.Read))
using (var writer = new PersistedDataWriter(stream, this.DimensionSet, this.memoryStreamManager))
{
writer.WriteData(string.Empty, this.StartTime, this.EndTime, (uint)this.data.Count,
this.sources.Values, this.data);
}
this.dirty = false;
this.data.Dirty = false;
Events.Write.EndWritingData(this.Filename);
}
}
