public byte[] Persist(IKdbTree tree, byte[] hashOfHeader)
{
var metaElement = tree.Document.Descendants("Meta").FirstOrDefault();
if (metaElement == null)
{
metaElement = new XElement("Meta", new XElement("Generator", "MetroPass"));
tree.Document.Add(metaElement);
}
var headerHashElement = metaElement.Elements("HeaderHash").FirstOrDefault();
if (headerHashElement == null)
{
headerHashElement = new XElement("HeaderHash");
metaElement.Add(headerHashElement);
}
headerHashElement.Value = Convert.ToBase64String(hashOfHeader);
var root = tree.Document.Descendants("Root").First();
EncodeXml(root);
MemoryStream ms = new MemoryStream();
using (XmlWriter xw = XmlWriter.Create(ms))
{
tree.Document.WriteTo(xw);
}
return ms.ToArray() ;
}
public IKdbWriter CreateWriter(IKdbTree tree)
{
if (tree is Kdb4Tree)
{
return new Kdb4Writer(new Kdb4HeaderWriter(),
_databaseEncryptor,
_keyTransformer,
_hasher,
_gzipFactory);
}
else
{
throw new NotSupportedException();
}
}
