/// <summary>
/// Upgrades version to the particular version
/// </summary>
/// <remarks>It internally calls the Downgrade of the immediate lower version, and so on</remarks>
/// <param name="source"></param>
/// <param name="version"></param>
/// <returns>downgraded version</returns>
private dynamic DowngradeVersionTo(dynamic source, VersionNumbers version)
{
var targetObj = source;
var targetVersion = VersionCache.GetVersion(targetObj.GetType());
while (targetVersion > version)
{
var tempObj = targetObj.Downgrade();
if (tempObj == null)
{
break;
}
targetVersion = VersionCache.GetVersion(tempObj.GetType());
targetObj = tempObj;
}
return(targetObj);
}
/// <summary>
/// Convert, a dynamic to any type you care about.
/// Note: this is mostly used when you have serialized data and do not know its version.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="source"></param>
/// <returns></returns>
public T ConvertFromDynamic <T>(dynamic source) where T : class
{
var sourceVersion = VersionCache.GetVersion(source.GetType());
var destinationVersion = VersionCache.GetVersion(typeof(T));
if (destinationVersion == sourceVersion)
{
return(source as T);
}
if (destinationVersion > sourceVersion)
{
return(UpgradeVersionTo(source, destinationVersion) as T);
}
if (destinationVersion < sourceVersion)
{
return(DowngradeVersionTo(source, destinationVersion) as T);
}
return(null);
}
/// <summary>
/// Convert from Any version to Any version
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="K"></typeparam>
/// <param name="source"></param>
/// <returns></returns>
public K Convert <T, K>(T source) where K : class
{
var sourceVersion = VersionCache.GetVersion(source.GetType());
var destinationVersion = VersionCache.GetVersion(typeof(K));
if (destinationVersion == sourceVersion)
{
return(source as K);
}
if (destinationVersion > sourceVersion)
{
return(UpgradeVersionTo(source, destinationVersion) as K);
}
if (destinationVersion < sourceVersion)
{
return(DowngradeVersionTo(source, destinationVersion) as K);
}
return(null);
}
