/// <summary>
/// Import an item from an <see cref="ArchiveReader"/>.
/// </summary>
/// <param name="archive">The archive to be imported.</param>
public TModel Import(ArchiveReader archive)
{
TModel item = null;
delayEvents();
try
{
using (var write = ContextFactory.GetForWrite()) // used to share a context for full import. keep in mind this will block all writes.
{
try
{
if (!write.IsTransactionLeader)
{
throw new InvalidOperationException($"Ensure there is no parent transaction so errors can correctly be handled by {this}");
}
// create a new model (don't yet add to database)
item = CreateModel(archive);
var existing = CheckForExisting(item);
if (existing != null)
{
Logger.Log($"Found existing {typeof(TModel)} for {archive.Name} (ID {existing.ID}). Skipping import.", LoggingTarget.Database);
return(existing);
}
item.Files = createFileInfos(archive, Files);
Populate(item, archive);
// import to store
ModelStore.Add(item);
}
catch (Exception e)
{
write.Errors.Add(e);
throw;
}
}
Logger.Log($"Import of {archive.Name} successfully completed!", LoggingTarget.Database);
}
catch (Exception e)
{
Logger.Error(e, $"Import of {archive.Name} failed and has been rolled back.", LoggingTarget.Database);
item = null;
}
finally
{
// we only want to flush events after we've confirmed the write context didn't have any errors.
flushEvents(item != null);
}
return(item);
}
/// <summary>
/// Import an item from an <see cref="ArchiveReader"/>.
/// </summary>
/// <param name="archive">The archive to be imported.</param>
public TModel Import(ArchiveReader archive)
{
using (ContextFactory.GetForWrite()) // used to share a context for full import. keep in mind this will block all writes.
{
// create a new model (don't yet add to database)
var item = CreateModel(archive);
var existing = CheckForExisting(item);
if (existing != null)
{
return(existing);
}
item.Files = createFileInfos(archive, Files);
Populate(item, archive);
// import to store
ModelStore.Add(item);
return(item);
}
}
/// <summary>
/// Import an item from a <see cref="TModel"/>.
/// </summary>
/// <param name="item">The model to be imported.</param>
/// <param name="archive">An optional archive to use for model population.</param>
public TModel Import(TModel item, ArchiveReader archive = null)
{
delayEvents();
try
{
Logger.Log($"Importing {item}...", LoggingTarget.Database);
using (var write = ContextFactory.GetForWrite()) // used to share a context for full import. keep in mind this will block all writes.
{
try
{
if (!write.IsTransactionLeader)
{
throw new InvalidOperationException($"Ensure there is no parent transaction so errors can correctly be handled by {this}");
}
if (archive != null)
{
item.Files = createFileInfos(archive, Files);
}
Populate(item, archive);
var existing = CheckForExisting(item);
if (existing != null)
{
if (CanUndelete(existing, item))
{
Undelete(existing);
Logger.Log($"Found existing {typeof(TModel)} for {item} (ID {existing.ID}). Skipping import.", LoggingTarget.Database);
handleEvent(() => ItemAdded?.Invoke(existing, true));
return(existing);
}
else
{
Delete(existing);
ModelStore.PurgeDeletable(s => s.ID == existing.ID);
}
}
PreImport(item);
// import to store
ModelStore.Add(item);
}
catch (Exception e)
{
write.Errors.Add(e);
throw;
}
}
Logger.Log($"Import of {item} successfully completed!", LoggingTarget.Database);
}
catch (Exception e)
{
Logger.Error(e, $"Import of {item} failed and has been rolled back.", LoggingTarget.Database);
item = null;
}
finally
{
// we only want to flush events after we've confirmed the write context didn't have any errors.
flushEvents(item != null);
}
return(item);
}
