public ISequence LoadFromFile(string filePath)
{
if (filePath == null)
{
throw new InvalidOperationException("Cannot load from a null file path.");
}
if (!File.Exists(filePath))
{
throw new InvalidOperationException("File does not exist.");
}
IFileReader fileReader = FileReaderFactory.Instance.CreateFileReader();
if (fileReader == null)
{
return(null);
}
IObjectContentWriter contentWriter = ObjectContentWriterFactory.Instance.CreateSequenceContentWriter(filePath);
if (contentWriter == null)
{
return(null);
}
IContentMigrator contentMigrator = ContentMigratorFactory.Instance.CreateSequenceContentMigrator(filePath);
if (contentMigrator == null)
{
return(null);
}
ISequenceTypeModuleInstance sequenceTypeModule = SequenceTypeService.Instance.CreateSequenceFactory(filePath);
if (sequenceTypeModule == null)
{
return(null);
}
ISequence sequence = sequenceTypeModule.CreateSequence();
if (sequence == null)
{
return(null);
}
sequence = MigratingObjectLoaderService.Instance.LoadFromFile(sequence, filePath, fileReader, contentWriter,
contentMigrator, sequenceTypeModule.ObjectVersion);
if (sequence != null)
{
sequence.FilePath = filePath;
}
return(sequence);
}
private ISequence _CreateSequenceInstance(string fileType)
{
ISequenceTypeModuleInstance sequenceFactory = SequenceTypeService.Instance.CreateSequenceFactory(fileType);
if (sequenceFactory != null)
{
return(sequenceFactory.CreateSequence());
}
return(null);
}
