/// <summary>
/// Loads a File object designated by its Guid from its definition file
/// </summary>
/// <param name="g">The guid of the file to load</param>
/// <param name="di">The directory where to read the definition file</param>
/// <returns>The File designated by g</returns>
public static File SelectByGuid(Guid g, DirectoryInfo di)
{
if (g.Equals(Guid.Empty))
{
throw new ArgumentException(Properties.Resources.BLExceptionEmptyFileGuid, "g");
}
if (!di.Exists)
{
throw new ArgumentException(Properties.Resources.BLExceptionMissingDirectory, "di");
}
FileInfo[] arrFileInfo = di.GetFiles(FileBroker.GetDefinitionFile(g));
if ((arrFileInfo == null) || (arrFileInfo.Length < 1))
{
throw new ArgumentException(Properties.Resources.BLExceptionMissingDefinition, "g");
}
File objFileRet;
using (XmlReader objXmlReader = XmlReader.Create(Path.Combine(di.FullName, FileBroker.GetDefinitionFile(g))))
{
XmlSerializer objXmlSerializer = new XmlSerializer(typeof(File));
objFileRet = objXmlSerializer.Deserialize(objXmlReader) as File;
}
return(objFileRet);
}
/// <summary>
/// Creates a definition file for a File object
/// </summary>
/// <param name="f">The File object to persist</param>
/// <param name="di">The directory where to write the definition file</param>
public static void Insert(File f, DirectoryInfo di)
{
if (f == null)
{
throw new ArgumentNullException("f", Properties.Resources.BLExceptionNullFile);
}
if (!di.Exists)
{
throw new ArgumentException(Properties.Resources.BLExceptionMissingDirectory, "di");
}
if (f.IsSaveRequired)
{
FileInfo[] arrFileInfo = di.GetFiles(FileBroker.GetDefinitionFile(f.Guid));
if ((arrFileInfo != null) && (arrFileInfo.Length > 0))
{
throw new ArgumentException(Properties.Resources.BLExceptionDefinitionExists, "f");
}
using (XmlWriter objXmlWriter = XmlWriter.Create(Path.Combine(di.FullName, FileBroker.GetDefinitionFile(f.Guid))))
{
XmlSerializer objXmlSerializer = new XmlSerializer(typeof(File));
objXmlSerializer.Serialize(objXmlWriter, f);
}
f.SaveCompleted();
}
}
