/// <summary>
/// Gets the file metadata.
/// </summary>
/// <param name="macAddress">The mac address.</param>
/// <param name="computerName">Name of the computer.</param>
/// <param name="fileName">Name of the file.</param>
/// <returns></returns>
public IFileMetadata GetFileMetadata(string macAddress, string computerName, string fileName)
{
dynamic metadata;
IFileMetadata retval = null;
try {
using (var context = new MetaFSDB()) {
if ((metadata = GetMetadata(context, macAddress, computerName, fileName)) != null)
{
// Metadata found
retval = new FileMetadata()
{
MetadataId = metadata.RowId,
Category = metadata.Category,
FileName = metadata.FileName,
FullPath = metadata.FilePath,
TemplateId = metadata.TemplateId,
PcId = metadata.PcId,
Metadata = ((string)metadata.Metadata).LoadAsXDocument(),
SubCategory = metadata.SubCategory,
TemplateBody = ((string)metadata.Template).LoadAsXDocument()
};
}
else // Metadata needs to be created
{
retval = CreateMetadata(fileName);
}
}
} catch (Exception ex) {
Logger.LogError(ex);
}
return(retval);
}
/// <summary>
/// Creates the metadata.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <returns></returns>
private IFileMetadata CreateMetadata(string fileName)
{
IFileMetadata retval = null;
try {
using (var context = new MetaFSDB()) {
var metadata = context.TemplateCatalogues.FirstOrDefault(x => x.IsActive.Value);
if (metadata != null)
{
retval = new FileMetadata()
{
PcId = PcIdentifier,
FullPath = fileName,
TemplateId = metadata.TemplateId,
FileName = Path.GetFileName(fileName),
TemplateBody = metadata.TemplateBody.LoadAsXDocument()
};
}
}
} catch (Exception ex) {
Logger.LogError(ex);
}
return(retval);
}
/// <summary>
/// Creates the record.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="t">The t.</param>
/// <returns></returns>
public bool CreateRecord <T>(T t)
{
var retval = true;
try {
using (var context = new MetaFSDB()) {
if (t is RegisteredPC)
{
context.RegisteredPCs.Add(t as RegisteredPC);
}
else if (t is FileCatalogue)
{
context.FileCatalogues.Add(t as FileCatalogue);
}
else if (t is Metadata)
{
context.Metadatas.Add(t as Metadata);
}
context.SaveChanges();
}
} catch (Exception ex) {
retval = false;
Logger.LogError(ex);
}
return(retval);
}
/// <summary>
/// Preloads the ef.
/// </summary>
/// <param name="args">The arguments.</param>
/// <returns>System.Int32.</returns>
private static int PreloadEF(string args)
{
using (var context = new MetaFSDB())
context.Categories.Any();
return(0);
}
/// <summary>
/// Initializes the database.
/// </summary>
private void InitializeDb()
{
try {
using (var ts = new TransactionScope(TransactionScopeOption.RequiresNew,
new TransactionOptions()
{
IsolationLevel = IsolationLevel.ReadUncommitted
})) {
using (var context = new MetaFSDB()) {
// Create basic categories
if (!context.Categories.Any())
{
context.Categories.AddRange(GetBasicCategories());
}
// Create basic object types
if (!context.ObjectTypes.Any())
{
context.ObjectTypes.AddRange(GetBasicObjectTypes());
}
// Register PC
SelectedMac = NetworkOps.GetMacAddress();
var registeredPc = context.RegisteredPCs.FirstOrDefault(x => x.PCName.Equals(Environment.MachineName,
StringComparison.OrdinalIgnoreCase));
if (registeredPc == null)
{
registeredPc = new RegisteredPC()
{
MacAddress = SelectedMac,
IsEnabled = true,
PCName = Environment.MachineName
};
context.RegisteredPCs.Add(registeredPc);
}
else
{
registeredPc.MacAddress = SelectedMac;
context.RegisteredPCs.Attach(registeredPc);
var entry = context.Entry(registeredPc);
entry.Property(e => e.MacAddress).IsModified = true;
}
context.SaveChanges();
PcIdentifier = registeredPc.PCId;
MachineName = registeredPc.PCName;
}
ts.Complete();
}
} catch (Exception ex) {
Logger.LogError(ex);
}
}
/// <summary>
/// Updates the existing record.
/// </summary>
/// <param name="currentMetadata">The current metadata.</param>
/// <param name="context">The context.</param>
/// <param name="metadata">The metadata.</param>
private void UpdateExistingRecord(IFileMetadata currentMetadata, MetaFSDB context, XDocument metadata)
{
var existing = context.Metadatas.FirstOrDefault(x => x.MetaId == currentMetadata.MetadataId);
existing.Metadata1 = metadata.ToString();
context.Metadatas.Attach(existing);
var entry = context.Entry(existing);
entry.Property(e => e.Metadata1).IsModified = true;
context.SaveChanges();
}
/// <summary>
/// Updates the file metadata.
/// </summary>
/// <param name="currentMetadata">The current metadata.</param>
public void UpdateFileMetadata(IFileMetadata currentMetadata)
{
var metadata = GetMetadataAsXml(Renderer.RehydrateFromUi(), currentMetadata);
try {
using (var ts = new TransactionScope(TransactionScopeOption.RequiresNew,
new TransactionOptions()
{
IsolationLevel = IsolationLevel.ReadUncommitted
})) {
using (var context = new MetaFSDB()) {
if (currentMetadata.MetadataId != 0)
{
UpdateExistingRecord(currentMetadata, context, metadata);
}
else
{
var newFileEntry = context.FileCatalogues.Add(new FileCatalogue()
{
Fk_PCId = PcIdentifier,
FileName = currentMetadata.FileName,
FullPath = currentMetadata.FullPath,
Fk_ObjectType = 1
});
context.SaveChanges();
context.Metadatas.Add(new Metadata()
{
Fk_RowId = newFileEntry.RowId,
Fk_TemplateId = currentMetadata.TemplateId,
Metadata1 = metadata.ToString()
});
context.SaveChanges();
}
}
ts.Complete();
}
} catch (Exception ex) {
Logger.LogError(ex);
}
}
/// <summary>
/// Gets the metadata.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="macAddress">The mac address.</param>
/// <param name="computerName">Name of the computer.</param>
/// <param name="fileName">Name of the file.</param>
/// <returns>System.Object.</returns>
private object GetMetadata(MetaFSDB context, string macAddress, string computerName, string fileName)
{
return((from pcs in context.RegisteredPCs
join fileCat in context.FileCatalogues
on pcs.PCId equals fileCat.Fk_PCId
join meta in context.Metadatas
on fileCat.RowId equals meta.Fk_RowId
join template in context.TemplateCatalogues
on meta.Fk_TemplateId equals template.TemplateId
where pcs.MacAddress == macAddress && fileCat.FullPath == fileName
select new {
PcId = pcs.PCId,
RowId = meta.MetaId,
Metadata = meta.Metadata1,
FileName = fileCat.FileName,
FilePath = fileCat.FullPath,
Category = fileCat.Category,
TemplateId = template.TemplateId,
Template = template.TemplateBody,
SubCategory = fileCat.SubCategory
}).FirstOrDefault());
}
