private string MoveAndSaveOriginalFileInContentDiscriptor(DatasetVersion datasetVersion)
{
TaskManager TaskManager = (TaskManager)Session["TaskManager"];
//dataset id and data structure id are available via datasetVersion properties,why you are passing them via the BUS? Javad
long datasetId = Convert.ToInt64(TaskManager.Bus[TaskManager.DATASET_ID]);
long dataStructureId = Convert.ToInt64(TaskManager.Bus[TaskManager.DATASTRUCTURE_ID]);
DatasetManager datasetManager = new DatasetManager();
string title = TaskManager.Bus[TaskManager.DATASET_TITLE].ToString();
string ext = ".xlsm";// TaskManager.Bus[TaskManager.EXTENTION].ToString();
ExcelWriter excelWriter = new ExcelWriter();
// Move Original File to its permanent location
String tempPath = TaskManager.Bus[TaskManager.FILEPATH].ToString();
string originalFileName = TaskManager.Bus[TaskManager.FILENAME].ToString();
string storePath = excelWriter.GetFullStorePathOriginalFile(datasetId, datasetVersion.Id, originalFileName);
string dynamicStorePath = excelWriter.GetDynamicStorePathOriginalFile(datasetId, datasetVersion.VersionNo, originalFileName);
//Why using the excel writer, isn't any function available in System.IO.File/ Directory, etc. Javad
FileHelper.MoveFile(tempPath, storePath);
//Register the original data as a resource of the current dataset version
ContentDescriptor originalDescriptor = new ContentDescriptor()
{
OrderNo = 1,
Name = "original",
MimeType = "application/xlsm",
URI = dynamicStorePath,
DatasetVersion = datasetVersion,
};
if (datasetVersion.ContentDescriptors.Count(p => p.Name.Equals(originalDescriptor.Name)) > 0)
{ // remove the one contentdesciptor
foreach (ContentDescriptor cd in datasetVersion.ContentDescriptors)
{
if (cd.Name == originalDescriptor.Name)
{
cd.URI = originalDescriptor.URI;
}
}
}
else
{
// add current contentdesciptor to list
datasetVersion.ContentDescriptors.Add(originalDescriptor);
}
return storePath;
}
private string SaveFileInContentDiscriptor(DatasetVersion datasetVersion)
{
try
{
//XXX put function like GetStorePathOriginalFile or GetDynamicStorePathOriginalFile
// the function is available in the abstract class datawriter
ExcelWriter excelWriter = new ExcelWriter();
// Move Original File to its permanent location
String tempPath = TaskManager.Bus[TaskManager.FILEPATH].ToString();
string originalFileName = TaskManager.Bus[TaskManager.FILENAME].ToString();
string storePath = excelWriter.GetFullStorePathOriginalFile(datasetVersion.Dataset.Id, datasetVersion.VersionNo, originalFileName);
string dynamicStorePath = excelWriter.GetDynamicStorePathOriginalFile(datasetVersion.Dataset.Id, datasetVersion.VersionNo, originalFileName);
string extention = TaskManager.Bus[TaskManager.EXTENTION].ToString();
Debug.WriteLine("extention : " + extention);
//Why using the excel writer, isn't any function available in System.IO.File/ Directory, etc. Javad
FileHelper.MoveFile(tempPath, storePath);
string mimeType = MimeMapping.GetMimeMapping(originalFileName);
//Register the original data as a resource of the current dataset version
ContentDescriptor originalDescriptor = new ContentDescriptor()
{
OrderNo = 1,
Name = "unstructuredData",
MimeType = mimeType,
URI = dynamicStorePath,
DatasetVersion = datasetVersion,
};
// add current contentdesciptor to list
datasetVersion.ContentDescriptors.Add(originalDescriptor);
return storePath;
}
catch(Exception e)
{
return "";
}
}
private string GenerateDownloadFile(DatasetVersion datasetVersion)
{
TaskManager TaskManager = (TaskManager)Session["TaskManager"];
//dataset id and data structure id are available via datasetVersion properties,why you are passing them via the BUS? Javad
long datasetId = Convert.ToInt64(TaskManager.Bus[TaskManager.DATASET_ID]);
long dataStructureId = Convert.ToInt64(TaskManager.Bus[TaskManager.DATASTRUCTURE_ID]);
DatasetManager datasetManager = new DatasetManager();
string title = TaskManager.Bus[TaskManager.DATASET_TITLE].ToString();
string ext = ".xlsm";// TaskManager.Bus[TaskManager.EXTENTION].ToString();
ExcelWriter excelWriter = new ExcelWriter();
// create the generated file and determine its location
string path = excelWriter.CreateFile(datasetId, datasetVersion.VersionNo, dataStructureId, title, ext);
string dynamicPath = excelWriter.GetDynamicStorePath(datasetId, datasetVersion.VersionNo, title, ext);
//Register the generated data file as a resource of the current dataset version
ContentDescriptor generatedDescriptor = new ContentDescriptor()
{
OrderNo = 1,
Name = "generated",
MimeType = "application/xlsm",
URI = dynamicPath,
DatasetVersion = datasetVersion,
};
if (datasetVersion.ContentDescriptors.Count(p => p.Name.Equals(generatedDescriptor.Name)) > 0)
{ // remove the one contentdesciptor
foreach (ContentDescriptor cd in datasetVersion.ContentDescriptors)
{
if (cd.Name == generatedDescriptor.Name)
{
cd.URI = generatedDescriptor.URI;
}
}
}
else
{
// add current contentdesciptor to list
datasetVersion.ContentDescriptors.Add(generatedDescriptor);
}
// note: the descriptors are not persisted yet, they will be persisted if the caller of this method persists the datasetVersion object.
return path;
}
/// <summary>
/// Detaches the content descriptor object from its corresponding dataset version, and then deletes the content descriptor.
/// </summary>
/// <param name="entity">The content descriptor object to be deleted.</param>
/// <returns>True if successful, False otherwise.</returns>
public bool DeleteContentDescriptor(ContentDescriptor entity)
{
Contract.Requires(entity != null);
Contract.Requires(entity.Id >= 0);
using (IUnitOfWork uow = this.GetUnitOfWork())
{
IRepository<ContentDescriptor> repo = uow.GetRepository<ContentDescriptor>();
//repo.Evict(entity);
//entity = repo.Reload(entity);
// Javad: There is a problem with relaoding the entity, which is:
// when the entity is reloaded, another onject of it is created, which is different that the one attached to the DatasetVersion.
// They have the same PK, but diffect HashCode, hence NH complains about having more than one object in session(s).
// To be sure the entity is object equial to the one in the ContentDescriptors list, the follwing statement should work.
entity.DatasetVersion.ContentDescriptors.Remove(entity);
// The follwoing line should not be needed, if entity is the same object as in the list
//entity.DatasetVersion.ContentDescriptors.Remove(
// entity.DatasetVersion.ContentDescriptors.FirstOrDefault(p => p.Id.Equals(entity.Id))
// );
entity.DatasetVersion = null;
repo.Delete(entity);
uow.Commit();
}
// if any problem was detected during the commit, an exception will be thrown!
return (true);
}
/// <summary>
/// Resource descriptors are the way to link resources to data set versions (and some other entity types, too).
/// The resources can be persisted in the local or a remote file system or any other location reachable via a URL.
/// The resource itself can be any type of file, service returning a resource, a normal webpage, and so on.
/// The method creates a resource descriptor, links it to the provided data set version and persists the descriptor.
/// </summary>
/// <param name="name">A friendly name for the resource, mainly used in the UI</param>
/// <param name="mimeType">The type of the resource. Used in the methods that transfer and/or process the resource</param>
/// <param name="uri">The URI of the resource, may contain protocol, access method, authorization information , etc.</param>
/// <param name="orderNo">The order of the resource in the list of all resources associated to the same dataset version.</param>
/// <param name="datasetVersion"></param>
/// <returns>A persisted <seealso cref="ContentDescriptor"/> object linked to the <paramref name="datasetVersion"/></returns>
/// <remarks>The method does not have access to the resource itself, and does not persist it.</remarks>
public ContentDescriptor CreateContentDescriptor(string name, string mimeType, string uri, Int32 orderNo, DatasetVersion datasetVersion)
{
Contract.Requires(!string.IsNullOrWhiteSpace(name));
Contract.Requires(!string.IsNullOrWhiteSpace(mimeType));
Contract.Requires(!string.IsNullOrWhiteSpace(uri));
Contract.Requires(datasetVersion != null);
// check whether is it needed that the dataset is checked out to add descriptor
Contract.Ensures(Contract.Result<ContentDescriptor>() != null);
ContentDescriptor e = new ContentDescriptor()
{
Name = name,
MimeType = mimeType,
OrderNo = orderNo,
URI = uri,
DatasetVersion = datasetVersion,
};
e.DatasetVersion.ContentDescriptors.Add(e);
using (IUnitOfWork uow = this.GetUnitOfWork())
{
IRepository<ContentDescriptor> repo = uow.GetRepository<ContentDescriptor>();
repo.Put(e);
uow.Commit();
}
return (e);
}
/// <summary>
/// checks out the dataset and creates a new version on it. The new version acts like a working copy while it is not committed, hence editable.
/// </summary>
/// <param name="datasetId"></param>
/// <param name="username"></param>
private bool checkOutDataset(Int64 datasetId, string username, DateTime timestamp)
{
bool checkedOut = false;
//XmlDocument doc = new XmlDocument();
//doc.LoadXml(@"<Metadata>Empty</Metadata>");
using (IUnitOfWork uow = this.GetUnitOfWork())
{
IRepository<Dataset> repo = uow.GetRepository<Dataset>();
var q = repo.Query(p => p.Id == datasetId && p.Status == DatasetStatus.CheckedIn && (p.CheckOutUser.Equals(string.Empty) || p.CheckOutUser == null));
Dataset ds = q.FirstOrDefault();
if (ds != null)
{
DatasetVersion dsNewVersion = new DatasetVersion()
{
Timestamp = timestamp,
//Metadata = doc,
//ExtendedPropertyValues = new List<ExtendedPropertyValue>(),
//ContentDescriptors = new List<ContentDescriptor>(),
Status = DatasetVersionStatus.CheckedOut,
Dataset = ds,
};
// if there is a previous version, copy its metadata, content descriptors and extended property values to the newly created version
if (ds.Versions.Count() > 0)
{
var previousCheckedInVersion = ds.Versions.Where(p => p.Status == DatasetVersionStatus.CheckedIn).First();
if (previousCheckedInVersion != null && previousCheckedInVersion.Timestamp >= timestamp) // it is an error
{
throw new Exception(string.Format("The provided timestamp {0} is earlier than the timestamp of the latest checked in version!", timestamp));
}
if (previousCheckedInVersion != null)
{
dsNewVersion.Metadata = previousCheckedInVersion.Metadata;
dsNewVersion.ExtendedPropertyValues = previousCheckedInVersion.ExtendedPropertyValues;
foreach (var item in previousCheckedInVersion.ContentDescriptors)
{
ContentDescriptor cd = new ContentDescriptor()
{
MimeType = item.MimeType,
Name = item.Name,
OrderNo = item.OrderNo,
URI = item.URI,
DatasetVersion = dsNewVersion,
};
dsNewVersion.ContentDescriptors.Add(cd);
}
}
}
ds.Status = DatasetStatus.CheckedOut;
ds.LastCheckIOTimestamp = timestamp;
ds.CheckOutUser = getUserIdentifier(username);
ds.Versions.Add(dsNewVersion);
repo.Put(ds);
uow.Commit();
checkedOut = true;
}
}
return (checkedOut);
}
/// <summary>
/// Having a changed content descriptor entity, the method applies the changes to the original entity and persists the changes.
/// </summary>
/// <param name="entity">The editedVersion version of the content descriptor entity.</param>
/// <returns>The changed instance.</returns>
/// <remarks>The entity should already exists in the database.</remarks>
public ContentDescriptor UpdateContentDescriptor(ContentDescriptor entity)
{
Contract.Requires(entity != null, "provided entity can not be null");
Contract.Requires(entity.Id >= 0, "provided entity must have a permanent ID");
Contract.Ensures(Contract.Result<ContentDescriptor>() != null && Contract.Result<ContentDescriptor>().Id >= 0, "No entity is persisted!");
using (IUnitOfWork uow = this.GetUnitOfWork())
{
IRepository<ContentDescriptor> repo = uow.GetRepository<ContentDescriptor>();
repo.Put(entity); // Merge is required here!!!!
uow.Commit();
}
return (entity);
}