/// <summary>
/// Gets the document stream for the specified entity identifier.
/// </summary>
/// <param name="entityId">The entity id.</param>
/// <returns>The open file stream for the document stored in the file stream table.</returns>
/// <remarks></remarks>
private static RevisionData GetDocumentStreamForRevisionId(long entityId)
{
Stream stream = null;
// Get the document revision
var documentRevision = Entity.Get <DocumentRevision>(entityId);
if (documentRevision == null)
{
EventLog.Application.WriteError("Unable to get the document revision stream, invalid document entityId {0}", entityId);
return(null);
}
stream = FileRepositoryHelper.GetFileDataStreamForToken(Factory.DocumentFileRepository, documentRevision.FileDataHash);
RevisionData result = new RevisionData
{
Stream = stream,
FileExtension = (documentRevision.FileExtension ?? "").ToLowerInvariant().Trim()
};
return(result);
}
/// <summary>
/// Worker thread method to generate a report document.
/// </summary>
/// <param name="reportSettings">The report-template settings.</param>
/// <param name="taskInfo">The long-running task info object.</param>
private static void GenerateDocumentWorker(ReportTemplateSettings reportSettings, LongRunningInfo taskInfo)
{
// Load report template resource
var reportTemplate = Entity.Get <ReadiNow.Model.ReportTemplate>(reportSettings.ReportTemplate);
if (reportTemplate == null)
{
throw new Exception("Report template could not be loaded.");
}
// Load the document resource
if (reportTemplate.ReportTemplateUsesDocument == null)
{
throw new Exception("Report template has no associated template document.");
}
long docId = reportTemplate.ReportTemplateUsesDocument.Id;
// Load the document stream
RevisionData templateData = GetLatestDocument(docId);
Stream templateStream = templateData.Stream;
string extension = templateData.FileExtension;
// Verify supported types
if (extension != ".docx" && extension != ".dotx" && extension != ".docm" && extension != ".dotm")
{
throw new Exception("Report template has an unsupported file extension.");
}
// Verify resource types
VerifyResourceTypes(reportSettings, reportTemplate);
// Fill settings
var settings = new GeneratorSettings
{
TimeZoneName = reportSettings.TimeZone
};
if (reportSettings.SelectedResources != null)
{
settings.SelectedResourceId = reportSettings.SelectedResources.First( ).Id;
}
// Generate the document
var outputSteam = new MemoryStream( );
Factory.DocumentGenerator.CreateDocument(templateStream, outputSteam, settings);
outputSteam.Flush( );
outputSteam.Position = 0;
// Store file stream in the temporary table
string token = PersistTemporaryFile(outputSteam);
// Store the result into a document entity
string filename = string.Format("{0} {1:s}", reportTemplate.Name, DateTime.Now);
long documentId = StoreFileInEntity(outputSteam, filename, extension, token);
// Return token that is the document identifier that is used for the download of the document file entity.
taskInfo.ResultData = documentId.ToString(CultureInfo.InvariantCulture);
LongRunningHelper.SaveLongRunningTaskInfo(taskInfo);
}
