/// <summary>
/// The main entry point into the .NET IFC import code
/// </summary>
/// <param name="importer">The internal ImporterIFC class that contains information necessary for the import process.</param>
public void ImportIFC(ImporterIFC importer)
{
TheImporter = this;
IDictionary <String, String> options = importer.GetOptions();
TheOptions = m_ImportOptions = IFCImportOptions.Create(options);
// An early check, based on the options set - if we are allowed to use an up-to-date existing file on disk, use it.
try
{
string fullIFCFileName = importer.FullFileName;
if (!TheOptions.ForceImport && !NeedsReload(importer.Document, fullIFCFileName))
{
return;
}
// Clear the category mapping table, to force reload of options.
IFCCategoryUtil.Clear();
if (TheOptions.Intent != IFCImportIntent.Reference)
{
IFCImportFile.Import(importer);
}
else
{
ReferenceIFC(importer.Document, fullIFCFileName, options);
}
}
catch (Exception ex)
{
if (Importer.TheLog != null)
{
Importer.TheLog.LogError(-1, ex.Message, false);
}
// The following message can sometimes occur when reloading some IFC files
// from external resources. In this case, we should silently fail, and not
// throw.
if (!ex.Message.Contains("Starting a new transaction is not permitted"))
{
throw;
}
}
finally
{
if (Importer.TheLog != null)
{
Importer.TheLog.Close();
}
if (IFCImportFile.TheFile != null)
{
IFCImportFile.TheFile.Close();
}
}
}
/// <summary>
/// Quick reject based on IFC file info and existence of Revit file.
/// </summary>
/// <param name="doc">The parent document.</param>
/// <param name="originalIFCFileName">The IFC file name.</param>
/// <returns>True if we need a reload; false if nothing has changed.</returns>
private bool NeedsReload(Document doc, string originalIFCFileName)
{
string ifcFileName = ImporterIFCUtils.GetLocalFileName(doc, originalIFCFileName);
if (ifcFileName == null)
{
return(true);
}
string revitFileName = IFCImportFile.GetRevitFileName(ifcFileName);
// If the RVT file doesn't exist, we'll reload. Otherwise, look at saved file size and timestamp.
if (!File.Exists(revitFileName))
{
return(true);
}
FileInfo infoIFC = null;
try
{
infoIFC = new FileInfo(ifcFileName);
}
catch
{
return(true);
}
long ifcFileLength = infoIFC.Length;
if ((TheOptions.OriginalFileSize != 0) && (ifcFileLength != TheOptions.OriginalFileSize))
{
return(true);
}
// If we got a local IFC file name that is different from the original file name, that may have resulted in a load
// operation that would update the timestamp. In this case, ignore that check.
// Unfortunately, this means that it is possible that an updated IFC file with the same file size but different contents
// would register as unchanged when it was. The alternative, though, is to reload the IFC file on every file open,
// which is unacceptable.
bool checkFileTimestamp = (ifcFileName == originalIFCFileName);
if (checkFileTimestamp)
{
// Ignore ticks - only needs to be accurate to the second, or 10,000,000 ticks.
Int64 diffTicks = infoIFC.LastWriteTimeUtc.Ticks - TheOptions.OriginalTimeStamp.Ticks;
if (diffTicks < 0 || diffTicks >= 10000000)
{
return(true);
}
}
return(false);
}
/// <summary>
/// The main entry point into the .NET IFC import code
/// </summary>
/// <param name="importer">The internal ImporterIFC class that contains information necessary for the import process.</param>
public void ImportIFC(ImporterIFC importer)
{
TheImporter = this;
IDictionary <String, String> options = importer.GetOptions();
TheOptions = m_ImportOptions = IFCImportOptions.Create(options);
// An early check, based on the options set - if we are allowed to use an up-to-date existing file on disk, use it.
try
{
string fullFileName = importer.FullFileName;
string revitFileName = IFCImportFile.GetRevitFileName(fullFileName);
if (!TheOptions.ForceImport && !NeedsReload(fullFileName, revitFileName))
{
return;
}
// Clear the category mapping table, to force reload of options.
IFCCategoryUtil.Clear();
if (TheOptions.Intent != IFCImportIntent.Reference)
{
IFCImportFile.Import(importer);
}
else
{
ReferenceIFC(importer.Document, fullFileName, options);
}
}
catch (Exception ex)
{
if (Importer.TheLog != null)
{
Importer.TheLog.LogError(-1, ex.Message, false);
}
}
finally
{
if (Importer.TheLog != null)
{
Importer.TheLog.Close();
}
if (IFCImportFile.TheFile != null)
{
IFCImportFile.TheFile.Close();
}
}
}
/// <summary>
/// Import an IFC file into a given document for Reference only.
/// </summary>
/// <param name="document">The host document for the import.</param>
/// <param name="origFullFileName">The full file name of the document.</param>
/// <param name="options">The list of configurable options for this import.</param>
public void ReferenceIFC(Document document, string origFullFileName, IDictionary <String, String> options)
{
// We need to generate a local file name for all of the intermediate files (the log file, the cache file, and the shared parameters file).
string localFileName = ImporterIFCUtils.GetLocalFileName(document, origFullFileName);
if (localFileName == null)
{
throw new InvalidOperationException("Could not generate local file name for: " + origFullFileName);
}
// An early check, based on the options set - if we are allowed to use an up-to-date existing file on disk, use it.
// It is possible that the log file may have been created in CreateImporter above,
// if it is used by an external developer.
if (TheLog == null)
{
m_ImportLog = IFCImportLog.CreateLog(localFileName, "log.html", !m_ImportOptions.DisableLogging);
}
Document originalDocument = document;
Document ifcDocument = null;
if (TheOptions.Action == IFCImportAction.Link)
{
string linkedFileName = IFCImportFile.GetRevitFileName(localFileName);
ifcDocument = LoadOrCreateLinkDocument(originalDocument, linkedFileName);
}
else
{
ifcDocument = originalDocument;
}
bool useCachedRevitFile = DocumentUpToDate(ifcDocument, localFileName);
// In the case where the document is already opened as a link, but it has been updated on disk,
// give the user a warning and use the cached value.
if (!useCachedRevitFile && ifcDocument.IsLinked)
{
useCachedRevitFile = true;
Importer.AddDelayedLinkError(BuiltInFailures.ImportFailures.IFCCantUpdateLinkedFile);
}
if (!useCachedRevitFile)
{
m_ImportCache = IFCImportCache.Create(ifcDocument, localFileName);
// Limit creating the cache to Link, but may either remove limiting or make it more restrict (reload only) later.
if (TheOptions.Action == IFCImportAction.Link)
{
TheCache.CreateExistingElementMaps(ifcDocument);
}
// TheFile will contain the same value as the return value for this function.
IFCImportFile.Create(localFileName, m_ImportOptions, ifcDocument);
}
if (useCachedRevitFile || IFCImportFile.TheFile != null)
{
IFCImportFile theFile = IFCImportFile.TheFile;
if (theFile != null)
{
if (theFile.IFCProject != null)
{
IFCObjectDefinition.CreateElement(ifcDocument, theFile.IFCProject);
}
// Also process any other entities to create.
foreach (IFCObjectDefinition objDef in IFCImportFile.TheFile.OtherEntitiesToCreate)
{
IFCObjectDefinition.CreateElement(ifcDocument, objDef);
}
theFile.EndImport(ifcDocument, localFileName);
}
if (TheOptions.Action == IFCImportAction.Link)
{
// If we have an original Revit link file name, don't create a new RevitLinkType -
// we will use the existing one.
bool useExistingType = (TheOptions.RevitLinkFileName != null);
ElementId revitLinkTypeId = IFCImportFile.LinkInFile(origFullFileName, localFileName, ifcDocument, originalDocument, useExistingType, !useCachedRevitFile);
}
}
if (m_ImportCache != null)
{
m_ImportCache.Reset(ifcDocument);
}
}
/// <summary>
/// Import an IFC file into a given document for Reference only.
/// </summary>
/// <param name="document">The host document for the import.</param>
/// <param name="fullFileName">The full file name of the document.</param>
/// <param name="options">The list of configurable options for this import.</param>
public void ReferenceIFC(Document document, string fullFileName, IDictionary <String, String> options)
{
// An early check, based on the options set - if we are allowed to use an up-to-date existing file on disk, use it.
m_ImportLog = IFCImportLog.CreateLog(fullFileName, "log.html");
Document originalDocument = document;
Document ifcDocument = null;
if (TheOptions.Action == IFCImportAction.Link)
{
string linkedFileName = IFCImportFile.GetRevitFileName(fullFileName);
ifcDocument = LoadOrCreateLinkDocument(originalDocument, linkedFileName);
if (ifcDocument == null)
{
return;
}
}
else
{
ifcDocument = originalDocument;
}
bool useCachedRevitFile = DocumentUpToDate(ifcDocument, fullFileName);
// In the case where the document is already opened as a link, but it has been updated on disk,
// give the user a warning and use the cached value.
if (!useCachedRevitFile && ifcDocument.IsLinked)
{
useCachedRevitFile = true;
Importer.AddDelayedLinkError(BuiltInFailures.ImportFailures.IFCCantUpdateLinkedFile);
}
if (!useCachedRevitFile)
{
m_ImportCache = IFCImportCache.Create(ifcDocument, fullFileName);
// Limit creating the cache to Link, but may either remove limiting or make it more restrict (reload only) later.
if (TheOptions.Action == IFCImportAction.Link)
{
TheCache.CreateExistingElementMaps(ifcDocument);
}
// TheFile will contain the same value as the return value for this function.
IFCImportFile.Create(fullFileName, m_ImportOptions, ifcDocument);
}
if (useCachedRevitFile || IFCImportFile.TheFile != null)
{
IFCImportFile theFile = IFCImportFile.TheFile;
if (theFile != null)
{
if (theFile.IFCProject != null)
{
IFCObjectDefinition.CreateElement(ifcDocument, theFile.IFCProject);
}
// Also process any other entities to create.
foreach (IFCObjectDefinition objDef in IFCImportFile.TheFile.OtherEntitiesToCreate)
{
IFCObjectDefinition.CreateElement(ifcDocument, objDef);
}
theFile.EndImport(ifcDocument, fullFileName);
}
if (TheOptions.Action == IFCImportAction.Link)
{
// If we have an original Revit link file name, don't create a new RevitLinkType -
// we will use the existing one.
bool useExistingType = (TheOptions.RevitLinkFileName != null);
ElementId revitLinkTypeId = IFCImportFile.LinkInFile(fullFileName, ifcDocument, originalDocument, useExistingType, !useCachedRevitFile);
}
}
if (m_ImportCache != null)
{
m_ImportCache.Reset(ifcDocument);
}
}
public void ImportIFC(ImporterIFC importer)
{
TheImporter = this;
IDictionary <String, String> options = importer.GetOptions();
TheOptions = m_ImportOptions = IFCImportOptions.Create(options);
// An early check, based on the options set - if we are allowed to use an up-to-date existing file on disk, use it.
try
{
string revitFileName = IFCImportFile.GetRevitFileName(importer.FullFileName);
if (!TheOptions.ForceImport && !NeedsReload(importer.FullFileName, revitFileName))
{
return;
}
// Clear the category mapping table, to force reload of options.
IFCCategoryUtil.Clear();
if (TheOptions.Intent != IFCImportIntent.Reference)
{
IFCImportFile.Import(importer);
}
else
{
Document originalDocument = importer.Document;
Document ifcDocument = null;
if (TheOptions.Action == IFCImportAction.Link)
{
string linkedFileName = IFCImportFile.GetRevitFileName(importer.FullFileName);
ifcDocument = LoadOrCreateLinkDocument(originalDocument, linkedFileName);
if (ifcDocument == null)
{
return;
}
}
else
{
ifcDocument = originalDocument;
}
bool useCachedRevitFile = DocumentUpToDate(ifcDocument, importer.FullFileName);
// In the case where the document is already opened as a link, but it has been updated on disk,
// give the user a warning and use the cached value.
if (!useCachedRevitFile && ifcDocument.IsLinked)
{
useCachedRevitFile = true;
Importer.AddDelayedLinkError(BuiltInFailures.ImportFailures.IFCCantUpdateLinkedFile);
}
if (!useCachedRevitFile)
{
m_ImportCache = IFCImportCache.Create(ifcDocument, importer.FullFileName);
// Limit creating the cache to Link, but may either remove limiting or make it more restrict (reload only) later.
if (TheOptions.Action == IFCImportAction.Link)
{
TheCache.CreateExistingElementMaps(ifcDocument);
}
// TheFile will contain the same value as the return value for this function.
IFCImportFile.Create(importer.FullFileName, m_ImportOptions, ifcDocument);
}
if (useCachedRevitFile || IFCImportFile.TheFile != null)
{
if (IFCImportFile.TheFile != null)
{
if (IFCImportFile.TheFile.IFCProject != null)
{
IFCObjectDefinition.CreateElement(ifcDocument, IFCImportFile.TheFile.IFCProject);
}
IFCImportFile.TheFile.EndImport(ifcDocument, importer.FullFileName);
}
if (TheOptions.Action == IFCImportAction.Link)
{
// If we have an original Revit link file name, don't create a new RvtLinkSymbol -
// we will use the existing one.
bool useExistingType = (TheOptions.RevitLinkFileName != null);
IFCImportFile.LinkInFile(importer.FullFileName, ifcDocument, originalDocument, useExistingType, !useCachedRevitFile);
}
}
m_ImportCache.Reset(ifcDocument);
}
}
catch (Exception ex)
{
if (IFCImportFile.TheFile != null)
{
IFCImportFile.TheFile.Log.LogError(-1, ex.Message, false);
}
}
finally
{
if (IFCImportFile.TheFile != null)
{
IFCImportFile.TheFile.Close();
}
}
}
