public static DataSet LoadObjects(SiteImportSettings settings, string objectType, bool siteObjects, bool selectionOnly = false, bool forceXMLStructure = false)
{
DataSet ds;
var e = new ImportGetDataEventArgs
{
Settings = settings,
ObjectType = objectType,
SiteObjects = siteObjects,
SelectionOnly = selectionOnly
};
// Get empty data set
GeneralizedInfo infoObj;
ds = GetEmptyDataSet(settings, objectType, siteObjects, selectionOnly, out infoObj, forceXMLStructure);
// Turn off constrains check
ds.EnforceConstraints = false;
// Raise prepare data event
var eData = new ImportGetDataEventArgs
{
Data = ds,
Settings = settings,
ObjectType = objectType,
SiteObjects = siteObjects,
SelectionOnly = selectionOnly
};
// Handle the event
SpecialActionsEvents.PrepareDataStructure.StartEvent(eData);
// Lowercase table names for compatibility
DataHelper.LowerCaseTableNames(ds);
Stream reader = null;
XmlReader xml = null;
string safeObjectType = ImportExportHelper.GetSafeObjectTypeName(objectType);
// Prepare the path
string filePath = DirectoryHelper.CombinePath(settings.TemporaryFilesPath, ImportExportHelper.DATA_FOLDER) + "\\";
// Get object type subfolder
filePath += ImportExportHelper.GetObjectTypeSubFolder(settings, objectType, siteObjects);
filePath += safeObjectType + ".xml";
string rootElement = safeObjectType;
filePath = ImportExportHelper.GetExportFilePath(filePath);
// Import only if file exists
if (System.IO.File.Exists(filePath))
{
// Reader setting
XmlReaderSettings rs = new XmlReaderSettings();
rs.CloseInput = true;
rs.CheckCharacters = false;
// Open reader
reader = FileStream.New(filePath, CMS.IO.FileMode.Open, CMS.IO.FileAccess.Read, CMS.IO.FileShare.Read, 8192);
xml = XmlReader.Create(reader, rs);
// Read main document element
do
{
xml.Read();
} while ((xml.NodeType != XmlNodeType.Element) && !xml.EOF);
if (xml.Name.ToLowerInvariant() != rootElement.ToLowerInvariant())
{
throw new Exception("[ImportProvider.LoadObjects]: The required page element is '" + safeObjectType + "', element found is '" + xml.Name + "'.");
}
// Get version
if (xml.HasAttributes)
{
xml.MoveToAttribute("version");
}
if ((xml.NodeType != XmlNodeType.Attribute) || (xml.Name.ToLowerInvariant() != "version"))
{
throw new Exception("[ImportProvider.LoadObjects]: Cannot find version attribute.");
}
// Get the dataset
do
{
xml.Read();
} while (((xml.NodeType != XmlNodeType.Element) || (xml.Name != "NewDataSet")) && !xml.EOF);
// Read data
if (xml.Name == "NewDataSet")
{
ds.ReadXml(xml);
}
// Filter data by object type condition for selection, some object types may overlap
if (selectionOnly && !DataHelper.DataSourceIsEmpty(ds))
{
// Remove unwanted rows from data collection with dependence on type condition
if (infoObj.TypeInfo.TypeCondition != null)
{
var dt = ObjectHelper.GetTable(ds, infoObj);
var where = infoObj.TypeInfo.WhereCondition;
where.Replace(" N'", " '").Replace("(N'", "('");
DataHelper.KeepOnlyRows(dt, where);
dt.AcceptChanges();
}
}
}
// Safely close readers
if (xml != null)
{
xml.Close();
}
if (reader != null)
{
reader.Close();
}
return(ds);
}
