public IQueryable <T> GetData <T>()
where T : class, IData
{
CheckTransactionNotInAbortedState();
XmlDataTypeStore dataTypeStore = _xmlDataTypeStoresContainer.GetDataTypeStore(typeof(T));
var currentDataScope = DataScopeManager.MapByType(typeof(T));
if (!dataTypeStore.HasDataScopeName(currentDataScope))
{
return(Enumerable.Empty <T>().AsQueryable());
}
var dataTypeStoreScope = dataTypeStore.GetDataScopeForType(typeof(T));
var fileRecord = XmlDataProviderDocumentCache.GetFileRecord(
dataTypeStoreScope.Filename,
dataTypeStoreScope.ElementName,
dataTypeStore.Helper.CreateDataId);
if (fileRecord.CachedTable == null)
{
ICollection <XElement> elements = fileRecord.ReadOnlyElementsList;
Func <XElement, T> fun = dataTypeStore.Helper.CreateSelectFunction <T>(_dataProviderContext.ProviderName);
var list = new List <T>(elements.Count);
list.AddRange(elements.Select(fun));
fileRecord.CachedTable = new CachedTable <T>(list);
}
return(new CachingQueryable <T>(fileRecord.CachedTable, () => fileRecord.CachedTable.Queryable));
}
private static FileRecord GetFileRecord(XmlDataTypeStore dataTypeStore, XmlDataTypeStoreDataScope dataTypeStoreDataScope)
{
return(XmlDataProviderDocumentCache.GetFileRecord(dataTypeStoreDataScope.Filename, dataTypeStoreDataScope.ElementName, dataTypeStore.Helper.CreateDataId));
}
