/// <exclude />
internal static IQueryable <T> GetDataFromCache <T>(Func <IQueryable <T> > getQueryFunc)
where T : class, IData
{
Verify.That(_isEnabled, "The cache is disabled.");
DataScopeIdentifier dataScopeIdentifier = DataScopeManager.MapByType(typeof(T));
CultureInfo localizationScope = LocalizationScopeManager.MapByType(typeof(T));
var typeData = _cachedData.GetOrAdd(typeof(T), t => new TypeData());
var dataScopeData = typeData.GetOrAdd(dataScopeIdentifier, scope => new ConcurrentDictionary <CultureInfo, CachedTable>());
CachedTable cachedTable;
if (!dataScopeData.TryGetValue(localizationScope, out cachedTable))
{
IQueryable <T> wholeTable = getQueryFunc();
if (!DataProvidersSupportDataWrapping(typeof(T)))
{
DisableCachingForType(typeof(T));
return(Verify.ResultNotNull(wholeTable));
}
if (_maximumSize != -1)
{
List <IData> cuttedTable = TakeElements(wholeTable, _maximumSize + 1);
if (cuttedTable.Count > _maximumSize)
{
DisableCachingForType(typeof(T));
return(Verify.ResultNotNull(wholeTable));
}
cachedTable = new CachedTable(cuttedTable.Cast <T>().AsQueryable());
}
else
{
cachedTable = new CachedTable(wholeTable.Evaluate().AsQueryable());
}
dataScopeData[localizationScope] = cachedTable;
}
var typedData = cachedTable.Queryable as IQueryable <T>;
Verify.IsNotNull(typedData, "Cached value is invalid.");
// Leaving a possibility to extract original query
Func <IQueryable> originalQueryGetter = () =>
{
using (new DataScope(dataScopeIdentifier, localizationScope))
{
return(getQueryFunc());
}
};
return(new CachingQueryable <T>(cachedTable, originalQueryGetter));
}
public XmlDataTypeStoreDataScope GetDataScopeForType(Type type)
{
var currentDataScope = DataScopeManager.MapByType(type);
var culture = LocalizationScopeManager.MapByType(type);
return(GetDataScope(currentDataScope, culture, type));
}
private SqlDataTypeStoreTableKey GetTableKey()
{
string dataScope = DataScopeManager.MapByType(InterfaceType).Name;
string cultureInfo = LocalizationScopeManager.MapByType(InterfaceType).Name;
return(new SqlDataTypeStoreTableKey(dataScope, cultureInfo));
}
/// <summary>
/// Flush cached data for a data type in the specified data scope.
/// </summary>
/// <param name="interfaceType">The type of data to flush from the cache</param>
/// <param name="dataScopeIdentifier">The data scope to flush</param>
public static void ClearCache(Type interfaceType, DataScopeIdentifier dataScopeIdentifier)
{
using (_resourceLocker.Locker)
{
var cachedData = _resourceLocker.Resources.CachedData;
if (!cachedData.ContainsKey(interfaceType))
{
return;
}
if (dataScopeIdentifier == null)
{
dataScopeIdentifier = DataScopeManager.MapByType(interfaceType);
}
if (cachedData[interfaceType].ContainsKey(dataScopeIdentifier))
{
cachedData[interfaceType].Remove(dataScopeIdentifier);
if (cachedData[interfaceType].Count == 0)
{
cachedData.Remove(interfaceType);
}
}
}
}
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));
}
/// <exclude />
public DataSourceId CreateDataSourceId(IDataId dataId, Type interfaceType)
{
Verify.ArgumentNotNull(dataId, "dataId");
Verify.ArgumentNotNull(interfaceType, "interfaceType");
Verify.ArgumentCondition(typeof(IData).IsAssignableFrom(interfaceType), "interfaceType", "The interface type '{0}' does not inherit the interface '{1}'".FormatWith(interfaceType, typeof(IData)));
return(new DataSourceId(dataId, _providerName, interfaceType, DataScopeManager.MapByType(interfaceType), LocalizationScopeManager.MapByType(interfaceType)));
}
/// <exclude />
public Func <XElement, T> CreateSelectFunction <T>(string providerName) where T : IData
{
Type type = typeof(T);
var cache = _selectFunctionCache[typeof(T)];
if (cache == null)
{
lock (_selectFunctionCache)
{
cache = _selectFunctionCache[type];
if (cache == null)
{
cache = new Hashtable <string, Delegate>();
_selectFunctionCache.Add(type, cache);
}
}
}
CultureInfo cultureInfo = LocalizationScopeManager.MapByType(type);
DataScopeIdentifier dataScopeIdentifier = DataScopeManager.MapByType(type);
string cacheKey = cultureInfo + "|" + dataScopeIdentifier.Name;
Delegate result = cache[cacheKey];
if (result == null)
{
lock (this)
{
result = cache[cacheKey];
if (result == null)
{
// element => new [WrapperClass](element, new DataSourceId(new [DataIdClass](element), providerName, type, dataScope, localizationScope)), element
ParameterExpression parameterExpression = Expression.Parameter(typeof(XElement), "element");
result = Expression.Lambda <Func <XElement, T> >(
Expression.New(_wrapperClassConstructor,
new Expression[]
{
parameterExpression,
Expression.New(GeneretedClassesMethodCache.DataSourceIdConstructor2,
new Expression[]
{
Expression.New(_idClassConstructor, new Expression[] { parameterExpression }),
Expression.Constant(providerName, typeof(string)),
Expression.Constant(type, typeof(Type)),
Expression.Constant(dataScopeIdentifier, typeof(DataScopeIdentifier)),
Expression.Constant(cultureInfo, typeof(CultureInfo))
})
}), new[] { parameterExpression }).Compile();
cache.Add(cacheKey, result);
}
}
}
return((Func <XElement, T>)result);
}
private string GetCacheKey(TPropertyType key)
{
string dataScope = DataScopeManager.MapByType(typeof(TDataType)).ToString();
string result = key + dataScope;
if (_typeIsLocalizable)
{
result += LocalizationScopeManager.MapByType(typeof(TDataType)).ToString();
}
return(result);
}
internal static void ClearCache(Type interfaceType, DataScopeIdentifier dataScopeIdentifier, CultureInfo localizationScope)
{
if (!_cachedData.TryGetValue(interfaceType, out TypeData typeData))
{
return;
}
dataScopeIdentifier = dataScopeIdentifier ?? DataScopeManager.MapByType(interfaceType);
localizationScope = !DataLocalizationFacade.IsLocalized(interfaceType)
? CultureInfo.InvariantCulture
: (localizationScope ?? LocalizationScopeManager.CurrentLocalizationScope);
var key = new Tuple <DataScopeIdentifier, CultureInfo>(dataScopeIdentifier, localizationScope);
typeData.TryRemove(key, out _);
}
/// <summary>
/// Flush cached data for a data type in the specified data scope.
/// </summary>
/// <param name="interfaceType">The type of data to flush from the cache</param>
/// <param name="dataScopeIdentifier">The data scope to flush</param>
public static void ClearCache(Type interfaceType, DataScopeIdentifier dataScopeIdentifier)
{
TypeData typeData;
if (!_cachedData.TryGetValue(interfaceType, out typeData))
{
return;
}
if (dataScopeIdentifier == null)
{
dataScopeIdentifier = DataScopeManager.MapByType(interfaceType);
}
ConcurrentDictionary <CultureInfo, CachedTable> data;
typeData.TryRemove(dataScopeIdentifier, out data);
}
internal static void ClearCache(Type interfaceType, DataScopeIdentifier dataScopeIdentifier, CultureInfo localizationScope)
{
TypeData typeData;
if (!_cachedData.TryGetValue(interfaceType, out typeData))
{
return;
}
dataScopeIdentifier = dataScopeIdentifier ?? DataScopeManager.MapByType(interfaceType);
localizationScope = localizationScope ?? LocalizationScopeManager.MapByType(interfaceType);
var key = new Tuple <DataScopeIdentifier, CultureInfo>(dataScopeIdentifier, localizationScope);
CachedTable value;
typeData.TryRemove(key, out value);
}
/// <summary>
/// Flush cached data for a data type in the specified data scope.
/// </summary>
/// <param name="interfaceType">The type of data to flush from the cache</param>
/// <param name="dataScopeIdentifier">The data scope to flush</param>
public static void ClearCache(Type interfaceType, DataScopeIdentifier dataScopeIdentifier)
{
TypeData typeData;
if (!_cachedData.TryGetValue(interfaceType, out typeData))
{
return;
}
dataScopeIdentifier = dataScopeIdentifier ?? DataScopeManager.MapByType(interfaceType);
var toRemove = typeData.Keys.Where(key => key.Item1 == dataScopeIdentifier).ToList();
foreach (var key in toRemove)
{
CachedTable value;
typeData.TryRemove(key, out value);
}
}
/// <exclude />
internal static IQueryable <T> GetDataFromCache <T>(Func <IQueryable <T> > getQueryFunc)
where T : class, IData
{
Verify.That(_isEnabled, "The cache is disabled.");
DataScopeIdentifier dataScopeIdentifier = DataScopeManager.MapByType(typeof(T));
CultureInfo localizationScope = LocalizationScopeManager.MapByType(typeof(T));
var cachedDataset = _resourceLocker.Resources.CachedData;
Hashtable <DataScopeIdentifier, Hashtable <CultureInfo, CachedTable> > dataScopeData;
if (!cachedDataset.TryGetValue(typeof(T), out dataScopeData))
{
using (_resourceLocker.Locker)
{
if (!cachedDataset.TryGetValue(typeof(T), out dataScopeData))
{
dataScopeData = new Hashtable <DataScopeIdentifier, Hashtable <CultureInfo, CachedTable> >();
cachedDataset.Add(typeof(T), dataScopeData);
}
}
}
Hashtable <CultureInfo, CachedTable> localizationScopeData;
if (!dataScopeData.TryGetValue(dataScopeIdentifier, out localizationScopeData))
{
using (_resourceLocker.Locker)
{
if (!dataScopeData.TryGetValue(dataScopeIdentifier, out localizationScopeData))
{
localizationScopeData = new Hashtable <CultureInfo, CachedTable>();
dataScopeData.Add(dataScopeIdentifier, localizationScopeData);
}
}
}
CachedTable cachedTable;
if (!localizationScopeData.TryGetValue(localizationScope, out cachedTable))
{
IQueryable <T> wholeTable = getQueryFunc();
if (!DataProvidersSupportDataWrapping(typeof(T)))
{
DisableCachingForType(typeof(T));
return(Verify.ResultNotNull(wholeTable));
}
if (_maximumSize != -1)
{
List <IData> cuttedTable = TakeElements(wholeTable, _maximumSize + 1);
if (cuttedTable.Count > _maximumSize)
{
DisableCachingForType(typeof(T));
return(Verify.ResultNotNull(wholeTable));
}
cachedTable = new CachedTable(cuttedTable.Cast <T>().AsQueryable());
}
else
{
cachedTable = new CachedTable(wholeTable.Evaluate().AsQueryable());
}
using (_resourceLocker.Locker)
{
if (!localizationScopeData.ContainsKey(localizationScope))
{
localizationScopeData.Add(localizationScope, cachedTable);
}
}
}
var typedData = cachedTable.Queryable as IQueryable <T>;
Verify.IsNotNull(typedData, "Cached value is invalid.");
// Leaving a possibility to extract original query
Func <IQueryable> originalQueryGetter = () =>
{
using (new DataScope(dataScopeIdentifier, localizationScope))
{
return(getQueryFunc());
}
};
return(new CachingQueryable <T>(cachedTable, originalQueryGetter));
}
private static string GetKey(Type type)
{
return(GetKey(type, DataScopeManager.MapByType(type), LocalizationScopeManager.MapByType(type)));
}
/// <exclude />
public void UpdateDataSourceIdDataScope(IData data)
{
Verify.ArgumentNotNull(data, "data");
data.DataSourceId.DataScopeIdentifier = DataScopeManager.MapByType(data);
}