public T GetFunctionProvider <T>() where T : class, IFunctionProvider
{
var functionFolderEntityToken = (this.EntityToken as BaseFunctionFolderElementEntityToken);
if (functionFolderEntityToken != null)
{
var elementProvider = ElementProviderPluginFacade.GetElementProvider(functionFolderEntityToken.ElementProviderName) as BaseFunctionElementProvider;
if (elementProvider != null)
{
var provider = FunctionProviderPluginFacade.GetFunctionProvider(elementProvider.FunctionProviderName);
if (provider is T)
{
return(provider as T);
}
}
}
var functionProviderSettings = ConfigurationServices.ConfigurationSource.GetSection(FunctionProviderSettings.SectionName)
as FunctionProviderSettings;
var providerNames = functionProviderSettings.FunctionProviderPlugins.Select(plugin => plugin.Name);
foreach (string providerName in providerNames)
{
var provider = FunctionProviderPluginFacade.GetFunctionProvider(providerName);
if (provider is T)
{
return(provider as T);
}
}
throw new InvalidOperationException("Failed to get instance of " + typeof(T).Name);
}
protected override IEnumerable <IMetaFunction> OnGetFunctionsFromProvider(string providerName, FunctionTypesToReturn functionTypesToReturn)
{
switch (functionTypesToReturn)
{
case FunctionTypesToReturn.StaticDependentFunctions:
return(FunctionProviderPluginFacade.Functions(providerName));
case FunctionTypesToReturn.DynamicDependentOnlyFunctions:
return(FunctionProviderPluginFacade.DynamicTypeDependentFunctions(providerName));
case FunctionTypesToReturn.AllFunctions:
IEnumerable <IMetaFunction> functions = FunctionProviderPluginFacade.Functions(providerName);
return(functions.Concat(FunctionProviderPluginFacade.DynamicTypeDependentFunctions(providerName)));
}
throw new NotImplementedException(string.Format("Unexpected FunctionTypesToReturn enumeration value '{0}' from provider '{1}'", functionTypesToReturn, providerName));
}
internal void GetProviderAndFunction <FunctionType>(
FileBasedFunctionEntityToken entityToken,
out FileBasedFunctionProvider <FunctionType> provider,
out FileBasedFunction <FunctionType> function) where FunctionType : FileBasedFunction <FunctionType>
{
string functionProviderName = entityToken.FunctionProviderName;
provider = (FileBasedFunctionProvider <FunctionType>)FunctionProviderPluginFacade.GetFunctionProvider(functionProviderName);
IFunction func = FunctionFacade.GetFunction(entityToken.FunctionName);
Verify.IsNotNull(func, "Failed to get function '{0}'", entityToken.FunctionName);
if (func is FunctionWrapper)
{
func = (func as FunctionWrapper).InnerFunction;
}
function = (FileBasedFunction <FunctionType>)func;
}
