/// <summary>
/// Tries to obtain transaction configuration based on
/// the component configuration or (if not available) check
/// for the attributes.
/// </summary>
/// <param name="kernel">The kernel.</param>
/// <param name="model">The model.</param>
public override void ProcessModel(IKernel kernel, ComponentModel model)
{
if (metaStore == null)
{
metaStore = (TransactionMetaInfoStore) kernel[typeof(TransactionMetaInfoStore)];
}
if (IsMarkedWithTransactional(model.Configuration))
{
base.ProcessModel(kernel, model);
}
else
{
AssertThereNoTransactionOnConfig(model);
ConfigureBasedOnAttributes(model);
}
Validate(model, metaStore);
AddTransactionInterceptorIfIsTransactional(model, metaStore);
}
/// <summary>
/// Initializes a new instance of the <see cref="TransactionInterceptor"/> class.
/// </summary>
/// <param name="kernel">The kernel.</param>
/// <param name="infoStore">The info store.</param>
public TransactionInterceptor(IKernel kernel, TransactionMetaInfoStore infoStore)
{
this.kernel = kernel;
this.infoStore = infoStore;
}
/// <summary>
/// Validates the type is OK to generate a proxy.
/// </summary>
/// <param name="model">The model.</param>
/// <param name="store">The store.</param>
private void Validate(ComponentModel model, TransactionMetaInfoStore store)
{
if (model.Service == null || model.Service.IsInterface)
{
return;
}
TransactionMetaInfo meta = store.GetMetaFor(model.Implementation);
if (meta == null)
{
return;
}
ArrayList problematicMethods = new ArrayList();
foreach(MethodInfo method in meta.Methods)
{
if (!method.IsVirtual)
{
problematicMethods.Add(method.Name);
}
}
if (problematicMethods.Count != 0)
{
String[] methodNames = (String[]) problematicMethods.ToArray(typeof(String));
String message = String.Format("The class {0} wants to use transaction interception, " +
"however the methods must be marked as virtual in order to do so. Please correct " +
"the following methods: {1}", model.Implementation.FullName,
String.Join(", ", methodNames));
throw new FacilityException(message);
}
}
/// <summary>
/// Associates the transaction interceptor with the ComponentModel.
/// </summary>
/// <param name="model">The model.</param>
/// <param name="store">The meta information store.</param>
private static void AddTransactionInterceptorIfIsTransactional(ComponentModel model,
TransactionMetaInfoStore store)
{
TransactionMetaInfo meta = store.GetMetaFor(model.Implementation);
if (meta == null)
{
return;
}
model.Dependencies.Add(
new DependencyModel(DependencyType.Service, null, typeof(TransactionInterceptor), false));
model.Interceptors.AddFirst(new InterceptorReference(typeof(TransactionInterceptor)));
}