private void InitialiseMef(PreVerbExecutionContext context)
{
// get the current assembly
var assembly = typeof(Program).Assembly;
var directory = Path.GetDirectoryName(assembly.Location) ?? Directory.GetCurrentDirectory();
// An aggregate catalogue that combines multiple catalogues
this.container =
new CompositionContainer(
new AggregateCatalog(new AssemblyCatalog(assembly), new DirectoryCatalog(directory)));
}
static void Pre(PreVerbExecutionContext x, string y)
{
}
public void BeforeVerbExecution(PreVerbExecutionContext context)
{
PreContext = context;
context.UserContext.Add("a", 54);
}
private void Pre2(PreVerbExecutionContext context)
{
}
private void Pre(PreVerbExecutionContext context)
{
PreContext = context;
context.Cancel = true;
}
private void Pre(PreVerbExecutionContext context)
{
PreContext = context;
context.UserContext.Add("a", 54);
}
private PreVerbExecutionContext PreInterception(
object target,
Method method,
ParameterAndValue[] parameters)
{
var preVerbExecutionContext = new PreVerbExecutionContext(method, target, parameters);
// registered interceptors get top priority
//
if (m_registration.RegisteredPreVerbInterceptor != null)
{
m_registration.RegisteredPreVerbInterceptor(preVerbExecutionContext);
}
else
{
// try a defined verb interceptor
//
var preInterceptionMethods = Type.GetMethodsWith<PreVerbExecutionAttribute>();
if (preInterceptionMethods.Any())
{
Debug.Assert(preInterceptionMethods.Count() == 1);
var preInterceptionMethod = preInterceptionMethods.First();
MethodInvoker.Invoke(preInterceptionMethod, target, new[] { preVerbExecutionContext });
}
else
{
// try a defined interceptor type
//
if (Type.HasAttribute<VerbInterception>())
{
var interception = Type.GetAttribute<VerbInterception>();
var interceptor = (IPreVerbInterceptor)Activator.CreateInstance(interception.InterceptorType);
interceptor.BeforeVerbExecution(preVerbExecutionContext);
}
}
}
return preVerbExecutionContext;
}
private void PostInterception(
object target,
Method method,
ParameterAndValue[] parameters,
PreVerbExecutionContext preVerbExecutionContext,
Exception verbException)
{
var postVerbExecutionContext = new PostVerbExecutionContext(
method,
target,
parameters,
preVerbExecutionContext.Cancel,
verbException,
preVerbExecutionContext.UserContext);
// registered interceptors get top priority
//
if (m_registration.RegisteredPostVerbInterceptor != null)
{
m_registration.RegisteredPostVerbInterceptor(postVerbExecutionContext);
}
else
{
var postInterceptionMethods = Type.GetMethodsWith<PostVerbExecutionAttribute>();
// try a defined interceptor type
//
if (postInterceptionMethods.Any())
{
Debug.Assert(postInterceptionMethods.Count() == 1);
var postInterceptionMethod = postInterceptionMethods.First();
MethodInvoker.Invoke(postInterceptionMethod, target, new[] { postVerbExecutionContext });
}
else
{
// try a defined interceptor type
//
if (Type.HasAttribute<VerbInterception>())
{
var interception = Type.GetAttribute<VerbInterception>();
var interceptor = (IPostVerbInterceptor)Activator.CreateInstance(interception.InterceptorType);
interceptor.AfterVerbExecution(postVerbExecutionContext);
}
}
}
}
