public void GetExport_ComplexConstraint_ExportSuccessful()
{
CompositionContext container = CreateContainer(typeof(UnrelatedThings <,>));
var exports = container.GetExports <IUnrelatedThings <IBook, ICar> >();
var types = exports.Select(h => h.GetType());
Assert.Equal(1, exports.Count());
Assert.Contains(typeof(UnrelatedThings <IBook, ICar>), types);
}
public void GetExport_WhereClause_ExportSuccessful()
{
CompositionContext container = CreateContainer(typeof(InheritedThings <,>));
var exports = container.GetExports <IInheritedThings <IBook, IThing> >();
var types = exports.Select(h => h.GetType());
Assert.Equal(1, exports.Count());
Assert.Contains(typeof(InheritedThings <IBook, IThing>), types);
}
public static IEnumerable <Lazy <TExtension, TMetadata> > TryGetExports <TExtension, TMetadata>(this CompositionContext compositionContext)
{
try
{
return(compositionContext.GetExports <Lazy <TExtension, TMetadata> >());
}
catch (Exception)
{
return(null);
}
}
IEnumerable <Lazy <TExtension> > IMefHostExportProvider.GetExports <TExtension>()
{
return(_compositionContext.GetExports <TExtension>().Select(e => new Lazy <TExtension>(() => e)));
}
private IEnumerable <IRequestStartup> GetRequestStartupTasks(CompositionContext container, Type[] requestStartupTypes)
{
return(container.GetExports <IRequestStartup>());
}
protected override IEnumerable <object> DoGetAllInstances(Type serviceType)
{
return(_host.GetExports(serviceType));
}
public IEnumerable <TFormat> Extend(CompositionContext context)
{
TFormat[] extensions = context.GetExports <TFormat>().ToArray();
AddRange(extensions);
return(extensions);
}