public void AddService(Type t, object owner, object instance)
{
Guard.ArgumentNotNull(t, nameof(t));
Guard.ArgumentNotNull(owner, nameof(owner));
Guard.ArgumentNotNull(instance, nameof(instance));
string contract = AttributedModelServices.GetContractName(t);
if (string.IsNullOrEmpty(contract))
{
throw new GitHubLogicException("Every type must have a contract name");
}
// we want to remove stale instances of a service, if they exist, regardless of who put them there
RemoveService(t, null);
var batch = new CompositionBatch();
var part = batch.AddExportedValue(contract, instance);
if (part == null)
{
throw new GitHubLogicException("Adding an exported value must return a non-null part");
}
tempParts.Add(contract, new OwnedComposablePart {
Owner = owner, Part = part
});
TempContainer.Compose(batch);
}
public void AddService(Type t, object owner, object instance)
{
string contract = AttributedModelServices.GetContractName(t);
Debug.Assert(!string.IsNullOrEmpty(contract), "Every type must have a contract name");
// we want to remove stale instances of a service, if they exist, regardless of who put them there
RemoveService(t, null);
var batch = new CompositionBatch();
var part = batch.AddExportedValue(contract, instance);
Debug.Assert(part != null, "Adding an exported value must return a non-null part");
tempParts.Add(contract, new OwnedComposablePart {
Owner = owner, Part = part
});
TempContainer.Compose(batch);
}
/// <summary>
/// Removes a service from the catalog
/// </summary>
/// <param name="t">The type we want to remove</param>
/// <param name="owner">The owner, which either has to match what was passed to AddService,
/// or if it's null, the service will be removed without checking for ownership</param>
public void RemoveService(Type t, [AllowNull] object owner)
{
string contract = AttributedModelServices.GetContractName(t);
Debug.Assert(!string.IsNullOrEmpty(contract), "Every type must have a contract name");
OwnedComposablePart part;
if (tempParts.TryGetValue(contract, out part))
{
if (owner != null && part.Owner != owner)
{
return;
}
tempParts.Remove(contract);
var batch = new CompositionBatch();
batch.RemovePart(part.Part);
TempContainer.Compose(batch);
}
}