/// <summary>
/// mutates an item in the eviction condition store, and returns true if it's not flagged for eviction
/// </summary>
/// <param name="soId"></param>
/// <returns></returns>
protected bool TouchExpirable(StoredObjectId soId)
{
if (soId == null)
{
return(false);
}
bool isExpired = false;
//get the item's condition from the condition store
var record = this.ExpirableStore.Get <ContextualId <StoredObjectId, IExpirable> >(soId);
//if the eviction condition is touchable, touch it
if (record != null && record.Context != null)
{
isExpired = record.Context.IsExpired();
//if the expirable is touchable, touch it
if (record.Context is ITouchable)
{
ITouchable touch = (ITouchable)record.Context;
touch.Touch();
}
else if (record.Context is IPolyfacing) //or if it's polyfacing with a touchable face
{
IPolyfacing poly = (IPolyfacing)record.Context;
var touch = poly.RootFace.AsHasTouchable();
if (touch != null)
{
touch.Touch();
}
}
}
return(!isExpired);
}
/// <summary>
/// a new Polyface is created and injected.
/// </summary>
/// <param name="face"></param>
/// <returns></returns>
public static Polyface NewRoot(this IPolyfacing face)
{
Condition.Requires(face).IsNotNull();
var rv = Polyface.New();
rv.Is(face.GetType(), face);
return(rv);
}
/// <summary>
/// Sets the behaviour for the provided face name
/// </summary>
/// <param name="type"></param>
/// <param name="behaviour"></param>
/// <returns></returns>
public static Polyface Is(this IPolyfacing face, string faceName, object behaviour)
{
Condition.Requires(face).IsNotNull();
Polyface rv = face.RootFace;
if (rv == null)
{
rv = Polyface.New();
face.RootFace = rv;
}
return(rv.Is(faceName, behaviour));
}
/// <summary>
/// Sets the behaviour for the provided face name
/// </summary>
/// <param name="type"></param>
/// <param name="behaviour"></param>
/// <returns></returns>
public Polyface Is(string face, object behaviour)
{
Condition.Requires(face).IsNotNullOrEmpty();
//registers the behaviour
this.NamedFaces[face] = behaviour;
//if the behaviour is polyface compliant it registers the root
if (behaviour is IPolyfacing)
{
IPolyfacing has = (IPolyfacing)behaviour;
has.RootFace = this;
}
return(this);
}
/// <summary>
/// sets behaviour
/// </summary>
/// <param name="type"></param>
/// <param name="behaviour"></param>
/// <returns></returns>
public Polyface Is(Type type, object behaviour)
{
Condition.Requires(type).IsNotNull();
//registers the behaviour
this.TypedFaces[type] = behaviour;
//if the behaviour is polyface compliant it registers the root
if (behaviour is IPolyfacing)
{
IPolyfacing has = (IPolyfacing)behaviour;
has.RootFace = this;
}
return(this);
}
/// <summary>
/// Gets the behaviour with the provided name
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="name"></param>
/// <returns></returns>
public static T As <T>(this IPolyfacing face, string name)
{
Condition.Requires(face).IsNotNull();
Condition.Requires(face.RootFace).IsNotNull();
return(face.RootFace.As <T>(name));
}
