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SiteDefinition.Empty is not initialized
That's true, the EmptyDefinition property is never set
private static SiteDefinition EmptyDefinition;
// ...
public static SiteDefinition Empty
{
get
{
return EmptyDefinition ?? new SiteDefinition
{
StartPage = ContentReference.EmptyReference
};
}
internal set
{
EmptyDefinition = value;
}
}This property will always be recreated.
Create a custom class if you must have a singleton :P
public class SiteDefinitionCustom : IReadOnly<SiteDefinitionCustom>, IReadOnly
{
private static SiteDefinition EmptyDefinition;
public bool IsReadOnly { get; private set; }
public static SiteDefinition Empty
{
get
{
// horrible but will work 😁
if(EmptyDefinition is null)
{
EmptyDefinition = new SiteDefinition
{
StartPage = ContentReference.EmptyReference
};
}
return EmptyDefinition;
}
internal set
{
EmptyDefinition = value;
}
}
public object CreateWritableClone()
{
throw new NotImplementedException();
}
public void MakeReadOnly()
{
throw new NotImplementedException();
}
SiteDefinitionCustom IReadOnly<SiteDefinitionCustom>.CreateWritableClone()
{
throw new NotImplementedException();
}
}
Mar 28, 2023 8:36
The description of SiteDefinition.Empty says: This is a singleton instance which can be compared against using object comparison. However, if SiteDefinition.Empty is compared to itself, the result returned is false meaning this instance is not a singleton (SiteDefinition.Empty == SiteDefinition.Empty => false).
For comparison, on the .net-framework, SiteDefinition.Empty used to be initialized in WebIdentityInitialization initialization module.